Integrated Taxonomic Information System - Taxon Author Search Results

Expert: Charles A. Butterworth, Ph.D.

ITIS records citing expert
 
 Kingdom Plantae
  Acanthocalycium Backeb. -- not accepted
  Acanthocalycium aurantiacum Rausch -- not accepted
  Acanthocalycium brevispinum F. Ritter -- not accepted
  Acanthocalycium catamarcense F. Ritter -- not accepted
  Acanthocalycium chionanthum (Speg.) Backeb. -- not accepted
  Acanthocalycium ferrarii Rausch -- not accepted
  Acanthocalycium glaucum F. Ritter -- not accepted
  Acanthocalycium griseum Backeb. -- not accepted
  Acanthocalycium klimpelianum (Weidlich & Werderm.) Backeb. -- not accepted
  Acanthocalycium peitscherianum Backeb. -- not accepted
  Acanthocalycium spiniflorum (K. Schum.) Backeb. -- not accepted
  Acanthocalycium thionanthum (Speg.) Backeb. -- not accepted
  Acanthocalycium variiflorum Backeb. -- not accepted
  Acanthocalycium violaceum (Werderm.) Backeb. -- not accepted
  Acanthocereus (Engelm. ex A. Berger) Britton & Rose -- accepted -- triangle cactus
  Acanthocereus albicaulis Britton & Rose -- not accepted
  Acanthocereus floridanus Small ex Britton & Rose -- not accepted
  Acanthocereus pentagonus (L.) Britton & Rose -- not accepted
  Acanthocereus tetragonus (L.) Hummelinck -- accepted -- triangle cactus, Órgano-alado de pitaya
  Acanthocereus undulosus (DC.) Croizat -- not accepted
  Acantholobivia Backeb. -- not accepted
  Acantholobivia incuiensis (Rauh & Backeb.) Rauh & Backeb. -- not accepted
  Acantholobivia tegeleriana (Backeb.) Backeb. -- not accepted
  Acharagma (N.P. Taylor) Glass -- accepted
  Acharagma aguirreanum (Glass & R.A. Foster) Glass -- accepted
  Acharagma roseanum (Boed.) E.F. Anderson -- accepted
  Acharagma roseanum ssp. galeanense (Haugg) D.R. Hunt -- accepted
  Acharagma roseanum ssp. roseanum (Boed.) E.F. Anderson -- accepted
  Ancistrocactus (K. Schum.) Britton & Rose -- not accepted
  Ancistrocactus brevihamatus (Engelm.) Britton & Rose -- not accepted
  Ancistrocactus crassihamatus (F.A.C. Weber) L.D. Benson -- not accepted
  Ancistrocactus megarrhizus (Rose) Britton & Rose -- not accepted
  Ancistrocactus scheeri (Salm-Dyck) Britton & Rose -- not accepted
  Ancistrocactus tobuschii (W.T. Marshall) Backeb. ex L.D. Benson -- not accepted -- Tobusch fishhook cactus
  Ancistrocactus uncinatus (Galeotti ex Pfeiff.) L.D. Benson -- not accepted
  Ancistrocactus uncinatus var. uncinatus (Galeotti ex Pfeiff.) L.D. Benson -- not accepted
  Anhalonium Lem. -- not accepted
  Anhalonium furfuraceum (S. Watson) J.M. Coult. -- not accepted
  Anhalonium trigonum F.A.C. Weber -- not accepted
  Anisocereus Backeb. -- not accepted
  Anisocereus foetidus (T. MacDoug. & Miranda) W.T. Marshall -- not accepted
  Anisocereus lepidanthus (Eichlam) Backeb. -- not accepted
  Aporocactus Lem. -- not accepted
  Aporocactus conzattii Britton & Rose -- not accepted
  Aporocactus flagelliformis Lem. -- not accepted
  Aporocactus leptophis (DC.) Britton & Rose -- not accepted
  Aporocactus martianus Britton & Rose -- not accepted
  Ariocarpus Scheidw. -- accepted -- livingrock
  Ariocarpus agavoides (Castañeda) E.F. Anderson -- accepted
  Ariocarpus bravoanus H.M. Hern. & E.F. Anderson -- accepted
  Ariocarpus bravoanus ssp. bravoanus H.M. Hern. & E.F. Anderson -- accepted
  Ariocarpus bravoanus ssp. hintonii (Stuppy & N.P. Taylor) E.F. Anderson & W.A. Fitz Maur. -- accepted
  Ariocarpus fissuratus (Engelm.) K. Schum. -- accepted -- chautle livingrock, Biznaga peyotillo
  Ariocarpus fissuratus var. hintonii Stuppy & N.P. Taylor -- not accepted
  Ariocarpus kotschoubeyanus (Lem.) K. Schum. -- accepted
  Ariocarpus retusus Scheidw. -- accepted -- Biznaga-maguey peyote cimarrón
  Ariocarpus scapharostris Boed. -- not accepted
  Ariocarpus strobiliformis Werderm. -- not accepted
  Ariocarpus trigonus (F.A.C. Weber) K. Schum. -- accepted
  Armatocereus Backeb. -- accepted
  Armatocereus arboreus Rauh & Backeb. -- not accepted
  Armatocereus cartwrightianus (Britton & Rose) Backeb. -- accepted
  Armatocereus churinensis Rauh & Backeb. -- not accepted
  Armatocereus godingianus (Britton & Rose) Backeb. -- accepted
  Armatocereus laetus (Britton & Rose) Backeb. -- accepted
  Armatocereus mataranus ssp. ancashensis Ostolaza -- not accepted
  Armatocereus mataranus var. ancashensis F. Ritter -- not accepted
  Armatocereus matucanensis Backeb. -- accepted
  Armatocereus procerus Rauh & Backeb. -- accepted
  Armatocereus rauhii Backeb. -- accepted
  Armatocereus riomajensis Rauh & Backeb. -- accepted
  Armatocereus rupicola F. Ritter -- not accepted
  Arrojadoa Britton & Rose -- accepted
  Arrojadoa aureispina Buining & Brederoo -- not accepted
  Arrojadoa aureispina var. anguinea P.J. Braun & Esteves -- not accepted
  Arrojadoa aureispina var. guanambensis P.J. Braun & Heiman -- not accepted
  Arrojadoa beateae P.J. Braun & Esteves -- not accepted
  Arrojadoa canudosensis Buining & Brederoo -- not accepted
  Arrojadoa dinae Buining & Brederoo -- accepted
  Arrojadoa dinae ssp. eriocaulis (Buining & Brederoo) N.P. Taylor & Zappi -- not accepted
  Arrojadoa dinae ssp. nana (P.J. Braun & Esteves) P.J. Braun & Esteves -- not accepted
  Arrojadoa dinae var. nana P.J. Braun & Esteves -- not accepted
  Arrojadoa eriocaulis Buining & Brederoo -- accepted
  Arrojadoa eriocaulis ssp. albicoronata P.J. Braun & Esteves -- not accepted
  Arrojadoa horstiana P.J. Braun & Heiman -- not accepted
  Arrojadoa marylaniae Soares Filho & M. Machado -- accepted
  Arrojadoa multiflora F. Ritter -- not accepted
  Arrojadoa multiflora ssp. hofackeriana P.J. Braun & Esteves -- not accepted
  Arrojadoa penicillata (Gürke) Britton & Rose -- accepted
  Arrojadoa rhodantha (Gürke) Britton & Rose -- accepted
  Arrojadoa rhodantha ssp. aureispina (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Arrojadoa rhodantha ssp. canudosensis (Buining & Brederoo) P.J. Braun -- not accepted
  Arrojadoa rhodantha ssp. reflexa P.J. Braun -- not accepted
  Arrojadoa rhodantha var. theunisseniana (Buining & Brederoo) P.J. Braun -- not accepted
  Arthrocereus A. Berger -- accepted
  Arthrocereus campos-portoi (Werderm.) Backeb. -- not accepted
  Arthrocereus damazioi (K. Schum.) P.V. Heath -- not accepted
  Arthrocereus densiaculeatus (Backeb.) Krainz -- not accepted
  Arthrocereus glaziovii (K. Schum.) N.P. Taylor & Zappi -- accepted
  Arthrocereus itabiriticola P.J. Braun -- not accepted
  Arthrocereus melanurus (K. Schum.) Diers, P.J. Braun & Esteves -- accepted
  Arthrocereus melanurus ssp. magnus N.P. Taylor & Zappi -- accepted
  Arthrocereus melanurus ssp. melanurus (K. Schum.) Diers, P.J. Braun & Esteves -- accepted
  Arthrocereus melanurus ssp. odorus (F. Ritter) N.P. Taylor & Zappi -- accepted
  Arthrocereus odorus F. Ritter -- not accepted
  Arthrocereus rondonianus Backeb. & Voll -- accepted
  Arthrocereus spinosissimus (Buining & Brederoo) F. Ritter -- accepted
  Astrophytum Lem. -- accepted
  Astrophytum asterias (Zucc.) Lem. -- accepted -- sanddollar, Biznaga-algononcillo de estrella, seaurchin starcactus, star cactus
  Astrophytum capricorne (A. Dietr.) Britton & Rose -- accepted
  Astrophytum caput-medusae (Velazco & Nevárez) D.R. Hunt -- accepted
  Astrophytum coahuilense (H. Moeller) K. Kayser -- accepted
  Astrophytum columnare (K. Schum.) Sadovsky & Schütz -- not accepted
  Astrophytum myriostigma Lem. -- accepted
  Astrophytum myriostigma var. potosinum (Kanfer) Borg -- not accepted
  Astrophytum myriostigma var. tulense (K. Kayser) Y. Itô -- not accepted
  Astrophytum ornatum (DC.) Britton & Rose -- accepted
  Astrophytum senile Fric -- not accepted
  Astrophytum tulense (K. Kayser) Sadovsky & Schütz -- not accepted
  Austrocactus Britton & Rose -- accepted
  Austrocactus bertinii (Cels ex Hérincq) Britton & Rose -- accepted
  Austrocactus dusenii (F.A.C. Weber ex Speg.) Speg. -- not accepted
  Austrocactus gracilis Backeb. -- not accepted
  Austrocactus hibernus F. Ritter -- not accepted
  Austrocactus patagonicus (F.A.C. Weber ex Speg.) Hosseus -- not accepted
  Austrocactus philippii (Regel & Schmidt) Buxb. -- accepted
  Austrocactus spiniflorus (Phil.) F. Ritter -- accepted
  Austrocephalocereus Backeb. -- not accepted
  Austrocephalocereus fluminensis (Miq.) Buxb. -- not accepted
  Austrocylindropuntia Backeb. -- accepted
  Austrocylindropuntia chuquisacana (Cárdenas) F. Ritter -- not accepted
  Austrocylindropuntia cylindrica (Lam.) Backeb. -- accepted
  Austrocylindropuntia exaltata (A. Berger) Backeb. -- not accepted
  Austrocylindropuntia floccosa (Salm-Dyck) F. Ritter -- accepted
  Austrocylindropuntia haematacantha (Backeb.) Backeb. -- not accepted
  Austrocylindropuntia hirschii (Backeb.) E.F. Anderson -- not accepted
  Austrocylindropuntia humahuacana (Backeb.) Backeb. -- not accepted
  Austrocylindropuntia inarmata Backeb. -- not accepted
  Austrocylindropuntia intermedia Rauh & Backeb. -- not accepted
  Austrocylindropuntia lagopus (K. Schum.) I. Crook, J. Arnold & M. Lowry -- accepted
  Austrocylindropuntia lauliacoana F. Ritter -- not accepted
  Austrocylindropuntia machacana F. Ritter -- not accepted
  Austrocylindropuntia malyana (Rausch) F. Ritter -- not accepted
  Austrocylindropuntia pachypus (K. Schum.) Backeb. -- accepted
  Austrocylindropuntia punta-caillan (Rauh & Backeb.) E.F. Anderson -- not accepted
  Austrocylindropuntia shaferi (Britton & Rose) Backeb. -- accepted
  Austrocylindropuntia steiniana Backeb. -- not accepted
  Austrocylindropuntia subulata (Muehlenpf.) Backeb. -- accepted
  Austrocylindropuntia subulata ssp. exaltata (A. Berger) D.R. Hunt -- accepted
  Austrocylindropuntia subulata ssp. subulata (Muehlenpf.) Backeb. -- accepted
  Austrocylindropuntia tephrocactoides Rauh & Backeb. -- not accepted
  Austrocylindropuntia teres (Cels ex F.A.C. Weber) Backeb. -- not accepted
  Austrocylindropuntia verschaffeltii (Cels ex F.A.C. Weber) Backeb. -- accepted
  Austrocylindropuntia vestita (Salm-Dyck) Backeb. -- accepted
  Austrocylindropuntia weingartiana (Backeb.) Backeb. -- not accepted
  Austrocylindropuntia yanganucensis (Rauh & Backeb.) E.F. Anderson -- not accepted
  Aztekium Boed. -- accepted
  Aztekium hintonii Glass & W.A. Fitz Maur. -- accepted
  Aztekium ritteri (Boed.) Boed. -- accepted
  Azureocereus Akers & H. Johnson -- not accepted
  Azureocereus hertlingianus (Backeb.) Backeb. -- not accepted
  Bergerocactus Britton & Rose -- accepted -- snakecactus
  Bergerocactus emoryi (Engelm.) Britton & Rose -- accepted -- golden snakecactus, Órgano aterciopelado
  Bergerocereus emoryi (Engelm.) Britton & Rose -- not accepted
  Blossfeldia Werderm. -- accepted
  Blossfeldia liliputana Werderm. -- accepted
  Blossfeldia liliputana var. atroviridis (F. Ritter) Krainz -- not accepted
  Blossfeldia liliputana var. campaniflora (Backeb.) Krainz -- not accepted
  Blossfeldia liliputana var. fechseri (Backeb.) F. Ritter -- not accepted
  Blossfeldia minima F. Ritter -- not accepted
  Blossfeldia pedicellata F. Ritter -- not accepted
  Bolivicereus Cárdenas -- not accepted
  Bolivicereus brevicaulis F. Ritter -- not accepted
  Bolivicereus croceus F. Ritter -- not accepted
  Bolivicereus rufus F. Ritter -- not accepted
  Bolivicereus samaipatanus Cárdenas -- not accepted
  Bonifazia Standl. & Steyerm. -- not accepted
  Bonifazia quezalteca Standl. & Steyerm. -- not accepted
  Borzicactus Riccob. -- not accepted
  Borzicactus acanthurus (Vaupel) Britton & Rose -- not accepted
  Borzicactus aequatorialis Backeb. -- not accepted
  Borzicactus aurantiacus (Vaupel) Kimnach & Hutchison -- not accepted
  Borzicactus aurivillus (K. Schum.) Britton & Rose -- not accepted
  Borzicactus cajamarcensis F. Ritter -- not accepted
  Borzicactus calocephala (Skarupke) Donald -- not accepted
  Borzicactus calvescens Kimnach & Hutchison -- not accepted
  Borzicactus calviflorus F. Ritter -- not accepted
  Borzicactus celsianus (Lem. ex Salm-Dyck) Kimnach -- not accepted
  Borzicactus decumbens (Vaupel) Britton & Rose -- not accepted
  Borzicactus doelzianus (Backeb.) Kimnach -- not accepted
  Borzicactus faustianus Backeb. -- not accepted
  Borzicactus fieldianus Britton & Rose -- not accepted
  Borzicactus formosus (F. Ritter) Donald -- not accepted
  Borzicactus fossulatus (Labour.) Kimnach -- not accepted
  Borzicactus fruticosus (F. Ritter) Donald -- not accepted
  Borzicactus haynei (Otto) Kimnach -- not accepted
  Borzicactus hendriksenianus (Backeb.) Kimnach -- not accepted
  Borzicactus huagalensis Donald & A.B. Lau -- not accepted
  Borzicactus icosagonus (Kunth) Britton & Rose -- not accepted
  Borzicactus intertextus (F. Ritter) Donald -- not accepted
  Borzicactus jajoanus Backeb. -- not accepted
  Borzicactus krahnii Donald -- not accepted
  Borzicactus leucotrichus (Phil.) Kimnach -- not accepted
  Borzicactus madisoniorum Hutchison -- not accepted
  Borzicactus morleyanus Britton & Rose -- not accepted
  Borzicactus myriacanthus (Vaupel) Donald -- not accepted
  Borzicactus neoroezlii F. Ritter -- not accepted
  Borzicactus oreodoxus (F. Ritter) Donald -- not accepted
  Borzicactus paucicostatus (F. Ritter) Donald -- not accepted
  Borzicactus pisacensis (Kníze) G.D. Rowley -- not accepted
  Borzicactus plagiostoma (Vaupel) Britton & Rose -- not accepted
  Borzicactus pseudothelegonus (Rauh & Backeb.) Rauh & Backeb. -- not accepted
  Borzicactus purpureus F. Ritter -- not accepted
  Borzicactus ritteri (Buining) Donald -- not accepted
  Borzicactus samaipatanus (Cárdenas) Kimnach -- not accepted
  Borzicactus samnensis F. Ritter -- not accepted
  Borzicactus sepium (Kunth) Britton & Rose -- not accepted
  Borzicactus sextonianus (Backeb.) Kimnach -- not accepted
  Borzicactus soukupii (Kníze) G.D. Rowley -- not accepted
  Borzicactus sulcifer (Rauh & Backeb.) Kimnach -- not accepted
  Borzicactus tenuiserpens (Rauh & Backeb.) Kimnach -- not accepted
  Borzicactus tessellatus Akers & Buining -- not accepted
  Borzicactus trollii (Kupper) Kimnach -- not accepted
  Borzicactus tuberculatus Donald -- not accepted
  Borzicactus variabilis (Rauh & Backeb.) Donald -- not accepted
  Borzicactus ventimigliae Riccob. -- not accepted
  Borzicactus weberbaueri (Vaupel) Donald -- not accepted
  Borzicactus websterianus Backeb. -- not accepted
  Borzicactus websterianus var. rufispinus Backeb. -- not accepted
  Brachycalycium Backeb. -- not accepted
  Brachycalycium tilcarense Backeb. -- not accepted
  Brachycereus Britton & Rose -- accepted
  Brachycereus nesioticus (K. Schum.) Backeb. -- accepted
  Brasilicactus Backeb. -- not accepted
  Brasilicactus elachisanthus (F.A.C. Weber) Backeb. -- not accepted
  Brasilicactus graessneri (K. Schum.) Backeb. -- not accepted
  Brasilicactus haselbergii (F. Haage) Backeb. ex Schaffnit -- not accepted
  Brasilicereus Backeb. -- accepted
  Brasilicereus breviflorus F. Ritter -- not accepted
  Brasilicereus markgrafii Backeb. & Voll -- accepted
  Brasilicereus phaeacanthus (Gürke) Backeb. -- accepted
  Brasilicereus phaeacanthus ssp. breviflorus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Brasiliopuntia (K. Schum.) A. Berger -- accepted
  Brasiliopuntia bahiensis (Britton & Rose) A. Berger -- not accepted
  Brasiliopuntia brasiliensis (Willd.) A. Berger -- accepted
  Brasiliopuntia neoargentina Backeb. -- not accepted
  Brasiliopuntia schulzii (A. Cast. & H.V. Lelong) Backeb. -- not accepted
  Brasiliopuntia subacarpa Rizzini & A. Mattos -- not accepted
  Browningia Britton & Rose -- accepted
  Browningia albiceps F. Ritter -- not accepted
  Browningia altissima (F. Ritter) Buxb. -- accepted
  Browningia amstutziae (Rauh & Backeb.) Hutchison ex Krainz -- accepted
  Browningia caineana (Cárdenas) D.R. Hunt -- not accepted
  Browningia candelaris (Meyen) Britton & Rose -- accepted
  Browningia candelaris ssp. candelaris (Meyen) Britton & Rose -- accepted
  Browningia candelaris ssp. icaensis (F. Ritter) D.R. Hunt -- accepted
  Browningia chlorocarpa (Kunth) W.T. Marshall -- accepted
  Browningia columnaris F. Ritter -- accepted
  Browningia hertlingiana (Backeb.) Buxb. -- accepted
  Browningia icaensis F. Ritter -- not accepted
  Browningia microsperma (Werderm. & Backeb.) W.T. Marshall -- accepted
  Browningia pilleifera (F. Ritter) Hutchison -- accepted
  Browningia riosaniensis (Backeb.) G.D. Rowley -- not accepted
  Buiningia Buxb. -- not accepted
  Buiningia brevicylindrica Buining -- not accepted
  Buiningia purpurea Buining & Brederoo -- not accepted
  Cactaceae Juss. -- accepted -- cactus, cacti
  Cactus L. -- not accepted
  Cactus brasiliensis Willd. -- not accepted
  Cactus broadwayi Britton & Rose -- not accepted
  Cactus chlorocarpus Kunth -- not accepted
  Cactus cochenilifer L. -- not accepted
  Cactus cochenillifera L. -- not accepted
  Cactus cochenilliferus L. -- not accepted
  Cactus coquimbanus Molina -- not accepted
  Cactus curvispinus Bertero ex Colla -- not accepted
  Cactus curvispinus (Otto) Kuntze -- not accepted
  Cactus cylindricus Lam. -- not accepted
  Cactus dillenii Ker Gawl. -- not accepted
  Cactus ficus-indica L. -- not accepted
  Cactus flagelliformis L. -- not accepted
  Cactus fragilis Nutt. -- not accepted
  Cactus humifusus Raf. -- not accepted
  Cactus intortus Mill. -- not accepted
  Cactus melocactus L. -- not accepted
  Cactus pentagonus L. -- not accepted
  Cactus pereskia L. -- not accepted
  Cactus phyllanthoides DC. -- not accepted
  Cactus pusillus Haw. -- not accepted
  Cactus repandus L. -- not accepted
  Cactus robustispinus (A. Schott ex Engelm.) Kuntze -- not accepted
  Cactus senilis (Lodd. ex Salm-Dyck) Kuntze -- not accepted
  Cactus sepium Kunth -- not accepted
  Cactus speciosus Cav. -- not accepted
  Cactus strictus Haw. -- not accepted
  Cactus triacanthus Willd. -- not accepted
  Cactus tunicatus Lehm. -- not accepted
  Cactus viviparus Nutt. -- not accepted
  Calymmanthium F. Ritter -- accepted
  Calymmanthium substerile F. Ritter -- accepted
  Carnegiea Britton & Rose -- accepted -- saguaro
  Carnegiea euphorbioides var. olfersii (Salm-Dyck) P.V. Heath -- not accepted
  Carnegiea fulviceps (F.A.C. Weber ex K. Schum.) P.V. Heath -- not accepted
  Carnegiea gigantea (Engelm.) Britton & Rose -- accepted -- Saguaro, saguaro
  Carnegiea laui P.V. Heath -- not accepted
  Carnegiea macrocephala (F.A.C. Weber ex K. Schum.) P.V. Heath -- not accepted
  Carnegiea mezcalaensis (Bravo) P.V. Heath -- not accepted
  Carnegiea nova P.V. Heath -- not accepted
  Carnegiea polylopha (DC.) D.R. Hunt -- not accepted
  Carnegiea scoparia (Polseg.) P.V. Heath -- not accepted
  Carnegiea squamulosa (Scheinvar & Sánchez-Mej.) P.V. Heath -- not accepted
  Carnegiea tetetzo (J.M. Coult.) P.V. Heath -- not accepted
  Cassytha Mill. -- not accepted
  Cassytha baccifera Sol. ex J.M. Mill. -- not accepted
  Castellanosia Cárdenas -- accepted
  Castellanosia caineana Cárdenas -- accepted
  Cephalocereus Pfeiff. -- accepted
  Cephalocereus alensis (F.A.C. Weber ex Rol.-Goss.) Britton & Rose -- not accepted
  Cephalocereus apicicephalium E.Y. Dawson -- accepted
  Cephalocereus arrabidae (Lem.) Britton & Rose -- not accepted
  Cephalocereus bahamensis Britton -- not accepted
  Cephalocereus barbadensis Britton & Rose -- not accepted
  Cephalocereus brasiliensis Britton & Rose -- not accepted
  Cephalocereus brooksianus Britton & Rose -- not accepted
  Cephalocereus catingicola (Gürke) Britton & Rose -- not accepted
  Cephalocereus chrysacanthus (F.A.C. Weber) Britton & Rose -- not accepted
  Cephalocereus collinsii Britton & Rose -- not accepted
  Cephalocereus colombianus Rose -- not accepted
  Cephalocereus columna-trajani (Karw.) K. Schum. -- accepted
  Cephalocereus delaetii (Gürke) Gürke -- not accepted
  Cephalocereus dybowskii (Rol.-Goss.) Britton & Rose -- not accepted
  Cephalocereus fluminensis (Miq.) Britton & Rose -- not accepted
  Cephalocereus fulviceps (F.A.C. Weber ex K. Schum.) H.E. Moore -- not accepted
  Cephalocereus gaumeri Britton & Rose -- not accepted
  Cephalocereus gounellei (F.A.C. Weber ex K. Schum.) Britton & Rose -- not accepted
  Cephalocereus guentheri Kupper -- not accepted
  Cephalocereus guerreronis (Backeb.) Buxb. -- not accepted
  Cephalocereus hoppenstedtii (Roezl ex Rümpler) K. Schum. -- not accepted
  Cephalocereus keyensis Britton & Rose -- not accepted
  Cephalocereus lanuginosus (L.) Britton & Rose -- not accepted
  Cephalocereus leucocephalus (Poselg.) Britton & Rose -- not accepted
  Cephalocereus leucostele (Gürke) Britton & Rose -- not accepted
  Cephalocereus macrocephalus F.A.C. Weber ex K. Schum. -- not accepted
  Cephalocereus maxonii Rose -- not accepted
  Cephalocereus militaris (Audot) H.E. Moore -- not accepted
  Cephalocereus millspaughii Britton -- not accepted
  Cephalocereus monoclonos (DC.) Britton & Rose -- not accepted
  Cephalocereus moritzianus (Otto) Britton & Rose -- not accepted
  Cephalocereus nobilis (Haw.) Britton & Rose -- not accepted
  Cephalocereus palmeri Rose -- not accepted
  Cephalocereus pentaedrophorus (Labour.) Britton & Rose -- not accepted
  Cephalocereus phaeacanthus (Gürke) Britton & Rose -- not accepted
  Cephalocereus piauhyensis (Gürke) Britton & Rose -- not accepted
  Cephalocereus polygonus (Lam.) Britton & Rose -- not accepted
  Cephalocereus polylophus (DC.) Britton & Rose -- not accepted
  Cephalocereus purpusii Britton & Rose -- not accepted
  Cephalocereus quadricentralis E.Y. Dawson -- not accepted
  Cephalocereus robinii (Lem.) Britton & Rose -- not accepted
  Cephalocereus robustus Britton & Rose -- not accepted
  Cephalocereus royenii (L.) Britton & Rose -- not accepted
  Cephalocereus russelianus (Rümpler) Rose -- not accepted
  Cephalocereus sartorianus Rose -- not accepted
  Cephalocereus scoparius (Polseg.) Britton & Rose -- not accepted
  Cephalocereus senilis (Haw.) Pfeiff. -- accepted
  Cephalocereus smithianus Britton & Rose -- not accepted
  Cephalocereus swartzii (Griseb.) Britton & Rose -- not accepted
  Cephalocereus tweedyanus Britton & Rose -- not accepted
  Cephalocereus zehnteri Britton & Rose -- not accepted
  Cephalocleistocactus F. Ritter -- not accepted
  Cephalocleistocactus chrysocephalus F. Ritter -- not accepted
  Cephalocleistocactus pallidus Backeb. -- not accepted
  Cephalocleistocactus ritteri (Backeb.) Backeb. -- not accepted
  Cephalocleistocactus schattatianus Backeb. -- not accepted
  Cereus Mill. -- accepted -- sweetpotato cactus
  Cereus acanthurus Vaupel -- not accepted
  Cereus acifer Otto ex Salm-Dyck -- not accepted
  Cereus acranthus Vaupel -- not accepted
  Cereus adelmarii (Rizzini & A. Mattos) P.J. Braun -- not accepted
  Cereus aethiops Haw. -- accepted
  Cereus albicaulis (Britton & Rose) Leutzelb. -- accepted
  Cereus alticostatus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus amazonicus K. Schum. ex Vaupel -- not accepted
  Cereus anisitsii K. Schum. -- not accepted
  Cereus apiciflorus Vaupel -- not accepted
  Cereus apoloensis (Cárdenas) P.J. Braun & Esteves -- not accepted
  Cereus argentinensis Britton & Rose -- accepted
  Cereus atacamensis Phil. -- not accepted
  Cereus atroviridis Backeb. -- not accepted
  Cereus ballivianii (Cárdenas) P.J. Braun & Esteves -- not accepted
  Cereus baumannii Lem. -- not accepted
  Cereus baumannii Fenzl -- not accepted
  Cereus bicolor Rizzini & A. Mattos -- accepted
  Cereus biformis Lindl. -- not accepted
  Cereus blankii Poselg. -- not accepted
  Cereus brachypetalus Vaupel -- not accepted
  Cereus brevistylus K. Schum. ex Vaupel -- not accepted
  Cereus calcirupicola (F. Ritter) Rizzini -- not accepted
  Cereus calcirupicola ssp. cabralensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus calcirupicola ssp. cipoensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus calcirupicola var. cabralensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus calcirupicola var. cipoensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus californicus Torr. & A. Gray -- not accepted
  Cereus campinensis (Backeb. & Voll) P.J. Braun & Esteves -- not accepted
  Cereus campinensis ssp. piedadensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus campinensis var. piedadensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus candelaris Meyen -- not accepted
  Cereus candicans Gillies ex Salm-Dyck -- not accepted
  Cereus chacoanus Vaupel -- not accepted
  Cereus cochabambensis Cárdenas -- not accepted
  Cereus comarapanus Cárdenas -- not accepted
  Cereus crassisepalus Buining & Brederoo -- not accepted
  Cereus dayamii Speg. -- not accepted
  Cereus deserticola Werderm. -- not accepted
  Cereus diffusus (Britton & Rose) Werderm. -- not accepted
  Cereus diguetii A. Weber -- not accepted
  Cereus emoryi Engelm. -- not accepted
  Cereus engelmannii Parry ex Engelm. -- not accepted
  Cereus enneacanthus (Engelm.) Engelm. -- not accepted
  Cereus eriophorus Pfeiff. -- not accepted
  Cereus eriophorus var. fragrans (Small ex Britton & Rose) L.D. Benson -- not accepted -- fragrant prickly-apple
  Cereus estevesii P.J. Braun -- accepted
  Cereus euchlorus F.A.C. Weber ex K. Schum. -- not accepted
  Cereus euchlorus ssp. leucanthus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus euchlorus ssp. rhodoleucanthus (K. Schum.) P.J. Braun & Esteves -- not accepted
  Cereus extensus Salm-Dyck ex DC. -- not accepted
  Cereus fendleri Engelm. -- not accepted
  Cereus fernambucensis Lem. -- accepted
  Cereus fernambucensis ssp. fernambucensis Lem. -- accepted
  Cereus fernambucensis ssp. sericifer (F. Ritter) N.P. Taylor & Zappi -- accepted
  Cereus fluminensis Miq. -- not accepted
  Cereus fricii Backeb. -- accepted
  Cereus giganteus Engelm. -- not accepted -- saguaro
  Cereus glaziovii K. Schum. -- not accepted
  Cereus goebelianus Vaupel -- not accepted
  Cereus goiasensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus gracilis var. aboriginus (Small) L.D. Benson -- not accepted
  Cereus gracilis var. simpsonii (Small ex Britton & Rose) L.D. Benson -- not accepted -- Simpson's prickly-apple
  Cereus grandiflorus (L.) Mill. -- not accepted
  Cereus grantianus (Britton) H.P. Kelsey & Dayton -- not accepted
  Cereus greggii Engelm. -- not accepted
  Cereus greggii var. transmontanus Engelm. -- not accepted
  Cereus grenadensis Britton & Rose -- not accepted
  Cereus haageanus (Backeb.) N.P. Taylor -- not accepted
  Cereus hankeanus F.A.C. Weber -- accepted
  Cereus hassleri K. Schum. -- not accepted
  Cereus hexagonus (L.) Mill. -- accepted -- lady of the night cactus
  Cereus hildmannianus K. Schum. -- accepted -- hedge cactus
  Cereus hildmannianus ssp. hildmannianus K. Schum. -- accepted
  Cereus hildmannianus ssp. uruguayanus (F. Ritter ex R. Kiesling) N.P. Taylor -- accepted
  Cereus hildmannianus ssp. xanthocarpus (K. Schum.) P.J. Braun & Esteves -- not accepted
  Cereus hookeri Link & Otto -- not accepted
  Cereus horrispinus Backeb. -- accepted
  Cereus huascha F.A.C. Weber -- not accepted
  Cereus huilunchu Cárdenas -- not accepted
  Cereus huitcholensis F.A.C. Weber -- not accepted
  Cereus huotii (J.F. Cels) J.F. Cels -- not accepted
  Cereus hyalacanthus K. Schum. -- not accepted
  Cereus hystrix (Haw.) Mill. -- not accepted
  Cereus imbricatus Haw. -- not accepted
  Cereus insularis Hemsl. -- accepted
  Cereus jamacaru DC. -- accepted
  Cereus jamacaru ssp. calcirupicola (F. Ritter) N.P. Taylor & Zappi -- accepted
  Cereus jamacaru ssp. goiasensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus jamacaru ssp. jamacaru DC. -- accepted
  Cereus kroenleinii N.P. Taylor -- accepted
  Cereus lageniformis C.F. Först. -- not accepted
  Cereus lamprospermus K. Schum. -- accepted
  Cereus lamprospermus ssp. colosseus (F. Ritter) P.J. Braun & Esteves -- accepted
  Cereus lamprospermus ssp. lamprospermus K. Schum. -- accepted
  Cereus laniceps K. Schum. -- not accepted
  Cereus lanosus (F. Ritter) P.J. Braun & Esteves -- accepted
  Cereus lauterbachii K. Schum. ex Chodat & Hassl. -- not accepted
  Cereus lindbergianus F.A.C. Weber -- not accepted
  Cereus lindmanii F.A.C. Weber ex K. Schum. -- not accepted
  Cereus litoralis Johow -- not accepted
  Cereus longiflorus Alexander -- not accepted
  Cereus longifolius Karw. ex Sweet -- not accepted
  Cereus margaritensis J.R. Johnst. -- not accepted
  Cereus markgrafii (Backeb. & Voll) P.J. Braun & Esteves -- not accepted
  Cereus martianus Zucc. -- not accepted
  Cereus martinii Labour. -- not accepted
  Cereus melanurus K. Schum. -- not accepted
  Cereus microspermus Werderm. & Backeb. -- not accepted
  Cereus microsphaericus K. Schum. -- not accepted
  Cereus minensis Werderm. -- not accepted
  Cereus mirabella N.P. Taylor -- accepted
  Cereus mortensenii (Croizat) D.R. Hunt & N.P. Taylor -- accepted
  Cereus neonesioticus (F. Ritter) P.J. Braun -- not accepted
  Cereus neotetragonus Backeb. -- not accepted
  Cereus nesioticus K. Schum. -- not accepted
  Cereus nudiflorus Engelm. ex Sauvalle -- not accepted
  Cereus parviflorus K. Schum. -- not accepted
  Cereus paucispinus Engelm. -- not accepted
  Cereus pectinatus var. armatus Poselg. -- not accepted
  Cereus pectinatus var. rigidissimus Engelm. -- not accepted
  Cereus penicillatus Gürke -- not accepted
  Cereus pensilis K. Brandegee -- not accepted
  Cereus pentaedrophorus Labour. -- not accepted
  Cereus pentagonus (L.) Haw. -- not accepted
  Cereus pentalophus var. radicans DC. -- not accepted
  Cereus pentalophus var. simplex DC. -- not accepted
  Cereus perlucens K. Schum. -- not accepted
  Cereus peruvianus (L.) Mill. -- not accepted
  Cereus peruvianus R. Kiesling -- not accepted
  Cereus phaeacanthus Gürke -- not accepted
  Cereus phatnospermus K. Schum. -- accepted
  Cereus phatnospermus ssp. kroenleinii (N.P. Taylor) P.J. Braun & Esteves -- not accepted
  Cereus phoeniceus Engelm. -- not accepted
  Cereus phoeniceus var. pacificus Engelm. ex Orcutt -- not accepted
  Cereus pierre-braunianus Esteves -- accepted
  Cereus plagiostoma Vaupel -- not accepted
  Cereus poselgeri (Lem.) J.M. Coult. -- not accepted
  Cereus pseudomelanostele Werderm. & Backeb. -- not accepted
  Cereus pteranthus Link ex A. Dietr. -- not accepted
  Cereus quadricostatus Bello -- not accepted -- Sebucan
  Cereus repandus (L.) Mill. -- accepted
  Cereus rhodoleucanthus K. Schum. -- not accepted
  Cereus ridleii Andrade-Lima ex Backeb. -- not accepted
  Cereus ritteri P.J. Braun & Esteves -- not accepted
  Cereus ritteri ssp. parapetiensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus robinii (Lem.) L.D. Benson -- not accepted -- Key tree cactus
  Cereus robinii var. keyensis (Britton & Rose) L.D. Benson -- not accepted
  Cereus roseiflorus Speg. -- not accepted
  Cereus royenii (L.) Mill. -- not accepted
  Cereus russelianus Salm-Dyck -- not accepted
  Cereus russelianus (Hook.) Gardner ex Lem. -- not accepted
  Cereus saddianus (Rizzini & A. Mattos) P.J. Braun -- accepted
  Cereus saxicola Morong -- not accepted
  Cereus scheeri Salm-Dyck -- not accepted
  Cereus schickendantzii F.A.C. Weber ex K. Schum. -- not accepted
  Cereus schmollii Weing. -- not accepted
  Cereus schottii Engelm. -- not accepted
  Cereus sciurus K. Brandegee -- not accepted
  Cereus sericifer (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus silvestrii Speg. -- not accepted
  Cereus smithianus Sweet -- not accepted
  Cereus smithianus (Britton & Rose) Werderm. -- not accepted
  Cereus spegazzinii F.A.C. Weber -- accepted
  Cereus spinulosus DC. -- not accepted
  Cereus squarrosus Vaupel -- not accepted
  Cereus stenogonus K. Schum. -- accepted
  Cereus stramineus Engelm. -- not accepted
  Cereus striatus Brandegee -- not accepted
  Cereus strictus DC. -- not accepted
  Cereus tacaquirensis Vaupel -- not accepted
  Cereus tacuaralensis Cárdenas -- not accepted
  Cereus tarijensis Vaupel -- not accepted
  Cereus terscheckii J. Parm. ex Pfeiff. -- not accepted
  Cereus tetragonus (L.) Mill. -- not accepted
  Cereus thelegonoides Speg. -- not accepted
  Cereus thelegonus F.A.C. Weber -- not accepted
  Cereus thurberi Engelm. -- not accepted
  Cereus tominensis Weing. -- not accepted
  Cereus tortuosus J. Forbes ex Otto & A. Dietr. -- not accepted
  Cereus trigonodendron K. Schum. ex Vaupel -- accepted
  Cereus tuberosus Poselg. -- not accepted
  Cereus undatus Haw. -- not accepted
  Cereus undulosus DC. -- not accepted
  Cereus uruguayanus F. Ritter ex R. Kiesling -- not accepted -- hedge cactus, Peruvian apple, Peruvian torch, spine tree cactus
  Cereus vargasianus Cárdenas -- accepted
  Cereus viperinus F.A.C. Weber -- not accepted
  Cereus xanthocarpus K. Schum. -- not accepted
  Chamaecereus Britton & Rose -- not accepted
  Chamaecereus silvestrii (Speg.) Britton & Rose -- not accepted
  Chiapasia Britton & Rose -- not accepted
  Chiapasia nelsonii (Britton & Rose) Britton & Rose -- not accepted
  Chileorebutia F. Ritter -- not accepted
  Chileorebutia duripulpa F. Ritter -- not accepted
  Chileorebutia esmeraldana F. Ritter -- not accepted
  Chileorebutia malleolata F. Ritter -- not accepted
  Cintia Kníze & Ríha -- not accepted
  Cintia knizei Ríha -- not accepted
  Cipocereus F. Ritter -- accepted
  Cipocereus bradei (Backeb. & Voll) Barthlott & N.P. Taylor -- accepted
  Cipocereus crassisepalus (Buining & Brederoo) Barthlott & N.P. Taylor -- accepted
  Cipocereus laniflorus N.P. Taylor & Zappi -- accepted
  Cipocereus minensis (Werderm.) F. Ritter -- accepted
  Cipocereus minensis ssp. leiocarpus N.P. Taylor & Zappi -- accepted
  Cipocereus minensis ssp. minensis (Werderm.) F. Ritter -- accepted
  Cipocereus pleurocarpus F. Ritter -- not accepted
  Cipocereus pusilliflorus (F. Ritter) Barthlott & N.P. Taylor -- accepted
  Cleistocactus Lem. -- accepted
  Cleistocactus acanthurus (Vaupel) D.R. Hunt -- accepted
  Cleistocactus acanthurus ssp. acanthurus (Vaupel) D.R. Hunt -- accepted
  Cleistocactus acanthurus ssp. faustianus (Backeb.) Ostolaza -- accepted
  Cleistocactus acanthurus ssp. pullatus (Rauh & Backeb.) Ostolaza -- accepted
  Cleistocactus angosturensis Cárdenas -- not accepted
  Cleistocactus anguinus (Gürke) Britton & Rose -- not accepted
  Cleistocactus areolatus (Muehlenpf. ex K. Schum.) Riccob. -- not accepted
  Cleistocactus aureispinus (F. Ritter) D.R. Hunt -- not accepted
  Cleistocactus ayopayanus Cárdenas -- accepted
  Cleistocactus azerensis Cárdenas -- not accepted
  Cleistocactus baumannii (Lem.) Lem. -- accepted
  Cleistocactus baumannii ssp. anguinus (Gürke) P.J. Braun & Esteves -- not accepted
  Cleistocactus baumannii ssp. baumannii (Lem.) Lem. -- accepted
  Cleistocactus baumannii ssp. chacoanus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cleistocactus baumannii ssp. croceiflorus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cleistocactus baumannii ssp. horstii (P.J. Braun) N.P. Taylor -- accepted
  Cleistocactus baumannii ssp. santacruzensis (Backeb.) Mottram -- accepted
  Cleistocactus brevispinus F. Ritter -- not accepted
  Cleistocactus brookeae Cárdenas -- accepted
  Cleistocactus brookeae ssp. brookeae Cárdenas -- accepted
  Cleistocactus brookeae ssp. vulpis-cauda (F. Ritter & Cullmann) Mottram -- accepted
  Cleistocactus bruneispinus Backeb. -- not accepted
  Cleistocactus buchtienii Backeb. -- accepted
  Cleistocactus candelilla Cárdenas -- accepted
  Cleistocactus candelilla ssp. candelilla Cárdenas -- accepted
  Cleistocactus candelilla ssp. piraymirensis (Cárdenas) Mottram -- accepted
  Cleistocactus capadalensis F. Ritter -- not accepted
  Cleistocactus chacoanus F. Ritter -- not accepted
  Cleistocactus chotaensis F.A.C. Weber -- not accepted
  Cleistocactus chrysocephalus (F. Ritter) Mottram -- accepted
  Cleistocactus clavicaulis Cárdenas -- not accepted
  Cleistocactus clavispinus (Rauh & Backeb.) Ostolaza -- not accepted
  Cleistocactus compactus Backeb. -- not accepted
  Cleistocactus crassicaulis Cárdenas -- not accepted
  Cleistocactus croceiflorus F. Ritter -- not accepted
  Cleistocactus dependens Cárdenas -- not accepted
  Cleistocactus erectispinus (Rauh & Backeb.) Ostolaza -- not accepted
  Cleistocactus ferrarii R. Kiesling -- not accepted
  Cleistocactus fieldianus (Britton & Rose) D.R. Hunt -- accepted
  Cleistocactus fieldianus ssp. fieldianus (Britton & Rose) D.R. Hunt -- accepted
  Cleistocactus fieldianus ssp. samnensis (F. Ritter) Ostolaza -- not accepted
  Cleistocactus fieldianus ssp. tessellatus (Akers & Buining) Ostolaza -- accepted
  Cleistocactus flavispinus (K. Schum.) Backeb. -- not accepted
  Cleistocactus fossulatus Mottram -- not accepted
  Cleistocactus fusiflorus Cárdenas -- not accepted
  Cleistocactus glaucus F. Ritter -- not accepted
  Cleistocactus granditessellatus (Rauh & Backeb.) Leuenb. -- not accepted
  Cleistocactus granjaensis F. Ritter -- not accepted
  Cleistocactus grossei Backeb. -- not accepted
  Cleistocactus herzogianus Backeb. -- not accepted
  Cleistocactus hildegardiae F. Ritter -- not accepted
  Cleistocactus hoffmannii G.J. Charles -- accepted
  Cleistocactus horstii P.J. Braun -- not accepted
  Cleistocactus humboldtii (Kunth) F.A.C. Weber -- not accepted
  Cleistocactus hyalacanthus (K. Schum.) Rol.-Goss. -- accepted
  Cleistocactus hyalacanthus ssp. hyalacanthus (K. Schum.) Rol.-Goss. -- accepted
  Cleistocactus hyalacanthus ssp. tarijensis (Cárdenas) Mottram -- accepted
  Cleistocactus hystrix (Rauh & Backeb.) Ostolaza -- accepted
  Cleistocactus ianthinus Cárdenas -- not accepted
  Cleistocactus icosagonus (Kunth) F.A.C. Weber -- accepted
  Cleistocactus jajoanus (Backeb.) G.J. Charles -- accepted
  Cleistocactus jujuyensis (Backeb.) Backeb. -- not accepted
  Cleistocactus laniceps (K. Schum.) Rol.-Goss. -- accepted
  Cleistocactus leonensis Madsen -- accepted
  Cleistocactus longiserpens Leuenb. -- accepted
  Cleistocactus luribayensis Cárdenas -- accepted
  Cleistocactus mendozae Cárdenas -- not accepted
  Cleistocactus micropetalus F. Ritter -- not accepted
  Cleistocactus morawetzianus Backeb. -- accepted
  Cleistocactus morawetzianus var. pycnacanthus Rauh & Backeb. -- not accepted
  Cleistocactus muyurinensis F. Ritter -- not accepted
  Cleistocactus neoroezlii (F. Ritter) Buxb. -- accepted
  Cleistocactus orthogonus Cárdenas -- not accepted
  Cleistocactus pachycladus (Rauh & Backeb.) Ostolaza -- accepted
  Cleistocactus palhuayensis F. Ritter & Shahori -- not accepted
  Cleistocactus paraguariensis F. Ritter -- not accepted
  Cleistocactus parapetiensis Cárdenas -- accepted
  Cleistocactus parviflorus (K. Schum.) Rol.-Goss. -- accepted
  Cleistocactus peculiaris (Rauh & Backeb.) Ostolaza -- not accepted
  Cleistocactus piraymirensis Cárdenas -- not accepted
  Cleistocactus plagiostoma (Vaupel) D.R. Hunt -- accepted
  Cleistocactus pojoensis (Cárdenas) Backeb. -- not accepted
  Cleistocactus pungens F. Ritter -- accepted
  Cleistocactus pycnacanthus (Rauh & Backeb.) Backeb. -- accepted
  Cleistocactus reae Cárdenas -- accepted
  Cleistocactus ressinianus Cárdenas -- not accepted
  Cleistocactus ritteri Backeb. -- accepted
  Cleistocactus roezlii (Haage) Backeb. -- not accepted
  Cleistocactus roseiflorus (Buining) G.D. Rowley -- not accepted
  Cleistocactus samaipatanus (Cárdenas) D.R. Hunt -- accepted
  Cleistocactus santacruzensis Backeb. -- not accepted
  Cleistocactus sepium (Kunth) F.A.C. Weber -- accepted
  Cleistocactus sextonianus (Backeb.) D.R. Hunt -- accepted
  Cleistocactus smaragdiflorus (F.A.C. Weber) Britton & Rose -- accepted
  Cleistocactus strausii (Heese) Backeb. -- accepted
  Cleistocactus sucrensis Cárdenas -- not accepted
  Cleistocactus sulcifer (Rauh & Backeb.) Leuenb. -- accepted
  Cleistocactus tarijensis Cárdenas -- not accepted
  Cleistocactus tenuiserpens Rauh & Backeb. -- accepted
  Cleistocactus tominensis (Weing.) Backeb. -- accepted
  Cleistocactus tominensis ssp. micropetalus (F. Ritter) Mottram -- accepted
  Cleistocactus tominensis ssp. tominensis (Weing.) Backeb. -- accepted
  Cleistocactus vallegrandensis Cárdenas -- not accepted
  Cleistocactus varispinus F. Ritter -- accepted
  Cleistocactus villaazuensis F. Ritter -- not accepted
  Cleistocactus villaazulensis F. Ritter -- not accepted
  Cleistocactus viridialabastri Cárdenas -- not accepted
  Cleistocactus viridiflorus Backeb. -- not accepted
  Cleistocactus vulpis-cauda F. Ritter & Cullmann -- not accepted
  Cleistocactus wendlandiorum Backeb. -- not accepted
  Cleistocactus winteri D.R. Hunt -- accepted
  Cleistocactus winteri ssp. colademono D.R. Hunt -- accepted
  Cleistocactus winteri ssp. winteri D.R. Hunt -- accepted
  Cleistocactus xylorhizus (F. Ritter) Ostolaza -- accepted
  Clistanthocereus Backeb. -- not accepted
  Clistanthocereus calviflorus (F. Ritter) Backeb. -- not accepted
  Clistanthocereus fieldianus (Britton & Rose) Backeb. -- not accepted
  Clistanthocereus hertlingianus Backeb. -- not accepted
  Clistanthocereus samnensis (F. Ritter) Backeb. -- not accepted
  Clistanthocereus tessellatus (Akers & Buining) Backeb. -- not accepted
  Cochemiea (K. Brandegee) Walton -- not accepted
  Cochemiea halei (Brandegee) Britton & Rose -- not accepted
  Cochemiea maritima G.E. Linds. -- not accepted
  Cochemiea pondii (Greene) Walton -- not accepted
  Cochemiea pondii ssp. maritima (G.E. Linds.) U. Guzmán -- not accepted
  Cochemiea pondii ssp. setispina (J.M. Coult.) U. Guzmán -- not accepted
  Cochemiea poselgeri (Hildm.) Britton & Rose -- not accepted
  Cochemiea setispina (J.M. Coult.) Walton -- not accepted
  Cochiseia W.H. Earle -- not accepted
  Cochiseia robbinsiorum W.H. Earle -- not accepted
  Coleocephalocereus Backeb. -- accepted
  Coleocephalocereus albicephalus (Buining & Brederoo) F.H. Brandt -- not accepted
  Coleocephalocereus aureispinus Buining & Brederoo -- not accepted
  Coleocephalocereus aureus F. Ritter -- accepted
  Coleocephalocereus braunii Diers & Esteves -- accepted
  Coleocephalocereus brevicylindricus (Buining) F. Ritter -- not accepted
  Coleocephalocereus buxbaumianus Buining -- accepted
  Coleocephalocereus buxbaumianus ssp. buxbaumianus Buining -- accepted
  Coleocephalocereus buxbaumianus ssp. flavisetus (F. Ritter) N.P. Taylor & Zappi -- accepted
  Coleocephalocereus decumbens F. Ritter -- not accepted
  Coleocephalocereus diersianus P.J. Braun & Esteves -- accepted
  Coleocephalocereus dybowskii (Rol.-Goss.) F.H. Brandt -- not accepted
  Coleocephalocereus elongatus (Buining) P.J. Braun -- not accepted
  Coleocephalocereus estevesii Diers -- not accepted
  Coleocephalocereus flavisetus F. Ritter -- not accepted
  Coleocephalocereus fluminensis (Miq.) Backeb. -- accepted
  Coleocephalocereus fluminensis ssp. braamhaarii (P.J. Braun) P.J. Braun & Esteves -- not accepted
  Coleocephalocereus fluminensis ssp. decumbens (F. Ritter) N.P. Taylor & Zappi -- accepted
  Coleocephalocereus fluminensis ssp. fluminensis (Miq.) Backeb. -- accepted
  Coleocephalocereus fluminensis ssp. paulensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Coleocephalocereus fluminensis var. braamhaarii P.J. Braun -- not accepted
  Coleocephalocereus goebelianus (Vaupel) Buining & Brederoo -- accepted
  Coleocephalocereus lehmannianus (Werderm.) F.H. Brandt -- not accepted
  Coleocephalocereus pluricostatus Buining & Brederoo -- accepted
  Coleocephalocereus pluricostatus ssp. uebelmanniorum P.J. Braun & Esteves -- not accepted
  Coleocephalocereus purpureus (Buining & Brederoo) F. Ritter -- accepted
  Coleocephalocereus uebelmanniorum (P.J. Braun & Esteves) P.J. Braun, Esteves & Hofacker -- not accepted
  Coloradoa Boissev. & C. Davidson -- not accepted
  Coloradoa mesae-verdae Boissev. & C. Davidson -- not accepted
  Consolea Lem. -- accepted
  Consolea bahamana A. Berger -- not accepted
  Consolea corallicola Small -- accepted -- Florida semaphore cactus
  Consolea falcata (Ekman & Werderm.) F.M. Knuth -- not accepted
  Consolea macracantha (Griseb.) A. Berger -- accepted
  Consolea microcarpa (K. Schum.) E.F. Anderson -- not accepted
  Consolea millspaughii A. Berger -- not accepted
  Consolea millspaughii ssp. caymanensis Areces -- not accepted
  Consolea millspaughii var. caymanensis Areces -- not accepted
  Consolea moniliformis (Haw. ex Steud.) A. Berger -- accepted
  Consolea moniliformis ssp. guantanamana Areces -- not accepted
  Consolea nashii A. Berger -- not accepted
  Consolea nashii ssp. gibarensis Areces -- not accepted
  Consolea picardae (Urb.) Areces -- not accepted
  Consolea spinosissima Lem. -- accepted
  Copiapoa Britton & Rose -- accepted
  Copiapoa ahremephiana N.P. Taylor & G.J. Charles -- accepted
  Copiapoa alticostata F. Ritter -- not accepted
  Copiapoa aphanes Mächler & Helmut Walter -- not accepted
  Copiapoa atacamensis Middled. -- not accepted
  Copiapoa boliviana (Pfeiff.) F. Ritter -- not accepted
  Copiapoa bridgesii (Pfeiff.) Backeb. -- not accepted
  Copiapoa calderiana F. Ritter -- accepted
  Copiapoa calderiana ssp. atacamensis (Middled.) Mottram -- accepted
  Copiapoa calderiana ssp. calderiana F. Ritter -- accepted
  Copiapoa calderiana ssp. longistaminea (F. Ritter) N.P. Taylor -- not accepted
  Copiapoa carrizalensis F. Ritter -- not accepted
  Copiapoa chaniaralensis F. Ritter -- not accepted
  Copiapoa cinerascens (Salm-Dyck) Britton & Rose -- accepted
  Copiapoa cinerea (Phil.) Britton & Rose -- accepted
  Copiapoa cinerea ssp. cinerea (Phil.) Britton & Rose -- accepted
  Copiapoa cinerea ssp. columna-alba (F. Ritter) D.R. Hunt -- accepted
  Copiapoa cinerea ssp. dealbata (F. Ritter) Slaba -- not accepted
  Copiapoa cinerea ssp. haseltoniana (Backeb.) N.P. Taylor -- accepted
  Copiapoa cinerea ssp. krainziana (F. Ritter) Slaba -- not accepted
  Copiapoa cinerea ssp. longistaminea (F. Ritter) Mereg. -- not accepted
  Copiapoa cinerea var. dealbata (F. Ritter) Slaba -- not accepted
  Copiapoa cinerea var. gigantea (Backeb.) N.P. Taylor -- not accepted
  Copiapoa cinerea var. krainziana (F. Ritter) G.J. Charles -- not accepted
  Copiapoa cinerea var. longistaminea (F. Ritter) Slaba -- not accepted
  Copiapoa columna-alba F. Ritter -- not accepted
  Copiapoa coquimbana (Karw. ex Rümpler) Britton & Rose -- accepted
  Copiapoa cuprea F. Ritter -- not accepted
  Copiapoa cupreata (Poselg. ex Rümpler) Backeb. -- not accepted
  Copiapoa dealbata F. Ritter -- accepted
  Copiapoa decorticans N.P. Taylor & G.J. Charles -- accepted
  Copiapoa desertorum F. Ritter -- not accepted
  Copiapoa dura F. Ritter -- not accepted
  Copiapoa echinata F. Ritter -- not accepted
  Copiapoa echinoides (Lem.) Britton & Rose -- accepted
  Copiapoa eremophila F. Ritter -- not accepted
  Copiapoa esmeraldana F. Ritter -- accepted
  Copiapoa ferox Lembcke & Backeb. -- not accepted
  Copiapoa fiedleriana (K. Schum.) Backeb. -- accepted
  Copiapoa gigantea Backeb. -- not accepted
  Copiapoa grandiflora F. Ritter -- accepted
  Copiapoa haseltoniana Backeb. -- not accepted
  Copiapoa hornilloensis F. Ritter -- not accepted
  Copiapoa humilis (Phil.) Hutchison -- accepted
  Copiapoa humilis ssp. australis Hoxey -- not accepted
  Copiapoa humilis ssp. humilis (Phil.) Hutchison -- accepted
  Copiapoa humilis ssp. tenuissima (F. Ritter) D.R. Hunt -- accepted
  Copiapoa humilis ssp. tocopillana (F. Ritter) D.R. Hunt -- accepted
  Copiapoa humilis ssp. variispinata (F. Ritter) D.R. Hunt -- accepted
  Copiapoa hypogaea F. Ritter -- accepted
  Copiapoa hypogaea ssp. hypogaea F. Ritter -- accepted
  Copiapoa hypogaea ssp. laui (Diers) G.J. Charles -- accepted
  Copiapoa hypogaea ssp. tenuissima F. Ritter ex D.R. Hunt -- not accepted
  Copiapoa krainziana F. Ritter -- accepted
  Copiapoa laui Diers -- not accepted
  Copiapoa lembckei Backeb. -- not accepted
  Copiapoa longispina F. Ritter -- not accepted
  Copiapoa longistaminea F. Ritter -- accepted
  Copiapoa marginata (Salm-Dyck) Britton & Rose -- accepted
  Copiapoa megarhiza Britton & Rose -- accepted
  Copiapoa megarhiza var. echinata (F. Ritter) A.E. Hoffm. -- accepted
  Copiapoa megarhiza var. megarhiza Britton & Rose -- accepted
  Copiapoa melanohystrix F. Ritter -- not accepted
  Copiapoa mollicula F. Ritter -- not accepted
  Copiapoa montana F. Ritter -- accepted
  Copiapoa montana ssp. grandiflora (F. Ritter) N.P. Taylor -- not accepted
  Copiapoa olivana F. Ritter -- not accepted
  Copiapoa paposoensis F. Ritter -- not accepted
  Copiapoa pendulina F. Ritter -- not accepted
  Copiapoa pepiniana (Lem. ex Salm-Dyck) Backeb. -- not accepted
  Copiapoa pseudocoquimbana F. Ritter -- not accepted
  Copiapoa rarissima F. Ritter -- not accepted
  Copiapoa rubriflora F. Ritter -- not accepted
  Copiapoa rupestris F. Ritter -- not accepted
  Copiapoa serpentisulcata F. Ritter -- accepted
  Copiapoa solaris (F. Ritter) F. Ritter -- accepted
  Copiapoa streptocaulon (Hook.) Oosten -- not accepted
  Copiapoa taltalensis (Werderm.) Looser -- accepted
  Copiapoa taltalensis ssp. desertorum (F. Ritter) G.J. Charles -- accepted
  Copiapoa taltalensis ssp. taltalensis (Werderm.) Looser -- accepted
  Copiapoa tenebrosa F. Ritter -- not accepted
  Copiapoa tenuissima F. Ritter -- not accepted
  Copiapoa tocopillana F. Ritter -- not accepted
  Copiapoa totoralensis F. Ritter -- not accepted
  Copiapoa vallenarensis F. Ritter -- not accepted
  Copiapoa variispinata F. Ritter -- not accepted
  Corryocactus Britton & Rose -- accepted
  Corryocactus acervatus F. Ritter -- not accepted
  Corryocactus apiciflorus (Vaupel) Hutchison -- accepted
  Corryocactus aureus (F.A.C. Weber) Hutchison -- accepted
  Corryocactus ayacuchoensis Rauh & Backeb. -- accepted
  Corryocactus ayopayanus Cárdenas -- not accepted
  Corryocactus brachycladus F. Ritter -- not accepted
  Corryocactus brachypetalus (Vaupel) Britton & Rose -- accepted
  Corryocactus brevispinus Rauh & Backeb. -- not accepted
  Corryocactus brevistylus (K. Schum. ex Vaupel) Britton & Rose -- accepted
  Corryocactus brevistylus ssp. puquiensis (Rauh & Backeb.) Ostolaza -- not accepted
  Corryocactus brevistylus var. puquiensis (Rauh & Backeb.) F. Ritter -- not accepted
  Corryocactus chachapoyensis Ochoa & Backeb. ex D.R. Hunt -- accepted
  Corryocactus charazanensis Cárdenas -- not accepted
  Corryocactus chavinilloensis F. Ritter -- not accepted
  Corryocactus cuajonesensis F. Ritter -- not accepted
  Corryocactus erectus (Backeb.) F. Ritter -- accepted
  Corryocactus gracilis F. Ritter -- not accepted
  Corryocactus heteracanthus Backeb. -- not accepted
  Corryocactus huincoensis F. Ritter -- not accepted
  Corryocactus krausii Backeb. -- not accepted
  Corryocactus matucanensis F. Ritter -- not accepted
  Corryocactus maximus (Backeb.) Hutchison -- not accepted
  Corryocactus megarhizus F. Ritter -- not accepted
  Corryocactus melaleucus F. Ritter -- not accepted
  Corryocactus melanotrichus (K. Schum.) Britton & Rose -- accepted
  Corryocactus odoratus F. Ritter -- not accepted
  Corryocactus pachycladus Rauh & Backeb. -- not accepted
  Corryocactus pilispinus F. Ritter -- not accepted
  Corryocactus prostratus F. Ritter -- not accepted
  Corryocactus pulquinensis Cárdenas -- not accepted
  Corryocactus puquiensis Rauh & Backeb. -- not accepted
  Corryocactus pyroporphyranthus F. Ritter -- not accepted
  Corryocactus quadrangularis (Rauh & Backeb.) F. Ritter -- accepted
  Corryocactus quivillanus F. Ritter -- not accepted
  Corryocactus serpens F. Ritter -- accepted
  Corryocactus solitarius F. Ritter -- not accepted
  Corryocactus spiniflorus (Phil.) Hutchison -- not accepted
  Corryocactus squarrosus (Vaupel) Hutchison -- accepted
  Corryocactus tarijensis Cárdenas -- accepted
  Corryocactus tenuiculus (Backeb.) Hutchison -- not accepted
  Corynopuntia F.M. Knuth -- accepted
  Corynopuntia bulbispina (Engelm.) F.M. Knuth -- accepted
  Corynopuntia dumetorum (A. Berger) F.M. Knuth -- not accepted
  Corynopuntia invicta (Brandegee) F.M. Knuth -- accepted
  Corynopuntia marenae (S.H. Parsons) M.P. Griff. -- accepted
  Corynopuntia moelleri (A. Berger) F.M. Knuth -- accepted
  Corynopuntia reflexispina (Wiggins & Rollins) Backeb. -- accepted
  Corynopuntia vilis (Rose) F.M. Knuth -- accepted
  Coryphantha (Engelm.) Lem. -- accepted -- beehive cactus
  Coryphantha aggregata (Engelm.) Britton & Rose -- not accepted
  Coryphantha albicolumnaria (Hester) Zimmerman -- not accepted -- white column cory cactus
  Coryphantha alversonii (J.M. Coult.) Orcutt -- not accepted
  Coryphantha andreae (J.A. Purpus & Boed.) A. Berger -- not accepted
  Coryphantha arizonica (Engelm. ex Brew & Wats) Britton & Rose -- not accepted
  Coryphantha asperispina Boed. -- not accepted
  Coryphantha bergeriana Boed. -- not accepted
  Coryphantha bernalensis L. Bremer -- not accepted
  Coryphantha borwigii J.A. Purpus ex A. Berger -- not accepted
  Coryphantha bumamma (Ehrenb.) Britton & Rose -- not accepted
  Coryphantha bussleri (Mundt) Scheinvar -- not accepted
  Coryphantha calipensis Bravo ex S. Arias Montes, U. Guzman Cruz & S. Gama Lopez -- not accepted
  Coryphantha calochlora Boed. -- not accepted
  Coryphantha chaffeyi (Britton & Rose) Fosberg -- not accepted -- Chaffey's cory cactus
  Coryphantha chlorantha (Engelm.) Britton & Rose -- not accepted
  Coryphantha clavata (Scheidw.) Backeb. -- accepted
  Coryphantha clavata ssp. clavata (Scheidw.) Backeb. -- accepted
  Coryphantha clavata ssp. stipitata (Scheidw.) Dicht & A. Lüthy -- accepted
  Coryphantha columnaris Lahman -- not accepted
  Coryphantha compacta (Engelm.) Britton & Rose -- accepted
  Coryphantha conimamma (Linke) A. Berger -- not accepted
  Coryphantha connivens Britton & Rose -- not accepted
  Coryphantha cornifera (DC.) Lem. -- accepted -- Biznaga-partida de cuernos, rhinoceros cactus
  Coryphantha cornifera var. echinus (Engelm.) L.D. Benson -- not accepted -- rhinoceros cactus
  Coryphantha cornuta (Hildm. ex K.Schum.) A. Berger -- not accepted
  Coryphantha cubensis Britton & Rose -- not accepted
  Coryphantha cuencamensis L. Bremer -- not accepted
  Coryphantha dasyacantha (Engelm.) Orcutt -- not accepted
  Coryphantha dasyacantha var. varicolor (Tiegel) L.D. Benson -- not accepted
  Coryphantha delaetiana (Quehl) A. Berger -- accepted
  Coryphantha delicata L. Bremer -- accepted
  Coryphantha densispina Werderm. -- not accepted
  Coryphantha deserti (Engelm.) Britton & Rose -- not accepted
  Coryphantha difficilis (Quehl) Orcutt -- accepted
  Coryphantha duncanii (Hester) L.D. Benson -- not accepted -- Duncan's cory cactus
  Coryphantha durangensis (Runge ex K. Schum.) Britton & Rose -- accepted
  Coryphantha durangensis ssp. cuencamensis (L. Bremer) Dicht & A. Lüthy -- accepted
  Coryphantha durangensis ssp. durangensis (Runge ex K. Schum.) Britton & Rose -- accepted
  Coryphantha echinoidea (Quehl) Britton & Rose -- accepted
  Coryphantha echinus (Engelm.) Orcutt -- accepted
  Coryphantha elephantidens (Lem.) Lem. -- accepted
  Coryphantha elephantidens ssp. bumamma (Ehrenb.) Dicht & A. Lüthy -- accepted
  Coryphantha elephantidens ssp. elephantidens (Lem.) Lem. -- accepted
  Coryphantha elephantidens ssp. greenwoodii (Bravo) Dicht & A. Lüthy -- accepted
  Coryphantha erecta (Lem.) Lem. -- accepted
  Coryphantha garessii L. Bremer -- not accepted
  Coryphantha georgii Boed. -- accepted
  Coryphantha gladiispina (Boed.) A. Berger -- not accepted
  Coryphantha glanduligera (Otto & A. Dietr.) Lem. -- accepted
  Coryphantha glassii Dicht & A. Lüthy -- accepted
  Coryphantha gracilis L. Bremer & A.B. Lau -- accepted
  Coryphantha grandis L. Bremer -- not accepted
  Coryphantha grata L. Bremer -- not accepted
  Coryphantha greenwoodii Bravo -- not accepted
  Coryphantha guerkeana (Boed.) Britton & Rose -- not accepted
  Coryphantha henricksonii (Glass & R.A. Foster) Glass & R.A. Foster -- not accepted
  Coryphantha hesteri Y. Wright -- not accepted -- Hester's cory cactus
  Coryphantha hintoniorum Dicht & A. Lüthy -- accepted
  Coryphantha hintoniorum ssp. geoffreyi Dicht & A. Lüthy -- accepted
  Coryphantha hintoniorum ssp. hintoniorum Dicht & A. Lüthy -- accepted
  Coryphantha indensis L. Bremer -- not accepted
  Coryphantha jalpanensis Buchenau -- accepted
  Coryphantha kracikii Halda, Chalupa & Kupcák -- accepted
  Coryphantha laredoi Glass & R.A. Foster -- not accepted
  Coryphantha laui L. Bremer -- not accepted
  Coryphantha longicornis Boed. -- accepted
  Coryphantha macromeris (Engelm.) Lem. -- accepted -- Biznaga-partida partida, nipple beehive cactus
  Coryphantha macromeris ssp. macromeris (Engelm.) Lem. -- accepted
  Coryphantha macromeris ssp. runyonii (Britton & Rose) N.P. Taylor -- accepted
  Coryphantha macromeris var. runyonii (Britton & Rose) L.D. Benson -- not accepted -- Runyon's beehive cactus
  Coryphantha maiz-tablasensis Fritz Schwartz ex Backeb. -- accepted
  Coryphantha maliterrarum L. Bremer -- not accepted
  Coryphantha melleospina Bravo -- not accepted
  Coryphantha minima Baird -- not accepted -- Nellie Cory cactus
  Coryphantha missouriensis (Sweet) Britton & Rose -- not accepted
  Coryphantha missouriensis var. caespitosa (Engelm.) L.D. Benson -- not accepted
  Coryphantha missouriensis var. marstonii (Clover) L.D. Benson -- not accepted
  Coryphantha missouriensis var. robustior (Engelm.) L.D. Benson -- not accepted
  Coryphantha muehlenpfordtii (Poselg.) Britton & Rose -- not accepted
  Coryphantha muehlenpfordtii ssp. robustispina (A. Schott ex Engelm.) Dicht -- not accepted
  Coryphantha muehlenpfordtii var. robustispina (A. Schott ex Engelm.) W.T. Marshall -- not accepted
  Coryphantha neglecta L. Bremer -- accepted
  Coryphantha nellieae Croizat -- not accepted
  Coryphantha neoscheeri Backeb. -- not accepted
  Coryphantha nickelsiae (K. Brandegee) Britton & Rose -- accepted -- Biznaga-partida de Laredo, Nickels' cactus
  Coryphantha obscura Boed. -- not accepted
  Coryphantha octacantha (DC.) Britton & Rose -- accepted
  Coryphantha odorata Boed. -- accepted
  Coryphantha orcuttii (Boed.) Zimmerman -- not accepted
  Coryphantha organensis Zimmerman -- not accepted
  Coryphantha ottonis (Pfeiff.) Lem. -- accepted
  Coryphantha pallida Britton & Rose -- accepted
  Coryphantha pallida ssp. calipensis (Bravo ex S. Arias Montes, U. Guzman Cruz & S. Gama Lopez) R.F. Dicht & A. Lüthy -- accepted
  Coryphantha pallida ssp. pallida Britton & Rose -- accepted
  Coryphantha palmeri Britton & Rose -- not accepted
  Coryphantha panarottoi Halda & Horácek -- not accepted
  Coryphantha pectinata (Engelm.) Britton & Rose -- not accepted
  Coryphantha pirtlei Werderm. -- not accepted
  Coryphantha poselgeriana (A. Dietr.) Britton & Rose -- accepted
  Coryphantha potosiana (Jacobi) Glass & R.A. Foster -- accepted
  Coryphantha pseudoechinus Boed. -- accepted
  Coryphantha pseudoechinus ssp. laui (L. Bremer) Dicht & A. Lüthy -- accepted
  Coryphantha pseudoechinus ssp. pseudoechinus Boed. -- accepted
  Coryphantha pseudonickelsae Backeb. -- accepted
  Coryphantha pseudoradians Bravo -- not accepted
  Coryphantha pulleineana (Backeb.) Glass -- accepted
  Coryphantha pusilliflora L. Bremer -- not accepted
  Coryphantha pycnacantha (Mart.) Lem. -- accepted
  Coryphantha radians (DC.) Britton & Rose -- not accepted
  Coryphantha ramillosa Cutak -- accepted -- whiskerbush, bunched cory cactus
  Coryphantha ramillosa ssp. ramillosa Cutak -- accepted
  Coryphantha ramillosa ssp. santarosa Dicht & A. Lüthy -- accepted
  Coryphantha recurvata (Engelm.) Britton & Rose -- accepted -- Biznaga-partida de espinas curvas, Santa Cruz beehive cactus
  Coryphantha recurvispina (de Vriese) L. Bremer -- not accepted
  Coryphantha reduncuspina Boed. -- not accepted
  Coryphantha retusa (Pfeiff.) Britton & Rose -- accepted
  Coryphantha robbinsiorum (W.H. Earle) A.D. Zimmerman -- not accepted -- Cochise pincushion cactus
  Coryphantha robbinsorum (W.H. Earle) A.D. Zimmerman -- not accepted -- Cochise pincushion cactus
  Coryphantha robertii A. Berger -- not accepted
  Coryphantha robustispina (A. Schott ex Engelm.) Britton & Rose -- accepted -- Biznaga-partida de espinas gruesas
  Coryphantha robustispina ssp. robustispina (A. Schott ex Engelm.) Britton & Rose -- accepted
  Coryphantha robustispina ssp. scheeri (Lem.) N.P. Taylor -- accepted
  Coryphantha robustispina ssp. uncinata (L.D. Benson) N.P. Taylor -- not accepted
  Coryphantha roederiana Boed. -- not accepted
  Coryphantha runyonii Britton & Rose -- not accepted
  Coryphantha salinensis (Poselg.) Dicht & A. Lüthy -- accepted
  Coryphantha salm-dyckiana (Scheer) Britton & Rose -- not accepted
  Coryphantha scheeri (Muehlenpf.) L.D. Benson -- not accepted -- Biznaga-partida mula, Scheer's beehive cactus, beehive coryphantha
  Coryphantha scheeri var. robustispina (A. Schott ex Engelm.) L.D. Benson -- not accepted -- longtubercle beehive cactus, Pima pineapple cactus
  Coryphantha scheeri var. uncinata L.D. Benson -- not accepted -- Scheer's beehive cactus
  Coryphantha schwarziana Boed. -- not accepted
  Coryphantha similis (Engelm.) Britton & Rose -- not accepted
  Coryphantha sneedii (Britton & Rose) A. Berger -- not accepted -- Sneed pincushion cactus
  Coryphantha sneedii var. leei (Rose ex Boed.) L.D. Benson -- not accepted -- Lee pincushion cactus
  Coryphantha speciosa Boed. -- not accepted
  Coryphantha strobiliformis (Poselg.) Orcutt -- not accepted
  Coryphantha strobiliformis var. durispina (Quehl) L.D. Benson -- not accepted
  Coryphantha strobiliformis var. orcuttii (Boed.) L.D. Benson -- not accepted
  Coryphantha sulcata (Engelm.) Britton & Rose -- accepted -- pineapple cactus, finger cactus
  Coryphantha sulcata var. nickelsiae (K. Brandegee) L.D. Benson -- not accepted -- Nickels' cory cactus
  Coryphantha tripugionacantha A.B. Lau -- accepted
  Coryphantha unicornis Boed. -- not accepted
  Coryphantha valida (J.A. Purpus) L. Bremer -- not accepted
  Coryphantha vaupeliana Boed. -- accepted
  Coryphantha villarensis Backeb. -- not accepted
  Coryphantha vivipara (Nutt.) Britton & Rose -- not accepted
  Coryphantha vivipara var. aggregata (Engelm.) W.T. Marshall -- not accepted
  Coryphantha vivipara var. alversonii (J.M. Coult.) L.D. Benson -- not accepted -- Alverson's foxtail cactus
  Coryphantha vogtherriana Werderm. & Boed. -- accepted
  Coryphantha wohlschlageri Holzeis -- accepted
  Coryphantha zilziana Boed. -- not accepted
  Cryptocereus Alexander -- not accepted
  Cryptocereus anthonyanus Alexander -- not accepted
  Cryptocereus imitans (Kimnach & Hutchison) Backeb. -- not accepted
  Cryptocereus rosei (Kimnach) Backeb. -- not accepted
  Cumarinia (F.M. Knuth) Buxb. -- not accepted
  Cumarinia odorata (Boed.) Buxb. -- not accepted
  Cumulopuntia F. Ritter -- accepted
  Cumulopuntia alboareolata (F. Ritter) F. Ritter -- not accepted
  Cumulopuntia berteroi (Colla) F. Ritter -- not accepted
  Cumulopuntia boliviana (Salm-Dyck) F. Ritter -- accepted
  Cumulopuntia boliviana ssp. boliviana (Salm-Dyck) F. Ritter -- accepted
  Cumulopuntia boliviana ssp. dactylifera (Vaupel) D.R. Hunt -- accepted
  Cumulopuntia boliviana ssp. echinacea (F. Ritter) D.R. Hunt -- accepted
  Cumulopuntia boliviana ssp. ignescens (Vaupel) D.R. Hunt -- accepted
  Cumulopuntia chichensis (Cárdenas) E.F. Anderson -- accepted
  Cumulopuntia corotilla (K. Schum. ex Vaupel) E.F. Anderson -- not accepted
  Cumulopuntia crassicylindrica (Rauh & Backeb.) F. Ritter ex Eggli -- not accepted
  Cumulopuntia dactylifera (Vaupel) E.F. Anderson -- not accepted
  Cumulopuntia echinacea (F. Ritter) F. Ritter -- not accepted
  Cumulopuntia famatinensis F. Ritter -- not accepted
  Cumulopuntia frigida F. Ritter -- not accepted
  Cumulopuntia fulvicoma (Rauh & Backeb.) E.F. Anderson -- not accepted
  Cumulopuntia galerasensis F. Ritter -- not accepted
  Cumulopuntia hystrix F. Ritter -- not accepted
  Cumulopuntia ignescens (Vaupel) F. Ritter -- not accepted
  Cumulopuntia ignota (Britton & Rose) F. Ritter -- not accepted
  Cumulopuntia kuehnrichiana (Werderm. & Backeb.) F. Ritter -- not accepted
  Cumulopuntia mistiensis (Backeb.) E.F. Anderson -- not accepted
  Cumulopuntia multiareolata (F. Ritter) F. Ritter -- not accepted
  Cumulopuntia pampana F. Ritter -- not accepted
  Cumulopuntia pyrrhacantha (K. Schum.) F. Ritter -- not accepted
  Cumulopuntia rauppiana (K. Schum.) F. Ritter -- not accepted
  Cumulopuntia recurvata Gilmer & H.P. Thomas -- not accepted
  Cumulopuntia rossiana (Heinrich & Backeb.) F. Ritter -- accepted
  Cumulopuntia sphaerica (C.F. Först.) E.F. Anderson -- accepted
  Cumulopuntia subterranea (R.E. Fr.) F. Ritter -- not accepted
  Cumulopuntia ticnamarensis F. Ritter -- not accepted
  Cumulopuntia tortispina F. Ritter -- not accepted
  Cumulopuntia tubercularis F. Ritter -- not accepted
  Cumulopuntia tumida F. Ritter -- not accepted
  Cumulopuntia unguispina (Backeb.) F. Ritter -- not accepted
  Cumulopuntia zehnderi (Rauh & Backeb.) F. Ritter -- not accepted
  Cylindropuntia (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia abyssi (Hester) Backeb. -- accepted -- Peach Springs cholla
  Cylindropuntia acanthocarpa (Engelm. & J.M. Bigelow) F.M. Knuth -- accepted
  Cylindropuntia acanthocarpa ssp. acanthocarpa (Engelm. & J.M. Bigelow) F.M. Knuth -- accepted
  Cylindropuntia acanthocarpa ssp. coloradensis (L.D. Benson) U. Guzmán -- accepted
  Cylindropuntia acanthocarpa ssp. major (Engelm. & J.M. Bigelow) U. Guzmán -- accepted
  Cylindropuntia acanthocarpa var. thornberi (Thornber & Bonker) Backeb. -- accepted
  Cylindropuntia alamosensis (Britton & Rose) Backeb. -- not accepted
  Cylindropuntia alcahes (F.A.C. Weber) F.M. Knuth -- accepted
  Cylindropuntia alcahes var. alcahes (F.A.C. Weber) F.M. Knuth -- accepted
  Cylindropuntia alcahes var. burrageana (Britton & Rose) Rebman -- accepted
  Cylindropuntia anteojoensis (Pinkava) E.F. Anderson -- accepted
  Cylindropuntia arbuscula (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia bigelovii (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia bigelovii var. bigelovii (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia bigelovii var. ciribe (Engelm. ex J.M. Coult.) Rebman -- accepted
  Cylindropuntia brevispina (H.E. Gates) Backeb. -- not accepted
  Cylindropuntia brittonii (J.G. Ortega) Backeb. -- not accepted
  Cylindropuntia burrageana (Britton & Rose) Backeb. -- not accepted
  Cylindropuntia californica (Torr. & A. Gray) F.M. Knuth -- accepted
  Cylindropuntia californica var. californica (Torr. & A. Gray) F.M. Knuth -- accepted
  Cylindropuntia californica var. delgadilloana (Rebman & Pinkava) Rebman -- accepted
  Cylindropuntia californica var. parkeri (J.M. Coult.) Pinkava -- accepted
  Cylindropuntia californica var. rosarica (G.E. Linds.) Rebman -- accepted
  Cylindropuntia calmalliana (J.M. Coult.) F.M. Knuth -- not accepted
  Cylindropuntia caribaea (Britton & Rose) F.M. Knuth -- accepted
  Cylindropuntia cholla (F.A.C. Weber) F.M. Knuth -- accepted
  Cylindropuntia ciribe (Engelm.) F.M. Knuth -- not accepted
  Cylindropuntia clavellina (Engelm. ex J.M. Coult.) F.M. Knuth -- not accepted
  Cylindropuntia davisii (Engelm. & J.M. Bigelow) F.M. Knuth -- accepted
  Cylindropuntia delgadilloana Rebman & Pinkava -- not accepted
  Cylindropuntia echinocarpa (Engelm. & J.M. Bigelow) F.M. Knuth -- accepted
  Cylindropuntia fulgida (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia fulgida var. fulgida (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia fulgida var. mamillata (A. Schott ex Engelm.) Backeb. -- accepted
  Cylindropuntia ganderi (C.B. Wolf) Rebman & Pinkava -- accepted
  Cylindropuntia haematacantha Backeb. -- not accepted
  Cylindropuntia hualpaensis (Hester) Backeb. -- not accepted
  Cylindropuntia humahuacana Backeb. -- not accepted
  Cylindropuntia hystrix (Griseb.) Areces -- accepted
  Cylindropuntia imbricata (Haw.) F.M. Knuth -- accepted
  Cylindropuntia imbricata var. argentea (M.S. Anthony) Backeb. -- accepted
  Cylindropuntia imbricata var. imbricata (Haw.) F.M. Knuth -- accepted
  Cylindropuntia intermedia (Rauh & Backeb.) Rauh & Backeb. -- not accepted
  Cylindropuntia kleiniae (DC.) F.M. Knuth -- accepted
  Cylindropuntia leptocaulis (DC.) F.M. Knuth -- accepted -- tesajo cactus, tasajillo, Christmas cactus
  Cylindropuntia lindsayi (Rebman) Rebman -- accepted
  Cylindropuntia lloydii (Rose) F.M. Knuth -- not accepted
  Cylindropuntia metuenda (Pittier) Backeb. -- not accepted
  Cylindropuntia molesta (Brandegee) F.M. Knuth -- accepted
  Cylindropuntia munzii (C.B. Wolf) Backeb. -- accepted
  Cylindropuntia pallida (Rose) F.M. Knuth -- accepted
  Cylindropuntia parryi (Engelm.) F.M. Knuth -- not accepted
  Cylindropuntia prolifera (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia ramosissima (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia recondita (Griffiths) F.M. Knuth -- not accepted
  Cylindropuntia rosarica (G.E. Linds.) Backeb. -- not accepted
  Cylindropuntia rosea (DC.) Backeb. -- accepted
  Cylindropuntia sanfelipensis (Rebman) Rebman -- accepted
  Cylindropuntia santamaria (E.M. Baxter) Rebman -- accepted
  Cylindropuntia spinosior (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia teres (Cels ex F.A.C. Weber) Backeb. -- not accepted
  Cylindropuntia tesajo (Engelm. ex J.M. Coult.) F.M. Knuth -- accepted
  Cylindropuntia thurberi (Engelm.) F.M. Knuth -- accepted
  Cylindropuntia tunicata (Lehm.) F.M. Knuth -- accepted
  Cylindropuntia versicolor (Engelm. ex J.M. Coult.) F.M. Knuth -- accepted
  Cylindropuntia weingartiana (Backeb.) Backeb. -- not accepted
  Cylindropuntia whipplei (Engelm. & J.M. Bigelow) F.M. Knuth -- accepted
  Cylindropuntia wigginsii (L.D. Benson) H. Rob. -- not accepted
  Cylindropuntia wolfii (L.D. Benson) M.A. Baker -- accepted
  Cylindropuntia X deserta (Griffiths) Pinkava -- accepted
  Cylindropuntia X fosbergii (C.B. Wolf) Rebman, M.A. Baker & Pinkava -- accepted
  Cylindropuntia X kelvinensis (V.E. Grant & K.A. Grant) P.V. Heath -- accepted
  Cylindropuntia X multigeniculata (Clokey) Backeb. -- accepted
  Cylindropuntia X munzii (C.B. Wolf) Backeb. -- not accepted
  Cylindropuntia X neoarbuscula (Griffiths) Backeb. & F.M. Knuth -- accepted
  Cylindropuntia X tetracantha (Toumey) F.M. Knuth -- accepted
  Cylindropuntia X viridiflora (Britton & Rose) F.M. Knuth -- accepted
  Cylindropuntia X vivipara (Rose) F.M. Knuth -- accepted
  Deamia Britton & Rose -- not accepted
  Deamia diabolica Clover -- not accepted
  Deamia testudo (Karw. ex Zucc.) Britton & Rose -- not accepted
  Delaetia Backeb. -- not accepted
  Delaetia woutersiana Backeb. -- not accepted
  Dendrocereus Britton & Rose -- accepted
  Dendrocereus nudiflorus (Engelm. ex Sauvalle) Britton & Rose -- accepted
  Dendrocereus undulosus (DC.) Britton & Rose -- accepted
  Denmoza Britton & Rose -- accepted
  Denmoza erythrocephalus (K. Schum.) A. Berger -- not accepted
  Denmoza rhodacantha (Salm-Dyck) Britton & Rose -- accepted
  Digitostigma Velazco & Nevárez -- not accepted
  Digitostigma caput-medusae Velazco & Nevárez -- not accepted
  Discocactus Pfeiff. -- accepted
  Discocactus albispinus Buining & Brederoo -- not accepted
  Discocactus araneispinus Buining ex Brederoo -- not accepted
  Discocactus araneispinus S. Theun. -- not accepted
  Discocactus bahiensis Britton & Rose -- accepted
  Discocactus bahiensis ssp. subviridigriseus (Buining ex Brederoo) P.J. Braun & Esteves -- not accepted
  Discocactus boliviensis Backeb. -- accepted
  Discocactus boomianus Buining & Brederoo -- not accepted
  Discocactus buenekeri W.R. Abraham -- not accepted
  Discocactus cangaensis Diers & Esteves -- not accepted
  Discocactus catingicola Buining & Brederoo -- accepted
  Discocactus catingicola ssp. rapirhizua (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Discocactus catingicola var. griseus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Discocactus cephaliaciculosus Buining & Brederoo ex P.J. Braun & Esteves -- not accepted
  Discocactus cephaliaciculosus ssp. nudicephalus P.J. Braun & Esteves -- not accepted
  Discocactus crassispinus P.J. Braun & Esteves -- not accepted
  Discocactus crystallophilus Diers & Esteves -- not accepted
  Discocactus diersianus Esteves -- accepted
  Discocactus estevesii Diers -- not accepted
  Discocactus ferricola Buining & Brederoo -- accepted
  Discocactus flavispinus Buining & Brederoo -- not accepted
  Discocactus goianus Diers & Esteves -- not accepted
  Discocactus griseus Buining & Brederoo -- not accepted
  Discocactus hartmannii (K. Schum.) Britton & Rose -- accepted
  Discocactus hartmannii var. magnimammus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Discocactus hartmannii var. patulifolius (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Discocactus heptacanthus (Barb. Rodr.) Britton & Rose -- accepted
  Discocactus heptacanthus ssp. catingicola (Buining & Brederoo) N.P. Taylor & Zappi -- not accepted
  Discocactus heptacanthus ssp. magnimammus (Buining & Brederoo) N.P. Taylor & Zappi -- not accepted
  Discocactus horstii Buining & Brederoo -- accepted
  Discocactus latispinus Buining ex Brederoo -- not accepted
  Discocactus lindaianus Diers & Esteves -- not accepted
  Discocactus magnimammus Buining & Brederoo -- not accepted
  Discocactus magnimammus ssp. bonitoensis Buining & Brederoo -- not accepted
  Discocactus mamillosus Buining & Brederoo -- not accepted
  Discocactus melanochlorus Buining ex Brederoo -- not accepted
  Discocactus multicolorispinus P.J. Braun & Brederoo -- not accepted
  Discocactus nigrisaetosus Buining ex Brederoo -- not accepted
  Discocactus pachythele Buining & Brederoo -- not accepted
  Discocactus patulifolius Buining & Brederoo -- not accepted
  Discocactus piauiensis P.J. Braun & Esteves -- not accepted
  Discocactus placentiformis (Lehm.) K. Schum. -- accepted
  Discocactus promentigibbus Diers & Esteves -- not accepted
  Discocactus pseudoinsignis N.P. Taylor & Zappi -- accepted
  Discocactus pseudolatispinus Diers & Esteves -- not accepted
  Discocactus pugionacanthus Buining ex Brederoo -- not accepted
  Discocactus rapirhizus Buining & Brederoo -- not accepted
  Discocactus semicampaniflorus Buining & Brederoo -- not accepted
  Discocactus silicicola Buining & Brederoo -- not accepted
  Discocactus silvaticus Buining ex Brederoo -- not accepted
  Discocactus spinosior Buining ex Brederoo -- not accepted
  Discocactus squamibaccatus Buining ex Brederoo -- not accepted
  Discocactus subviridigriseus Buining ex Brederoo -- not accepted
  Discocactus tricornis Monv. ex Pfeiff. -- not accepted
  Discocactus zehntneri Britton & Rose -- accepted
  Discocactus zehntneri ssp. boomianus (Buining, Brederoo ex Buining) N.P. Taylor & Zappi -- accepted
  Discocactus zehntneri ssp. zehntneri Britton & Rose -- accepted
  Disocactus Lindl. -- accepted
  Disocactus ackermannii (Haw.) Barthlott -- accepted
  Disocactus ackermannii ssp. ackermannii (Haw.) Barthlott -- accepted
  Disocactus ackermannii ssp. conzattianus (T. MacDoug.) Ralf Bauer -- accepted
  Disocactus acuminatus (Cufod.) Kimnach -- not accepted
  Disocactus alatus (Sw.) Kimnach -- not accepted
  Disocactus amazonicus (K. Schum.) D.R. Hunt -- not accepted
  Disocactus aurantiacus (Kimnach) Barthlott -- not accepted
  Disocactus biformis (Lindl.) Lindl. -- accepted
  Disocactus cinnabarinus (Weing.) Barthlott -- not accepted
  Disocactus eichlamii (Weing.) Britton & Rose -- accepted
  Disocactus flagelliformis (L.) Barthlott -- accepted
  Disocactus himantocladus (Rol.-Goss.) Kimnach -- not accepted
  Disocactus horichii Kimnach -- not accepted
  Disocactus kimnachii G.D. Rowley -- accepted
  Disocactus lankesteri Kimnach -- not accepted
  Disocactus macdougallii (Alexander) Barthlott -- accepted
  Disocactus macranthus (Alexander) Kimnach & Hutchison -- accepted
  Disocactus martianus (Zucc.) Barthlott -- accepted
  Disocactus nelsonii (Britton & Rose) Linding. -- accepted
  Disocactus nelsonii ssp. hondurensis (Kimnach) Doweld -- accepted
  Disocactus nelsonii ssp. nelsonii (Britton & Rose) Linding. -- accepted
  Disocactus phyllanthoides (DC.) Barthlott -- accepted
  Disocactus quezaltecus (Standl. & Steyerm.) Kimnach -- accepted
  Disocactus ramulosus (Salm-Dyck) Kimnach -- not accepted
  Disocactus schrankii (Seitz) Barthlott -- not accepted
  Disocactus speciosus (Cav.) Barthlott -- accepted
  Disocactus speciosus ssp. aurantiacus (Kimnach) Ralf Bauer -- accepted
  Disocactus speciosus ssp. blomianus (Kimnach) Ralf Bauer -- accepted
  Disocactus speciosus ssp. cinnabarinus (Weing.) Ralf Bauer -- accepted
  Disocactus speciosus ssp. speciosus (Cav.) Barthlott -- accepted
  Dolichothele (K. Schum.) Britton & Rose -- not accepted
  Dolichothele albescens (Tiegel) Backeb. -- not accepted
  Dolichothele balsasoides (R.T. Craig) Backeb. -- not accepted
  Dolichothele baumii (Boed.) Backeb. -- not accepted
  Dolichothele beneckei (Ehrenb.) Backeb. -- not accepted
  Dolichothele longimamma (DC.) Britton & Rose -- not accepted
  Dolichothele nelsonii (Britton & Rose) Backeb. -- not accepted
  Dolichothele sphaerica (A. Dietr.) Britton & Rose -- not accepted
  Dolichothele surculosa (Boed.) Backeb. -- not accepted
  Dolichothele uberiformis (Zucc. ex Pfeiff.) Britton & Rose -- not accepted
  Dolichothele zephyranthoides (Scheidw.) Backeb. -- not accepted
  Eccremocactus Britton & Rose -- not accepted
  Eccremocactus bradei Britton & Rose -- not accepted
  Eccremocactus imitans (Kimnach & Hutchison) Kimnach -- not accepted
  Eccremocactus rosei Kimnach -- not accepted
  Echinocactus Link & Otto -- accepted -- barrel cactus
  Echinocactus acanthodes Lem. -- not accepted
  Echinocactus aspillagae Söhrens -- not accepted
  Echinocactus asterias Zucc. -- not accepted
  Echinocactus bicolor Galeotti ex Pfeiff. -- not accepted
  Echinocactus bicolor var. schottii Engelm. -- not accepted
  Echinocactus brevihamatus Engelm. -- not accepted
  Echinocactus bulbocalyx Werderm. -- not accepted
  Echinocactus chilensis Hildm. ex K. Schum. -- not accepted
  Echinocactus cinnabarinus Hook. -- not accepted
  Echinocactus conoideus (DC.) Poselg. -- not accepted
  Echinocactus coquimbanus Karw. ex Rümpler -- not accepted
  Echinocactus erectocentrus J.M. Coult. -- not accepted
  Echinocactus famatimensis Speg. -- not accepted
  Echinocactus fiedlerianus K. Schum. -- not accepted
  Echinocactus flavidispinus (Backeb.) D. Weniger -- not accepted
  Echinocactus formosus Pfeiff. -- not accepted
  Echinocactus glaucus Karw. ex Pfeiff. -- not accepted
  Echinocactus glaucus K. Schum. -- not accepted
  Echinocactus grandis Rose -- not accepted
  Echinocactus grusonii Hildm. -- accepted
  Echinocactus haematanthus Speg. -- not accepted
  Echinocactus hamatacanthus Muehlenpf. -- not accepted
  Echinocactus hartmannii K. Schum. -- not accepted
  Echinocactus horizonthalonius Lem. -- accepted -- Biznaga-tonelmancamula, devilshead, silverbell cactus, Turk's head cactus
  Echinocactus horizonthalonius var. moelleri F. Haage -- not accepted
  Echinocactus humilis Phil. -- not accepted
  Echinocactus intertextus Engelm. -- not accepted
  Echinocactus intertextus var. dasyacanthus Engelm. -- not accepted
  Echinocactus johnsonii Parry ex Engelm. -- not accepted
  Echinocactus johnsonii var. lutescens Parish -- not accepted
  Echinocactus lecontei Engelm. -- not accepted
  Echinocactus mariposensis (Hester) D. Weniger -- not accepted
  Echinocactus myriostigma ssp. coahuilensis H. Moeller -- not accepted
  Echinocactus palmeri Rose -- not accepted
  Echinocactus papyracanthus (Engelm.) Engelm. -- not accepted
  Echinocactus parryi Engelm. -- accepted
  Echinocactus peeblesianus (Croizat) L.D. Benson -- not accepted
  Echinocactus platyacanthus Link & Otto -- accepted
  Echinocactus polyancistrus Engelm. & J.M. Bigelow -- not accepted
  Echinocactus polycephalus Engelm. & J.M. Bigelow -- accepted -- Biznaga-tonel amacollada, cottontop cactus, cottontop barrel cactus
  Echinocactus polycephalus ssp. polycephalus Engelm. & J.M. Bigelow -- accepted
  Echinocactus polycephalus ssp. xeranthemoides (J.M. Coult.) N.P. Taylor -- accepted
  Echinocactus polycephalus var. polycephalus Engelm. & J.M. Bigelow -- not accepted -- cottontop cactus
  Echinocactus poselgerianus A. Dietr. -- not accepted
  Echinocactus pubispinus Engelm. -- not accepted
  Echinocactus rhodacanthus Salm-Dyck -- not accepted
  Echinocactus ritteri Boed. -- not accepted
  Echinocactus roseanus Boed. -- not accepted
  Echinocactus salinensis Poselg. -- not accepted
  Echinocactus scheeri Salm-Dyck -- not accepted
  Echinocactus schmiedickeanus Boed. -- not accepted
  Echinocactus senilis Phil. -- not accepted
  Echinocactus setispinus Engelm. -- not accepted
  Echinocactus setispinus var. hamatus (Muehlenpf.) Engelm. -- not accepted
  Echinocactus sileri Engelm. ex J.M. Coult. -- not accepted
  Echinocactus simpsonii Engelm. -- not accepted
  Echinocactus simpsonii var. robustior J.M. Coult. -- not accepted
  Echinocactus sinuatus A. Dietr. -- not accepted
  Echinocactus spiniflorus K. Schum. -- not accepted
  Echinocactus subglacus Rydb. -- not accepted
  Echinocactus taltalensis Werderm. -- not accepted
  Echinocactus texensis Hopffer -- accepted -- Biznaga-tonel manca caballo, horse crippler, devil's pincushion
  Echinocactus thionanthus Speg. -- not accepted
  Echinocactus uncinatus Galeotti ex Pfeiff. -- not accepted
  Echinocactus unguispinus Engelm. -- not accepted
  Echinocactus viridescens Torr. & A. Gray -- not accepted
  Echinocactus warnockii (L.D. Benson) D. Weniger -- not accepted
  Echinocactus whipplei Engelm. & J.M. Bigelow -- not accepted
  Echinocactus whipplei var. glaucus (K. Schum.) J.A. Purpus -- not accepted
  Echinocactus whipplei var. intermedius (Peebles) L.D. Benson -- not accepted
  Echinocactus whipplei var. spinosior Engelm. -- not accepted
  Echinocactus wislizeni Engelm. -- not accepted
  Echinocactus xeranthemoides Engelm. ex J.M. Coult. -- not accepted
  Echinocactus xeranthemoides (J.M. Coult.) Engelm. ex Rydb. -- not accepted
  Echinocereus Engelm. -- accepted -- hedgehog cactus
  Echinocereus abbeae S.H. Parsons -- not accepted
  Echinocereus acifer (Otto ex Salm-Dyck) Lem. -- accepted
  Echinocereus acifer ssp. acifer (Otto ex Salm-Dyck) Lem. -- accepted
  Echinocereus acifer ssp. huitcholensis (F.A.C. Weber) Mich. Lange -- accepted
  Echinocereus adustus Engelm. -- accepted
  Echinocereus adustus ssp. adustus Engelm. -- accepted
  Echinocereus adustus ssp. bonatzii (R.C. Römer) N.P. Taylor -- not accepted
  Echinocereus adustus ssp. roemerianus W. Rischer -- not accepted
  Echinocereus adustus ssp. schwarzii (A.B. Lau) N.P. Taylor -- accepted
  Echinocereus albatus Backeb. -- not accepted
  Echinocereus albispinus Lahman -- not accepted
  Echinocereus amoenus (A. Dietr.) K. Schum. -- not accepted
  Echinocereus angusticeps Clover -- not accepted
  Echinocereus apachensis W. Blum & Rutow -- accepted
  Echinocereus arizonicus Rose ex Orcutt -- accepted
  Echinocereus baileyi Rose -- not accepted
  Echinocereus baileyi var. albispinus (Lahman) Backeb. -- not accepted
  Echinocereus barthelowanus Britton & Rose -- accepted
  Echinocereus berlandieri (Engelm.) J.N. Haage -- accepted -- Órgano-pequeño de Berlandier, Berlandier's hedgehog cactus
  Echinocereus berlandieri var. angusticeps (Clover) L.D. Benson -- not accepted
  Echinocereus berlandieri var. blankii (Poselg.) P. Fourn. -- not accepted
  Echinocereus berlandieri var. papillosus (Linke ex Rümpler) L.D. Benson -- not accepted
  Echinocereus blankii (Poselg.) F. Palmer -- not accepted
  Echinocereus blankii var. angusticeps (Clover) L.D. Benson -- not accepted
  Echinocereus bonatzii R.C. Römer -- not accepted
  Echinocereus bonkerae Thornber & Bonker -- accepted
  Echinocereus boyce-thompsonii Orcutt -- not accepted
  Echinocereus brandegeei (J.M. Coult.) K. Schum. -- accepted
  Echinocereus bristolii W.T. Marshall -- accepted
  Echinocereus bristolii var. pseudopectinatus N.P. Taylor -- not accepted
  Echinocereus caespitosus (Engelm.) Engelm. -- not accepted
  Echinocereus caespitosus var. minor (Engelm.) D. Weniger -- not accepted
  Echinocereus caespitosus var. perbellus (Britton & Rose) D. Weniger -- not accepted
  Echinocereus caespitosus var. purpureus (Lahman) D. Weniger -- not accepted
  Echinocereus canyonensis Clover & Jotter -- not accepted
  Echinocereus chisoensis W.T. Marshall -- not accepted -- Órgano-pequeño chiso, Chisos Mountain hedgehog cactus, chisos lace cactus
  Echinocereus chisosensis W.T. Marshall -- accepted
  Echinocereus chisosensis ssp. chisosensis W.T. Marshall -- accepted -- Chisos Mountain hedgehog cactus
  Echinocereus chisosensis ssp. fobeanus (Oehme) N.P. Taylor -- accepted
  Echinocereus chloranthus (Engelm.) J.N. Haage -- not accepted -- Órgano-pequeño de flor verde, brownspine hedgehog cactus
  Echinocereus chloranthus var. neocapillus D. Weniger -- not accepted -- brownspine hedgehog cactus, golden-spined hedgehog cactus
  Echinocereus chloranthus var. russanthus (D. Weniger) Lamb. ex G.D. Rowley -- not accepted -- brownspine hedgehog cactus
  Echinocereus chlorophthalmus (Hook.) Britton & Rose -- not accepted
  Echinocereus cinerascens (DC.) H.P. Kelsey & Dayton -- accepted
  Echinocereus cinerascens ssp. cinerascens (DC.) H.P. Kelsey & Dayton -- accepted
  Echinocereus cinerascens ssp. septentrionalis (N.P. Taylor) N.P. Taylor -- accepted
  Echinocereus cinerascens ssp. tulensis (Bravo) N.P. Taylor -- accepted
  Echinocereus cinerascens var. ehrenbergii (Pfeiff.) Bravo -- not accepted
  Echinocereus coccineus Engelm. -- accepted -- Órgano-pequeño de espinas escarlatas, scarlet hedgehog cactus
  Echinocereus coccineus ssp. coccineus Engelm. -- accepted
  Echinocereus coccineus ssp. mojavensis (Engelm. & J.M. Bigelow) N.P. Taylor -- not accepted
  Echinocereus coccineus ssp. paucispinus (Engelm.) W. Blum, Mich. Lange & Rutow -- accepted
  Echinocereus coccineus var. conoideus (Engelm.) D. Weniger -- not accepted
  Echinocereus coccineus var. inermis (K. Schum.) J.A. Purpus -- not accepted
  Echinocereus coccineus var. rosei (Wooton & Standl.) A.D. Zimmerman -- not accepted
  Echinocereus ctenoides (Engelm.) Rümpler -- not accepted
  Echinocereus dasyacanthus Engelm. -- accepted -- Órgano-pequeño arcoiris de Texas, spiny hedgehog cactus
  Echinocereus dasyacanthus var. hildmannii (Arendt) D. Weniger -- not accepted
  Echinocereus davisii Houghton -- accepted
  Echinocereus decumbens Clover & Jotter -- not accepted
  Echinocereus delaetii Gürke -- not accepted
  Echinocereus dubius (Engelm.) Engelm. ex Rümpler -- not accepted
  Echinocereus durangensis Poselg. ex Rümpler -- not accepted
  Echinocereus engelmannii (Parry ex Engelm.) Lem. -- accepted -- Órgano-pequeño fresa, Engelmann's hedgehog cactus, strawberry cactus
  Echinocereus engelmannii var. decumbens (Clover & Jotter) L.D. Benson -- not accepted
  Echinocereus engelmannii var. nicholii L.D. Benson -- not accepted
  Echinocereus enneacanthus Engelm. -- accepted -- Órgano-pequeño alicoche real, pitaya, smallspine pitaya
  Echinocereus enneacanthus ssp. brevispinus (W.O. Moore) N.P. Taylor -- accepted
  Echinocereus enneacanthus ssp. enneacanthus Engelm. -- accepted
  Echinocereus enneacanthus var. carnosus (Rümpler) Quehl -- not accepted
  Echinocereus enneacanthus var. dubius (Engelm.) L.D. Benson -- not accepted
  Echinocereus enneacanthus var. stramineus (Engelm.) L.D. Benson -- not accepted
  Echinocereus fasciculatus (Engelm. ex B.D. Jacks.) L.D. Benson -- accepted -- Órgano-pequeño de manojos
  Echinocereus fasciculatus ssp. bonkerae (Thornber & Bonker) N.P. Taylor -- not accepted
  Echinocereus fasciculatus ssp. boyce-thompsonii (Orcutt) N.P. Taylor -- not accepted
  Echinocereus fasciculatus ssp. fasciculatus (Engelm. ex B.D. Jacks.) L.D. Benson -- not accepted
  Echinocereus fasciculatus var. bonkerae (Thornber & Bonker) L.D. Benson -- not accepted
  Echinocereus fasciculatus var. boyce-thompsonii (Orcutt) L.D. Benson -- not accepted
  Echinocereus fendleri (Engelm.) Sencke ex J.N. Haage -- accepted
  Echinocereus fendleri ssp. fendleri (Engelm.) Sencke ex J.N. Haage -- accepted
  Echinocereus fendleri ssp. rectispinus (Peebles) N.P. Taylor -- accepted
  Echinocereus fendleri var. robustus (Peebles) L.D. Benson -- not accepted
  Echinocereus ferreirianus H.E. Gates -- accepted
  Echinocereus ferreirianus ssp. ferreirianus H.E. Gates -- accepted
  Echinocereus ferreirianus ssp. lindsayi (J. Meyrán) N.P. Taylor -- accepted
  Echinocereus fitchii Britton & Rose -- not accepted
  Echinocereus floresii Backeb. -- not accepted
  Echinocereus fobeanus Oehme -- not accepted
  Echinocereus freudenbergii G. Frank -- accepted
  Echinocereus gentryi Clover -- not accepted
  Echinocereus glycimorphus C.F. Först. ex Rümpler -- not accepted
  Echinocereus grandis Britton & Rose -- accepted
  Echinocereus hancockii E.Y. Dawson -- not accepted
  Echinocereus hempelii Fobe -- not accepted
  Echinocereus hexaedrus (Engelm. & J.M. Bigelow) Rümpler -- not accepted
  Echinocereus hildmannii Arendt -- not accepted
  Echinocereus huitcholensis (F.A.C. Weber) Gürke -- not accepted
  Echinocereus klapperi W. Blum -- accepted
  Echinocereus klapperi ssp. bacanorensis W. Rischer -- not accepted
  Echinocereus knippelianus Liebm. -- accepted
  Echinocereus knippelianus var. kruegeri Glass & R.A. Foster -- not accepted
  Echinocereus knippelianus var. reyesii A.B. Lau -- not accepted
  Echinocereus kroenleinii (Mich. Lange) W. Blum & Waldeis -- not accepted
  Echinocereus kuenzleri Castetter, P. Pierce & K.H. Schwer. -- not accepted
  Echinocereus kunzei Gürke -- not accepted
  Echinocereus laui G. Frank -- accepted
  Echinocereus ledingii Peebles -- accepted
  Echinocereus leonensis Mathsson -- not accepted
  Echinocereus leptacanthus K. Schum. -- not accepted
  Echinocereus leucanthus N.P. Taylor -- accepted
  Echinocereus lindsayi J. Meyrán -- not accepted
  Echinocereus llanuraensis (Rutow) W. Blum & D. Felix -- not accepted
  Echinocereus longisetus (Engelm.) Rümpler -- accepted
  Echinocereus longisetus ssp. delaetii (Gürke) N.P. Taylor -- accepted
  Echinocereus longisetus ssp. longisetus (Engelm.) Rümpler -- accepted
  Echinocereus luteus Britton & Rose -- not accepted
  Echinocereus mamillatus (Engelm. ex J.M. Coult.) Britton & Rose -- not accepted
  Echinocereus mapimiensis E.F. Anderson, W.C. Hodgs. & P. Quirk -- accepted
  Echinocereus maritimus (M.E. Jones) K. Schum. -- accepted
  Echinocereus maritimus var. hancockii (E.Y. Dawson) N.P. Taylor -- not accepted
  Echinocereus matudae Bravo -- not accepted
  Echinocereus melanocentrus M. Lowry -- not accepted
  Echinocereus merkeri Hildm. -- not accepted
  Echinocereus metornii G. Frank -- accepted
  Echinocereus mojavensis (Engelm. & J.M. Bigelow) Rümpler -- not accepted
  Echinocereus mombergerianus G. Frank -- accepted
  Echinocereus morricalii Ríha -- not accepted
  Echinocereus munzii (Parish) L.D. Benson -- not accepted
  Echinocereus neomexicanus Standl. -- not accepted
  Echinocereus nicholii (L.D. Benson) B.D. Parfitt -- accepted -- Nichol's hedgehog cactus
  Echinocereus nicholii ssp. llanuraensis Rutow -- not accepted
  Echinocereus nivosus Glass & R.A. Foster -- accepted
  Echinocereus ochoterenae J.G. Ortega -- not accepted
  Echinocereus octacanthus (Muehlenpf.) Britton & Rose -- not accepted
  Echinocereus ortegae Rose -- accepted
  Echinocereus ortegae ssp. koehresianus (G. Frank) W. Rischer & G. Frank -- accepted
  Echinocereus ortegae ssp. ortegae Rose -- accepted
  Echinocereus pacificus (Engelm. ex Orcutt) Britton & Rose -- accepted
  Echinocereus palmeri Britton & Rose -- accepted
  Echinocereus palmeri ssp. mazapil H.M. Hern. & Gómez-Hin. -- accepted
  Echinocereus palmeri ssp. palmeri Britton & Rose -- accepted
  Echinocereus pamanesiorum A.B. Lau -- accepted
  Echinocereus pamanesiorum ssp. bonatzii (R.C. Römer) R.C. Römer -- accepted
  Echinocereus pamanesiorum ssp. pamanesiorum A.B. Lau -- accepted
  Echinocereus papillosus Linke ex Rümpler -- accepted -- Órgano-pequeño cardoncillo, Allicoche hedgehog cactus
  Echinocereus parkeri N.P. Taylor -- accepted
  Echinocereus parkeri ssp. arteagensis W. Blum & Mich. Lange -- accepted
  Echinocereus parkeri ssp. mazapilensis W. Blum & Mich. Lange -- accepted
  Echinocereus parkeri ssp. parkeri N.P. Taylor -- accepted
  Echinocereus pectinatus (Scheidw.) Engelm. -- accepted -- Órgano-pequeño peine, rainbow cactus
  Echinocereus pectinatus ssp. ctenoides (Engelm.) G. Frank -- accepted
  Echinocereus pectinatus ssp. pectinatus (Scheidw.) Engelm. -- accepted
  Echinocereus pectinatus ssp. wenigeri (L.D. Benson) W. Blum & Rutow -- accepted
  Echinocereus pectinatus var. dasyacanthus (Engelm.) N.P. Taylor -- not accepted -- rainbow cactus
  Echinocereus pectinatus var. minor (Engelm.) L.D. Benson -- not accepted
  Echinocereus pectinatus var. neomexicanus (J.M. Coult.) L.D. Benson -- not accepted
  Echinocereus pectinatus var. rigidissimus (Engelm.) Rümpler -- not accepted
  Echinocereus pensilis (K. Brandegee) J.A. Purpus -- accepted
  Echinocereus pentalophus (DC.) Lem. -- accepted -- Órgano-pequeño alicoche falso, ladyfinger cactus
  Echinocereus pentalophus ssp. leonensis (Mathsson) N.P. Taylor -- accepted
  Echinocereus pentalophus ssp. pentalophus (DC.) Lem. -- accepted
  Echinocereus pentalophus ssp. procumbens (Engelm.) W. Blum & Mich. Lange -- accepted
  Echinocereus perbellus Britton & Rose -- not accepted
  Echinocereus phoeniceus (Engelm.) Rümpler -- not accepted
  Echinocereus phoeniceus var. inermis K. Schum. -- not accepted
  Echinocereus phoeniceus var. phoeniceus (Engelm.) Rümpler -- not accepted
  Echinocereus polyacanthus Engelm. -- accepted -- Órgano-pequeño enmarañado, Mojave mound cactus
  Echinocereus polyacanthus ssp. acifer (Otto ex Salm-Dyck) N.P. Taylor -- not accepted
  Echinocereus polyacanthus ssp. huitcholensis (F.A.C. Weber) N.P. Taylor -- not accepted
  Echinocereus polyacanthus ssp. mombergerianus (G. Frank) Breckw. -- not accepted
  Echinocereus polyacanthus ssp. pacificus (Engelm. ex Orcutt) Breckw. -- not accepted
  Echinocereus polyacanthus var. huitcholensis (F.A.C. Weber) N.P. Taylor -- not accepted
  Echinocereus polyacanthus var. neomexicanus (Standl.) L.D. Benson -- not accepted
  Echinocereus polyacanthus var. pacificus (Engelm. ex Orcutt) N.P. Taylor -- not accepted
  Echinocereus polyacanthus var. rosei (Wooton & Standl.) D. Weniger -- not accepted
  Echinocereus poselgeri Lem. -- accepted -- Órgano-pequeño sacasil, dahlia hedgehog cactus
  Echinocereus poselgeri ssp. kroenleinii Mich. Lange -- not accepted
  Echinocereus primolanatus N.P. Taylor -- accepted
  Echinocereus pseudopectinatus (N.P. Taylor) N.P. Taylor -- accepted -- devilthorn
  Echinocereus pulchellus (Mart.) Seitz -- accepted
  Echinocereus pulchellus ssp. acanthosetus (S. Arias & U. Guzmán) W. Blum -- accepted
  Echinocereus pulchellus ssp. pulchellus (Mart.) Seitz -- accepted
  Echinocereus pulchellus ssp. sharpii (N.P. Taylor) N.P. Taylor -- accepted
  Echinocereus pulchellus ssp. weinbergii (Weing.) N.P. Taylor -- accepted
  Echinocereus purpureus Lahman -- not accepted
  Echinocereus rayonesensis N.P. Taylor -- accepted
  Echinocereus rectispinus Peebles -- not accepted
  Echinocereus rectispinus var. robustus Peebles -- not accepted
  Echinocereus reichenbachii (Terscheck ex Walp.) J.N. Haage -- accepted -- Órgano-pequeño de colores, lace hedgehog cactus
  Echinocereus reichenbachii ssp. armatus (Polselg.) N.P. Taylor -- not accepted
  Echinocereus reichenbachii ssp. baileyi (Rose) N.P. Taylor -- not accepted
  Echinocereus reichenbachii ssp. burrensis G. Frank, Metorn & E. Scherer -- not accepted
  Echinocereus reichenbachii ssp. fitchii (Britton & Rose) N.P. Taylor -- not accepted
  Echinocereus reichenbachii ssp. perbellus (Britton & Rose) N.P. Taylor -- not accepted
  Echinocereus reichenbachii ssp. reichenbachii (Terscheck ex Walp.) Britton & Rose -- not accepted
  Echinocereus reichenbachii var. albertii L.D. Benson -- not accepted -- black lace cactus
  Echinocereus reichenbachii var. albispinus (Lahman) L.D. Benson -- not accepted
  Echinocereus reichenbachii var. chisoensis (W.T. Marshall) L.D. Benson -- not accepted
  Echinocereus reichenbachii var. chisosensis (W.T. Marshall) L.D. Benson -- not accepted
  Echinocereus reichenbachii var. robustus (Peebles) L.D. Benson -- not accepted
  Echinocereus rigidissimus (Engelm.) J.N. Haage -- accepted -- rainbow hedgehog cactus
  Echinocereus rigidissimus ssp. rigidissimus (Engelm.) J.N. Haage -- accepted
  Echinocereus rigidissimus ssp. rubispinus (G. Frank) N.P. Taylor -- accepted
  Echinocereus roemeri (Muehlenpf.) Rydb. -- not accepted
  Echinocereus roetteri var. lloydii (Britton & Rose) Backeb. -- not accepted
  Echinocereus rosei Wooton & Standl. -- not accepted
  Echinocereus russanthus D. Weniger -- accepted -- Órgano-pequeño chiso, brownspine hedgehog cactus, rusty hedgehog cactus
  Echinocereus salm-dyckianus Scheer -- accepted
  Echinocereus salmianus Rümpler -- not accepted
  Echinocereus sanpedroensis Raudonat & W. Rischer -- not accepted
  Echinocereus santaritensis W. Blum & Rutow -- accepted
  Echinocereus sarissophorus Britton & Rose -- not accepted
  Echinocereus scheeri (Salm-Dyck) Scheer -- accepted
  Echinocereus scheeri ssp. gentryi (Clover) N.P. Taylor -- accepted
  Echinocereus scheeri ssp. scheeri (Salm-Dyck) Scheer -- accepted
  Echinocereus schereri G. Frank -- accepted
  Echinocereus schmollii (Weing.) N.P. Taylor -- accepted
  Echinocereus schwarzii A.B. Lau -- not accepted
  Echinocereus sciurus (K. Brandegee) Dams -- accepted
  Echinocereus sciurus ssp. floresii (Backeb.) N.P. Taylor -- accepted
  Echinocereus sciurus ssp. sciurus (K. Brandegee) Dams -- accepted
  Echinocereus scopulorum Britton & Rose -- accepted
  Echinocereus spinigemmatus A.B. Lau -- accepted
  Echinocereus steereae Clover -- not accepted
  Echinocereus stoloniferus W.T. Marshall -- accepted
  Echinocereus stoloniferus ssp. stoloniferus W.T. Marshall -- accepted
  Echinocereus stoloniferus ssp. tayopensis (W.T. Marshall) N.P. Taylor -- accepted
  Echinocereus stramineus (Engelm.) F. Seitz -- accepted -- Órgano-pequeño sanjuanero, strawberry hedgehog cactus
  Echinocereus stramineus ssp. occidentalis (N.P. Taylor) N.P. Taylor -- accepted
  Echinocereus stramineus ssp. stramineus (Engelm.) F. Seitz -- accepted
  Echinocereus subinermis Salm-Dyck ex Scheer -- accepted
  Echinocereus subinermis ssp. ochoterenae (J.G. Ortega) N.P. Taylor -- accepted
  Echinocereus subinermis ssp. subinermis Salm-Dyck ex Scheer -- accepted
  Echinocereus tamaulipensis ssp. waldeisii (Haugg) Mich. Lange -- not accepted
  Echinocereus tayopensis W.T. Marshall -- not accepted
  Echinocereus topiensis W. Rischer & Trocha -- not accepted
  Echinocereus triglochidiatus Engelm. -- accepted -- Órgano-pequeño copa de vino, kingcup cactus, claretcup hedgehog, Mojave mound cactus
  Echinocereus triglochidiatus ssp. mojavensis (Engelm. & J.M. Bigelow) W. Blum & Mich. Lange -- not accepted
  Echinocereus triglochidiatus ssp. triglochidiatus Engelm. -- not accepted
  Echinocereus triglochidiatus var. arizonicus (Rose ex Orcutt) L.D. Benson -- not accepted -- Arizona hedgehog cactus
  Echinocereus triglochidiatus var. gonacanthus (Engelm. & J.M. Bigelow) Boissev. -- not accepted
  Echinocereus triglochidiatus var. hexaedrus (Engelm.) Boissev. & C. Davidson -- not accepted
  Echinocereus triglochidiatus var. inermis (K. Schum.) Arp -- not accepted -- spineless hedgehog cactus
  Echinocereus triglochidiatus var. melanacanthus (Engelm. ex A. Gray) L.D. Benson -- not accepted
  Echinocereus triglochidiatus var. neomexicanus (Standl.) W.T. Marshall -- not accepted
  Echinocereus triglochidiatus var. octacanthus (Muehlenpf.) W.T. Marshall -- not accepted
  Echinocereus triglochidiatus var. paucispinus (Engelm.) W.T. Marshall -- not accepted
  Echinocereus triglochidiatus var. polyacanthus (Engelm.) L.D. Benson -- not accepted
  Echinocereus tulensis Bravo -- not accepted
  Echinocereus viereckii Werderm. -- accepted
  Echinocereus viereckii ssp. morricalii (Ríha) N.P. Taylor -- accepted
  Echinocereus viereckii ssp. viereckii Werderm. -- accepted
  Echinocereus viridiflorus Engelm. -- accepted -- nylon hedgehog cactus, green pitaya
  Echinocereus viridiflorus ssp. chloranthus (Engelm.) N.P. Taylor -- accepted
  Echinocereus viridiflorus ssp. davisii (Houghton) N.P. Taylor -- not accepted
  Echinocereus viridiflorus ssp. viridiflorus Engelm. -- accepted
  Echinocereus viridiflorus var. davisii (Houghton) W.T. Marshall -- not accepted -- Davis' hedgehog cactus, Davis' green pitaya
  Echinocereus viridiflorus var. standleyi (Britton & Rose) Orcutt ex D. Weniger -- not accepted
  Echinocereus waldeisii Haugg -- not accepted
  Echinocereus websterianus G.E. Linds. -- accepted
  Echinocereus weinbergii Weing. -- not accepted
  Echinocereus X lloydii Britton & Rose -- not accepted -- Lloyd's hedgehog cactus
  Echinocereus X roetteri (Engelm.) Rümpler -- accepted
  Echinofossulocactus Lawr. -- not accepted
  Echinofossulocactus albatus (A. Dietr.) Britton & Rose -- not accepted
  Echinofossulocactus arrigens (Link) Britton & Rose -- not accepted
  Echinofossulocactus caespitosus Backeb. -- not accepted
  Echinofossulocactus confusus Britton & Rose -- not accepted
  Echinofossulocactus coptonogonus (Lem.) Lawr. -- not accepted
  Echinofossulocactus crispatus (DC.) Lawr. -- not accepted
  Echinofossulocactus densispinus Tiegel ex Pechanek -- not accepted
  Echinofossulocactus dichroacanthus (Mart.) Britton & Rose -- not accepted
  Echinofossulocactus erectocentrus Backeb. -- not accepted
  Echinofossulocactus flexispinus (Salm-Dyck) Bravo -- not accepted
  Echinofossulocactus guerraianus Backeb. -- not accepted
  Echinofossulocactus heteracanthus (Muehlenpf.) Britton & Rose -- not accepted
  Echinofossulocactus kellerianus Krainz -- not accepted
  Echinofossulocactus lamellosus (A. Dietr.) Britton & Rose -- not accepted
  Echinofossulocactus lancifer (A. Dietr.) Britton & Rose -- not accepted
  Echinofossulocactus lexarzai (Bravo) Croizat -- not accepted
  Echinofossulocactus lloydii Britton & Rose -- not accepted
  Echinofossulocactus multiareolatus Bravo -- not accepted
  Echinofossulocactus obvallatus (DC.) Lawr. -- not accepted
  Echinofossulocactus pentacanthus (Lem.) Britton & Rose -- not accepted
  Echinofossulocactus phyllacanthus (A. Dietr. & Otto) Lawr. -- not accepted
  Echinofossulocactus sulphureus (A. Dietr.) Y. Itô -- not accepted
  Echinofossulocactus tricuspidatus (Scheidw.) Britton & Rose -- not accepted
  Echinofossulocactus violaciflorus (Quehl) Britton & Rose -- not accepted
  Echinofossulocactus zacatecasensis Britton & Rose -- not accepted
  Echinomastus Britton & Rose -- not accepted
  Echinomastus acunensis W.T. Marshall -- not accepted
  Echinomastus durangensis (Runge) Britton & Rose -- not accepted
  Echinomastus erectocentrus (J.M. Coult.) Britton & Rose -- not accepted
  Echinomastus erectocentrus ssp. acunensis (W.T. Marshall) U. Guzmán -- not accepted
  Echinomastus erectocentrus var. acunensis (W.T. Marshall) Bravo -- not accepted -- acuna cactus
  Echinomastus erectocentrus var. erectocentrus (J.M. Coult.) Britton & Rose -- not accepted
  Echinomastus gautii (L.D. Benson) Mosco & Zanov. -- not accepted
  Echinomastus intertextus (Engelm.) Britton & Rose -- not accepted
  Echinomastus intertextus var. dasyacanthus (Engelm.) Backeb. -- not accepted
  Echinomastus intertextus var. intertextus (Engelm.) Britton & Rose -- not accepted
  Echinomastus johnsonii (Parry ex Engelm.) E.M. Baxter -- not accepted
  Echinomastus laui G. Frank & Zecher -- not accepted
  Echinomastus mapimiensis Backeb. -- not accepted
  Echinomastus mariposensis Hester -- not accepted -- Lloyd's Mariposa cactus
  Echinomastus unguispinus (Engelm.) Britton & Rose -- not accepted
  Echinomastus unguispinus var. laui (Gerhart Frank & Zecher) Glass & R.A. Foster -- not accepted
  Echinomastus warnockii (L.D. Benson) Glass & R.A. Foster -- not accepted
  Echinopsis Zucc. -- accepted
  Echinopsis albispinosa K. Schum. -- accepted
  Echinopsis ancistrophora Speg. -- accepted
  Echinopsis ancistrophora ssp. arachnacantha (Buining & F. Ritter) Rausch -- not accepted
  Echinopsis ancistrophora ssp. cardenasiana (Rausch) Rausch -- not accepted
  Echinopsis ancistrophora ssp. pojoensis (Rausch) Rausch -- not accepted
  Echinopsis ancistrophora var. sulphurea (R. Vásquez) Rausch -- not accepted
  Echinopsis angelesiae (R. Kiesling) G.D. Rowley -- accepted
  Echinopsis antezanae (Cárdenas) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis arachnacantha (Buining & F. Ritter) H. Friedrich -- accepted
  Echinopsis arachnacantha ssp. arachnacantha (Buining & F. Ritter) H. Friedrich -- accepted
  Echinopsis arachnacantha ssp. densiseta (Rausch) Lowry -- accepted
  Echinopsis arachnacantha ssp. sulphurea (R. Vásquez) M. Lowry -- accepted
  Echinopsis arachnacantha ssp. torrecillasensis (Cárdenas) Friedrich -- accepted
  Echinopsis arachnacantha var. sulphurea (R. Vásquez) G.D. Rowley -- not accepted
  Echinopsis arboricola (Kimnach) Mottram -- accepted
  Echinopsis arebaloi Cárdenas -- not accepted
  Echinopsis atacamensis (Phil.) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis atacamensis ssp. atacamensis (Phil.) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis atacamensis ssp. pasacana (F.A.C. Weber ex Rümpler) G. Navarro -- accepted
  Echinopsis aurantiaca (Rausch) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis aurea Britton & Rose -- accepted
  Echinopsis aurea ssp. aurea Britton & Rose -- accepted
  Echinopsis aurea ssp. fallax (Oehme) M. Lowry -- accepted
  Echinopsis aurea ssp. shaferi (Britton & Rose) M. Lowry -- accepted
  Echinopsis ayopayana F. Ritter & Rausch -- accepted
  Echinopsis backebergii Werderm. -- accepted
  Echinopsis backebergii ssp. backebergii Werderm. -- accepted
  Echinopsis backebergii ssp. wrightiana (Backeb.) M. Lowry -- accepted
  Echinopsis baldiana Speg. -- not accepted
  Echinopsis boedekeriana (Boed.) Harden -- not accepted
  Echinopsis bolligeriana Mächler & Helmut Walter -- accepted
  Echinopsis boyuibensis F. Ritter -- not accepted
  Echinopsis breviflora (Backeb.) M. Lowry -- accepted
  Echinopsis brevispina (F. Ritter) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis bridgesii Salm-Dyck -- accepted
  Echinopsis bridgesii ssp. bridgesii Salm-Dyck -- accepted
  Echinopsis bridgesii ssp. vallegrandensis (Cárdenas) M. Lowry -- accepted
  Echinopsis bridgesii ssp. yungasensis (F. Ritter) P.J. Braun & Esteves -- accepted
  Echinopsis bruchii (Britton & Rose) Friedrich & Glaetzle -- not accepted
  Echinopsis caespitosa J.A. Purpus -- not accepted
  Echinopsis caineana (Cárdenas) D.R. Hunt -- accepted
  Echinopsis cajasensis F. Ritter -- not accepted
  Echinopsis calliantholilacina Cárdenas -- not accepted
  Echinopsis callichroma Cárdenas -- not accepted
  Echinopsis calochlora K. Schum. -- accepted
  Echinopsis calochlora ssp. glaetzleana P.J. Braun & Esteves -- not accepted
  Echinopsis calorubra Cárdenas -- accepted
  Echinopsis camarguensis (Cárdenas) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis candicans (Gillies ex Salm-Dyck) D.R. Hunt -- accepted
  Echinopsis carmineiflora H. Friedrich -- not accepted
  Echinopsis caulescens (F. Ritter) M. Lowry -- accepted
  Echinopsis cephalomacrostibas (Werderm. & Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis cerdana Cárdenas -- not accepted
  Echinopsis chacoana Schütz -- not accepted
  Echinopsis chalaensis (Rauh & Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis chamaecereus H. Friedrich & Glaetzle -- accepted
  Echinopsis chiloensis (Colla) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis chiloensis ssp. chiloensis (Colla) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis chiloensis ssp. litoralis (Johow) M. Lowry -- accepted
  Echinopsis chiloensis ssp. skottsbergii (Backeb. ex Skottsb.) G.J. Charles -- accepted
  Echinopsis chrysantha Werderm. -- accepted
  Echinopsis chrysochete Werderm. -- accepted
  Echinopsis cinnabarina (Hook.) Labour. -- accepted
  Echinopsis clavata (F. Ritter) D.R. Hunt -- accepted
  Echinopsis cochabambensis Backeb. -- not accepted
  Echinopsis comarapana Cárdenas -- not accepted
  Echinopsis conaconensis (Cárdenas) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis coquimbana (Molina) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis cordobensis Speg. -- not accepted
  Echinopsis coronata Cárdenas -- not accepted
  Echinopsis cotacajesi Cárdenas -- not accepted
  Echinopsis cotacajesii Cárdenas -- not accepted
  Echinopsis courantii (K. Schum.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis crassicaulis (R. Kiesling) Friedrich & Glaetzle -- not accepted
  Echinopsis cuzcoensis (Britton & Rose) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis densispina Werderm. -- accepted
  Echinopsis deserticola (Werderm.) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis elongata (Backeb.) Friedrich & Glaetzle -- not accepted
  Echinopsis escayachensis (Cárdenas) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis fabrisii (R. Kiesling) G.D. Rowley -- not accepted
  Echinopsis famatimensis (Speg.) Werderm. -- accepted
  Echinopsis ferox (Britton & Rose) Backeb. -- accepted
  Echinopsis ferox ssp. potosina (Werderm.) M. Lowry -- not accepted
  Echinopsis ferox var. potosina (Werderm.) Rausch -- not accepted
  Echinopsis fiebrigii Gürke -- not accepted
  Echinopsis formosa (Pfeiff.) Jacobi ex Salm-Dyck -- accepted
  Echinopsis formosa ssp. bruchii (Britton & Rose) M. Lowry -- accepted
  Echinopsis formosa ssp. formosa (Pfeiff.) Jacobi ex Salm-Dyck -- accepted
  Echinopsis formosa ssp. kieslingii (Rausch) M. Lowry -- accepted
  Echinopsis formosa ssp. korethroides (Werderm.) M. Lowry -- accepted
  Echinopsis formosa ssp. randallii (Cárdenas) M. Lowry -- accepted
  Echinopsis formosa ssp. rosarioana (Rausch) M. Lowry -- accepted
  Echinopsis glauca (F. Ritter) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis haematantha (Speg.) D.R. Hunt -- accepted
  Echinopsis hahniana (Backeb.) R.S. Wallace -- accepted
  Echinopsis hamatacantha Backeb. -- not accepted
  Echinopsis hammerschmidii Cárdenas -- not accepted
  Echinopsis hardeniana Boed. -- not accepted
  Echinopsis herbasii Cárdenas -- not accepted
  Echinopsis hertrichiana (Backeb.) D.R. Hunt -- accepted
  Echinopsis hualfinensis (Rausch) Friedrich & Glaetzle -- not accepted
  Echinopsis huascha (F.A.C. Weber) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis huascha ssp. huascha (F.A.C. Weber) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis huascha ssp. robusta (Rausch) M. Lowry -- accepted
  Echinopsis huotii (J.F. Cels) Labour. -- not accepted
  Echinopsis huotii ssp. vallegrandensis (Cárdenas) G. Navarro -- not accepted
  Echinopsis hystrichoides F. Ritter -- not accepted
  Echinopsis ibicuatensis Cárdenas -- not accepted
  Echinopsis intricatissima Speg. -- not accepted
  Echinopsis jajoana (Backeb.) Blos. -- accepted
  Echinopsis klingleriana Cárdenas -- not accepted
  Echinopsis korethroides Werderm. -- not accepted
  Echinopsis kratochviliana Backeb. -- not accepted
  Echinopsis kuehnrichii (Fric) Friedrich & Glaetzle -- not accepted
  Echinopsis lageniformis (C.F. Först.) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis lateritia Gürke -- accepted
  Echinopsis lecoriensis Cárdenas -- not accepted
  Echinopsis leucantha (Gillies ex Salm-Dyck) Walp. -- accepted
  Echinopsis longispina (Britton & Rose) Werderm. -- not accepted
  Echinopsis mamillosa Gürke -- accepted
  Echinopsis mamillosa ssp. silvatica (F. Ritter) P.J. Braun & Esteves -- not accepted
  Echinopsis marsoneri Werderm. -- accepted
  Echinopsis mataranensis Cárdenas -- not accepted
  Echinopsis maximiliana Heyder ex A. Dietr. -- accepted
  Echinopsis maximiliana ssp. caespitosa (J.A. Purpus) M. Lowry -- accepted
  Echinopsis maximiliana ssp. maximiliana Heyder ex A. Dietr. -- accepted
  Echinopsis maximiliana ssp. westii (Hutchison) M. Lowry -- accepted
  Echinopsis melanopotamica Speg. -- not accepted
  Echinopsis meyeri Heese -- not accepted
  Echinopsis minuana Speg. -- not accepted
  Echinopsis mirabilis Speg. -- accepted
  Echinopsis molesta Speg. -- not accepted
  Echinopsis multiplex (Pfeiff.) Zucc. ex Pfeiff. & Otto -- not accepted
  Echinopsis nigra Backeb. -- not accepted
  Echinopsis obrepanda (Salm-Dyck) K. Schum. -- accepted
  Echinopsis obrepanda ssp. calorubra (Cárdenas) G. Navarro -- not accepted
  Echinopsis obrepanda ssp. tapecuana (F. Ritter) G. Navarro -- not accepted
  Echinopsis obrepanda var. calorubra (Cárdenas) Rausch -- not accepted
  Echinopsis oligotricha (Cárdenas) M. Lowry -- accepted
  Echinopsis oxygona (Link) Zucc. ex Pfeiff. -- accepted
  Echinopsis pachanoi (Britton & Rose) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis pampana (Britton & Rose) D.R. Hunt -- accepted
  Echinopsis pampariuzii Cárdenas -- accepted
  Echinopsis paraguayensis Mundt ex F. Ritter -- not accepted
  Echinopsis pasacana (F.A.C. Weber ex Rümpler) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis pecheretiana (Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis pentlandii (Hook.) Salm-Dyck ex A. Dietr. -- accepted
  Echinopsis pentlandii ssp. hardeniana (Boed.) G. Navarro -- not accepted
  Echinopsis pentlandii ssp. larae (Cárdenas) G. Navarro -- not accepted
  Echinopsis pereziensis Cárdenas -- not accepted
  Echinopsis peruviana (Britton & Rose) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis peruviana ssp. puquiensis (Rauh & Backeb.) Ostolaza -- not accepted
  Echinopsis poco (Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis pojoensis Cárdenas -- not accepted
  Echinopsis polyancistra Backeb. -- not accepted
  Echinopsis potosina Werderm. -- not accepted
  Echinopsis pseudocandicans (R. Kiesling) Friedrich & Glaetzle -- not accepted
  Echinopsis pseudomammillosa Cárdenas -- not accepted
  Echinopsis pugionacantha Rose & Boed. -- accepted
  Echinopsis pugionacantha ssp. haemantha (Rausch) M. Lowry -- accepted
  Echinopsis pugionacantha ssp. pugionacantha Rose & Boed. -- accepted
  Echinopsis pugionacantha ssp. rossii (Boed.) G. Navarro -- accepted
  Echinopsis puquiensis (Rauh & Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis purpureopilosa (Weing.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis quadratiumbonata (F. Ritter) D.R. Hunt -- accepted
  Echinopsis quinesensis (Rausch) Friedrich & Glaetzle -- not accepted
  Echinopsis randallii (Cárdenas) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis rhodotricha K. Schum. -- accepted
  Echinopsis rhodotricha ssp. chacoana (Schütz) P.J. Braun & Esteves -- accepted
  Echinopsis rhodotricha ssp. rhodotricha K. Schum. -- accepted
  Echinopsis ritteri Boed. -- not accepted
  Echinopsis riviere-de-caraltii Cárdenas -- not accepted
  Echinopsis rivierei (Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis rojasii Cárdenas -- accepted
  Echinopsis roseo-lilacina Cárdenas -- not accepted
  Echinopsis rossii Boed. -- not accepted
  Echinopsis rowleyi H. Friedrich -- accepted
  Echinopsis rubinghiana (Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis saltensis Speg. -- accepted
  Echinopsis saltensis ssp. saltensis Speg. -- accepted
  Echinopsis saltensis ssp. schreiteri (A. Cast.) M. Lowry -- accepted
  Echinopsis sanguiniflora (Backeb.) D.R. Hunt -- not accepted
  Echinopsis santaensis (Rauh & Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis schickendantzii F.A.C. Weber -- accepted
  Echinopsis schieliana (Backeb.) D.R. Hunt -- accepted
  Echinopsis schoenii (Rauh & Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis schreiteri (A. Cast.) Werderm. -- not accepted
  Echinopsis scoparia Werderm. -- not accepted
  Echinopsis scopulicola (F. Ritter) Mottram -- not accepted
  Echinopsis shaferi Britton & Rose -- not accepted
  Echinopsis silvatica F. Ritter -- not accepted
  Echinopsis silvestrii Speg. -- not accepted
  Echinopsis skottsbergii (Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis smrziana Backeb. -- not accepted
  Echinopsis spegazziniana Britton & Rose -- not accepted
  Echinopsis spiniflora (K. Schum.) A. Berger -- accepted
  Echinopsis stilowiana (Backeb.) Lam. -- accepted
  Echinopsis stollenwerkiana Boed. -- not accepted
  Echinopsis strigosa (Salm-Dyck) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis subdenudatus Cárdenas -- not accepted
  Echinopsis sucrensis Cárdenas -- not accepted
  Echinopsis tacaquirensis (Vaupel) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis tacaquirensis ssp. taquimbalensis (Cárdenas) G. Navarro -- not accepted
  Echinopsis tapecuana F. Ritter -- not accepted
  Echinopsis taquimbalensis (Cárdenas) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis taratensis (Cárdenas) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis tarijensis (Vaupel) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis tarijensis ssp. bertramiana (Backeb.) M. Lowry -- accepted
  Echinopsis tarijensis ssp. herzogianus (Cárdenas) G. Navarro -- not accepted
  Echinopsis tarijensis ssp. tarijensis (Vaupel) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis tarijensis ssp. totorensis (Cárdenas) G. Navarro -- not accepted
  Echinopsis tarmaensis (Rauh & Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis tegeleriana (Backeb.) D.R. Hunt -- accepted
  Echinopsis terscheckii (J. Parm. ex Pfeiff.) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis thelegona (F.A.C. Weber) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis thelegonoides (Speg.) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis thionantha (Speg.) Werderm. -- accepted
  Echinopsis thionantha ssp. ferrarii (Rausch) M. Lowry -- accepted
  Echinopsis thionantha ssp. glauca (F. Ritter) M. Lowry -- accepted
  Echinopsis thionantha ssp. thionantha (Speg.) Werderm. -- accepted
  Echinopsis tiegeliana (Wessner) D.R. Hunt -- accepted
  Echinopsis toralapana Cárdenas -- not accepted
  Echinopsis torrecillasensis Cárdenas -- not accepted
  Echinopsis tulhuayacensis (Ochoa) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis tunariensis (Cárdenas) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis uebelmanniana (Lembcke & Backeb.) A.E. Hoffm. -- not accepted
  Echinopsis uyupampensis (Backeb.) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis vallegrandensis Cárdenas -- not accepted
  Echinopsis vasquezii (Rausch) G.D. Rowley -- accepted
  Echinopsis vatteri (R. Kiesling) G.D. Rowley -- not accepted
  Echinopsis volliana (Backeb.) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis walteri (R. Kiesling) Friedrich & Glaetzle -- accepted
  Echinopsis werdermanniana (Backeb.) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis yungasensis F. Ritter -- not accepted
  Echinopsis yuquina D.R. Hunt -- accepted
  Emorycactus Doweld -- not accepted
  Emorycactus parryi (Engelm.) Doweld -- not accepted
  Emorycactus polycephalus (Engelm. & J.M. Bigelow) Doweld -- not accepted
  Emorycactus xeranthemoides (J.M. Coult.) Doweld -- not accepted
  Encephalocarpus A. Berger -- not accepted
  Encephalocarpus strobiliformis (Werderm.) A. Berger -- not accepted
  Eomatucana F. Ritter -- not accepted
  Eomatucana madisoniorum (Hutchison) F. Ritter -- not accepted
  Eomatucana oreodoxa F. Ritter -- not accepted
  Epiphyllanthus A. Berger -- not accepted
  Epiphyllanthus candidus (Loefgr.) Britton & Rose -- not accepted
  Epiphyllanthus microsphaericus (K. Schum.) Britton & Rose -- not accepted
  Epiphyllanthus obovatus (Engelm. ex K. Schum.) Britton & Rose -- not accepted
  Epiphyllanthus obtusangulus (K. Schum.) A. Berger -- not accepted
  Epiphyllopsis A. Berger -- not accepted
  Epiphyllopsis gaertneri (Regel) A. Berger -- not accepted
  Epiphyllum Haw. -- accepted -- climbing cactus
  Epiphyllum ackermannii Haw. -- not accepted
  Epiphyllum anguliger (Lem.) G. Don ex Loudon -- accepted
  Epiphyllum baueri Dorsch -- accepted
  Epiphyllum cartagense (F.A.C. Weber) Britton & Rose -- accepted
  Epiphyllum caudatum Britton & Rose -- not accepted
  Epiphyllum chrysocardium Alexander -- not accepted
  Epiphyllum columbiense (F.A.C. Weber) Dodson & Gentry -- not accepted
  Epiphyllum costaricense (F.A.C. Weber) Britton & Rose -- not accepted
  Epiphyllum crenatum (Lindl.) G. Don -- accepted
  Epiphyllum crenatum ssp. crenatum (Lindl.) G. Don -- accepted
  Epiphyllum crenatum ssp. kimnachii (Bravo) U. Guzmán -- accepted
  Epiphyllum darrahii (K. Schum.) Britton & Rose -- not accepted
  Epiphyllum eichlamii (Weing.) L.O. Williams -- not accepted
  Epiphyllum gigas Woodson & Cutak -- not accepted
  Epiphyllum grandilobum (F.A.C. Weber) Britton & Rose -- accepted
  Epiphyllum guatemalense Britton & Rose -- not accepted
  Epiphyllum hookeri Haw. -- accepted -- nightblooming cactus, Nopalillo de Hooker
  Epiphyllum hookeri ssp. columbiense (F.A.C. Weber) Ralf Bauer -- accepted
  Epiphyllum hookeri ssp. guatemalense (Britton & Rose) Ralf Bauer -- accepted
  Epiphyllum hookeri ssp. hookeri Haw. -- accepted
  Epiphyllum hookeri ssp. pittieri (F.A.C. Weber) Ralf Bauer -- accepted
  Epiphyllum laui Kimnach -- accepted
  Epiphyllum lepidocarpum (F.A.C. Weber) Britton & Rose -- accepted
  Epiphyllum macrocarpum (F.A.C. Weber) Backeb. -- not accepted
  Epiphyllum nelsonii Britton & Rose -- not accepted
  Epiphyllum oxypetalum (DC.) Haw. -- accepted -- Nopalillo criollo, Dutchman's pipe cactus
  Epiphyllum phyllanthus (L.) Haw. -- accepted -- climbing cactus
  Epiphyllum phyllanthus ssp. phyllanthus (L.) Haw. -- accepted
  Epiphyllum phyllanthus ssp. rubrocoronatum (Kimnach) Ralf Bauer -- accepted
  Epiphyllum phyllanthus var. rubrocoronatum Kimnach -- not accepted
  Epiphyllum pumilum Britton & Rose -- accepted
  Epiphyllum quezaltecum (Standl. & Steyerm.) L.O. Williams -- not accepted
  Epiphyllum stenopetalum (C.F. Först.) Britton & Rose -- not accepted
  Epiphyllum steyermarkii Croizat -- not accepted
  Epiphyllum strictum (Lem.) Britton & Rose -- not accepted
  Epiphyllum thomasianum (K. Schum.) Britton & Rose -- accepted
  Epiphyllum thomasianum ssp. costaricense (F.A.C. Weber) Ralf Bauer -- accepted
  Epiphyllum thomasianum ssp. thomasianum (K. Schum.) Britton & Rose -- accepted
  Epiphyllum trimetrale Croizat -- not accepted
  Epiphyllum truncatum Haw. -- not accepted
  Epithelantha A. Weber ex Britton & Rose -- accepted -- pingpong ball cactus
  Epithelantha bokei L.D. Benson -- accepted -- Biznaga-blanca de Boquillas, Boke's button cactus
  Epithelantha densispina Bravo -- not accepted
  Epithelantha greggii (Engelm.) Orcutt -- not accepted
  Epithelantha micromeris (Engelm.) A. Weber ex Britton & Rose -- accepted -- Biznaga-blanca chilona, pingpong ball cactus
  Epithelantha micromeris ssp. greggii (Engelm.) N.P. Taylor -- not accepted
  Epithelantha micromeris ssp. pachyrhiza (W.T. Marshall) N.P. Taylor -- not accepted
  Epithelantha micromeris ssp. polycephala (Backeb.) Glass -- not accepted
  Epithelantha micromeris var. pachyrhiza W.T. Marshall -- not accepted
  Epithelantha micromeris var. polycephala (Backeb.) Glass & R.A. Foster -- not accepted
  Epithelantha pachyrhiza (W.T. Marshall) Backeb. -- not accepted
  Epithelantha petri Halda & Horácek -- not accepted
  Epithelantha petrii Halda & Horácek -- not accepted
  Epithelantha polycephala Backeb. -- not accepted
  Epithelantha rufispina Bravo -- not accepted
  Erdisia Britton & Rose -- not accepted
  Erdisia apiciflora (Vaupel) Werderm. -- not accepted
  Erdisia aureispina Backeb. & H. Jacobsen -- not accepted
  Erdisia erecta Backeb. -- not accepted
  Erdisia fortalezensis F. Ritter -- not accepted
  Erdisia maxima Backeb. -- not accepted
  Erdisia meyenii Britton & Rose -- not accepted
  Erdisia philippii (Regel & Schmidt) Britton & Rose -- not accepted
  Erdisia quadrangularis Rauh & Backeb. -- not accepted
  Erdisia sextoniana Backeb. -- not accepted
  Erdisia spiniflora (Phil.) Britton & Rose -- not accepted
  Erdisia squarrosa (Vaupel) Britton & Rose -- not accepted
  Erdisia tenuicula Backeb. -- not accepted
  Eriocactus Backeb. -- not accepted
  Eriocactus ampliocostatus F. Ritter -- not accepted
  Eriocactus claviceps F. Ritter -- not accepted
  Eriocactus leninghausii Backeb. ex Schaffnit -- not accepted
  Eriocactus magnificus F. Ritter -- not accepted
  Eriocactus nigrispinus (K. Schum.) F. Ritter -- not accepted
  Eriocactus schumannianus (Nicolai) Backeb. -- not accepted
  Eriocactus warasii F. Ritter -- not accepted
  Eriocereus (A. Berger) Riccob. -- not accepted
  Eriocereus martinii (Labour.) Riccob. -- not accepted -- moon cactus
  Eriocereus spinosissimus Buining & Brederoo -- not accepted
  Eriosyce Phil. -- accepted
  Eriosyce algarrobensis F. Ritter -- not accepted
  Eriosyce andreaeana Katt. -- not accepted
  Eriosyce aspillagae (Söhrens) Katt. -- accepted
  Eriosyce aspillagae ssp. maechlerorum Helmut Walter -- not accepted
  Eriosyce aurata (Pfeiff.) Backeb. -- accepted
  Eriosyce bulbocalyx (Werderm.) Katt. -- accepted
  Eriosyce calderana (F. Ritter) Ferryman -- accepted
  Eriosyce caligophila R. Pinto -- not accepted
  Eriosyce ceratistes (Otto) Britton & Rose -- not accepted
  Eriosyce chilensis (Hildm. ex K. Schum.) Katt. -- accepted
  Eriosyce confinis (F. Ritter) Katt. -- accepted
  Eriosyce crispa (F. Ritter) Katt. -- accepted
  Eriosyce crispa ssp. crispa (F. Ritter) Katt. -- accepted
  Eriosyce crispa ssp. totoralensis (F. Ritter) Katt. -- accepted
  Eriosyce curvispina (Bertero ex Colla) Katt. -- accepted
  Eriosyce curvispina ssp. armata (F. Ritter) Katt. -- accepted
  Eriosyce curvispina ssp. curvispina (Bertero ex Colla) Katt. -- accepted
  Eriosyce curvispina ssp. marksiana (F. Ritter) Ferryman -- accepted
  Eriosyce eriosyzoides (F. Ritter) Ferryman -- accepted
  Eriosyce eriosyzoides ssp. atroviridis (F. Ritter) Ferryman -- accepted
  Eriosyce eriosyzoides ssp. eriosyzoides (F. Ritter) Ferryman -- accepted
  Eriosyce esmeraldana (F. Ritter) Katt. -- accepted
  Eriosyce garaventae (F. Ritter) Katt. -- accepted
  Eriosyce heinrichiana (Backeb.) Katt. -- accepted
  Eriosyce ihotzkyanae F. Ritter -- not accepted
  Eriosyce iquiquensis (F. Ritter) Ferryman -- accepted
  Eriosyce islayensis (C.F. Först.) Katt. -- accepted
  Eriosyce islayensis ssp. grandis (Rauh & Backeb.) G.J. Charles -- accepted
  Eriosyce islayensis ssp. islayensis (C.F. Först.) Katt. -- accepted
  Eriosyce islayensis ssp. omasensis (Ostolaza & Mischler) G.J. Charles -- accepted
  Eriosyce lapampaensis F. Ritter -- not accepted
  Eriosyce laui Lüthy -- accepted
  Eriosyce megacarpa F. Ritter -- not accepted
  Eriosyce megliolii (Rausch) Ferryman -- accepted
  Eriosyce napina (Phil.) Katt. -- accepted
  Eriosyce napina ssp. aerocarpa (F. Ritter) Ferryman -- accepted
  Eriosyce napina ssp. duripulpa (F. Ritter) Katt. -- not accepted
  Eriosyce napina ssp. glabrescens (F. Ritter) Ferryman -- accepted
  Eriosyce napina ssp. lembckei (Backeb.) Katt. -- accepted
  Eriosyce napina ssp. napina (Phil.) Katt. -- accepted
  Eriosyce napina ssp. tenebrica (F. Ritter) Ferryman -- accepted
  Eriosyce occulta Katt. -- accepted
  Eriosyce odieri (Lem. ex Salm-Dyck) Katt. -- accepted
  Eriosyce odieri ssp. krausii (F. Ritter) Ferryman -- accepted
  Eriosyce odieri ssp. odieri (Lem. ex Salm-Dyck) Katt. -- accepted
  Eriosyce paucicostata (F. Ritter) Ferryman -- accepted
  Eriosyce paucicostata ssp. echinus (F. Ritter) Ferryman -- accepted
  Eriosyce paucicostata ssp. floccosa (F. Ritter) Ferryman -- accepted
  Eriosyce paucicostata ssp. paucicostata (F. Ritter) Ferryman -- accepted
  Eriosyce recondita (F. Ritter) Katt. -- accepted
  Eriosyce rodentiophila F. Ritter -- accepted
  Eriosyce sandillon (Gay) Phil. -- not accepted
  Eriosyce senilis (Backeb.) Katt. -- accepted
  Eriosyce senilis ssp. coimasensis (F. Ritter) Katt. -- accepted
  Eriosyce senilis ssp. senilis (Backeb.) Katt. -- accepted
  Eriosyce simulans (F. Ritter) Katt. -- accepted
  Eriosyce sociabilis (F. Ritter) Katt. -- accepted
  Eriosyce spinibarbis F. Ritter -- not accepted
  Eriosyce strausiana (K. Schum.) Katt. -- accepted
  Eriosyce strausiana ssp. pachacoensis (Rausch) Ferryman -- accepted
  Eriosyce strausiana ssp. strausiana (K. Schum.) Katt. -- accepted
  Eriosyce subgibbosa (Haw.) Katt. -- accepted
  Eriosyce subgibbosa ssp. clavata (Söhrens) Katt. -- accepted
  Eriosyce subgibbosa ssp. subgibbosa (Haw.) Katt. -- accepted
  Eriosyce subgibbosa ssp. vallenarensis (F. Ritter) Katt. -- accepted
  Eriosyce subgibbosa ssp. wagenknechtii (F. Ritter) Katt. -- accepted
  Eriosyce taltalensis (Hutchison) Katt. -- accepted
  Eriosyce taltalensis ssp. pygmaea (F. Ritter) Ferryman -- accepted
  Eriosyce taltalensis ssp. taltalensis (Hutchison) Katt. -- accepted
  Eriosyce umadeave (Werderm.) Katt. -- accepted
  Eriosyce vertongenii (J.G. Lamb.) D.R. Hunt -- not accepted
  Eriosyce villicumensis (Rausch) Katt. -- accepted
  Eriosyce villosa (Monv.) Katt. -- accepted
  Erythrorhipsalis A. Berger -- not accepted
  Erythrorhipsalis pilocarpa (Loefgr.) A. Berger -- not accepted
  Escobaria Britton & Rose -- accepted -- foxtail cactus, pincushion cactus
  Escobaria aguirreana (Glass & R.A. Foster) N.P. Taylor -- not accepted
  Escobaria albicolumnaria Hester -- not accepted -- column foxtail cactus
  Escobaria alversonii (J.M. Coult.) N.P. Taylor -- accepted -- cushion foxtail cactus
  Escobaria asperispina (Boed.) D.R. Hunt -- not accepted
  Escobaria bella Britton & Rose -- not accepted
  Escobaria bisbeeana (Orcutt) Borg -- not accepted
  Escobaria chaffeyi Britton & Rose -- not accepted -- Biznaga-Escobar de Cedros
  Escobaria chihuahuensis Britton & Rose -- accepted
  Escobaria chihuahuensis ssp. chihuahuensis Britton & Rose -- accepted
  Escobaria chihuahuensis ssp. henricksonii (Glass & R.A. Foster) N.P. Taylor -- accepted
  Escobaria chlorantha (Engelm.) Buxb. -- accepted
  Escobaria cubensis (Britton & Rose) D.R. Hunt -- accepted
  Escobaria dasyacantha (Engelm.) Britton & Rose -- accepted -- Biznaga-Escobar de espinas gruesas, Big Bend foxtail cactus
  Escobaria dasyacantha ssp. chaffeyi (Britton & Rose) N.P. Taylor -- accepted
  Escobaria dasyacantha ssp. dasyacantha (Engelm.) Britton & Rose -- accepted
  Escobaria dasyacantha var. varicolor (Tiegel) D.R. Hunt -- not accepted
  Escobaria deserti (Engelm.) Buxb. -- not accepted
  Escobaria duncanii (Hester) Backeb. -- accepted
  Escobaria emskoetteriana (Quehl) Borg -- accepted -- Biznaga-Escobar de Emskoetter, junior Tom Thumb cactus
  Escobaria guadalupensis S. Brack & K.D. Heil -- not accepted -- Guadalupe Mountain foxtail cactus, Guadalupe pincushion cactus
  Escobaria henricksonii Glass & R.A. Foster -- not accepted
  Escobaria hesteri (Y. Wright) Buxb. -- accepted -- Hester's foxtail cactus
  Escobaria laredoi (Glass & R.A. Foster) N.P. Taylor -- accepted
  Escobaria leei Rose ex Boed. -- not accepted
  Escobaria lloydii Britton & Rose -- accepted
  Escobaria minima (Baird) D.R. Hunt -- accepted -- birdfoot cactus, small coryphantha
  Escobaria missouriensis (Sweet) D.R. Hunt -- accepted -- Missouri foxtail cactus
  Escobaria missouriensis ssp. asperispina (Boed.) N.P. Taylor -- accepted
  Escobaria missouriensis ssp. missouriensis (Sweet) D.R. Hunt -- accepted
  Escobaria missouriensis ssp. navajoensis Hochstätter -- not accepted
  Escobaria missouriensis var. caespitosa (Engelm.) D.R. Hunt -- not accepted
  Escobaria muehlbaueriana (Boed.) F.M. Knuth -- not accepted
  Escobaria nellieae (Croizat) Backeb. -- not accepted
  Escobaria neomexicana (Engelm.) Buxb. -- not accepted
  Escobaria orcuttii Boed. -- not accepted -- Orcutt's foxtail cactus
  Escobaria orcuttii var. koenigii Castetter, P. Pierce & K.H. Schwer. -- not accepted
  Escobaria orcuttii var. macraxima Castetter, P. Pierce & K.H. Schwer. -- not accepted
  Escobaria robbinsiorum (W.H. Earle) D.R. Hunt -- not accepted -- Cochise pincushion cactus, Cochise foxtail cactus
  Escobaria robbinsorum (W.H. Earle) D.R. Hunt -- accepted -- Cochise foxtail cactus, Cochise pincushion cactus
  Escobaria roseana (Boed.) Buxb. -- not accepted
  Escobaria roseana ssp. galeanensis Haugg -- not accepted
  Escobaria runyonii Britton & Rose -- not accepted
  Escobaria sandbergii Castetter, P. Pierce & K.H. Schwer. -- not accepted -- San Andres Mountain foxtail cactus
  Escobaria sneedii Britton & Rose -- accepted -- carpet foxtail cactus
  Escobaria sneedii ssp. leei (Rose ex Boed.) D.R. Hunt -- not accepted
  Escobaria sneedii ssp. orcuttii (Boed.) Lüthy -- accepted
  Escobaria sneedii ssp. sneedii Britton & Rose -- accepted
  Escobaria sneedii var. leei (Rose ex Boed.) D.R. Hunt -- not accepted -- carpet foxtail cactus
  Escobaria strobiliformis (Polseg.) Boed. -- not accepted
  Escobaria strobiliformis auct. non (Poselg.) Boed. -- not accepted
  Escobaria tuberculosa (Engelm.) Britton & Rose -- accepted -- Biznaga-Escobar rómbica, white column foxtail cactus
  Escobaria tuberculosa var. varicolor (Tiegel) S. Brack & K.D. Heil -- not accepted
  Escobaria villardii Castetter, P. Pierce & K.H. Schwer. -- not accepted -- Sacramento Mountain foxtail cactus, Villard's pincushion cactus
  Escobaria vivipara (Nutt.) Buxb. -- accepted -- spinystar
  Escobaria vivipara var. alversonii (J.M. Coult.) D.R. Hunt -- not accepted
  Escobaria zilziana (Boed.) Backeb. -- accepted
  Escobrittonia Doweld -- not accepted
  Escobrittonia gracilis (L. Bremer & A.B. Lau) Doweld -- not accepted
  Escontria Rose -- accepted
  Escontria chiotilla (F.A.C. Weber) Rose -- accepted
  Escontria lepidantha (Eichlam) Buxb. -- not accepted
  Espostoa Britton & Rose -- accepted
  Espostoa blossfeldiorum (Werderm.) Buxb. -- accepted
  Espostoa calva F. Ritter -- accepted
  Espostoa frutescens Madsen -- accepted
  Espostoa guentheri (Kupper) Buxb. -- accepted
  Espostoa huanucoensis H. Johnson ex F. Ritter -- not accepted
  Espostoa hylaea F. Ritter -- accepted
  Espostoa lanata (Kunth) Britton & Rose -- accepted
  Espostoa lanata ssp. huanucoensis (H. Johnson ex F. Ritter) G.J. Charles -- accepted
  Espostoa lanata ssp. lanata (Kunth) Britton & Rose -- accepted
  Espostoa lanata ssp. lanianuligera (F. Ritter) G.J. Charles -- accepted
  Espostoa lanata ssp. ruficeps (F. Ritter) G.J. Charles -- accepted
  Espostoa lanianuligera F. Ritter -- not accepted
  Espostoa laticornua Rauh & Backeb. -- not accepted
  Espostoa melanostele (Vaupel) Borg -- accepted
  Espostoa melanostele ssp. melanostele (Vaupel) Borg -- accepted
  Espostoa melanostele ssp. nana (F. Ritter) G.J. Charles -- accepted
  Espostoa mirabilis F. Ritter -- accepted
  Espostoa nana F. Ritter -- not accepted
  Espostoa procera Rauh & Backeb. -- not accepted
  Espostoa ritteri Buining -- not accepted
  Espostoa ruficeps F. Ritter -- not accepted
  Espostoa senilis (F. Ritter) N.P. Taylor -- accepted
  Espostoa superba F. Ritter -- accepted
  Espostoa utcubambensis G.J. Charles -- accepted
  Espostoopsis Buxb. -- accepted
  Espostoopsis dybowskii (Rol.-Goss.) Buxb. -- accepted
  Eulychnia Phil. -- accepted
  Eulychnia acida Phil. -- accepted
  Eulychnia aricensis F. Ritter -- not accepted
  Eulychnia barquitensis F. Ritter -- not accepted
  Eulychnia breviflora Phil. -- accepted
  Eulychnia castanea (K. Schum.) Phil. -- accepted
  Eulychnia iquiquensis (K. Schum.) Britton & Rose -- accepted
  Eulychnia iquiquensis ssp. iquiquensis (K. Schum.) Britton & Rose -- accepted
  Eulychnia iquiquensis ssp. ritteri (Cullmann) D.R. Hunt -- accepted
  Eulychnia morromorenoensis F. Ritter -- not accepted
  Eulychnia procumbens Backeb. -- not accepted
  Eulychnia ritteri Cullmann -- not accepted
  Eulychnia saint-pieana F. Ritter -- not accepted
  Facheiroa Britton & Rose -- accepted
  Facheiroa braunii Esteves -- not accepted
  Facheiroa cephaliomelana Buining & Brederoo -- accepted
  Facheiroa cephaliomelana ssp. cephaliomelana Buining & Brederoo -- accepted
  Facheiroa cephaliomelana ssp. estevesii (P.J. Braun) N.P. Taylor & Zappi -- accepted
  Facheiroa chaetacantha (F. Ritter) P.J. Braun & Esteves -- not accepted
  Facheiroa estevesii P.J. Braun -- not accepted
  Facheiroa pilosa F. Ritter -- not accepted
  Facheiroa pubiflora Britton & Rose -- not accepted
  Facheiroa squamosa (Gürke) P.J. Braun & Esteves -- accepted
  Facheiroa squamosa ssp. polygona (F. Ritter) P.J. Braun & Esteves -- not accepted
  Facheiroa tenebrosa P.J. Braun & Esteves -- not accepted
  Facheiroa ulei (Gürke) Werderm. -- accepted
  Ferocactus Britton & Rose -- accepted -- barrel cactus
  Ferocactus acanthodes (Lem.) Britton & Rose -- not accepted
  Ferocactus acanthodes var. eastwoodiae L.D. Benson -- not accepted
  Ferocactus acanthodes var. lecontei (Engelm.) G.E. Linds. -- not accepted
  Ferocactus alamosanus (Britton & Rose) Britton & Rose -- accepted
  Ferocactus alamosanus ssp. alamosanus (Britton & Rose) Britton & Rose -- accepted
  Ferocactus alamosanus ssp. reppenhagenii (G. Unger) N.P. Taylor -- accepted
  Ferocactus chrysacanthus (Orcutt) Britton & Rose -- accepted
  Ferocactus chrysacanthus ssp. chrysacanthus (Orcutt) Britton & Rose -- accepted
  Ferocactus chrysacanthus ssp. grandiflorus (G.E. Linds.) N.P. Taylor -- accepted
  Ferocactus covillei Britton & Rose -- not accepted
  Ferocactus crassihamatus (F.A.C. Weber) Britton & Rose -- not accepted
  Ferocactus cylindraceus (Engelm.) Orcutt -- accepted -- Biznaga-barril cilíndrica, California barrel cactus
  Ferocactus cylindraceus ssp. cylindraceus (Engelm.) Orcutt -- accepted
  Ferocactus cylindraceus ssp. eastwoodiae (L.D. Benson) N.P. Taylor -- accepted
  Ferocactus cylindraceus ssp. lecontei (Engelm.) N.P. Taylor -- accepted
  Ferocactus cylindraceus var. tortulospinus (H.E. Gates) Bravo -- not accepted
  Ferocactus diguetii (F.A.C. Weber) Britton & Rose -- accepted
  Ferocactus eastwoodiae (L.D. Benson) L.D. Benson -- not accepted
  Ferocactus echidne (DC.) Britton & Rose -- accepted
  Ferocactus emoryi (Engelm.) Orcutt -- accepted -- Biznaga-barril de Emory, Emory's barrel cactus
  Ferocactus emoryi ssp. covillei (Britton & Rose) D.R. Hunt & Dimmitt -- accepted
  Ferocactus emoryi ssp. emoryi (Engelm.) Orcutt -- accepted
  Ferocactus emoryi ssp. rectispinus (Engelm.) N.P. Taylor -- accepted
  Ferocactus flavovirens (Scheidw.) Britton & Rose -- accepted
  Ferocactus fordii (Orcutt) Britton & Rose -- accepted
  Ferocactus fordii ssp. borealis N.P. Taylor -- accepted
  Ferocactus fordii ssp. fordii (Orcutt) Britton & Rose -- accepted
  Ferocactus glaucescens (DC.) Britton & Rose -- accepted
  Ferocactus glaucus (K. Schum.) N.P. Taylor -- not accepted
  Ferocactus gracilis H.E. Gates -- accepted
  Ferocactus gracilis ssp. gatesii (G.E. Linds.) N.P. Taylor -- accepted
  Ferocactus gracilis var. gracilis H.E. Gates -- not accepted
  Ferocactus haematacanthus (Muehlenpf.) Britton & Rose -- accepted
  Ferocactus hamatacanthus (Muehlenpf.) Britton & Rose -- accepted -- Biznaga-barril costillona, Turk's head
  Ferocactus hamatacanthus ssp. sinuatus (A. Dietr.) N.P. Taylor -- accepted
  Ferocactus hamatacanthus var. hamatacanthus (Muehlenpf.) Britton & Rose -- not accepted -- Turk's head
  Ferocactus herrerae J.G. Ortega -- accepted
  Ferocactus histrix (DC.) G.E. Linds. -- accepted
  Ferocactus johnsonii (Parry ex Engelm.) Britton & Rose -- not accepted
  Ferocactus johnstonianus Britton & Rose -- accepted
  Ferocactus latispinus (Haw.) Britton & Rose -- accepted
  Ferocactus latispinus ssp. greenwoodii (Glass) N.P. Taylor -- accepted
  Ferocactus latispinus ssp. latispinus (Haw.) Britton & Rose -- accepted
  Ferocactus latispinus ssp. spiralis (Karw. ex Pfeiff.) N.P. Taylor -- accepted
  Ferocactus lecontei (Engelm.) Britton & Rose -- not accepted -- Biznaga-barril de Gila
  Ferocactus lindsayi Bravo -- accepted
  Ferocactus macrodiscus (Mart.) Britton & Rose -- accepted
  Ferocactus macrodiscus ssp. macrodiscus (Mart.) Britton & Rose -- accepted
  Ferocactus macrodiscus ssp. septentrionalis (J. Meyrán) N.P. Taylor -- accepted
  Ferocactus mathssonii (K. Schum.) N.P. Taylor -- not accepted
  Ferocactus mesae-verdae (Boissev. & C. Davidson) N.P. Taylor -- not accepted
  Ferocactus parviflorus (Clover & Jotter) N.P. Taylor -- not accepted
  Ferocactus peninsulae (F.A.C. Weber) Britton & Rose -- accepted
  Ferocactus pilosus (Galeotti) Werderm. -- accepted
  Ferocactus polyancistrus (Engelm. & J.M. Bigelow) N.P. Taylor -- not accepted
  Ferocactus pottsii (Salm-Dyck) Backeb. -- accepted
  Ferocactus pubispinus (Engelm.) N.P. Taylor -- not accepted
  Ferocactus robustus (Link & Otto) Britton & Rose -- accepted
  Ferocactus santa-maria Britton & Rose -- accepted
  Ferocactus scheeri (Salm-Dyck) N.P. Taylor -- not accepted
  Ferocactus schwarzii G.E. Linds. -- accepted
  Ferocactus setispinus (Engelm.) L.D. Benson -- not accepted
  Ferocactus spinosior (Engelm.) N.P. Taylor -- not accepted
  Ferocactus tiburonensis (G.E. Linds.) Backeb. -- accepted
  Ferocactus townsendianus Britton & Rose -- accepted
  Ferocactus uncinatus (Galeotti ex Pfeiff.) Britton & Rose -- not accepted
  Ferocactus viridescens (Torr. & A. Gray) Britton & Rose -- accepted -- Biznaga-barril verdosa, San Diego barrel cactus, coast barrel cactus
  Ferocactus whipplei (Engelm. & J.M. Bigelow) N.P. Taylor -- not accepted
  Ferocactus wislizeni (Engelm.) Britton & Rose -- accepted -- Biznaga-barril de Nuevo México, candy barrel cactus, fishhook barrel cactus
  Ferocactus wrightiae (L.D. Benson) N.P. Taylor -- not accepted
  Floribunda F. Ritter -- not accepted
  Floribunda pusilliflora F. Ritter -- not accepted
  Frailea Britton & Rose -- accepted
  Frailea alacriportana Backeb. & Voll -- not accepted
  Frailea albiareolata Buining & Brederoo -- not accepted
  Frailea albicolumnaris F. Ritter -- not accepted
  Frailea albifusca F. Ritter -- not accepted
  Frailea asperispina F. Ritter -- not accepted
  Frailea aureinitens Buining & Brederoo -- not accepted
  Frailea aureispina F. Ritter -- not accepted
  Frailea buenekeri W.R. Abraham -- accepted
  Frailea buenekeri ssp. buenekeri W.R. Abraham -- accepted
  Frailea buenekeri ssp. densispina Hofacker & K. Herm -- accepted
  Frailea caespitosa (Speg.) Britton & Rose -- not accepted
  Frailea carminifilamentosa Kilian ex Backeb. -- not accepted
  Frailea castanea Backeb. -- accepted
  Frailea castanea ssp. harmoniana (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea cataphracta (Dams) Britton & Rose -- accepted
  Frailea cataphracta ssp. duchii (G. Moser) P.J. Braun & Esteves -- not accepted
  Frailea cataphracta ssp. melitae (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Frailea cataphracta ssp. tuyensis (Buining & G. Moser) P.J. Braun & Esteves -- not accepted
  Frailea cataphracta var. duchii G. Moser -- not accepted
  Frailea cataphracta var. tuyensis Buining & G. Moser -- not accepted
  Frailea chiquitana Cárdenas -- accepted
  Frailea concepcionensis Buining & G. Moser -- not accepted
  Frailea curvispina Buining & Brederoo -- accepted
  Frailea deminuta Buining & Brederoo -- not accepted
  Frailea fulviseta Buining & Brederoo -- accepted
  Frailea gracillima (Lem.) Britton & Rose -- accepted
  Frailea gracillima ssp. albifusca (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea gracillima ssp. gracillima (Lem.) Britton & Rose -- accepted
  Frailea gracillima ssp. horstii (F. Ritter) P.J. Braun & Esteves -- accepted
  Frailea grahliana (F. Haage) Britton & Rose -- not accepted
  Frailea horstii F. Ritter -- not accepted
  Frailea ignacionensis Buining & G. Moser -- not accepted
  Frailea knippeliana (Quehl) Britton & Rose -- not accepted
  Frailea lepida Buining & Brederoo -- not accepted
  Frailea mammifera Buining & Brederoo -- accepted
  Frailea mammifera ssp. angelesiae R. Kiesling & Metzing -- accepted
  Frailea mammifera ssp. mammifera Buining & Brederoo -- accepted
  Frailea matoana Buining & Brederoo -- not accepted
  Frailea melitae Buining & Brederoo -- not accepted
  Frailea moseriana Buining & Brederoo -- not accepted
  Frailea perbella Prestlé -- not accepted
  Frailea perumbilicata F. Ritter -- not accepted
  Frailea phaeodisca (Speg.) Spreg. -- accepted
  Frailea pseudogracillima F. Ritter -- not accepted
  Frailea pulcherrima (Arechav.) Speg. -- not accepted
  Frailea pullispina Backeb. -- not accepted
  Frailea pumila (Lem.) Britton & Rose -- accepted
  Frailea pumila ssp. albiareolata (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Frailea pumila ssp. maior (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea pumila var. maior F. Ritter -- not accepted
  Frailea pygmaea (Speg.) Britton & Rose -- accepted
  Frailea pygmaea ssp. albicolumnaris (F. Ritter) Hofacker -- accepted
  Frailea pygmaea ssp. altigibbera (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea pygmaea ssp. asperispina (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea pygmaea ssp. aureinitens (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Frailea pygmaea ssp. aureispina (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea pygmaea ssp. fulviseta (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Frailea pygmaea ssp. lilalunula (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea pygmaea ssp. pygmaea (Speg.) Britton & Rose -- accepted
  Frailea pygmaea ssp. tuyensis (Buining & G. Moser) Metzing -- accepted
  Frailea pygmaea var. altigibbera F. Ritter -- not accepted
  Frailea pygmaea var. lilalunula F. Ritter -- not accepted
  Frailea schilinzkyana (F. Haage ex K. Schum.) Britton & Rose -- accepted
  Frailea schilinzkyana ssp. concepcionensis (Buining & G. Moser) P.J. Braun & Esteves -- accepted
  Frailea schilinzkyana ssp. schilinzkyana (F. Haage ex K. Schum.) Britton & Rose -- accepted
  Frailea uhligiana Backeb. -- not accepted
  Frailea ybatense Buining & G. Moser -- not accepted
  Geohintonia Glass & W.A. Fitz Maur. -- accepted
  Geohintonia mexicana Glass & W.A. Fitz Maur. -- accepted
  Glandulicactus Backeb. -- not accepted
  Glandulicactus crassihamatus (F.A.C. Weber) Backeb. -- not accepted
  Glandulicactus mathssonii (K. Schum.) D.J. Ferguson -- not accepted
  Glandulicactus uncinatus (Galeotti ex Pfeiff.) Backeb. -- not accepted
  Glandulicactus uncinatus ssp. uncinatus (Galeotti ex Pfeiff.) Backeb. -- not accepted
  Glandulicactus wrightii (Engelm.) D.J. Ferguson -- not accepted
  Grusonia Rchb. f. ex Britton & Rose -- accepted
  Grusonia aggeria (Ralston & Hilsenb.) E.F. Anderson -- accepted
  Grusonia bradtiana (J.M. Coult.) Britton & Rose -- accepted
  Grusonia bulbispina (Engelm.) H. Rob. -- not accepted
  Grusonia clavata (Engelm.) H. Rob. -- accepted
  Grusonia densispina (Ralston & Hilsenb.) Rebman -- accepted
  Grusonia emoryi (Engelm.) Pinkava -- accepted
  Grusonia grahamii (Engelm.) H. Rob. -- accepted
  Grusonia hamiltonii H.E. Gates ex W.T. Marshall & T.M. Bock -- not accepted
  Grusonia invicta (Brandegee) E.F. Anderson -- not accepted
  Grusonia kunzei (Rose) Pinkava -- accepted
  Grusonia marenae (S.H. Parsons) E.F. Anderson -- not accepted
  Grusonia moelleri (A. Berger) E.F. Anderson -- not accepted
  Grusonia parishii (Orcutt) Pinkava -- accepted
  Grusonia pulchella (Engelm.) H. Rob. -- accepted
  Grusonia reflexispina (Wiggins & Rollins) E.F. Anderson -- not accepted
  Grusonia santamaria E.M. Baxter -- not accepted
  Grusonia schottii (Engelm.) H. Rob. -- accepted
  Gymnanthocereus Backeb. -- not accepted
  Gymnanthocereus altissimus F. Ritter -- not accepted
  Gymnanthocereus macracanthus F. Ritter -- not accepted
  Gymnanthocereus pilleifer F. Ritter -- not accepted
  Gymnocactus Backeb. -- not accepted
  Gymnocactus aguirreanus Glass & R.A. Foster -- not accepted
  Gymnocactus beguinii (F.A.C. Weber ex K. Schum.) Backeb. -- not accepted
  Gymnocactus roseanus (Boed.) Glass & R.A. Foster -- not accepted
  Gymnocalycium Pfeiff. ex Mittler -- accepted
  Gymnocalycium achirasense H. Till & Schatzl -- not accepted
  Gymnocalycium acorrugatum J.G. Lamb -- not accepted
  Gymnocalycium albispinum Backeb. -- not accepted
  Gymnocalycium alboareolatum Rausch -- accepted
  Gymnocalycium ambatoense Piltz -- not accepted
  Gymnocalycium amerhauseri H. Till -- accepted
  Gymnocalycium andreae (Boed.) Backeb. -- accepted
  Gymnocalycium angelae Mereg. -- not accepted
  Gymnocalycium anisitsii (K. Schum.) Britton & Rose -- accepted
  Gymnocalycium anisitsii ssp. anisitsii (K. Schum.) Britton & Rose -- accepted
  Gymnocalycium anisitsii ssp. damsii (K. Schum.) G.J. Charles -- accepted
  Gymnocalycium anisitsii ssp. multiproliferum (P.J. Braun) P.J. Braun & Esteves -- not accepted
  Gymnocalycium antherostele F. Ritter -- not accepted
  Gymnocalycium armatum F. Ritter -- not accepted
  Gymnocalycium artigas Herter -- not accepted
  Gymnocalycium asterium A. Cast. -- not accepted
  Gymnocalycium baldianum (Speg.) Speg. -- accepted
  Gymnocalycium bayrianum H. Till -- accepted
  Gymnocalycium berchtii Neuhuber -- accepted
  Gymnocalycium bicolor Schütz -- not accepted
  Gymnocalycium bodenbenderianus A. Berger -- not accepted
  Gymnocalycium borthii Koop ex H. Till -- not accepted
  Gymnocalycium bozsingianum Schütz -- not accepted
  Gymnocalycium brachyanthum (Gürke) Britton & Rose -- not accepted
  Gymnocalycium brachypetalum Speg. -- not accepted
  Gymnocalycium bruchii (Speg.) Hosseus -- accepted
  Gymnocalycium buenekeri (Buining) Swales -- not accepted
  Gymnocalycium calochlorum (Boed.) Y. Itô -- accepted
  Gymnocalycium capillaense (Schick) Hosseus -- accepted
  Gymnocalycium cardenasianum F. Ritter -- not accepted
  Gymnocalycium carminanthum Borth & Koop -- not accepted
  Gymnocalycium castellanosii Backeb. -- accepted
  Gymnocalycium castellanosii ssp. acorrugatum (J.G. Lamb) R. Kiesling & Metzing -- accepted
  Gymnocalycium castellanosii ssp. castellanosii Backeb. -- accepted
  Gymnocalycium castellanosii ssp. ferocior (Backeb. ex H. Till & Amerh.) G.J. Charles -- accepted
  Gymnocalycium chiquitanum Cárdenas -- accepted
  Gymnocalycium chubutense (Speg.) Speg. -- not accepted
  Gymnocalycium chuquisacanum Cárdenas -- not accepted
  Gymnocalycium damsii (K. Schum.) Britton & Rose -- not accepted
  Gymnocalycium delaetii (K. Schum.) Hosseus -- not accepted
  Gymnocalycium denudatum (Link & Otto) Pfeiff. ex Mittler -- accepted
  Gymnocalycium erinaceum J.G. Lamb -- accepted
  Gymnocalycium erolesii Neuhuber & C.A.L. Bercht -- not accepted
  Gymnocalycium eurypleurum F. Ritter -- accepted
  Gymnocalycium eytianum Cárdenas -- not accepted
  Gymnocalycium ferox (Backeb.) Slaba -- not accepted
  Gymnocalycium ferrarii Rausch -- not accepted
  Gymnocalycium fischeri Halda, Kupcák, Lukasik & Sladk. -- not accepted
  Gymnocalycium fleischerianum (Mereg., Metzing & R. Kiesling) L. Vala -- not accepted
  Gymnocalycium fleischerianum var. anoplum Y. Itô -- not accepted
  Gymnocalycium fleischerianum var. fleischerianum (Mereg., Metzing & R. Kiesling) L. Vala -- not accepted
  Gymnocalycium gaponii Neuhuber -- not accepted
  Gymnocalycium gerardii (Boed.) Y. Itô -- not accepted
  Gymnocalycium gibbosum (Haw.) Pfeiff. ex Mittler -- accepted
  Gymnocalycium gibbosum ssp. borthii (Koop ex H. Till) G.J. Charles -- accepted
  Gymnocalycium gibbosum ssp. ferox (Labour. ex Rümpler) Papsch -- not accepted
  Gymnocalycium gibbosum ssp. gibbosum (Haw.) Pfeiff. ex Mittler -- accepted
  Gymnocalycium glaucum F. Ritter -- accepted
  Gymnocalycium glaucum ssp. ferrarii (Rausch) G.J. Charles -- accepted
  Gymnocalycium glaucum ssp. glaucum F. Ritter -- accepted
  Gymnocalycium grandiflorum Backeb. -- not accepted
  Gymnocalycium guerkeanum (Heese) Britton & Rose -- not accepted
  Gymnocalycium hamatum F. Ritter -- not accepted
  Gymnocalycium hammerschmidii Backeb. -- not accepted
  Gymnocalycium horridispinum G. Frank ex H. Till -- not accepted
  Gymnocalycium horstii Buining -- accepted
  Gymnocalycium horstii ssp. buenekeri (Swales) P.J. Braun & Hofacker -- accepted
  Gymnocalycium horstii ssp. horstii Buining -- accepted
  Gymnocalycium hossei (Haage) A. Berger -- accepted
  Gymnocalycium immemoratum A. Cast. & Lelong -- not accepted
  Gymnocalycium intertextum Backeb. -- not accepted
  Gymnocalycium izozogsii Cárdenas -- not accepted
  Gymnocalycium jochumii Neuhuber -- not accepted
  Gymnocalycium joossensianum (Boed.) Britton & Rose -- not accepted
  Gymnocalycium kieslingii O. Ferrari -- accepted
  Gymnocalycium kroenleinii R. Kiesling -- accepted
  Gymnocalycium kurtzianum (Gürke) Britton & Rose -- not accepted
  Gymnocalycium lagunillasense Cárdenas -- not accepted
  Gymnocalycium leeanum (Hook.) Britton & Rose -- not accepted
  Gymnocalycium loricatum (Speg.) Speg. -- not accepted
  Gymnocalycium marquezii Cárdenas -- not accepted
  Gymnocalycium marsoneri Fric ex Y. Itô -- accepted
  Gymnocalycium marsoneri ssp. marsoneri Fric ex Y. Itô -- accepted
  Gymnocalycium marsoneri ssp. matoense (Buining & Brederoo) P.J. Braun & Esteves -- accepted
  Gymnocalycium matoense Buining & Brederoo -- not accepted
  Gymnocalycium mazanense (Backeb.) Backeb. -- not accepted
  Gymnocalycium megalothelon (Sencke) Britton & Rose -- not accepted
  Gymnocalycium megatae Y. Itô -- not accepted
  Gymnocalycium melanocarpum (Arechav.) Britton & Rose -- not accepted
  Gymnocalycium mesopotamicum R. Kiesling -- accepted
  Gymnocalycium michoga Y. Itô -- not accepted
  Gymnocalycium mihanovichii (Fric & Gürke) Britton & Rose -- accepted
  Gymnocalycium millaresii Cárdenas -- not accepted
  Gymnocalycium monvillei (Lem.) Pfeiff. ex Britton & Rose -- accepted
  Gymnocalycium monvillei ssp. gertrudae (Neuhuber) Neuhuber -- not accepted
  Gymnocalycium monvillei ssp. horridispinum (G. Frank ex H. Till) H. Till -- accepted
  Gymnocalycium monvillei ssp. monvillei (Lem.) Pfeiff. ex Britton & Rose -- accepted
  Gymnocalycium monvillei var. gertrudae Neuhuber -- not accepted
  Gymnocalycium moserianum Schütz -- not accepted
  Gymnocalycium mostii (Gürke) Britton & Rose -- accepted
  Gymnocalycium mostii ssp. ferocius Backeb. ex H. Till & Amerh. -- not accepted
  Gymnocalycium multiflorum (Hook.) Britton & Rose -- not accepted
  Gymnocalycium neuhuberi H. Till & W. Till -- accepted
  Gymnocalycium neumannianum (Backeb.) Hutchison -- not accepted
  Gymnocalycium nidulans Backeb. -- not accepted
  Gymnocalycium nigriareolatum Backeb. -- accepted
  Gymnocalycium obductum Piltz -- not accepted
  Gymnocalycium ochoterenae Backeb. -- accepted
  Gymnocalycium oenanthemum Backeb. -- accepted
  Gymnocalycium onychacanthum Y. Itô -- not accepted
  Gymnocalycium paediophilum F. Ritter ex Schütz -- not accepted
  Gymnocalycium papschii H. Till -- not accepted
  Gymnocalycium paraguayense (Mundt ex K. Schum.) Hosseus -- accepted
  Gymnocalycium paraguayense f. fleischerianum Mereg., Metzing & R. Kiesling -- not accepted
  Gymnocalycium pflanzii (Vaupel) Werderm. -- accepted
  Gymnocalycium pflanzii ssp. argentinense H. Till & W. Till -- accepted
  Gymnocalycium pflanzii ssp. pflanzii (Vaupel) Werderm. -- accepted
  Gymnocalycium pflanzii ssp. zegarrae (Cárdenas) G.J. Charles -- accepted
  Gymnocalycium piltziorum Schütz -- not accepted
  Gymnocalycium poeschlii Neuhuber -- not accepted
  Gymnocalycium proliferum (Backeb.) Backeb. -- not accepted
  Gymnocalycium pseudomalacocarpus Backeb. -- not accepted
  Gymnocalycium pugionacanthum Backeb. ex H. Till -- accepted
  Gymnocalycium ragonesei A. Cast. -- accepted
  Gymnocalycium rauschii H. Till & W. Till -- not accepted
  Gymnocalycium reductum (Link) Pfeiff. ex Mittler -- accepted
  Gymnocalycium reductum var. leeanum (Hook.) Papsch -- accepted
  Gymnocalycium reductum var. reductum (Link) Pfeiff. ex Mittler -- accepted
  Gymnocalycium rhodantherum (Boed.) H. Till -- accepted
  Gymnocalycium riograndense Cárdenas -- not accepted
  Gymnocalycium riojense Fric ex H. Till & W. Till -- not accepted
  Gymnocalycium ritterianum Rausch -- accepted
  Gymnocalycium robustum R. Kiesling, O. Ferrari & Metzing -- accepted
  Gymnocalycium rosae H. Till -- not accepted
  Gymnocalycium saglione (F. Cels) Britton & Rose -- not accepted
  Gymnocalycium saglionis (F. Cels) Britton & Rose -- accepted
  Gymnocalycium saglionis ssp. tilcarense (Backeb.) H. Till & W. Till -- not accepted
  Gymnocalycium schatzlianum Strigl & W. Till -- not accepted
  Gymnocalycium schickendantzii (F.A.C. Weber) Britton & Rose -- accepted
  Gymnocalycium schickendantzii ssp. delaetii (K. Schum.) G.J. Charles -- accepted
  Gymnocalycium schickendantzii ssp. schickendantzii (F.A.C. Weber) Britton & Rose -- accepted
  Gymnocalycium schroederianum Osten -- accepted
  Gymnocalycium schroederianum ssp. bayense R. Kiesling -- not accepted
  Gymnocalycium schroederianum ssp. paucicostatum R. Kiesling -- not accepted
  Gymnocalycium schuetzianum H. Till & Schatzl -- not accepted
  Gymnocalycium sigelianum (Schick) Hosseus -- not accepted
  Gymnocalycium spegazzinii Britton & Rose -- accepted
  Gymnocalycium spegazzinii ssp. cardenasianum (F. Ritter) R. Kiesling & Metzing -- accepted
  Gymnocalycium spegazzinii ssp. spegazzinii Britton & Rose -- accepted
  Gymnocalycium stellatum (Scheidw.) Speg. -- accepted
  Gymnocalycium stellatum ssp. occultum Fric ex H. Till & W. Till -- not accepted
  Gymnocalycium stenopleurum F. Ritter -- accepted
  Gymnocalycium striglianum Jeggle & H. Till -- accepted
  Gymnocalycium stuckertii (Speg.) Britton & Rose -- not accepted
  Gymnocalycium sutterianum (Schick) Hosseus -- not accepted
  Gymnocalycium taningaense Piltz -- accepted
  Gymnocalycium terweemeanum (Teucq ex Duursma) Borgmann & Piltz -- not accepted
  Gymnocalycium tilcarense (Backeb.) H. Till & W. Till -- not accepted
  Gymnocalycium tillianum Rausch -- not accepted
  Gymnocalycium tobuschianum Schick-Freib. -- not accepted
  Gymnocalycium tudae Y. Itô -- not accepted
  Gymnocalycium uebelmannianum Rausch -- accepted
  Gymnocalycium uruguayense (Arechav.) Britton & Rose -- accepted
  Gymnocalycium valnicekianum Jajó -- not accepted
  Gymnocalycium vatteri Buining -- not accepted
  Gymnocalycium walteri H. Till -- not accepted
  Gymnocalycium weissianum Backeb. -- not accepted
  Gymnocalycium zegarrae Cárdenas -- not accepted
  Gymnocereus Backeb. -- not accepted
  Gymnocereus amstutziae Rauh & Backeb. -- not accepted
  Gymnocereus microspermus (Werderm. & Backeb.) Backeb. -- not accepted
  Haageocereus Backeb. -- accepted
  Haageocereus acanthocladus Rauh & Backeb. -- not accepted
  Haageocereus achaetus Rauh & Backeb. -- not accepted
  Haageocereus acranthus (Vaupel) Backeb. -- accepted
  Haageocereus acranthus ssp. acranthus (Vaupel) Backeb. -- accepted
  Haageocereus acranthus ssp. olowinskianus (Backeb.) Ostolaza -- accepted
  Haageocereus akersii Backeb. -- not accepted
  Haageocereus albispinus (Akers) Backeb. -- not accepted
  Haageocereus ambiguus Rauh & Backeb. -- not accepted
  Haageocereus aureispinus Rauh & Backeb. -- not accepted
  Haageocereus australis Backeb. -- not accepted
  Haageocereus cephalomacrostibas (Backeb.) P.V. Heath -- not accepted
  Haageocereus chalaensis F. Ritter -- not accepted
  Haageocereus chilensis F. Ritter ex D.R. Hunt -- accepted
  Haageocereus chosicensis (Werderm. & Backeb.) Backeb. -- not accepted
  Haageocereus chrysacanthus (Akers) Backeb. -- not accepted
  Haageocereus chryseus F. Ritter -- not accepted
  Haageocereus churinensis (F. Ritter) P.V. Heath -- not accepted
  Haageocereus clavispinus Rauh & Backeb. -- not accepted
  Haageocereus crassiareolatus Rauh & Backeb. -- not accepted
  Haageocereus cuzcoensis (Kníze) P.V. Heath -- not accepted
  Haageocereus decumbens (Vaupel) Backeb. -- accepted
  Haageocereus decumbens ssp. tenuis (F. Ritter) D.R. Hunt -- not accepted
  Haageocereus deflexispinus Rauh & Backeb. -- not accepted
  Haageocereus dichromus Rauh & Backeb. -- not accepted
  Haageocereus divaricatispinus Rauh & Backeb. -- not accepted
  Haageocereus fulvus F. Ritter -- not accepted
  Haageocereus horrens Rauh & Backeb. -- not accepted
  Haageocereus icensis Backeb. ex F. Ritter -- not accepted
  Haageocereus icosagonoides Rauh & Backeb. -- not accepted
  Haageocereus johnsonii (F. Ritter) P.V. Heath -- not accepted
  Haageocereus lachayensis Rauh & Backeb. -- not accepted
  Haageocereus lanugispinus F. Ritter -- not accepted
  Haageocereus laredensis Backeb. -- not accepted
  Haageocereus litoralis Rauh & Backeb. -- not accepted
  Haageocereus longiareolatus Rauh & Backeb. -- not accepted
  Haageocereus longicomus (F. Ritter) P.V. Heath -- not accepted
  Haageocereus mamillatus var. brevior Rauh & Backeb. -- not accepted
  Haageocereus multicolorispinus Buining -- not accepted
  Haageocereus olowinskianus Backeb. -- not accepted
  Haageocereus pacalaensis Backeb. -- accepted
  Haageocereus pachystele Rauh & Backeb. -- not accepted
  Haageocereus paradoxus Rauh & Backeb. -- not accepted
  Haageocereus peniculatus Rauh & Backeb. -- not accepted
  Haageocereus piliger Rauh & Backeb. -- not accepted
  Haageocereus platinospinus (Werderm. & Backeb.) Backeb. -- accepted
  Haageocereus pluriflorus Rauh & Backeb. -- not accepted
  Haageocereus pseudoacranthus Rauh & Backeb. -- not accepted
  Haageocereus pseudomelanostele (Werderm. & Backeb.) Backeb. -- accepted
  Haageocereus pseudomelanostele ssp. acanthocladus (Rauh & Backeb.) Ostolaza -- accepted
  Haageocereus pseudomelanostele ssp. aureispinus (Rauh & Backeb.) Ostolaza -- accepted
  Haageocereus pseudomelanostele ssp. carminiflorus (Rauh & Backeb.) Ostolaza -- not accepted
  Haageocereus pseudomelanostele ssp. chryseus D.R. Hunt -- accepted
  Haageocereus pseudomelanostele ssp. pseudomelanostele (Werderm. & Backeb.) Backeb. -- accepted
  Haageocereus pseudomelanostele ssp. turbidus (Rauh & Backeb.) Ostolaza -- accepted
  Haageocereus pseudomelanostele var. carminiflorus Rauh & Backeb. -- not accepted
  Haageocereus pseudoversicolor Rauh & Backeb. -- accepted
  Haageocereus rauhii (Backeb.) P.V. Heath -- not accepted
  Haageocereus repens Rauh & Backeb. -- not accepted
  Haageocereus setosus (Akers) Backeb. -- not accepted
  Haageocereus subtilispinus F. Ritter -- not accepted
  Haageocereus symmetros Rauh & Backeb. -- not accepted
  Haageocereus tenuis F. Ritter -- accepted
  Haageocereus tenuispinus Rauh & Backeb. -- not accepted
  Haageocereus torataensis (F. Ritter) P.V. Heath -- not accepted
  Haageocereus turbidus Rauh & Backeb. -- not accepted
  Haageocereus versicolor (Werderm. & Backeb.) Backeb. -- accepted
  Haageocereus vulpes F. Ritter -- not accepted
  Haageocereus weberbaueri (K. Schum. ex Vaupel) D.R. Hunt -- not accepted
  Haageocereus winterianus (F. Ritter) P.V. Heath -- not accepted
  Haageocereus zangalensis F. Ritter -- not accepted
  Haageocereus zonatus Rauh & Backeb. -- not accepted
  Hamatocactus Britton & Rose -- not accepted
  Hamatocactus crassihamatus (F.A.C. Weber) Buxb. -- not accepted
  Hamatocactus uncinatus (Galeotti ex Pfeiff.) Orcutt -- not accepted
  Harrisia Britton -- accepted -- applecactus
  Harrisia aboriginum Small ex Britton & Rose -- accepted -- prickly applecactus, aboriginal pricklyapple
  Harrisia adscendens (Gürke) Britton & Rose -- accepted
  Harrisia balansae (K. Schum.) N.P. Taylor & Zappi -- accepted
  Harrisia bonplandii (J. Parm. & Pfeiff.) Britton & Rose -- not accepted
  Harrisia eriophora (Pfeiff.) Britton -- accepted
  Harrisia fragrans Small ex Britton & Rose -- accepted -- Caribbean applecactus
  Harrisia gracilis (Mill.) Britton -- accepted
  Harrisia hahniana (Backeb.) Kimnach & Hutchison -- not accepted
  Harrisia martinii (Labour.) Britton -- accepted -- mooncactus
  Harrisia pomanensis (F.A.C. Weber ex K. Schum.) Britton & Rose -- accepted -- applecactus
  Harrisia regelii (Weing.) Borg -- accepted
  Harrisia simpsonii Small ex Britton & Rose -- accepted -- Simpson's applecactus
  Harrisia tetracantha (Labour.) D.R. Hunt -- accepted
  Harrisia tortuosa (J. Forbes ex Otto & A. Dietr.) Britton & Rose -- accepted
  Haseltonia Backeb. -- not accepted
  Haseltonia columna-trajani (Karw.) Backeb. -- not accepted
  Hatiora Britton & Rose -- accepted
  Hatiora bambusoides (F.A.C. Weber) Britton & Rose -- not accepted
  Hatiora cylindrica Britton & Rose -- accepted
  Hatiora epiphylloides (Porto & Werderm.) Buxb. -- accepted
  Hatiora epiphylloides ssp. bradei (Porto & A. Cast.) Barthlott & N.P. Taylor -- accepted
  Hatiora epiphylloides ssp. epiphylloides (Porto & Werderm.) Buxb. -- accepted
  Hatiora gaertneri (Regel) Barthlott -- accepted
  Hatiora herminiae (Porto & A. Cast.) Barthlott -- accepted
  Hatiora rosea (Lagerh.) Barthlott -- accepted
  Hatiora salicornioides (Haw.) Britton & Rose -- accepted
  Heliabravoa Backeb. -- not accepted
  Heliabravoa chende (Rol.-Goss.) Backeb. -- not accepted
  Helianthocereus Backeb. -- not accepted
  Helianthocereus antezanae (Cárdenas) Backeb. -- not accepted
  Helianthocereus atacamensis (Phil.) Backeb. -- not accepted
  Helianthocereus bertramianus (Backeb.) Backeb. -- not accepted
  Helianthocereus conaconensis (Cárdenas) Backeb. -- not accepted
  Helianthocereus crassicaulis Backeb. -- not accepted
  Helianthocereus escayachensis (Cárdenas) Backeb. -- not accepted
  Helianthocereus grandiflorus (Britton & Rose) Backeb. -- not accepted
  Helianthocereus herzogianus (Cárdenas) Backeb. -- not accepted
  Helianthocereus huascha (F.A.C. Weber) Backeb. -- not accepted
  Helianthocereus hyalacanthus (Speg.) Backeb. -- not accepted
  Helianthocereus narvaecensis (Cárdenas) Backeb. -- not accepted
  Helianthocereus orurensis (Cárdenas) Backeb. -- not accepted
  Helianthocereus pasacanus (F.A.C. Weber ex Rümpler) Backeb. -- not accepted
  Helianthocereus pecheretianus var. viridior Backeb. -- not accepted
  Helianthocereus poco (Backeb.) Backeb. -- not accepted
  Helianthocereus pseudocandicans Backeb. -- not accepted
  Helianthocereus randallii (Cárdenas) Backeb. -- not accepted
  Helianthocereus tarijensis (Vaupel) Backeb. -- not accepted
  Heliocereus (A. Berger) Britton & Rose -- not accepted
  Heliocereus aurantiacus Kimnach -- not accepted
  Heliocereus aurantiacus var. blomianus Kimnach -- not accepted
  Heliocereus cinnabarinus (Weing.) Britton & Rose -- not accepted
  Heliocereus elegantissimus Britton & Rose -- not accepted
  Heliocereus heterodoxus Standl. & Steyerm. -- not accepted
  Heliocereus luzmariae Scheinvar -- not accepted
  Heliocereus schrankii (Zucc. ex Seitz) Britton & Rose -- not accepted
  Heliocereus speciosissimus (DC.) Y. Itô -- not accepted
  Heliocereus speciosus (Cav.) Britton & Rose -- not accepted
  Hertrichocereus Backeb. -- not accepted
  Hertrichocereus beneckei (Ehrenb.) Backeb. -- not accepted
  Hildewintera F. Ritter ex G.D. Rowley -- not accepted
  Hildewintera aureispina (F. Ritter) F. Ritter ex G.D. Rowley -- not accepted
  Hildewintera colademononis Diers & Krahn -- not accepted
  Homalocephala Britton & Rose -- not accepted
  Homalocephala texensis (Hopffer) Britton & Rose -- not accepted
  Horridocactus Backeb. -- not accepted
  Horridocactus aconcaguensis (F. Ritter) Backeb. -- not accepted
  Horridocactus andicola F. Ritter -- not accepted
  Horridocactus armatus (F. Ritter) Backeb. -- not accepted
  Horridocactus atroviridis (F. Ritter) Backeb. -- not accepted
  Horridocactus carrizalensis (F. Ritter) Backeb. -- not accepted
  Horridocactus choapensis (F. Ritter) Backeb. -- not accepted
  Horridocactus crispus (F. Ritter) Backeb. -- not accepted
  Horridocactus curvispinus (Bertero ex Colla) Backeb. -- not accepted
  Horridocactus echinus (F. Ritter) Backeb. -- not accepted
  Horridocactus eriosyzoides F. Ritter -- not accepted
  Horridocactus garaventai F. Ritter -- not accepted
  Horridocactus grandiflorus (F. Ritter) Backeb. -- not accepted
  Horridocactus heinrichianus Backeb. -- not accepted
  Horridocactus kesselringianus Dölz -- not accepted
  Horridocactus lissocarpus (F. Ritter) Backeb. -- not accepted
  Horridocactus marksianus (F. Ritter) Backeb. -- not accepted
  Horridocactus nigricans (Dietr. ex K. Schum.) Backeb. & Dölz -- not accepted
  Horridocactus robustus (F. Ritter) Y. Itô -- not accepted
  Horridocactus tuberisulcatus (Jacobi) Y. Itô -- not accepted
  Horridocactus vallenarensis (F. Ritter) Backeb. -- not accepted
  Hylocereus (A. Berger) Britton & Rose -- accepted -- nightblooming cactus
  Hylocereus antiguensis Britton & Rose -- not accepted
  Hylocereus calcaratus (F.A.C. Weber) Britton & Rose -- accepted
  Hylocereus compressus Y. Itô -- not accepted
  Hylocereus costaricensis (F.A.C. Weber) Britton & Rose -- accepted -- Costa Rica nightblooming cactus
  Hylocereus cubensis Britton & Rose -- not accepted
  Hylocereus escuintlensis Kimnach -- accepted
  Hylocereus estebanensis Backeb. -- not accepted
  Hylocereus extensus (Salm-Dyck ex DC.) Britton & Rose ex Rose -- accepted
  Hylocereus guatemalensis (Eichlam) Britton & Rose -- accepted
  Hylocereus lemairei (Hook.) Britton & Rose -- not accepted
  Hylocereus megalanthus (K. Schum. ex Vaupel) Ralf Bauer -- accepted
  Hylocereus minutiflorus Britton & Rose -- accepted
  Hylocereus monacanthus (Lem.) Britton & Rose -- accepted -- nightblooming cereus
  Hylocereus napoleonis (Graham) Britton & Rose -- not accepted
  Hylocereus ocamponis (Salm-Dyck) Britton & Rose -- accepted
  Hylocereus peruvianus Backeb. -- not accepted
  Hylocereus plumieri (Rol.-Goss.) Lourteig -- not accepted
  Hylocereus polyrhizus (F.A.C. Weber) Britton & Rose -- not accepted
  Hylocereus purpusii (Weing.) Britton & Rose -- not accepted
  Hylocereus scandens (Salm-Dyck) Backeb. -- not accepted
  Hylocereus setaceus (Salm-Dyck ex DC.) Ralf Bauer -- accepted
  Hylocereus stenopterus (F.A.C. Weber) Britton & Rose -- accepted
  Hylocereus triangularis (L.) Britton & Rose -- accepted
  Hylocereus tricae (D.R. Hunt) Ralf Bauer -- accepted
  Hylocereus trigonus (Haw.) Saff. -- not accepted -- strawberry-pear
  Hylocereus undatus (Haw.) Britton & Rose -- accepted -- Pitahaya orejona, nightblooming cactus
  Hylocereus venezuelensis Britton & Rose -- not accepted
  Hymenorebutia Fric ex Buining -- not accepted
  Hymenorebutia aurea (Britton & Rose) F. Ritter -- not accepted
  Hymenorebutia chlorogona (Wessner) F. Ritter -- not accepted
  Hymenorebutia chrysantha (Werderm.) F. Ritter -- not accepted
  Hymenorebutia cintiensis (Cárdenas) F. Ritter -- not accepted
  Hymenorebutia drijveriana (Backeb.) F. Ritter -- not accepted
  Hymenorebutia kuehnrichii (Fric) F. Ritter -- not accepted
  Hymenorebutia pusilla (F. Ritter) F. Ritter -- not accepted
  Hymenorebutia quinesensis (Rausch) F. Ritter -- not accepted
  Hymenorebutia tiegeliana (Wessner) F. Ritter -- not accepted
  Hymenorebutia torataensis F. Ritter -- not accepted
  Hymenorebutia torreana F. Ritter -- not accepted
  Islaya Backeb. -- not accepted
  Islaya bicolor Akers & Buining -- not accepted
  Islaya brevicylindrica Rauh & Backeb. -- not accepted
  Islaya copiapoides Rauh & Backeb. -- not accepted
  Islaya divaricatiflora F. Ritter -- not accepted
  Islaya grandiflorens Rauh & Backeb. -- not accepted
  Islaya grandis Rauh & Backeb. -- not accepted
  Islaya islayensis (C.F. Först.) Backeb. -- not accepted
  Islaya islayensis var. minor (Backeb.) F. Ritter -- not accepted
  Islaya krainziana F. Ritter -- not accepted
  Islaya laui (Lüthy) Faúndez & R. Kiesling -- not accepted
  Islaya maritima F. Ritter -- not accepted
  Islaya minor Backeb. -- not accepted
  Islaya minuscula F. Ritter -- not accepted
  Islaya molendensis (Vaupel) Backeb. -- not accepted
  Islaya omasensis Ostolaza & Mischler -- not accepted
  Islaya paucispinosa Rauh & Backeb. -- not accepted
  Islaya unguispina F. Ritter -- not accepted
  Jasminocereus Britton & Rose -- accepted
  Jasminocereus galapagensis (F.A.C. Weber) Britton & Rose -- not accepted
  Jasminocereus howellii E.Y. Dawson -- not accepted
  Jasminocereus sclerocarpus (K. Schum.) Backeb. -- not accepted
  Jasminocereus thouarsii (F.A.C. Weber) Backeb. -- accepted
  Kadenicarpus Doweld -- not accepted
  Kadenicarpus pseudomacrochele (Backeb.) Doweld -- not accepted
  Krainzia Backeb. -- not accepted
  Krainzia guelzowiana (Werderm.) Backeb. -- not accepted
  Krainzia longiflora (Britton & Rose) Backeb. -- not accepted
  Lasiocereus F. Ritter -- accepted
  Lasiocereus fulvus F. Ritter -- accepted
  Lasiocereus rupicola F. Ritter -- accepted
  Lemaireocereus Britton & Rose -- not accepted
  Lemaireocereus aragonii (F.A.C. Weber) Britton & Rose -- not accepted
  Lemaireocereus beneckei (Ehrenb.) Britton & Rose -- not accepted
  Lemaireocereus cartwrightianus Britton & Rose -- not accepted
  Lemaireocereus chende (Rol.-Goss.) Britton & Rose -- not accepted
  Lemaireocereus chichipe (Rol.-Goss.) Britton & Rose -- not accepted
  Lemaireocereus deficiens (Otto & A. Dietr.) Britton & Rose -- not accepted
  Lemaireocereus eichlamii Britton & Rose -- not accepted
  Lemaireocereus godingianus Britton & Rose -- not accepted
  Lemaireocereus griseus (Haw.) Britton & Rose -- not accepted
  Lemaireocereus hollianus (F.A.C. Weber) Britton & Rose -- not accepted
  Lemaireocereus hystrix (Haw.) Britton & Rose -- not accepted
  Lemaireocereus laetus (Kunth) Britton & Rose -- not accepted
  Lemaireocereus longispinus Britton & Rose -- not accepted
  Lemaireocereus martinezii J.G. Ortega -- not accepted
  Lemaireocereus mixtecensis (J.A. Purpus) Britton & Rose -- not accepted
  Lemaireocereus montanus Britton & Rose -- not accepted
  Lemaireocereus pruinosus (Otto ex Pfeiff.) Britton & Rose -- not accepted
  Lemaireocereus queretaroensis (F.A.C. Weber) Saff. -- not accepted
  Lemaireocereus quevedonis J.G. Ortega -- not accepted
  Lemaireocereus stellatus (Pfeiff.) Britton & Rose -- not accepted
  Lemaireocereus thurberi (Engelm.) Britton & Rose -- not accepted
  Lemaireocereus treleasei Rose -- not accepted
  Lemaireocereus weberi (J.M. Coult.) Britton & Rose -- not accepted
  Leocereus Britton & Rose -- accepted
  Leocereus bahiensis Britton & Rose -- accepted
  Leocereus bahiensis ssp. barreirensis (P.J. Braun & Esteves) P.J. Braun & Esteves -- not accepted
  Leocereus bahiensis ssp. exiguospinus (P.J. Braun & Esteves) P.J. Braun & Esteves -- not accepted
  Leocereus bahiensis ssp. robustispinus (P.J. Braun & Esteves) P.J. Braun & Esteves -- not accepted
  Leocereus bahiensis ssp. urandianus (P.J. Braun & Esteves) P.J. Braun & Esteves -- not accepted
  Leocereus bahiensis var. barreirensis P.J. Braun & Esteves -- not accepted
  Leocereus bahiensis var. exiguospinus P.J. Braun & Esteves -- not accepted
  Leocereus bahiensis var. robustispinus P.J. Braun & Esteves -- not accepted
  Leocereus glaziovii (K. Schum.) Britton & Rose -- not accepted
  Leocereus melanurus (K. Schum.) Britton & Rose -- not accepted
  Leocereus paulensis Speg. -- not accepted
  Leocereus urandianus F. Ritter -- not accepted
  Lepidocoryphantha Backeb. -- not accepted
  Lepidocoryphantha macromeris (Engelm.) Backeb. -- not accepted
  Lepidocoryphantha macromeris ssp. runyonii (Britton & Rose) Doweld -- not accepted
  Lepidocoryphantha runyonii (Britton & Rose) Backeb. -- not accepted
  Lepismium Pfeiff. -- accepted
  Lepismium aculeatum (F.A.C. Weber) Barthlott & N.P. Taylor -- not accepted
  Lepismium bolivianum (Britton) Barthlott -- not accepted
  Lepismium brevispinum Barthlott -- not accepted
  Lepismium chrysanthum (Loefgr.) Backeb. -- not accepted
  Lepismium crenatum (Britton) Barthlott -- not accepted
  Lepismium cruciforme (Vell.) Miq. -- accepted
  Lepismium dissimile G. Lindb. -- not accepted
  Lepismium epiphyllanthoides Backeb. -- not accepted
  Lepismium floccosum (Salm-Dyck ex Pfeiff.) Backeb. -- not accepted
  Lepismium gibberulum (F.A.C. Weber) Backeb. -- not accepted
  Lepismium grandiflorum (Haw.) Backeb. -- not accepted
  Lepismium houlletianum (Lem.) Barthlott -- accepted
  Lepismium ianthothele (Monv.) Barthlott -- not accepted
  Lepismium incachacanum (Cárdenas) Barthlott -- accepted
  Lepismium lineare (K. Schum.) Barthlott -- not accepted
  Lepismium lorentzianum (Griseb.) Barthlott -- accepted
  Lepismium lumbricoides (Lem.) Barthlott -- accepted
  Lepismium megalanthum (Loefgr.) Backeb. -- not accepted
  Lepismium micranthum (Vaupel) Barthlott -- not accepted
  Lepismium miyagawae (Barthlott & Rauh) Barthlott -- not accepted
  Lepismium monacanthum (Griseb.) Barthlott -- not accepted
  Lepismium neves-armondii (K. Schum.) Backeb. -- not accepted
  Lepismium pacheco-leonis (Loefgr.) Backeb. -- not accepted
  Lepismium paradoxum Salm-Dyck ex Pfeiff. -- not accepted
  Lepismium paranganiense (Cárdenas) Barthlott -- not accepted
  Lepismium pittieri (Britton & Rose) Backeb. -- not accepted
  Lepismium pulvinigerum (G. Lindb.) Backeb. -- not accepted
  Lepismium puniceodiscus var. chrysocarpum (Loefgr.) Backeb. -- not accepted
  Lepismium saxatile Friedrich, Redecker & Backeb. -- not accepted
  Lepismium trigonum (Pfeiff.) Backeb. -- not accepted
  Lepismium tucumanense (F.A.C. Weber) Backeb. -- not accepted
  Lepismium warmingianum (K. Schum.) Barthlott -- accepted
  Leptocereus (A. Berger) Britton & Rose -- accepted
  Leptocereus arboreus Britton & Rose -- accepted
  Leptocereus assurgens (C. Wright ex Griseb.) Britton & Rose -- accepted
  Leptocereus carinatus Areces -- accepted
  Leptocereus ekmanii (Werderm.) F.M. Knuth -- not accepted
  Leptocereus grantianus Britton -- accepted -- sebucan
  Leptocereus leonii Britton & Rose -- accepted
  Leptocereus maxonii Britton & Rose -- not accepted
  Leptocereus paniculatus (Lam.) D.R. Hunt -- accepted
  Leptocereus prostratus Britton & Rose -- not accepted
  Leptocereus quadricostatus (Bello) Britton & Rose -- accepted -- pitahaya
  Leptocereus santamarinae Areces -- not accepted
  Leptocereus scopulophilus Areces -- accepted
  Leptocereus sylvestris Britton & Rose -- accepted
  Leptocereus weingartianus (E. Hartmann in Dams) Britton & Rose -- accepted
  Leptocereus wrightii León -- accepted
  Leuchtenbergia Hook. -- accepted
  Leuchtenbergia principis Hook. -- accepted
  Leucostele Backeb. -- not accepted
  Leucostele rivieri Backeb. -- not accepted
  Lobeira Alexander -- not accepted
  Lobeira macdougallii Alexander -- not accepted
  Lobivia Britton & Rose -- not accepted
  Lobivia aculeata Buining -- not accepted
  Lobivia adpressispina F. Ritter -- not accepted
  Lobivia aguilarii R. Vásquez -- not accepted
  Lobivia akersii Rausch -- not accepted
  Lobivia allegraiana Backeb. -- not accepted
  Lobivia amblayensis Rausch -- not accepted
  Lobivia andalgalensis (F.A.C. Weber ex K. Schum.) Britton & Rose -- not accepted
  Lobivia arachnacantha Buining & F. Ritter -- not accepted
  Lobivia argentea Backeb. -- not accepted
  Lobivia atrovirens Backeb. -- not accepted
  Lobivia auranitida Wessner -- not accepted
  Lobivia aurantiaca Backeb. -- not accepted
  Lobivia aurea (Britton & Rose) Backeb. -- not accepted
  Lobivia aureolilacina Cárdenas -- not accepted
  Lobivia aureosenilis Kníze -- not accepted
  Lobivia backebergiana Y. Itô -- not accepted
  Lobivia backebergii (Werderm.) Backeb. -- not accepted
  Lobivia backebergii ssp. hertrichiana (Backeb.) Rausch ex G.D. Rowley -- not accepted
  Lobivia backebergii ssp. schieliana (Backeb.) Rausch ex G.D. Rowley -- not accepted
  Lobivia backebergii ssp. wrightiana (Backeb.) Rausch ex G.D. Rowley -- not accepted
  Lobivia backebergii ssp. zecheri (Rausch) Rausch ex G.D. Rowley -- not accepted
  Lobivia backebergii var. hertrichiana (Backeb.) Rausch -- not accepted
  Lobivia backebergii var. schieliana (Backeb.) Rausch -- not accepted
  Lobivia backebergii var. winteriana (F. Ritter) Rausch -- not accepted
  Lobivia backebergii var. wrightiana (Backeb.) Rausch -- not accepted
  Lobivia backebergii var. zecheri (Rausch) Rausch -- not accepted
  Lobivia binghamiana Backeb. -- not accepted
  Lobivia boliviensis Britton & Rose -- not accepted
  Lobivia brachyantha Wessner -- not accepted
  Lobivia breviflora Backeb. -- not accepted
  Lobivia bruchii Britton & Rose -- not accepted
  Lobivia brunneo-rosea Backeb. -- not accepted
  Lobivia buiningiana F. Ritter -- not accepted
  Lobivia cachensis (Speg.) Britton & Rose -- not accepted
  Lobivia caespitosa (J.A. Purpus) Britton & Rose -- not accepted
  Lobivia caineana Cárdenas -- not accepted
  Lobivia calorubra (Cárdenas) Rausch -- not accepted
  Lobivia camataquiensis Cárdenas -- not accepted
  Lobivia campicola F. Ritter -- not accepted
  Lobivia cardenasiana Rausch -- not accepted
  Lobivia cariquinensis Cárdenas -- not accepted
  Lobivia carminantha Backeb. -- not accepted
  Lobivia charazanensis Cárdenas -- not accepted
  Lobivia charcasina Cárdenas -- not accepted
  Lobivia chionanthus (Speg.) Britton & Rose -- not accepted
  Lobivia chorillosensis Rausch -- not accepted
  Lobivia chorrillosensis Rausch -- not accepted
  Lobivia chrysacantha (Backeb.) H.P. Kelsey & Dayton -- not accepted
  Lobivia chrysantha (Werderm.) Backeb. -- not accepted
  Lobivia chrysantha ssp. jajoiana (Backeb.) Rausch ex G.D. Rowley -- not accepted
  Lobivia chrysantha ssp. marsoneri (Werderm.) Rausch ex G.D. Rowley -- not accepted
  Lobivia chrysantha var. jajoiana (Backeb.) Rausch -- not accepted
  Lobivia chrysantha var. marsoneri (Werderm.) Rausch -- not accepted
  Lobivia chrysochete (Werderm.) Wessner -- not accepted
  Lobivia cinnabarina (Hook.) Britton & Rose -- not accepted
  Lobivia cinnabarina ssp. prestoana (Cárdenas) Rausch ex G.D. Rowley -- not accepted
  Lobivia cinnabarina ssp. taratensis (Cárdenas) G.D. Rowley -- not accepted
  Lobivia cintiensis Cárdenas -- not accepted
  Lobivia claeysiana Backeb. -- not accepted
  Lobivia corbula (Herrera) Britton & Rose -- not accepted
  Lobivia cornuta Rausch -- not accepted
  Lobivia crassicaulis R. Kiesling -- not accepted
  Lobivia cruciaureispina Kníze -- not accepted
  Lobivia culpinensis F. Ritter -- not accepted
  Lobivia cumingii (Hopffer) Britton & Rose -- not accepted
  Lobivia cylindracea Backeb. -- not accepted
  Lobivia cylindrica Backeb. -- not accepted
  Lobivia draxleriana Rausch -- not accepted
  Lobivia drijveriana Backeb. -- not accepted
  Lobivia drijveriana var. astranthema Backeb. -- not accepted
  Lobivia duursmaiana Backeb. -- not accepted
  Lobivia echinata Rausch -- not accepted
  Lobivia einsteinii (Fric) Rausch -- not accepted
  Lobivia elongata Backeb. -- not accepted
  Lobivia emmae Backeb. -- not accepted
  Lobivia euanthema Backeb. -- not accepted
  Lobivia eucaliptana Backeb. -- not accepted
  Lobivia famatimensis (Speg.) Britton & Rose -- not accepted
  Lobivia ferox Britton & Rose -- not accepted
  Lobivia formosa (Pfeiff.) Dodds -- not accepted
  Lobivia formosa ssp. bruchii (Britton & Rose) Rausch -- not accepted
  Lobivia formosa ssp. grandis (Britton & Rose) Rausch -- not accepted
  Lobivia formosa ssp. tarijensis (Vaupel) Rausch -- not accepted
  Lobivia formosa var. bruchii (Britton & Rose) Rausch -- not accepted
  Lobivia formosa var. grandis (Britton & Rose) Rausch -- not accepted
  Lobivia fricii Rausch -- not accepted
  Lobivia glauca Rausch -- not accepted
  Lobivia glaucescens F. Ritter -- not accepted
  Lobivia grandiflora Werderm. -- not accepted
  Lobivia grandiflora Britton & Rose -- not accepted
  Lobivia grandis Britton & Rose -- not accepted
  Lobivia haageana Backeb. -- not accepted
  Lobivia haematantha (Speg.) Britton & Rose -- not accepted
  Lobivia haematantha ssp. chorillosensis (Rausch) G.D. Rowley -- not accepted
  Lobivia haematantha ssp. densispina (Werderm.) Rausch ex G.D. Rowley -- not accepted
  Lobivia haematantha ssp. kuehnrichii (Fric) G.D. Rowley -- not accepted
  Lobivia haematantha var. chorrillosensis (Rausch) Rausch -- not accepted
  Lobivia haematantha var. densispina (Werderm.) Rausch -- not accepted
  Lobivia haematantha var. kuehnrichii (Fric) Rausch -- not accepted
  Lobivia hastifera Werderm. -- not accepted
  Lobivia hermanniana Backeb. -- not accepted
  Lobivia hertrichiana Backeb. -- not accepted
  Lobivia higginsiana Backeb. -- not accepted
  Lobivia hoffmanniana Backeb. -- not accepted
  Lobivia horrida F. Ritter -- not accepted
  Lobivia hualfinensis Rausch -- not accepted
  Lobivia hualfinensis var. fechseri Rausch -- not accepted
  Lobivia huascha (F.A.C. Weber) W.T. Marshall -- not accepted
  Lobivia huascha var. robusta Rausch -- not accepted
  Lobivia huilcanota Rauh & Backeb. -- not accepted
  Lobivia hystrix F. Ritter -- not accepted
  Lobivia incaica Backeb. -- not accepted
  Lobivia incuiensis Rauh & Backeb. -- not accepted
  Lobivia intermedia Rausch -- not accepted
  Lobivia iridescens Backeb. -- not accepted
  Lobivia jajoiana Backeb. -- not accepted
  Lobivia johnsoniana Backeb. -- not accepted
  Lobivia kieslingii Rausch -- not accepted
  Lobivia kuehnrichii Fric -- not accepted
  Lobivia kupperiana Backeb. -- not accepted
  Lobivia larae Cárdenas -- not accepted
  Lobivia lateritia (Gürke) Britton & Rose -- not accepted
  Lobivia laui Donald -- not accepted
  Lobivia lauramarca Rauh & Backeb. -- not accepted
  Lobivia leucorhodon Backeb. -- not accepted
  Lobivia leucoviolacea Backeb. -- not accepted
  Lobivia longispina Britton & Rose -- not accepted
  Lobivia marsoneri (Werderm.) Backeb. -- not accepted
  Lobivia miniatiflora F. Ritter -- not accepted
  Lobivia minuta F. Ritter -- not accepted
  Lobivia mirabunda Backeb. -- not accepted
  Lobivia mistiensis (Werderm. & Backeb.) Backeb. -- not accepted
  Lobivia muhriae Backeb. -- not accepted
  Lobivia multicostata Backeb. -- not accepted
  Lobivia nealeana Backeb. -- not accepted
  Lobivia neohaageana Backeb. -- not accepted
  Lobivia nigricans Wessner -- not accepted
  Lobivia nigrispina Backeb. -- not accepted
  Lobivia nigrostoma Kreuz. & Buining -- not accepted
  Lobivia oligotricha Cárdenas -- not accepted
  Lobivia orurensis Backeb. -- not accepted
  Lobivia oxyalabastra Cárdenas & Rausch -- not accepted
  Lobivia pachyacantha Y. Itô -- not accepted
  Lobivia pampana Britton & Rose -- not accepted
  Lobivia peclardiana Krainz -- not accepted
  Lobivia peclardiana var. albiflora Krainz -- not accepted
  Lobivia pectinata Backeb. -- not accepted
  Lobivia pentlandii (Hook.) Britton & Rose -- not accepted
  Lobivia planiceps Backeb. -- not accepted
  Lobivia pojoensis Rausch -- not accepted
  Lobivia polaskiana Backeb. -- not accepted
  Lobivia polycephala Backeb. -- not accepted
  Lobivia potosina (Werderm.) Friedrich -- not accepted
  Lobivia prestoana Cárdenas -- not accepted
  Lobivia pseudocachensis Backeb. -- not accepted
  Lobivia pseudocariquinensis Cárdenas -- not accepted
  Lobivia pugionacantha (Rose & Boed.) Backeb. -- not accepted
  Lobivia purpureominiata F. Ritter -- not accepted
  Lobivia pusilla F. Ritter -- not accepted
  Lobivia quiabayensis Rausch -- not accepted
  Lobivia raphidacantha Backeb. -- not accepted
  Lobivia rauschii Zecher -- not accepted
  Lobivia rebutioides Backeb. -- not accepted
  Lobivia ritteri Wessner -- not accepted
  Lobivia rosarioana Rausch -- not accepted
  Lobivia rossii (Boed.) Harden -- not accepted
  Lobivia rubescens Backeb. -- not accepted
  Lobivia salitrensis Rausch -- not accepted
  Lobivia salitrensis var. flexuosa Rausch -- not accepted
  Lobivia saltensis (Speg.) Britton & Rose -- not accepted
  Lobivia sanguiniflora Backeb. -- not accepted
  Lobivia schieliana Backeb. -- not accepted
  Lobivia schneideriana Backeb. -- not accepted
  Lobivia schreiteri A. Cast. -- not accepted
  Lobivia scoparia (Werderm.) Harden -- not accepted
  Lobivia scopulina Backeb. -- not accepted
  Lobivia shaferi Britton & Rose -- not accepted
  Lobivia sicuaniensis Rausch -- not accepted
  Lobivia steinmannii (Solms) Backeb. -- not accepted
  Lobivia stilowiana Backeb. -- not accepted
  Lobivia taratensis Cárdenas -- not accepted
  Lobivia tegeleriana Backeb. -- not accepted
  Lobivia thionantha (Speg.) Britton & Rose -- not accepted
  Lobivia tiegeliana Wessner -- not accepted
  Lobivia titicacensis Cárdenas -- not accepted
  Lobivia tuberculosa F. Ritter -- not accepted
  Lobivia uitewaaleana Buining -- not accepted
  Lobivia varians Backeb. -- not accepted
  Lobivia variispina F. Ritter -- not accepted
  Lobivia versicolor Rausch -- not accepted
  Lobivia vilcabambae F. Ritter -- not accepted
  Lobivia walteri R. Kiesling -- not accepted
  Lobivia walterspielii Boed. -- not accepted
  Lobivia wegheiana Backeb. -- not accepted
  Lobivia westii Hutchison -- not accepted
  Lobivia winteriana F. Ritter -- not accepted
  Lobivia wrightiana Backeb. -- not accepted
  Lobivia wrightiana var. winteriana Backeb. -- not accepted
  Lobivia zencheri Rausch -- not accepted
  Lobivia zudanensis Cárdenas -- not accepted
  Lophocereus (Engelm.) Britton & Rose -- not accepted
  Lophocereus gatesii M.E. Jones -- not accepted
  Lophocereus mieckleyanus (Weing.) Backeb. -- not accepted
  Lophocereus sargentianus (Orcutt) Britton & Rose -- not accepted
  Lophocereus schottii (Engelm.) Britton & Rose -- not accepted -- Senita
  Lophophora J.M. Coult. -- accepted
  Lophophora diffusa (Croizat) Bravo -- accepted
  Lophophora fricii Haberm. -- accepted
  Lophophora williamsii (Lem. ex Salm-Dyck) J.M. Coult. -- accepted -- Peyote, peyote
  Lophophora williamsii var. echinata (Croizat) Bravo -- not accepted
  Loxanthocereus Backeb. -- not accepted
  Loxanthocereus acanthurus (Vaupel) Backeb. -- not accepted
  Loxanthocereus aticensis Rauh & Backeb. -- not accepted
  Loxanthocereus bicolor F. Ritter -- not accepted
  Loxanthocereus brevispinus Rauh & Backeb. -- not accepted
  Loxanthocereus camanaensis Rauh & Backeb. -- not accepted
  Loxanthocereus canetensis Rauh & Backeb. -- not accepted
  Loxanthocereus convergens F. Ritter -- not accepted
  Loxanthocereus cullmannianus Backeb. -- not accepted
  Loxanthocereus deserticola F. Ritter -- not accepted
  Loxanthocereus eremiticus F. Ritter -- not accepted
  Loxanthocereus erigens Rauh & Backeb. -- not accepted
  Loxanthocereus eriotrichus (Werderm. & Backeb.) Backeb. -- not accepted
  Loxanthocereus eulalianus Rauh & Backeb. -- not accepted
  Loxanthocereus faustianus (Backeb.) Backeb. -- not accepted
  Loxanthocereus ferrugineus Rauh & Backeb. -- not accepted
  Loxanthocereus gracilispinus Rauh & Backeb. -- not accepted
  Loxanthocereus granditessellatus Rauh & Backeb. -- not accepted
  Loxanthocereus hoffmannii F. Ritter -- not accepted
  Loxanthocereus hystrix Rauh & Backeb. -- not accepted
  Loxanthocereus jajoianus (Backeb.) Backeb. -- not accepted
  Loxanthocereus keller-badensis Backeb. & Voll -- not accepted
  Loxanthocereus montanus F. Ritter -- not accepted
  Loxanthocereus multifloccosus Rauh & Backeb. -- not accepted
  Loxanthocereus nanus Backeb. -- not accepted
  Loxanthocereus neglectus F. Ritter -- not accepted
  Loxanthocereus neglectus var. chimbotensis F. Ritter -- not accepted
  Loxanthocereus otuscensis F. Ritter -- not accepted
  Loxanthocereus pacaranensis F. Ritter -- not accepted
  Loxanthocereus pachycladus Rauh & Backeb. -- not accepted
  Loxanthocereus parvitesselatus F. Ritter -- not accepted
  Loxanthocereus peculiaris Rauh & Backeb. -- not accepted
  Loxanthocereus piscoensis Rauh & Backeb. -- not accepted
  Loxanthocereus pullatus Rauh & Backeb. -- not accepted
  Loxanthocereus puquiensis F. Ritter -- not accepted
  Loxanthocereus riomajensis Rauh & Backeb. -- not accepted
  Loxanthocereus sextonianus (Backeb.) Backeb. -- not accepted
  Loxanthocereus splendens Backeb. -- not accepted
  Loxanthocereus sulcifer Rauh & Backeb. -- not accepted
  Loxanthocereus trujilloensis F. Ritter -- not accepted
  Loxanthocereus variabilis F. Ritter -- not accepted
  Loxanthocereus xylorhizus F. Ritter -- not accepted
  Loxanthocereus yauyosensis F. Ritter -- not accepted
  Lymanbensonia Kimnach -- not accepted
  Lymanbensonia micrantha (Vaupel) Kimnach -- not accepted
  Machaerocereus Britton & Rose -- not accepted
  Machaerocereus eruca (Brandegee) Britton & Rose -- not accepted
  Machaerocereus gummosus (Engelm.) Britton & Rose -- not accepted
  Maihuenia (Phil. ex F.A.C. Weber) K. Schum. -- accepted
  Maihuenia albolanata F. Ritter -- not accepted
  Maihuenia brachydelphys K. Schum. -- not accepted
  Maihuenia cumulata F. Ritter -- not accepted
  Maihuenia latispina F. Ritter -- not accepted
  Maihuenia patagonica (Phil) Britton & Rose -- accepted
  Maihuenia philippii F.A.C. Weber -- not accepted
  Maihuenia poeppigii (Otto ex Pfeiff.) F.A.C. Weber ex K. Schum. -- accepted
  Maihuenia valentinii Speg. -- not accepted
  Maihueniopsis Speg. -- accepted
  Maihueniopsis albomarginata F. Ritter -- not accepted
  Maihueniopsis archiconoidea F. Ritter -- accepted
  Maihueniopsis atacamensis (Phil.) F. Ritter -- not accepted
  Maihueniopsis boliviana (Salm-Dyck) R. Kiesling -- not accepted
  Maihueniopsis bonnieae (D.J. Ferguson & R. Kiesling) E.F. Anderson -- not accepted
  Maihueniopsis camachoi (Espinosa) F. Ritter -- not accepted
  Maihueniopsis clavarioides (Otto ex Pfeiff.) E.F. Anderson -- accepted
  Maihueniopsis colorea (F. Ritter) F. Ritter -- not accepted
  Maihueniopsis conoidea (F. Ritter ex Backeb.) F. Ritter -- accepted
  Maihueniopsis crassispina F. Ritter -- not accepted
  Maihueniopsis darwinii (Hensl.) F. Ritter -- accepted
  Maihueniopsis domeykoensis F. Ritter -- not accepted
  Maihueniopsis glomerata (Haw.) R. Kiesling -- accepted
  Maihueniopsis grandiflora F. Ritter -- not accepted
  Maihueniopsis hypogaea (Werderm.) F. Ritter -- accepted
  Maihueniopsis leoncito (Werderm.) F. Ritter -- not accepted
  Maihueniopsis leptoclada F. Ritter -- not accepted
  Maihueniopsis mandragora (Backeb.) F. Ritter -- not accepted
  Maihueniopsis minuta (Backeb.) R. Kiesling -- accepted
  Maihueniopsis molfinoi Speg. -- not accepted
  Maihueniopsis molinensis (Speg.) F. Ritter -- not accepted
  Maihueniopsis neuquensis (Borg) F. Ritter -- not accepted
  Maihueniopsis nigrispina (K. Schum.) R. Kiesling -- not accepted
  Maihueniopsis ovallei (J. Rémy) F. Ritter -- not accepted
  Maihueniopsis ovata (Pfeiff.) F. Ritter -- not accepted
  Maihueniopsis pentlandii (Salm-Dyck) R. Kiesling -- not accepted
  Maihueniopsis rahmeri (Phil.) F. Ritter -- not accepted
  Maihueniopsis subterranea (R.E. Fr.) E.F. Anderson -- accepted
  Maihueniopsis tarapacana (Phil.) F. Ritter -- not accepted
  Malacocarpus Salm-Dyck -- not accepted
  Malacocarpus heptacanthus Barb. Rodr. -- not accepted
  Mamillopsis (E. Morren) F.A.C. Weber ex Britton & Rose -- not accepted
  Mamillopsis diguetii (F.A.C. Weber) Britton & Rose -- not accepted
  Mamillopsis senilis (Lodd. ex Salm-Dyck) F.A.C. Weber ex Britton & Rose -- not accepted
  Mammillaria Haw. -- accepted -- pincushion cactus, globe cactus, fishhook cactus
  Mammillaria aggregata Engelm. -- not accepted
  Mammillaria alamensis R.T. Craig -- not accepted
  Mammillaria albata Repp. -- not accepted
  Mammillaria albescens Tiegel -- not accepted
  Mammillaria albiarmata Boed. -- not accepted
  Mammillaria albicans (Britton & Rose) A. Berger -- accepted
  Mammillaria albicans ssp. albicans (Britton & Rose) A. Berger -- accepted
  Mammillaria albicans ssp. fraileana (Britton & Rose) D.R. Hunt -- accepted
  Mammillaria albicolumnaria (Hester) D. Weniger -- not accepted
  Mammillaria albicoma Boed. -- accepted
  Mammillaria albidula Backeb. -- not accepted
  Mammillaria albiflora Backeb. -- accepted
  Mammillaria albilanata Backeb. -- accepted
  Mammillaria albilanata ssp. albilanata Backeb. -- accepted
  Mammillaria albilanata ssp. oaxacana D.R. Hunt -- accepted
  Mammillaria albilanata ssp. reppenhagenii (D.R. Hunt) D.R. Hunt -- accepted
  Mammillaria albilanata ssp. tegelbergiana (G.E. Linds.) D.R. Hunt -- accepted
  Mammillaria albrechtiana Wohlschl. -- not accepted
  Mammillaria alversonii (J.M. Coult.) J.M. Coult. ex Zeiss. -- not accepted
  Mammillaria amajacensis Brachet & M. Lacoste -- not accepted
  Mammillaria angelensis R.T. Craig -- not accepted
  Mammillaria anniana Glass & R.A. Foster -- accepted
  Mammillaria antesbergeriana A.B. Lau -- not accepted
  Mammillaria apamensis Repp. -- not accepted
  Mammillaria apozolensis Repp. -- not accepted
  Mammillaria applanata Engelm. -- not accepted
  Mammillaria arida Rose -- not accepted
  Mammillaria armatissima R.T. Craig -- not accepted
  Mammillaria armillata K. Brandegee -- accepted
  Mammillaria arroyensis Repp. -- not accepted
  Mammillaria ascensionis Repp. -- not accepted
  Mammillaria atroflorens Backeb. -- not accepted
  Mammillaria aureilanata Backeb. -- accepted
  Mammillaria aureispina (A.B. Lau) Repp. -- not accepted
  Mammillaria aureoviridis Heinrich -- not accepted
  Mammillaria auriareolis Tiegel -- not accepted
  Mammillaria auricantha R.T. Craig -- not accepted
  Mammillaria aurihamata Boed. -- not accepted
  Mammillaria aurisaeta Backeb. -- not accepted
  Mammillaria auritricha R.T. Craig -- not accepted
  Mammillaria avila-camachoi Shurly ex Backeb. -- not accepted
  Mammillaria backebergiana Buchenau -- accepted
  Mammillaria backebergiana ssp. backebergiana Buchenau -- accepted
  Mammillaria backebergiana ssp. ernestii (Fittkau) D.R. Hunt -- accepted
  Mammillaria balsasoides R.T. Craig -- not accepted
  Mammillaria bambusiphila Repp. -- not accepted
  Mammillaria barbata Engelm. -- accepted
  Mammillaria barkeri Shurly ex Backeb. -- not accepted
  Mammillaria baumii Boed. -- accepted
  Mammillaria baxteriana (H.E. Gates) Boed. -- not accepted
  Mammillaria beiselii Diers -- not accepted
  Mammillaria bella Backeb. -- not accepted -- Biznaga bella
  Mammillaria bellacantha R.T. Craig -- not accepted
  Mammillaria bellisiana R.T. Craig -- not accepted
  Mammillaria beneckei Ehrenb. -- accepted
  Mammillaria berkiana A.B. Lau -- accepted
  Mammillaria bernalensis Repp. -- not accepted
  Mammillaria blossfeldiana Boed. -- accepted
  Mammillaria bocasana Poselg. -- accepted
  Mammillaria bocasana ssp. eschauzieri (J.M. Coult.) W.A. Fitz Maur. & B. Fitz Maur. -- not accepted
  Mammillaria bocensis R.T. Craig -- accepted
  Mammillaria boelderliana Wohlschl. -- accepted
  Mammillaria bombycina Quehl -- accepted
  Mammillaria bombycina ssp. bombycina Quehl -- accepted
  Mammillaria bombycina ssp. perezdelarosae (Bravo & Scheinvar) D.R. Hunt -- accepted
  Mammillaria bonavitii Repp. -- not accepted
  Mammillaria boolii G.E. Linds. -- accepted
  Mammillaria brachytrichion Lüthy -- not accepted
  Mammillaria brandegeei (J.M. Coult.) Engelm. ex K. Brandegee -- accepted
  Mammillaria brandegeei ssp. brandegeei (J.M. Coult.) Engelm. ex K. Brandegee -- accepted
  Mammillaria brandegeei ssp. gabbii (J.M. Coult.) D.R. Hunt -- accepted
  Mammillaria brandegeei ssp. glareosa (Boed.) D.R. Hunt -- accepted
  Mammillaria brauneana Boed. -- not accepted
  Mammillaria bravoae R.T. Craig -- not accepted
  Mammillaria brevicrinita Repp. -- not accepted
  Mammillaria bucareliensis R.T. Craig -- not accepted
  Mammillaria buchenaui Backeb. -- not accepted
  Mammillaria bullardiana (H.E. Gates) Boed. -- not accepted
  Mammillaria buxbaumeriana Repp. -- not accepted
  Mammillaria cadereytensis R.T. Craig -- not accepted
  Mammillaria caerulea R.T. Craig -- not accepted
  Mammillaria calacantha Tiegel -- not accepted
  Mammillaria calleana Backeb. -- not accepted
  Mammillaria camptotricha Dams -- not accepted
  Mammillaria candida Scheidw. -- accepted
  Mammillaria canelensis R.T. Craig -- not accepted
  Mammillaria capensis (H.E. Gates) R.T. Craig -- accepted
  Mammillaria carmenae Castañeda -- accepted
  Mammillaria carnea Zucc. ex Pfeiff. -- accepted
  Mammillaria carretii Rebut ex K. Schum. -- accepted
  Mammillaria casoi Bravo -- not accepted
  Mammillaria centralifera Repp. -- not accepted
  Mammillaria centraliplumosa Fittkau -- not accepted
  Mammillaria cerralboa (Britton & Rose) Orcutt -- accepted
  Mammillaria chapinensis Eichlam & Quehl -- not accepted
  Mammillaria chiapensis Repp. -- not accepted
  Mammillaria chica Repp. -- not accepted
  Mammillaria chionocephala J.A. Purpus -- not accepted
  Mammillaria clavata Scheidw. -- not accepted
  Mammillaria claviformis Repp. -- not accepted
  Mammillaria coahuilensis (Boed.) Moran -- accepted
  Mammillaria collina J.A. Purpus -- not accepted
  Mammillaria collinsii (Britton & Rose) Orcutt -- not accepted
  Mammillaria colonensis R.T. Craig -- not accepted
  Mammillaria columbiana Salm-Dyck -- accepted
  Mammillaria columbiana ssp. columbiana Salm-Dyck -- accepted
  Mammillaria columbiana ssp. yucatanensis (Britton & Rose) D.R. Hunt -- accepted
  Mammillaria compacta Engelm. -- not accepted
  Mammillaria compacticaulis Repp. -- not accepted
  Mammillaria compressa DC. -- accepted
  Mammillaria compressa ssp. centralifera (Repp.) D.R. Hunt -- accepted
  Mammillaria compressa ssp. compressa DC. -- accepted
  Mammillaria confusa (Britton & Rose) Orcutt -- not accepted
  Mammillaria conoidea DC. -- not accepted
  Mammillaria conspicua J.A. Purpus -- not accepted
  Mammillaria cowperae Shurly -- not accepted
  Mammillaria craigii G.E. Linds. -- not accepted
  Mammillaria crassa Repp. -- not accepted
  Mammillaria crassimammillis Repp. -- not accepted
  Mammillaria crassior Repp. -- not accepted
  Mammillaria crinita DC. -- accepted
  Mammillaria crinita ssp. crinita DC. -- accepted
  Mammillaria crinita ssp. leucantha (Boed.) D.R. Hunt -- accepted
  Mammillaria crinita ssp. wildii (A. Dietr.) D.R. Hunt -- accepted
  Mammillaria crucigera Mart. -- accepted
  Mammillaria crucigera ssp. crucigera Mart. -- accepted
  Mammillaria crucigera ssp. tlalocii (Repp.) D.R. Hunt -- accepted
  Mammillaria dasyacantha Engelm. -- not accepted
  Mammillaria dawsonii (Houghton) R.T. Craig -- not accepted
  Mammillaria decipiens Scheidw. -- accepted
  Mammillaria decipiens ssp. albescens (Tiegel) D.R. Hunt -- accepted
  Mammillaria decipiens ssp. decipiens Scheidw. -- accepted
  Mammillaria decipiens var. camptotricha (Dams) D.R. Hunt -- not accepted
  Mammillaria deherdtiana Farwig -- accepted
  Mammillaria deherdtiana ssp. deherdtiana Farwig -- accepted
  Mammillaria deherdtiana ssp. dodsonii (Bravo) D.R. Hunt -- accepted
  Mammillaria delaetiana Quehl -- not accepted
  Mammillaria densispina (J.M. Coult.) Orcutt -- accepted
  Mammillaria difficilis Quehl -- not accepted
  Mammillaria diguetii (F.A.C. Weber) H.P. Kelsey & Dayton -- not accepted
  Mammillaria dioica K. Brandegee -- accepted -- Biznaga llavina, strawberry cactus
  Mammillaria dioica ssp. angelensis (R.T. Craig) R.T. Craig -- accepted
  Mammillaria dioica ssp. dioica K. Brandegee -- accepted
  Mammillaria dioica ssp. estebanensis (G.E. Linds.) D.R. Hunt -- accepted
  Mammillaria dioica var. incerta (Parish) Munz -- not accepted
  Mammillaria discolor Haw. -- accepted
  Mammillaria dixanthocentron Backeb. ex Mottram -- accepted
  Mammillaria dodsonii Bravo -- not accepted
  Mammillaria donatii Berge ex K. Schum. -- not accepted
  Mammillaria droegeana (K. Schum.) Borg -- not accepted
  Mammillaria droegeana Hildm. ex Schelle -- not accepted
  Mammillaria dumetorum J.A. Purpus -- not accepted
  Mammillaria duncanii (Hester) D. Weniger -- not accepted
  Mammillaria duoformis R.T. Craig & E.Y. Dawson -- accepted
  Mammillaria durangensis Runge ex K. Schum. -- not accepted
  Mammillaria durangicola Repp. -- not accepted
  Mammillaria durispina Boed. -- not accepted
  Mammillaria duwei Rogoz. & P.J. Braun -- accepted
  Mammillaria ebenacantha Shurly -- not accepted
  Mammillaria echinoidea Quehl -- not accepted
  Mammillaria echinus Engelm. -- not accepted
  Mammillaria egregia Backeb. -- not accepted
  Mammillaria eichlamii Quehl -- accepted
  Mammillaria ekmanii Werderm. -- accepted
  Mammillaria elegans DC. -- not accepted
  Mammillaria elephantidens var. bumamma (Ehrenb.) K. Schum. -- not accepted
  Mammillaria elongata DC. -- accepted
  Mammillaria elongata ssp. echinaria (DC.) D.R. Hunt -- accepted
  Mammillaria elongata ssp. elongata DC. -- accepted
  Mammillaria emskoetteriana Quehl -- not accepted
  Mammillaria erectohamata Boed. -- not accepted
  Mammillaria eriacantha Link & Otto ex Pfeiff. -- accepted
  Mammillaria ernestii Fittkau -- not accepted
  Mammillaria erythra Repp. -- not accepted
  Mammillaria erythrocalix Buchenau -- not accepted
  Mammillaria erythrosperma Boed. -- accepted
  Mammillaria esseriana Boed. -- not accepted
  Mammillaria estanzuelensis A. Berger -- not accepted
  Mammillaria estebanensis G.E. Linds. -- not accepted
  Mammillaria evermanniana (Britton & Rose) Orcutt -- accepted
  Mammillaria fasciculata Engelm. -- not accepted
  Mammillaria fasciculata Engelm. ex B.D. Jacks. -- not accepted
  Mammillaria felipensis Repp. -- not accepted
  Mammillaria fera-rubra F. Schmoll ex R.T. Craig -- not accepted
  Mammillaria fissurata Engelm. -- not accepted
  Mammillaria fittkaui Glass & R.A. Foster -- accepted
  Mammillaria fittkaui ssp. fittkaui Glass & R.A. Foster -- accepted
  Mammillaria fittkaui ssp. limonensis (Repp.) Lüthy -- accepted
  Mammillaria flavicentra Backeb. ex Mottram -- accepted
  Mammillaria flavihamata Backeb. -- not accepted
  Mammillaria formosa Scheidw. -- accepted
  Mammillaria formosa ssp. chionocephala (J.A. Purpus) D.R. Hunt -- accepted
  Mammillaria formosa ssp. formosa Scheidw. -- accepted
  Mammillaria formosa ssp. microthele (Muehlenpf.) D.R. Hunt -- accepted
  Mammillaria formosa ssp. pseudocrucigera (R.T. Craig) D.R. Hunt -- accepted
  Mammillaria fraileana (Britton & Rose) Backeb. -- not accepted
  Mammillaria freudenbergii Repp. -- not accepted
  Mammillaria fuauxiana Backeb. -- not accepted
  Mammillaria gabbii (J.M. Coult.) Engelm. ex K. Brandegee -- not accepted
  Mammillaria garessii Cowper -- not accepted
  Mammillaria gasseriana Boed. -- accepted
  Mammillaria gasterantha Repp. -- not accepted
  Mammillaria gatesii M.E. Jones -- not accepted
  Mammillaria gaumeri Orcutt -- not accepted
  Mammillaria geminispina Haw. -- accepted
  Mammillaria geminispina ssp. geminispina Haw. -- accepted
  Mammillaria geminispina ssp. leucocentra (A. Berg) D.R. Hunt -- accepted
  Mammillaria gigantea Hildm. ex K. Schum. -- accepted
  Mammillaria gilensis Boed. -- not accepted
  Mammillaria giselae Mart.-Aval. & Glass -- not accepted
  Mammillaria glanduligera Otto & A. Dietr. -- not accepted
  Mammillaria glassii R.A. Foster -- accepted
  Mammillaria glassii var. ascensionis (Repp.) Glass & R.A. Foster -- not accepted
  Mammillaria glochidiata Mart. -- accepted
  Mammillaria glomerata DC. -- not accepted
  Mammillaria goldii Glass & R.A. Foster -- not accepted
  Mammillaria gracilis Pfeiff. -- not accepted
  Mammillaria grahamii Engelm. -- accepted -- Graham's pincushion cactus, Graham's nipple cactus
  Mammillaria grahamii ssp. grahamii Engelm. -- accepted
  Mammillaria grahamii ssp. sheldonii (Britton & Rose) D.R. Hunt -- accepted
  Mammillaria grusonii Runge -- accepted
  Mammillaria gueldemanniana Backeb. -- not accepted
  Mammillaria guelzowiana Werderm. -- accepted
  Mammillaria guerreronis (Bravo) Boed. -- accepted
  Mammillaria guiengolensis Bravo & T. MacDoug. -- not accepted
  Mammillaria guillauminiana Backeb. -- accepted
  Mammillaria guirocobensis R.T. Craig -- not accepted
  Mammillaria gummifera Engelm. -- not accepted -- Biznaga lechosa
  Mammillaria gummifera var. applanata (Engelm.) L.D. Benson -- not accepted
  Mammillaria gummifera var. hemisphaerica (Engelm.) L.D. Benson -- not accepted
  Mammillaria gummifera var. macdougalii (Rose) L.D. Benson -- not accepted
  Mammillaria gummifera var. meiacantha (Engelm.) L.D. Benson -- not accepted
  Mammillaria haageana Pfeiff. -- accepted
  Mammillaria haageana var. schmollii (R.T. Craig) D.R. Hunt -- not accepted
  Mammillaria haasii J. Meyrán -- not accepted
  Mammillaria hahniana Werderm. -- accepted
  Mammillaria halbingeri Boed. -- accepted
  Mammillaria halei Brandegee -- accepted
  Mammillaria hamiltonhoytiae (Bravo) Werderm. -- not accepted
  Mammillaria hamuligera Quehl -- not accepted
  Mammillaria heidiae Krainz -- not accepted
  Mammillaria hemisphaerica Engelm. -- not accepted
  Mammillaria hennisii Boed. -- not accepted
  Mammillaria hernandezii Glass & R.A. Foster -- accepted
  Mammillaria herrerae Werderm. -- accepted
  Mammillaria hertrichiana R.T. Craig -- not accepted
  Mammillaria hesteri (Y. Wright) D. Weniger -- not accepted
  Mammillaria heyderi Muehlenpf. -- accepted -- Heyder's pincushion cactus, Biznaga china, little nipple cactus
  Mammillaria heyderi ssp. coahuilensis (Boed.) Lüthy -- not accepted
  Mammillaria heyderi ssp. gaumeri (Orcutt) D.R. Hunt -- accepted
  Mammillaria heyderi ssp. hemisphaerica (Engelm.) D.R. Hunt -- accepted
  Mammillaria heyderi ssp. heyderi Muehlenpf. -- accepted
  Mammillaria heyderi ssp. macdougalii (Rose) D.R. Hunt -- accepted
  Mammillaria heyderi var. applanata (Engelm.) Engelm. -- not accepted
  Mammillaria heyderi var. gummifera (Engelm.) L.D. Benson -- not accepted
  Mammillaria hidalgensis J.A. Purpus -- not accepted
  Mammillaria hirsuta Boed. -- not accepted
  Mammillaria hoffmannseggii Hoffmanns. -- not accepted
  Mammillaria huajuapensis Bravo -- not accepted
  Mammillaria hubertmulleri Repp. -- not accepted
  Mammillaria huiguerensis Repp. -- not accepted
  Mammillaria huitzilopochtli D.R. Hunt -- accepted
  Mammillaria huitzilopochtli ssp. huitzilopochtli D.R. Hunt -- accepted
  Mammillaria huitzilopochtli ssp. niduliformis (A.B. Lau) Pilbeam -- accepted
  Mammillaria humboldtii Ehrenb. -- accepted
  Mammillaria hutchisoniana (H.E. Gates) Boed. -- accepted
  Mammillaria hutchisoniana ssp. hutchisoniana (H.E. Gates) Boed. -- accepted
  Mammillaria hutchisoniana ssp. louisae (G.E. Linds.) D.R. Hunt -- accepted
  Mammillaria ignota Repp. -- not accepted
  Mammillaria igualensis Repp. -- not accepted
  Mammillaria inaiae R.T. Craig -- not accepted
  Mammillaria infernillensis R.T. Craig -- not accepted
  Mammillaria ingens Backeb. -- not accepted
  Mammillaria insularis H.E. Gates -- accepted
  Mammillaria isotensis Repp. -- not accepted
  Mammillaria jaliscana (Britton & Rose) Boed. -- accepted
  Mammillaria jaliscana ssp. jaliscana (Britton & Rose) Boed. -- accepted
  Mammillaria jaliscana ssp. zacatecasensis (Shurly) D.R. Hunt -- accepted
  Mammillaria jamaicensis Areces -- not accepted
  Mammillaria johnstonii Orcutt -- accepted
  Mammillaria karwinskiana Mart. -- accepted
  Mammillaria karwinskiana ssp. beiselii (Diers) D.R. Hunt -- accepted
  Mammillaria karwinskiana ssp. collinsii (Orcutt) D.R. Hunt -- accepted
  Mammillaria karwinskiana ssp. karwinskiana Mart. -- accepted
  Mammillaria karwinskiana ssp. nejapensis (R.T. Craig & E.Y. Dawson) D.R. Hunt -- accepted
  Mammillaria kelleriana F. Schmoll ex R.T. Craig -- not accepted
  Mammillaria klissingiana Boed. -- accepted
  Mammillaria knebeliana Boed. -- not accepted
  Mammillaria knippeliana Quehl -- accepted
  Mammillaria kraehenbuehlii (Krainz) Krainz -- accepted
  Mammillaria krassuckae Repp. -- not accepted
  Mammillaria kuentziana P. Fearn & B. Fearn -- not accepted
  Mammillaria kunzeana Boed. & Quehl -- not accepted
  Mammillaria lanata (Britton & Rose) Orcutt -- not accepted
  Mammillaria lanigera Repp. -- not accepted
  Mammillaria lasiacantha Engelm. -- accepted -- small pincushion cactus, Biznaga de espinas pubescentes, lacespine nipple cactus
  Mammillaria lasiacantha var. denudata Engelm. -- not accepted
  Mammillaria laui D.R. Hunt -- accepted
  Mammillaria laui ssp. dasyacantha (D.R. Hunt) D.R. Hunt -- accepted
  Mammillaria laui ssp. laui D.R. Hunt -- accepted
  Mammillaria laui ssp. subducta (D.R. Hunt) D.R. Hunt -- accepted
  Mammillaria leei (Rose ex Boed.) D. Weniger -- not accepted
  Mammillaria lengdobleriana Boed. -- not accepted
  Mammillaria leptacantha (A.B. Lau) Repp. -- not accepted
  Mammillaria leucantha Boed. -- not accepted
  Mammillaria leucocentra A. Berg -- not accepted
  Mammillaria lewisiana H.E. Gates -- not accepted
  Mammillaria limonensis Repp. -- not accepted
  Mammillaria linaresensis R. Wolf & F. Wolf -- accepted
  Mammillaria lindsayi R.T. Craig -- not accepted
  Mammillaria longicoma (Britton & Rose) A. Berger -- not accepted
  Mammillaria longiflora (Britton & Rose) A. Berger -- accepted
  Mammillaria longiflora ssp. longiflora (Britton & Rose) A. Berger -- accepted
  Mammillaria longiflora ssp. tepexicensis (J. Meyrán) Lüthy -- accepted
  Mammillaria longimamma DC. -- accepted
  Mammillaria longimamma var. sphaerica (A. Dietr.) K. Brandegee -- not accepted
  Mammillaria longimanna DC. -- not accepted
  Mammillaria louisae G.E. Linds. -- not accepted
  Mammillaria louiseae G.E. Linds. -- not accepted
  Mammillaria luethyi G.S. Hinton -- accepted
  Mammillaria macdougalii Rose -- not accepted
  Mammillaria machucae W.A. Fitz Maur. & B. Fitz Maur. -- not accepted
  Mammillaria macromeris Engelm. -- not accepted
  Mammillaria magallanii F. Schmoll ex R.T. Craig -- not accepted
  Mammillaria magneticola J. Meyrán -- not accepted
  Mammillaria magnifica Buchenau -- accepted
  Mammillaria magnimamma Haw. -- accepted
  Mammillaria mainiae K. Brandegee -- accepted -- Maine pincushion cactus, Biznaga de Nogales, counterclockwise nipple cactus
  Mammillaria mammillaris (L.) H. Karst. -- accepted
  Mammillaria manana W.A. Fitz Maur. & B. Fitz Maur. -- not accepted
  Mammillaria marcosii W.A. Fitz Maur. & B. Fitz Maur. -- accepted
  Mammillaria marksiana Krainz -- accepted
  Mammillaria marnieriana Backeb. -- not accepted
  Mammillaria marshalliana (H.E. Gates) Boed. -- not accepted
  Mammillaria martinezii Backeb. -- not accepted
  Mammillaria mathildae Kraehenb. & Krainz -- accepted
  Mammillaria matudae Bravo -- accepted
  Mammillaria mayensis R.T. Craig -- not accepted
  Mammillaria mazatlanensis K. Schum. ex Gürke -- accepted
  Mammillaria meiacantha Engelm. -- accepted -- Biznaga de pocas espinas
  Mammillaria meissneri C. Ehrenb. -- not accepted
  Mammillaria melaleuca Karw. ex Salm-Dyck -- accepted
  Mammillaria melanocentra Poselg. -- accepted
  Mammillaria melanocentra ssp. melanocentra Poselg. -- accepted
  Mammillaria melanocentra ssp. rubrograndis (Repp. & A.B. Lau) D.R. Hunt -- accepted
  Mammillaria mendeliana (Bravo) Werderm. -- not accepted
  Mammillaria mercadensis (Britton & Rose) Patoni -- accepted
  Mammillaria meridiorosei Castetter, P. Pierce & K.H. Schwer. -- not accepted
  Mammillaria meyranii Bravo -- accepted
  Mammillaria microcarpa Engelm. -- not accepted
  Mammillaria microcarpa ssp. grahamii (Engelm.) Mottram -- not accepted
  Mammillaria microcarpa var. auricarpa W.T. Marshall -- not accepted
  Mammillaria microcarpa var. milleri (Britton & Rose) W.T. Marshall -- not accepted
  Mammillaria microhelia Werderm. -- accepted
  Mammillaria microheliopsis Werderm. -- not accepted
  Mammillaria micromeris Engelm. -- not accepted
  Mammillaria micromeris var. greggii Engelm. -- not accepted
  Mammillaria micromeris var. unguispina Boed. -- not accepted
  Mammillaria miegiana W.H. Earle -- not accepted
  Mammillaria milleri (Britton & Rose) Boed. -- not accepted -- Biznaga de Miller
  Mammillaria milleri var. grahamii (Engelm.) Neutel. -- not accepted
  Mammillaria milleri var. sheldonii (Britton & Rose) Neutel. -- not accepted
  Mammillaria missouriensis Sweet -- not accepted
  Mammillaria mitlensis Bravo -- not accepted
  Mammillaria mixtecensis Bravo -- not accepted
  Mammillaria moeller-valdeziana Appenz. -- not accepted
  Mammillaria moelleriana Boed. -- accepted
  Mammillaria mollendorffiana Shurly -- not accepted
  Mammillaria mollihamata Shurly -- not accepted
  Mammillaria monancistracantha Backeb. -- not accepted
  Mammillaria monancistria O. Berg. ex K. Schum. -- not accepted
  Mammillaria montensis R.T. Craig -- not accepted
  Mammillaria monticola Repp. -- not accepted
  Mammillaria morganiana Tiegel -- accepted
  Mammillaria morricalii Cowper -- not accepted
  Mammillaria movensis R.T. Craig -- not accepted
  Mammillaria muehlenpfordtii C.F. Först. -- accepted
  Mammillaria multiceps Salm-Dyck -- not accepted -- Biznaga de muchas cabezas
  Mammillaria multidigitata Radley ex G.E. Linds. -- accepted
  Mammillaria multiformis (Britton & Rose) Backeb. -- not accepted
  Mammillaria multihamata Boed. -- not accepted
  Mammillaria mystax Mart. -- accepted
  Mammillaria nagliana Repp. -- not accepted
  Mammillaria nana Backeb. ex Mottram -- accepted
  Mammillaria napina J.A. Purpus -- accepted
  Mammillaria nazasensis (Glass & R.A. Foster) Repp. -- not accepted
  Mammillaria nejapensis R.T. Craig & E.Y. Dawson -- not accepted
  Mammillaria nellieae (Croizat) Croizat -- not accepted
  Mammillaria neobertrandiana Backeb. -- not accepted
  Mammillaria neocrucigera Backeb. -- not accepted
  Mammillaria neomystax Backeb. -- not accepted
  Mammillaria neopalmeri R.T. Craig -- accepted
  Mammillaria neophaeacantha Fritz Schwarz ex Backeb. -- not accepted
  Mammillaria neopotosina R.T. Craig -- not accepted
  Mammillaria neoschwarzeana Backeb. -- not accepted
  Mammillaria nickelsae K. Brandegee -- not accepted
  Mammillaria nickelsiae K. Brandegee -- not accepted
  Mammillaria nivosa Link ex Pfeiff. -- accepted -- woolly nipple cactus
  Mammillaria nunezii (Britton & Rose) Orcutt -- accepted
  Mammillaria nunezii ssp. bella (Backeb.) D.R. Hunt -- accepted
  Mammillaria nunezii ssp. nunezii (Britton & Rose) Orcutt -- accepted
  Mammillaria obscura Hildm. -- not accepted
  Mammillaria occidentalis (Britton & Rose) Boed. -- not accepted
  Mammillaria ochoterenae (Bravo) Werderm. -- not accepted
  Mammillaria ocotillensis R.T. Craig -- not accepted
  Mammillaria octacantha DC. -- not accepted
  Mammillaria oliviae Orcutt -- not accepted -- Biznaga chollo chico
  Mammillaria orcuttii Boed. -- accepted
  Mammillaria orestera L.D. Benson -- not accepted
  Mammillaria ortiz-rubiona (Bravo) Werderm. -- not accepted
  Mammillaria oteroi Glass & R.A. Foster -- accepted
  Mammillaria pachycylindrica Backeb. -- not accepted
  Mammillaria pachyrhiza Backeb. -- not accepted
  Mammillaria pacifica (H.E. Gates) Boed. -- not accepted
  Mammillaria painteri Rose ex Quehl -- accepted
  Mammillaria papasquiarensis (Bravo) Repp. -- not accepted
  Mammillaria papyracantha Engelm. -- not accepted
  Mammillaria parensis R.T. Craig -- not accepted
  Mammillaria parkinsonii Ehrenb. -- accepted
  Mammillaria parrasensis Repp. -- not accepted
  Mammillaria patonii (Bravo) Werderm. -- not accepted
  Mammillaria pectinifera F.A.C. Weber -- accepted
  Mammillaria pectinifera ssp. pectinifera F.A.C. Weber -- accepted
  Mammillaria pectinifera ssp. solisioides (Backeb.) D.R. Hunt -- accepted
  Mammillaria peninsularis (Britton & Rose) Orcutt -- accepted
  Mammillaria pennispinosa Krainz -- accepted
  Mammillaria pennispinosa ssp. nazasensis (Glass & R.A. Foster ) D.R. Hunt -- accepted
  Mammillaria pennispinosa ssp. pennispinosa Krainz -- accepted
  Mammillaria perbella Hildm. ex K. Schum. -- accepted
  Mammillaria perezdelarosae Bravo & Scheinvar -- not accepted
  Mammillaria petrophila K. Brandegee -- accepted
  Mammillaria petrophila ssp. arida (Rose) D.R. Hunt -- accepted
  Mammillaria petrophila ssp. baxteriana (H.E. Gates) D.R. Hunt -- accepted
  Mammillaria petrophila ssp. petrophila K. Brandegee -- accepted
  Mammillaria petterssonii Hildm. -- accepted
  Mammillaria phitauiana (E.M. Baxter) Werderm. -- accepted
  Mammillaria picta Meinsh. -- accepted
  Mammillaria pilispina J.A. Purpus -- accepted
  Mammillaria pitcayensis Bravo -- not accepted
  Mammillaria plumosa F.A.C. Weber -- accepted
  Mammillaria polyedra Mart. -- accepted
  Mammillaria polythele Mart. -- accepted
  Mammillaria polythele ssp. obconella (Scheidw.) D.R. Hunt -- accepted
  Mammillaria polythele ssp. polythele Mart. -- accepted
  Mammillaria pondii Greene -- accepted
  Mammillaria pondii ssp. maritima (G.E. Linds.) D.R. Hunt -- accepted
  Mammillaria pondii ssp. pondii Greene -- accepted
  Mammillaria pondii ssp. setispina (J.M. Coult.) D.R. Hunt -- accepted
  Mammillaria poselgeri Hildm. -- accepted
  Mammillaria posseltiana Boed. -- not accepted
  Mammillaria potosiana Jacobi -- not accepted
  Mammillaria pottsii Scheer ex Salm-Dyck -- accepted -- Biznaga de Potts, rattail nipple cactus
  Mammillaria priessnitzii Repp. -- not accepted
  Mammillaria pringlei (J.M. Coult.) K. Brandegee -- accepted
  Mammillaria prolifera (Mill.) Haw. -- accepted -- Biznaga prolifera, Texas nipple cactus
  Mammillaria prolifera ssp. arachnoidea (D.R. Hunt) D.R. Hunt -- accepted
  Mammillaria prolifera ssp. haitiensis (K. Schum.) D.R. Hunt -- not accepted
  Mammillaria prolifera ssp. prolifera (Mill.) Haw. -- accepted
  Mammillaria prolifera ssp. texana (Engelm.) D.R. Hunt -- accepted
  Mammillaria pseudocrucigera R.T. Craig -- not accepted
  Mammillaria pseudorekoi (Rose) Boed. -- not accepted
  Mammillaria pseudoscrippsiana Backeb. -- not accepted
  Mammillaria pseudosimplex W. Haage & Backeb. -- not accepted
  Mammillaria puberula Repp. -- not accepted
  Mammillaria pubispina Boed. -- not accepted
  Mammillaria pullihamata Repp. -- not accepted
  Mammillaria pycnacantha Mart. -- not accepted
  Mammillaria pygmaea (Britton & Rose) A. Berger -- not accepted
  Mammillaria queretarica R.T. Craig -- not accepted
  Mammillaria radiaissima G.E. Linds. -- not accepted
  Mammillaria ramillosa (Cutak) D. Weniger -- not accepted
  Mammillaria rayonensis Repp. -- not accepted
  Mammillaria recurvata Engelm. -- not accepted
  Mammillaria rekoi (Britton & Rose) Vaupel -- accepted
  Mammillaria rekoi ssp. aureispina (A.B. Lau) D.R. Hunt -- accepted
  Mammillaria rekoi ssp. leptacantha (A.B. Lau) D.R. Hunt -- accepted
  Mammillaria rekoi ssp. rekoi (Britton & Rose) Vaupel -- accepted
  Mammillaria rekoiana R.T. Craig -- not accepted
  Mammillaria reppenhagenii D.R. Hunt -- not accepted
  Mammillaria rettigiana Boed. -- accepted
  Mammillaria rhodantha Link & Otto -- accepted
  Mammillaria rhodantha ssp. fera-rubra (F. Schmoll ex R.T. Craig) D.R. Hunt -- accepted
  Mammillaria rhodantha ssp. mccartenii D.R. Hunt -- accepted
  Mammillaria rhodantha ssp. mollendorffiana (Shurly) D.R. Hunt -- accepted
  Mammillaria rhodantha ssp. rhodantha Link & Otto -- accepted
  Mammillaria rhodantha var. auriceps (Lem.) Salm-Dyck -- not accepted
  Mammillaria ritteriana Boed. -- not accepted
  Mammillaria robertii (A. Berger) D. Weniger -- not accepted
  Mammillaria robustispina A. Schott ex Engelm. -- not accepted
  Mammillaria roseiflora (Lahman) D. Weniger -- not accepted
  Mammillaria rosensis R.T. Craig -- not accepted
  Mammillaria roseoalba Boed. -- accepted
  Mammillaria rossiana Heinrich -- not accepted
  Mammillaria rubida Fritz Schwarz ex Backeb. -- not accepted
  Mammillaria rubrograndis Repp. & A.B. Lau -- not accepted
  Mammillaria ruestii Quehl -- not accepted
  Mammillaria runyonii (Britton & Rose) Cory -- not accepted
  Mammillaria saboae Glass -- accepted
  Mammillaria saboae ssp. goldii (Glass & R.A. Foster) D.R. Hunt -- accepted
  Mammillaria saboae ssp. haudeana (A.B. Lau & K. Wagner) D.R. Hunt -- accepted
  Mammillaria saboae ssp. saboae Glass -- accepted
  Mammillaria saint-pieana Backeb. -- not accepted
  Mammillaria sanangelensis Sánchez-Mej. -- not accepted
  Mammillaria sanchez-mejoradae Rodr. González -- accepted
  Mammillaria sanjuanensis Repp. -- not accepted
  Mammillaria sanluisensis Shurly -- not accepted
  Mammillaria santaclarensis Cowper -- not accepted
  Mammillaria sartorii J.A. Purpus -- accepted
  Mammillaria saxicola Repp. -- not accepted
  Mammillaria scheeri Muehlenpf. -- not accepted
  Mammillaria schiedeana Ehrenb. -- accepted
  Mammillaria schiedeana ssp. dumetorum (J.A. Purpus) D.R. Hunt -- accepted
  Mammillaria schiedeana ssp. giselae (Mart.-Aval. & Glass) Lüthy -- accepted
  Mammillaria schiedeana ssp. schiedeana Ehrenb. -- accepted
  Mammillaria schieliana H. Schick -- not accepted
  Mammillaria schmollii (Bravo) Werderm. -- not accepted
  Mammillaria schumannii Hildm. -- accepted
  Mammillaria schwarzii Shurly -- accepted
  Mammillaria scrippsiana (Britton & Rose) Orcutt -- accepted
  Mammillaria sempervivi DC. -- accepted
  Mammillaria senilis Lodd. ex Salm-Dyck -- accepted
  Mammillaria setispina Engelm. ex J.M. Coult. -- not accepted
  Mammillaria sheldonii (Britton & Rose) Boed. -- not accepted
  Mammillaria shurliana H.E. Gates -- not accepted
  Mammillaria silvatica Repp. -- not accepted
  Mammillaria similis Engelm. -- not accepted
  Mammillaria similis var. robustior Engelm. -- not accepted
  Mammillaria sinistrohamata Boed. -- accepted
  Mammillaria slevinii (Britton & Rose) Boed. -- not accepted
  Mammillaria sneedi (Britton & Rose) Cory -- not accepted
  Mammillaria sneedii (Britton & Rose) Cory -- not accepted
  Mammillaria solisii (Britton & Rose) Boed. -- not accepted
  Mammillaria solisioides Backeb. -- not accepted
  Mammillaria sonorensis R.T. Craig -- accepted
  Mammillaria sphacelata Mart. -- accepted
  Mammillaria sphacelata ssp. sphacelata Mart. -- accepted
  Mammillaria sphacelata ssp. viperina (J.A. Purpus) D.R. Hunt -- accepted
  Mammillaria sphaerica A. Dietr. -- accepted -- Biznaga esférica, longmamma nipple cactus, longspine nipple cactus
  Mammillaria spinosissima Lem. -- accepted
  Mammillaria spinosissima ssp. pilcayensis (Bravo) D.R. Hunt -- accepted
  Mammillaria spinosissima ssp. spinosissima Lem. -- accepted
  Mammillaria spinosissima ssp. tepoxtlana D.R. Hunt -- accepted
  Mammillaria stampferi Repp. -- not accepted
  Mammillaria standleyi (Britton & Rose) Orcutt -- accepted
  Mammillaria stella-de-tacubaya Heese -- not accepted
  Mammillaria strobilina Tiegel -- not accepted
  Mammillaria subducta (D.R. Hunt) Repp. -- not accepted
  Mammillaria subdurispina Backbg. -- not accepted
  Mammillaria subtilis Backeb. -- not accepted
  Mammillaria sulcata Engelm. -- not accepted
  Mammillaria supertexta Mart. ex Pfeiff. -- accepted
  Mammillaria supraflumen Repp. -- not accepted
  Mammillaria surculosa Boed. -- accepted
  Mammillaria swinglei (Britton & Rose) Boed. -- not accepted
  Mammillaria tayloriorum Glass & R.A. Foster -- accepted
  Mammillaria tegelbergiana G.E. Linds. -- not accepted
  Mammillaria tenampensis (Britton & Rose) A. Berger -- not accepted
  Mammillaria tepexicensis J. Meyrán -- not accepted
  Mammillaria tesopacensis R.T. Craig -- not accepted
  Mammillaria tetrancistra Engelm. -- accepted -- corkseed pincushion cactus, Biznaga de cuatro ganchos, common fishhook cactus
  Mammillaria tezontle W.A. Fitz Maur. & B. Fitz Maur. -- not accepted
  Mammillaria theresae Cutak -- accepted
  Mammillaria thornberi Orcutt -- accepted -- Thornber's pincushion cactus, Biznaga de Thornber, Thornber's nipple cactus
  Mammillaria thornberi ssp. thornberi Orcutt -- accepted
  Mammillaria thornberi ssp. yaquensis (R.T. Craig) D.R. Hunt -- accepted
  Mammillaria tlalocii Repp. -- not accepted
  Mammillaria tobuschii W.T. Marshall -- not accepted
  Mammillaria tolimensis R.T. Craig -- not accepted
  Mammillaria tonalensis D.R. Hunt -- accepted
  Mammillaria tropica Repp. -- not accepted
  Mammillaria tuberculosa Engelm. -- not accepted
  Mammillaria uberiformis Zucc. ex Pfeiff. -- not accepted
  Mammillaria uncinata Zucc. ex Pfeiff. -- accepted
  Mammillaria unihamata Boed. -- not accepted
  Mammillaria vagaspina R.T. Craig -- not accepted
  Mammillaria vallensis Repp. -- not accepted
  Mammillaria variabilis Repp. -- not accepted
  Mammillaria varicolor (Tiegel) D. Weniger -- not accepted
  Mammillaria varieaculeata Buchenau -- accepted
  Mammillaria vaupelii Tiegel -- not accepted
  Mammillaria verhaertiana Boed. -- not accepted
  Mammillaria verticealba Repp. -- not accepted
  Mammillaria vetula Mart. -- accepted
  Mammillaria vetula ssp. gracilis (Pfeiff.) D.R. Hunt -- accepted
  Mammillaria vetula ssp. vetula Mart. -- accepted
  Mammillaria viereckii Boed. -- not accepted
  Mammillaria viescensis Rogoz. & Appenz. -- not accepted
  Mammillaria viperina J.A. Purpus -- not accepted
  Mammillaria virginis Fittkau & Kladiwa -- not accepted
  Mammillaria viridiflora (Britton & Rose) Cory -- accepted -- Biznaga de flor verde, greenflower nipple cactus
  Mammillaria voburnensis var. eichlamii (Quehl) Repp. -- not accepted
  Mammillaria wagneriana Boed. -- accepted
  Mammillaria weingartiana Boed. -- accepted
  Mammillaria wiesingeri Boed. -- accepted
  Mammillaria wiesingeri ssp. apamensis (Repp.) D.R. Hunt -- accepted
  Mammillaria wiesingeri ssp. wiesingeri Boed. -- accepted
  Mammillaria wilcoxii Toumey ex K. Schum. -- not accepted -- Biznaga de Wilcox
  Mammillaria wildii A. Dietr. -- not accepted
  Mammillaria winteriae Boed. -- not accepted
  Mammillaria winteriae ssp. aramberri D.R. Hunt -- not accepted
  Mammillaria winteriae ssp. winteriae Boed. -- not accepted
  Mammillaria wohlschlageri Repp. -- not accepted
  Mammillaria woodsii Krainz -- not accepted
  Mammillaria woodsii R.T. Craig -- not accepted
  Mammillaria wrightii Engelm. -- accepted -- Wright's pincushion cactus, Biznaga de Wright, Wright's nipple cactus
  Mammillaria wrightii ssp. wilcoxii (Toumey ex K. Schum.) D.R. Hunt -- accepted
  Mammillaria wrightii ssp. wrightii Engelm. -- accepted
  Mammillaria wuthenauiana Backeb. -- not accepted
  Mammillaria xaltianguensis Sánchez-Mej. -- accepted
  Mammillaria xaltianguensis ssp. bambusiphila (Repp.) D.R. Hunt -- accepted
  Mammillaria xaltianguensis ssp. xaltianguensis Sánchez-Mej. -- accepted
  Mammillaria xanthina (Britton & Rose) Boed. -- not accepted
  Mammillaria xochipilli Repp. -- not accepted
  Mammillaria yaquensis R.T. Craig -- not accepted
  Mammillaria yucatanensis (Britton & Rose) Orcutt -- not accepted
  Mammillaria zacatecasensis Shurly -- not accepted
  Mammillaria zahniana Boed. & F. Ritter -- not accepted
  Mammillaria zapilotensis R.T. Craig -- not accepted
  Mammillaria zeilmanniana Boed. -- accepted
  Mammillaria zephyranthoides Scheidw. -- accepted
  Mammillaria zephyranthoides ssp. heidiae (Krainz) Lüthy -- accepted
  Mammillaria zephyranthoides ssp. zephyranthoides Scheidw. -- accepted
  Mammillaria zeyeriana F. Haage ex K. Schum. -- not accepted
  Mammillaria zublerae Repp. -- accepted
  Mammilloydia Buxb. -- not accepted
  Mammilloydia candida (Scheidw.) Buxb. -- not accepted
  Marenopuntia Backeb. -- not accepted
  Marenopuntia marenae (S.H. Parsons) Backeb. -- not accepted
  Marginatocereus Backeb. -- not accepted
  Marginatocereus marginatus (DC.) Backeb. -- not accepted
  Marniera Backeb. -- not accepted
  Marniera chrysocardium (Alexander) Backeb. -- not accepted
  Marshallocereus Backeb. -- not accepted
  Marshallocereus aragonii (F.A.C. Weber) Backeb. -- not accepted
  Marshallocereus thurberi (Engelm.) Backeb. -- not accepted
  Marshallocereus thurberi var. littoralis (K. Brandegee) Backeb. -- not accepted
  Matucana Britton & Rose -- accepted
  Matucana aurantiaca (Vaupel) Buxb. -- accepted
  Matucana aurantiaca ssp. aurantiaca (Vaupel) Buxb. -- accepted
  Matucana aurantiaca ssp. currundayensis (F. Ritter) Mottram -- accepted
  Matucana aurantiaca ssp. fruticosa (F. Ritter) Mottram -- accepted
  Matucana aurantiaca ssp. hastifera (F. Ritter) Mottram -- accepted
  Matucana aurantiaca ssp. polzii (Diers, Donald & Zecher) Mottram -- accepted
  Matucana aureiflora F. Ritter -- accepted
  Matucana blancii Backeb. -- not accepted
  Matucana breviflora Rauh & Backeb. -- not accepted
  Matucana calliantha F. Ritter -- not accepted
  Matucana celendinensis F. Ritter -- not accepted
  Matucana cereoides Rauh & Backeb. -- not accepted
  Matucana comacephala F. Ritter -- not accepted
  Matucana crinifera F. Ritter -- not accepted
  Matucana currundayensis F. Ritter -- not accepted
  Matucana elongata Rauh & Backeb. -- not accepted
  Matucana formosa F. Ritter -- accepted
  Matucana fruticosa F. Ritter -- not accepted
  Matucana hastifera F. Ritter -- not accepted
  Matucana haynei (Otto) Britton & Rose -- accepted
  Matucana haynei ssp. haynei (Otto) Britton & Rose -- accepted
  Matucana haynei ssp. herzogiana (Backeb.) Mottram -- accepted
  Matucana haynei ssp. hystrix (Rauh & Backeb.) Mottram -- accepted
  Matucana haynei ssp. myriacantha (Vaupel) Mottram -- accepted
  Matucana herzogiana Backeb. -- not accepted
  Matucana huagalensis (Donald & A.B. Lau) Bregman -- accepted
  Matucana hystrix Rauh & Backeb. -- not accepted
  Matucana intertexta F. Ritter -- accepted
  Matucana krahnii (Donald) Bregman -- accepted
  Matucana madisoniorum (Hutchison) G.D. Rowley -- accepted
  Matucana megalantha F. Ritter -- not accepted
  Matucana multicolor Rauh & Backeb. -- not accepted
  Matucana oreodoxa (F. Ritter) Slaba -- accepted
  Matucana pallarensis F. Ritter -- not accepted
  Matucana paucicostata F. Ritter -- accepted
  Matucana polzii Diers, Donald & Zecher -- not accepted
  Matucana pujupatii (Donald & A.B. Lau) Bregman -- accepted
  Matucana purpureoalba F. Ritter -- not accepted
  Matucana ritteri Buining -- accepted
  Matucana supertexta F. Ritter -- not accepted
  Matucana tuberculata (Donald) Bregman -- accepted
  Matucana tuberculosa (Donald) F. Ritter -- not accepted
  Matucana variabilis Rauh & Backeb. -- not accepted
  Matucana weberbaueri (Vaupel) Backeb. -- accepted
  Matucana winteri F. Ritter -- not accepted
  Matucana yanganucensis Rauh & Backeb. -- not accepted
  Mediocactus Britton & Rose -- not accepted
  Mediocactus hahnianus Backeb. -- not accepted
  Mediocactus hassleri (K. Schum.) Backeb. -- not accepted
  Mediocactus lindmanii (F.A.C. Weber) Backeb. -- not accepted
  Mediocactus megalanthus (K. Schum. ex Vaupel) Britton & Rose -- not accepted
  Mediolobivia Backeb. -- not accepted
  Mediolobivia auranitida (Wessner) Krainz -- not accepted
  Mediolobivia brachiantha (Wessner) Krainz -- not accepted
  Mediolobivia conoidea (Wessner) Krainz -- not accepted
  Mediolobivia costata (Werderm.) Krainz -- not accepted
  Mediolobivia elegans Backeb. -- not accepted
  Mediolobivia euanthema var. fricii Backeb. -- not accepted
  Mediolobivia eucaliptana (Backeb.) Krainz -- not accepted
  Mediolobivia haefneriana Cullmann -- not accepted
  Mediolobivia hirsutissima Cárdenas -- not accepted
  Mediolobivia ithyacantha Cárdenas -- not accepted
  Mediolobivia neopygmaea Backeb. -- not accepted
  Mediolobivia nigricans (Wessner) Krainz -- not accepted
  Mediolobivia pygmaea (R.E. Fr.) Krainz -- not accepted
  Mediolobivia ritteri (Wessner) Krainz -- not accepted
  Mediolobivia schmiedcheniana (J. Kohler) Krainz -- not accepted
  Mediolobivia steinmannii (Solms) Krainz -- not accepted
  Melocactus (L.) Link & Otto -- accepted
  Melocactus acispinosus Buining & Brederoo -- not accepted
  Melocactus actinacanthus Areces -- not accepted
  Melocactus acunae León -- not accepted
  Melocactus amethystinus Buining & Brederoo -- not accepted
  Melocactus ammotrophus Buining & Brederoo -- not accepted
  Melocactus amstutziae Rauh & Backeb. -- not accepted
  Melocactus andinus R. Gruber ex N.P. Taylor -- accepted
  Melocactus andinus ssp. andinus R. Gruber ex N.P. Taylor -- accepted
  Melocactus andinus ssp. hernandezii (Fern. Alonso & Xhonneux) N.P. Taylor -- accepted
  Melocactus andinus ssp. soatensis Fern. Alonso & Xhonneux -- not accepted
  Melocactus arcuatispinus Brederoo & Eerkens -- not accepted
  Melocactus axiniphorus Buining & Brederoo -- not accepted
  Melocactus azulensis Buining & Brederoo -- not accepted
  Melocactus azureus Buining & Brederoo -- accepted
  Melocactus azureus ssp. ferreophilus (Buining & Brederoo) N.P. Taylor -- not accepted
  Melocactus bahiensis (Britton & Rose) Luetzelb. -- accepted
  Melocactus bahiensis ssp. amethystinus (Buining & Brederoo) N.P. Taylor -- accepted
  Melocactus bahiensis ssp. bahiensis (Britton & Rose) Luetzelb. -- accepted
  Melocactus bellavistensis Rauh & Backeb. -- accepted
  Melocactus bellavistensis ssp. bellavistensis Rauh & Backeb. -- accepted
  Melocactus bellavistensis ssp. onychacanthus (F. Ritter) N.P. Taylor -- accepted
  Melocactus braunii Esteves -- accepted
  Melocactus brederooianus Buining -- accepted
  Melocactus broadwayi (Britton & Rose) A. Berger -- accepted -- Turk's cap
  Melocactus caesius H.L. Wendl. -- not accepted
  Melocactus canescens F. Ritter -- not accepted
  Melocactus caroli-linnaei N.P. Taylor -- accepted
  Melocactus citrispinus Antesb. -- not accepted
  Melocactus communis (W.T. Aiton) Link & Otto -- not accepted
  Melocactus concinnus Buining & Brederoo -- accepted
  Melocactus conoideus Buining & Brederoo -- accepted
  Melocactus coronatus (Lam.) Backeb. -- not accepted
  Melocactus cremnophilus Buining & Brederoo -- not accepted
  Melocactus curvicornis Buining & Brederoo -- not accepted
  Melocactus curvispinus Pfeiff. -- accepted
  Melocactus curvispinus ssp. caesius (H.L. Wendl.) N.P. Taylor -- accepted
  Melocactus curvispinus ssp. curvispinus Pfeiff. -- accepted
  Melocactus curvispinus ssp. dawsonii (Bravo) N.P. Taylor -- accepted
  Melocactus curvispinus ssp. koolwijkianus (Suringar) G. Thomson -- accepted
  Melocactus dawsonii Bravo -- not accepted
  Melocactus dawsonii ssp. dawsonii Bravo -- not accepted
  Melocactus deinacanthus Buining & Brederoo -- accepted
  Melocactus deinacanthus ssp. florschuetzianus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Melocactus deinacanthus ssp. longicarpus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Melocactus depressus Hook. -- not accepted
  Melocactus diersianus Buining & Brederoo -- not accepted
  Melocactus ellemeetii Miq. -- not accepted
  Melocactus ernestii Vaupel -- accepted
  Melocactus ernestii ssp. ernestii Vaupel -- accepted
  Melocactus ernestii ssp. longicarpus (Buining & Brederoo) N.P. Taylor -- accepted
  Melocactus erythracanthus Buining & Brederoo -- not accepted
  Melocactus erythracantus Buining & Brederoo -- not accepted
  Melocactus ferreophilus Buining & Brederoo -- accepted
  Melocactus florschuetzianus Buining & Brederoo -- not accepted
  Melocactus florschutzianus Buining & Brederoo -- not accepted
  Melocactus fortalezensis Rauh & Backeb. -- not accepted
  Melocactus giganteus Buining & Brederoo -- not accepted
  Melocactus glaucescens Buining & Brederoo -- accepted
  Melocactus glauxianus Brederoo & C.A.L. Bercht -- not accepted
  Melocactus grisoleoviridis Buining & Brederoo -- not accepted
  Melocactus guanensis Xhonneux & Fern. Alonso -- not accepted
  Melocactus guaricensis Croizat -- not accepted
  Melocactus guitarti León -- not accepted
  Melocactus harlowii (Britton & Rose) Vaupel -- accepted
  Melocactus helvolilanthus Buining & Brederoo -- not accepted
  Melocactus hernandezii Fern. Alonso & Xhonneux -- not accepted
  Melocactus hispaniolicus Vaupel -- not accepted
  Melocactus holguinensis Areces -- not accepted
  Melocactus huallancaensis Rauh & Backeb. -- not accepted
  Melocactus inclinatus Antesb. -- not accepted
  Melocactus inconcinnus Buining & Brederoo -- accepted
  Melocactus interpositus F. Ritter -- not accepted
  Melocactus intortus (Mill.) Urb. -- accepted -- Turk's cap
  Melocactus intortus ssp. domingensis Areces -- accepted
  Melocactus intortus ssp. intortus (Mill.) Urb. -- accepted
  Melocactus jansenianus Backeb. -- not accepted
  Melocactus krainzianus Buining & Brederoo -- not accepted
  Melocactus lanssensianus P.J. Braun -- accepted
  Melocactus laui Antesb. -- not accepted
  Melocactus lemairei (Monv. ex Lem.) Miq. ex Lem. -- accepted
  Melocactus lensselinkianus Buining & Brederoo -- not accepted
  Melocactus levitestatus Buining & Brederoo -- accepted
  Melocactus lobelii Suringar -- not accepted
  Melocactus loboguerreroi Cárdenas -- not accepted
  Melocactus longicarpus Buining & Brederoo -- not accepted
  Melocactus longispinus Buining & Brederoo -- not accepted
  Melocactus macracanthos (Salm-Dyck) Link & Otto -- accepted
  Melocactus macrodiscus Werderm. -- not accepted
  Melocactus matanzanus León -- accepted
  Melocactus maxonii (Rose) Gürke -- not accepted
  Melocactus mazelianus Ríha -- accepted
  Melocactus melocactoides auctt. -- not accepted
  Melocactus montanus F. Ritter -- not accepted
  Melocactus mulequensis Buining & Brederoo -- not accepted
  Melocactus nagyi Mészáros -- not accepted
  Melocactus neomontanus Van Heek & Hovens -- not accepted
  Melocactus neryi K. Schum. -- accepted
  Melocactus nitidus F. Ritter -- not accepted
  Melocactus oaxacensis (Britton & Rose) Backeb. -- not accepted
  Melocactus obtusipetalus Lem. -- not accepted
  Melocactus onychacanthus F. Ritter -- not accepted
  Melocactus oreas Miq. -- accepted
  Melocactus oreas ssp. cremnophilus (Buining & Brederoo) P.J. Braun & Esteves -- accepted
  Melocactus oreas ssp. ernestii (Vaupel) P.J. Braun & Esteves -- not accepted
  Melocactus oreas ssp. oreas Miq. -- accepted
  Melocactus oreas var. longispinus (Buining & Brederoo) P.J. Braun -- not accepted
  Melocactus pachyacanthus Buining & Brederoo -- accepted
  Melocactus pachyacanthus ssp. pachyacanthus Buining & Brederoo -- accepted
  Melocactus pachyacanthus ssp. viridis N.P. Taylor -- accepted
  Melocactus paucispinus G. Heimen & R.J. Paul -- accepted
  Melocactus pedernalensis M.M. Mejía & R.G. García -- not accepted
  Melocactus peruvianus Vaupel -- accepted
  Melocactus praerupticola Areces -- accepted
  Melocactus pruinosus Werderm. -- not accepted
  Melocactus pulvinosus Suringar -- not accepted
  Melocactus robustispinus Buining & Brederoo -- not accepted
  Melocactus roraimensis P.J. Braun & Esteves -- not accepted
  Melocactus rubrisaetosus Buining & Brederoo -- not accepted
  Melocactus rubrispinus F. Ritter -- not accepted
  Melocactus ruestii K. Schum. -- not accepted
  Melocactus ruestii ssp. maxonii (Rose) Elizondo -- not accepted
  Melocactus ruestii ssp. oaxacensis (Britton & Rose) Elizondo -- not accepted
  Melocactus ruestii ssp. sanctae-rosae (L.D. Gómez) Elizondo -- not accepted
  Melocactus salvador L. Murillo -- not accepted
  Melocactus salvadorensis Werderm. -- accepted
  Melocactus saxicola Diers & Esteves -- not accepted
  Melocactus schatzlii H. Till & R. Gruber -- accepted
  Melocactus schatzlii ssp. chicamochae Fern. Alonso & Xhonneux -- accepted
  Melocactus schatzlii ssp. schatzlii H. Till & R. Gruber -- accepted
  Melocactus schulzianus Buining & Brederoo -- not accepted
  Melocactus securituberculatus Buining & Brederoo -- not accepted
  Melocactus smithii (Alexander) Buining -- accepted
  Melocactus stramineus Suringar -- accepted
  Melocactus trujilloensis Rauh & Backeb. -- not accepted
  Melocactus uebelmannii P.J. Braun -- not accepted
  Melocactus unguispinus Rauh & Backeb. -- not accepted
  Melocactus violaceus Pfeiff. -- accepted
  Melocactus violaceus ssp. margaritaceus N.P. Taylor -- accepted
  Melocactus violaceus ssp. natalensis P.J. Braun & Esteves -- not accepted
  Melocactus violaceus ssp. ritteri N.P. Taylor -- accepted
  Melocactus violaceus ssp. violaceus Pfeiff. -- accepted
  Melocactus warasii E. Pereira & Buenecker -- not accepted
  Melocactus X albicephalus Buining & Brederoo -- accepted
  Melocactus zehntneri (Britton & Rose) Leutzelb. -- accepted
  Melocactus zehntneri ssp. canescens (F. Ritter) P.J. Braun & Esteves -- not accepted
  Meyerocactus Doweld -- not accepted
  Meyerocactus horizonthalonius (Lem.) Doweld -- not accepted
  Micranthocereus Backeb. -- accepted
  Micranthocereus albicephalus (Buining & Brederoo) F. Ritter -- accepted
  Micranthocereus aureispinus F. Ritter -- not accepted
  Micranthocereus auriazureus Buining & Brederoo -- accepted
  Micranthocereus densiflorus Buining & Brederoo -- not accepted
  Micranthocereus dolichospermaticus (Buining & Brederoo) F. Ritter -- accepted
  Micranthocereus estevesii (Buining & Brederoo) F. Ritter -- accepted
  Micranthocereus flaviflorus Buining & Brederoo -- accepted
  Micranthocereus flaviflorus ssp. densiflorus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Micranthocereus haematocarpus F. Ritter -- not accepted
  Micranthocereus monteazulensis F. Ritter -- not accepted
  Micranthocereus polyanthus (Werderm.) Backeb. -- accepted
  Micranthocereus polyanthus ssp. alvinii M. Machado & Hofacker -- accepted
  Micranthocereus polyanthus ssp. polyanthus (Werderm.) Backeb. -- accepted
  Micranthocereus purpureus (Gürke) F. Ritter -- accepted
  Micranthocereus ruficeps F. Ritter -- not accepted
  Micranthocereus streckeri Van Heek & Van Criek. -- accepted
  Micranthocereus uilianus Brederoo & C.A.L. Bercht -- not accepted
  Micranthocereus violaciflorus Buining -- accepted
  Mila Britton & Rose -- accepted
  Mila albisaetacens Rauh & Backeb. -- not accepted
  Mila alboareolata Akers -- not accepted
  Mila caespitosa Britton & Rose -- accepted
  Mila caespitosa ssp. caespitosa Britton & Rose -- accepted
  Mila caespitosa ssp. nealeana (Backeb.) Donald -- not accepted
  Mila caespitosa ssp. pugionifera (Rauh & Backeb.) D.R. Hunt -- accepted
  Mila cereoides Rauh & Backeb. -- not accepted
  Mila colorea F. Ritter -- not accepted
  Mila densiseta Rauh & Backeb. -- not accepted
  Mila fortalezensis Rauh & Backeb. -- not accepted
  Mila kubeana Werderm. & Backeb. -- not accepted
  Mila lurinensis Rauh & Backeb. -- not accepted
  Mila nealeana Backeb. -- not accepted
  Mila pugionifera Rauh & Backeb. -- not accepted
  Mila sublanata Rauh & Backeb. -- not accepted
  Miqueliopuntia F. Ritter -- accepted
  Miqueliopuntia miquelii (Monv.) F. Ritter -- accepted
  Mirabella F. Ritter -- not accepted
  Mirabella albicaulis (Britton & Rose) F. Ritter -- not accepted
  Mirabella minensis F. Ritter -- not accepted
  Mitrocereus Backeb. -- not accepted
  Mitrocereus fulviceps (F.A.C. Weber) Bravo -- not accepted
  Mitrocereus militaris (Audot) Bravo -- not accepted
  Mitrocereus ruficeps (F.A.C. Weber ex Rol.-Goss.) Backeb. -- not accepted
  Monvillea Britton & Rose -- not accepted
  Monvillea adelmarii Rizzini & A. Mattos -- not accepted
  Monvillea albicaulis (Britton & Rose) R. Kiesling -- not accepted
  Monvillea alticostata F. Ritter -- not accepted
  Monvillea amazonica (K. Schum. ex Vaupel) Britton & Rose -- not accepted
  Monvillea apoloensis Cárdenas -- not accepted
  Monvillea ballivianii Cárdenas -- not accepted
  Monvillea campinensis (Backeb. & Voll) Backeb. -- not accepted
  Monvillea chacoana F. Ritter -- not accepted
  Monvillea diffusa Britton & Rose -- not accepted
  Monvillea ebenacantha F. Ritter -- not accepted
  Monvillea euchlora (F.A.C. Weber ex K. Schum.) Backeb. -- not accepted
  Monvillea haageana Backeb. -- not accepted
  Monvillea insularis (Hemsl.) Britton & Rose -- not accepted
  Monvillea jaenensis Rauh & Backeb. -- not accepted
  Monvillea kroenleinii R. Kiesling -- not accepted
  Monvillea leucantha F. Ritter -- not accepted
  Monvillea lindenzweigiana (Gürke) Backeb. -- not accepted
  Monvillea maritima Britton & Rose -- not accepted
  Monvillea minensis (F. Ritter) R. Kiesling -- not accepted
  Monvillea parapetiensis F. Ritter -- not accepted
  Monvillea phatnosperma (K. Schum.) Britton & Rose -- not accepted
  Monvillea piedadensis F. Ritter -- not accepted
  Monvillea rhodoleucantha (K. Schum.) A. Berger -- not accepted
  Monvillea saddiana Rizzini & A. Mattos -- not accepted
  Monvillea saxicola (Morong) A. Berger -- not accepted
  Monvillea smithiana (Britton & Rose) Backeb. -- not accepted
  Monvillea spegazzinii (F.A.C. Weber) Britton & Rose -- not accepted
  Morangaya G.D. Rowley -- not accepted
  Morangaya pensilis (K. Brandegee) G.D. Rowley -- not accepted
  Morawetzia Backeb. -- not accepted
  Morawetzia doelziana Backeb. -- not accepted
  Morawetzia sericata F. Ritter -- not accepted
  Morawetzia variicolor Kníze -- not accepted
  Myrtillocactus Console -- accepted
  Myrtillocactus chende (Rol.-Goss.) P.V. Heath -- not accepted
  Myrtillocactus chichipe (Rol.-Goss.) P.V. Heath -- not accepted
  Myrtillocactus chiotilla (F.A.C. Weber) P.V. Heath -- not accepted
  Myrtillocactus cochal (Orcutt) Britton & Rose -- accepted
  Myrtillocactus eichlamii Britton & Rose -- accepted
  Myrtillocactus geometrizans (Mart. ex Pfeiff.) Console -- accepted
  Myrtillocactus grandiareolatus Bravo -- not accepted
  Myrtillocactus schenckii (J.A. Purpus) Britton & Rose -- accepted
  Navajoa Croizat -- not accepted
  Navajoa fickeisenii Backeb. -- not accepted
  Navajoa peeblesiana Croizat -- not accepted
  Navajoa peeblesiana ssp. fickeisenii (Backeb. ex Hochstätter) Hochstätter -- not accepted
  Navajoa peeblesiana ssp. menzelii (Hochstätter) Hochstätter -- not accepted
  Navajoa peeblesiana var. fickeisenii Backeb. ex Hochstätter -- not accepted
  Navajoa peeblesianus Croizat -- not accepted
  Neoabbottia Britton & Rose -- not accepted
  Neoabbottia grantiana (Britton) Buxb. -- not accepted
  Neoabbottia paniculata (Lam.) Britton & Rose -- not accepted
  Neobesseya Britton & Rose -- not accepted
  Neobesseya asperispina (Boed.) Boed. -- not accepted
  Neobesseya macdougallii (Alexander) Kladiwa -- not accepted
  Neobesseya missouriensis (Sweet) Britton & Rose -- not accepted
  Neobesseya notesteinii (Britton) Britton & Rose -- not accepted
  Neobesseya roseiflora Lahman ex Turner -- not accepted
  Neobesseya similis (Engelm. & A. Gray) Britton & Rose -- not accepted
  Neobesseya wissmannii (Hildm. ex K. Schum.) Britton & Rose -- not accepted
  Neobuxbaumia Backeb. -- accepted
  Neobuxbaumia euphorbioides (Haw.) Buxb. -- accepted
  Neobuxbaumia laui (P.V. Heath) D.R. Hunt -- not accepted
  Neobuxbaumia macrocephala (F.A.C. Weber ex K. Schum.) E.Y. Dawson -- accepted
  Neobuxbaumia mezcalaensis (Bravo) Backeb. -- accepted
  Neobuxbaumia multiareolata (E.Y. Dawson) Bravo, Scheinvar & Sánchez-Mej. -- not accepted
  Neobuxbaumia polylopha (DC.) Backeb. -- accepted
  Neobuxbaumia sanchezmejoradae A.B. Lau -- accepted
  Neobuxbaumia scoparia (Polseg.) Backeb. -- accepted
  Neobuxbaumia squamulosa Scheinvar & Sánchez-Mej. -- accepted
  Neobuxbaumia tetetzo (J.M. Coult.) Backeb. -- accepted
  Neocardenasia Backeb. -- not accepted
  Neocardenasia herzogiana Backeb. -- not accepted
  Neochilenia Backeb. -- not accepted
  Neochilenia andreaeana Backeb. -- not accepted
  Neochilenia atra Backeb. -- not accepted
  Neochilenia carneoflora Kilian -- not accepted
  Neochilenia deherdtiana Backeb. -- not accepted
  Neochilenia eriocephala Backeb. -- not accepted
  Neochilenia imitans Backeb. -- not accepted
  Neochilenia lembckei Backeb. -- not accepted
  Neochilenia monte-amargensis Backeb. -- not accepted
  Neochilenia neofusca Backeb. -- not accepted
  Neochilenia neoreichei Backeb. -- not accepted
  Neochilenia pseudoreichei Lembcke & Backeb. -- not accepted
  Neodawsonia Backeb. -- not accepted
  Neodawsonia nizandensis Bravo & T. MacDoug. -- not accepted
  Neodawsonia totolapensis Bravo & T. MacDoug. -- not accepted
  Neoevansia W.T. Marshall -- not accepted
  Neoevansia lazaro-cardenasii J.L. Contr., J. Jiménez Ram., Sánchez-Mej. & C.A. Toledo -- not accepted
  Neoevansia striata (Brandegee) Sánchez-Mej. -- not accepted
  Neoevansia zopilotensis (J. Meyrán) Sánchez-Mej. -- not accepted
  Neogomesia agavoides Castañeda -- not accepted
  Neolloydia Britton & Rose -- accepted
  Neolloydia beguinii (F.A.C. Weber ex K. Schum.) Britton & Rose -- not accepted
  Neolloydia clavata (Scheidw.) Britton & Rose -- not accepted
  Neolloydia conoidea (DC.) Britton & Rose -- accepted -- Biznaga-cónica, Chihuahuan beehive
  Neolloydia durangensis (Runge) L.D. Benson -- not accepted
  Neolloydia erectocentra (J.M. Coult.) L.D. Benson -- not accepted
  Neolloydia erectocentra var. acunensis (W.T. Marshall) L.D. Benson -- not accepted
  Neolloydia gautii L.D. Benson -- not accepted -- Gaut's butterfly cactus
  Neolloydia intertexta (Engelm.) L.D. Benson -- not accepted
  Neolloydia intertexta var. dasyacantha (Engelm.) L.D. Benson -- not accepted
  Neolloydia johnsonii (Parry ex Engelm.) L.D. Benson -- not accepted
  Neolloydia johnsonii var. lutescens (Parish) W.T. Marshall ex R.G. Engard -- not accepted
  Neolloydia laui (Glass & R.A. Foster) E.F. Anderson -- not accepted
  Neolloydia mariposensis (Hester) L.D. Benson -- not accepted -- Lloyd's Mariposa cactus
  Neolloydia matehualensis Backeb. -- accepted
  Neolloydia odorata (Boed.) Backeb. -- not accepted
  Neolloydia pulleineana Backeb. -- not accepted
  Neolloydia unguispina (Engelm.) L.D. Benson -- not accepted
  Neolloydia warnockii L.D. Benson -- not accepted
  Neolobivia Y. Itô -- not accepted
  Neolobivia echinata (Rausch) F. Ritter -- not accepted
  Neolobivia hertrichiana (Backeb.) F. Ritter -- not accepted
  Neolobivia incaica (Backeb.) F. Ritter -- not accepted
  Neolobivia minuta (F. Ritter) F. Ritter -- not accepted
  Neolobivia vilcabambae (F. Ritter) F. Ritter -- not accepted
  Neolobivia winteriana (F. Ritter) F. Ritter -- not accepted
  Neomammillaria Britton & Rose -- not accepted
  Neomammillaria multiformis Britton & Rose -- not accepted
  Neomammillaria nivosa (Link ex Pfeiff.) Britton & Rose -- not accepted
  Neomammillaria rekoi Britton & Rose -- not accepted
  Neomammillaria similis (Engelm.) Britton & Rose ex Rydb. -- not accepted
  Neoporteria Britton & Rose -- not accepted
  Neoporteria andreaeana (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoporteria aricensis (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria armata (F. Ritter) Krainz -- not accepted
  Neoporteria aspillagai (Söhrens) Backeb. -- not accepted
  Neoporteria atrispinosa (Backeb.) Backeb. -- not accepted
  Neoporteria backebergii Donald & G.D. Rowley -- not accepted
  Neoporteria bicolor (Akers & Buining) Donald -- not accepted
  Neoporteria bulbocalyx (Werderm.) Donald -- not accepted
  Neoporteria calderiana (F. Ritter) Donald -- not accepted
  Neoporteria carrizalensis (F. Ritter) A.E. Hoffm. -- not accepted
  Neoporteria castanea F. Ritter -- not accepted
  Neoporteria castaneoides (Cels) Werderm. -- not accepted
  Neoporteria cephalophora (Backeb.) Backeb. -- not accepted
  Neoporteria chilensis (Hildm. ex K. Schum.) Britton & Rose -- not accepted
  Neoporteria choapensis (F. Ritter) Donald -- not accepted
  Neoporteria chorosensis (F. Ritter) Donald -- not accepted
  Neoporteria clavata (Söhrens) Werderm. -- not accepted
  Neoporteria coimasensis F. Ritter -- not accepted
  Neoporteria confinis (F. Ritter) Donald -- not accepted
  Neoporteria crispa (F. Ritter) Donald -- not accepted
  Neoporteria curvispina (Bertero ex Colla) Donald & G.D. Rowley -- not accepted
  Neoporteria deherdtiana (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoporteria dimorpha (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria dubia (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoporteria eriocephala (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoporteria eriosyzoides (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria esmeraldana (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria fusca (Muehlenpf.) Britton & Rose -- not accepted
  Neoporteria gerocephala Y. Itô -- not accepted
  Neoporteria hankeana (Forst.) Donald & G.D. Rowley -- not accepted
  Neoporteria heteracantha (Kreuz. & Buining) Backeb. -- not accepted
  Neoporteria horrida (J. Rémy ex Gay) D.R. Hunt -- not accepted
  Neoporteria huascensis (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria intermedia (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria iquiquensis (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria islayensis (C.F. Först.) Donald & G.D. Rowley -- not accepted
  Neoporteria jussieui (Monv. ex Salm-Dyck) Britton & Rose -- not accepted
  Neoporteria krainziana (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria litoralis F. Ritter -- not accepted
  Neoporteria marksianus (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria megliolii (Rausch) Donald -- not accepted
  Neoporteria melanacantha (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoporteria microsperma F. Ritter -- not accepted
  Neoporteria monte-amargensis (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoporteria multicolor F. Ritter -- not accepted
  Neoporteria napina (Phil.) Backeb. -- not accepted
  Neoporteria nidus (Söhrens) Britton & Rose -- not accepted
  Neoporteria nigricans (Linke) Britton & Rose -- not accepted
  Neoporteria odieri (Lem. ex Salm-Dyck) Backeb. -- not accepted
  Neoporteria paucicostata (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria pilispina (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria polyraphis (Pfeiff. ex Salm-Dyck) Backeb. -- not accepted
  Neoporteria recondita (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria reichei (K. Schum.) Backeb. -- not accepted
  Neoporteria reichii (K. Schum.) Backeb. -- not accepted
  Neoporteria residua (F. Ritter & Buining) Donald & G.D. Rowley -- not accepted
  Neoporteria ritteri Donald & G.D. Rowley -- not accepted
  Neoporteria robusta F. Ritter -- not accepted
  Neoporteria rupicola (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria sanjuanensis (Speg.) Donald & G.D. Rowley -- not accepted
  Neoporteria scoparia (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria senilis (Phil.) Backeb. -- not accepted
  Neoporteria setiflora (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoporteria setosiflora (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria simulans (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria sociabilis F. Ritter -- not accepted
  Neoporteria strausiana (K. Schum.) Donald & G.D. Rowley -- not accepted
  Neoporteria subaiana (Backeb.) Donald & G.D.Rowley -- not accepted
  Neoporteria subcylindrica (Backeb.) Backeb. -- not accepted
  Neoporteria subgibbosa (Haw.) Britton & Rose -- not accepted
  Neoporteria taltalensis Hutchison -- not accepted
  Neoporteria totoralensis (F. Ritter) Donald -- not accepted
  Neoporteria tuberisulcata (Jacobi) Donald -- not accepted
  Neoporteria umadeave (Fric ex Kreuz.) Donald & G.D. Rowley -- not accepted
  Neoporteria vallenarensis (F. Ritter) A.E. Hoffm. -- not accepted
  Neoporteria villicumensis (Rausch) Donald -- not accepted
  Neoporteria villosa (Monv.) A. Berger -- not accepted
  Neoporteria volliana (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoporteria wagenknechtii F. Ritter -- not accepted
  Neoporteria woutersiana (Backeb.) Donald & G.D. Rowley -- not accepted
  Neoraimondia Britton & Rose -- accepted
  Neoraimondia arequipensis (Meyen) Backeb. -- accepted
  Neoraimondia aticensis Rauh & Backeb. -- not accepted
  Neoraimondia herzogiana (Backeb.) Buxb. & Krainz -- accepted
  Neoraimondia macrostibas Britton & Rose -- not accepted
  Neoraimondia roseiflora (Backeb.) Backeb. -- not accepted
  Neowerdermannia Fric -- accepted
  Neowerdermannia chilensis Backeb. -- accepted
  Neowerdermannia chilensis ssp. peruviana (F. Ritter) Ostolaza -- not accepted
  Neowerdermannia peruviana F. Ritter -- not accepted
  Neowerdermannia vorwerkii Fric -- accepted
  Nopalea Salm-Dyck -- accepted
  Nopalea auberi (Pfeiff.) Salm-Dyck -- accepted
  Nopalea cochenillifera (L.) Salm-Dyck -- accepted -- Nopal de cochinilla
  Nopalea dejecta (Salm-Dyck) Salm-Dyck -- accepted
  Nopalea gaumeri Britton & Rose -- not accepted
  Nopalea guatemalensis Rose -- not accepted
  Nopalea inaperta A. Schott ex Griffiths -- accepted
  Nopalea lutea Rose -- not accepted
  Nopalea nuda Backeb. -- not accepted
  Nopalxochia Britton & Rose -- not accepted
  Nopalxochia ackermannii (Haw.) F.M. Knuth -- not accepted
  Nopalxochia conzattiana T. MacDoug. -- not accepted
  Nopalxochia macdougallii (Alexander) Bravo -- not accepted
  Nopalxochia phyllanthoides (DC.) Britton & Rose -- not accepted
  Normanbokea Kladiwa & Buxb. -- not accepted
  Normanbokea pseudopectinata (Backeb.) Kladiwa & Buxb. -- not accepted
  Normanbokea valdeziana (H. Moeller) Kladiwa & Buxb. -- not accepted
  Notocactus (K. Schum.) Fric -- not accepted
  Notocactus acuatus (Link & Otto) S. Theun. -- not accepted
  Notocactus acutus F. Ritter -- not accepted
  Notocactus agnetae Vliet -- not accepted
  Notocactus alacriportanus (Backeb. & Voll) Buxb. -- not accepted
  Notocactus allosiphon Marchesi -- not accepted
  Notocactus amplicostatus (F. Ritter) S. Theun. -- not accepted
  Notocactus apricus (Arechav.) A. Berger -- not accepted
  Notocactus arachnitis F. Ritter -- not accepted
  Notocactus arechavaletae (Speg.) Herter -- not accepted
  Notocactus arnostianus Lisal & Kolarik -- not accepted
  Notocactus blaauwianus Vliet -- not accepted
  Notocactus brederooianus Prestlé -- not accepted
  Notocactus brevihamatus (W. Haage ex Backeb.) Krainz -- not accepted
  Notocactus buiningii Buxb. -- not accepted
  Notocactus caespitosus (Speg.) Backeb. -- not accepted
  Notocactus calvescens N. Gerloff & A.D. Nilson -- not accepted
  Notocactus campestrensis F. Ritter -- not accepted
  Notocactus carambeiensis Buining & Brederoo -- not accepted
  Notocactus catarinensis (F. Ritter) Scheinvar -- not accepted
  Notocactus catarinensis (F. Ritter) S. Theun. -- not accepted
  Notocactus concinnus (Monv.) A. Berger -- not accepted
  Notocactus crassigibbus F. Ritter -- not accepted
  Notocactus cristatoides F. Ritter -- not accepted
  Notocactus eremiticus F. Ritter -- not accepted
  Notocactus erythracanthus H. Schloss. & Brederoo -- not accepted
  Notocactus eugeniae Vliet -- not accepted
  Notocactus ferrugineus H. Schloss. -- not accepted
  Notocactus floricomus (Arechav.) A. Berger -- not accepted
  Notocactus fuscus F. Ritter -- not accepted
  Notocactus gibberulus Prestlé -- not accepted
  Notocactus glaucinus F. Ritter -- not accepted
  Notocactus glomeratus Menges ex N. Gerloff -- not accepted
  Notocactus graessneri (K. Schum.) A. Berger -- not accepted
  Notocactus grandiensis Bergner -- not accepted
  Notocactus gutierrezii W.R. Abraham -- not accepted
  Notocactus harmonianus F. Ritter -- not accepted
  Notocactus haselbergii (Forst.) A. Berger -- not accepted
  Notocactus herteri (Werderm.) Buining & Kreuz. -- not accepted
  Notocactus horstii F. Ritter -- not accepted
  Notocactus hypocrateriformis (Otto & A. Dietr.) Herter -- not accepted
  Notocactus ibicuiensis Prestlé -- not accepted
  Notocactus incomptus N. Gerloff -- not accepted
  Notocactus joadii (Hook. f.) Herter -- not accepted
  Notocactus laetevirens F. Ritter -- not accepted
  Notocactus laetivirens F. Ritter -- not accepted
  Notocactus leninghausii (K. Schum.) A. Berger -- not accepted
  Notocactus leprosorum (F. Ritter) S. Theun. -- not accepted
  Notocactus linkii (Lehm.) Herter -- not accepted
  Notocactus longispinus (F. Ritter) S. Theun. -- not accepted
  Notocactus macambarensis Prestlé -- not accepted
  Notocactus maldonadensis (Herter) Herter -- not accepted
  Notocactus mammulosus (Lem.) A. Berger -- not accepted
  Notocactus megalanthus H. Schloss. & Brederoo -- not accepted
  Notocactus memorialis Prestlé -- not accepted
  Notocactus meonacanthus Prestlé -- not accepted
  Notocactus minimus Fric & Kreuz. ex Buining -- not accepted
  Notocactus minusculus Hofacker & K. Herm -- not accepted
  Notocactus mueller-melchersii Fric ex Backeb. -- not accepted
  Notocactus multicostatus Buining & Brederoo -- not accepted
  Notocactus muricatus (Otto ex Pfeiff. ) A. Berger -- not accepted
  Notocactus neobuenekeri F. Ritter -- not accepted
  Notocactus neohorstii S. Theun. -- not accepted
  Notocactus olimarensis Prestlé -- not accepted
  Notocactus oxycostatus Buining & Brederoo -- not accepted
  Notocactus paulus H. Schloss. & Brederoo -- not accepted
  Notocactus permutatus F. Ritter -- not accepted
  Notocactus polyacanthus (Link & Otto) S. Theun. -- not accepted
  Notocactus prolifer (F. Ritter) S. Theun. -- not accepted
  Notocactus pseudoherteri Buining -- not accepted
  Notocactus pulvinatus Vliet -- not accepted
  Notocactus purpureus F. Ritter -- not accepted
  Notocactus rauschii Vliet -- not accepted
  Notocactus rechensis Buining -- not accepted
  Notocactus ritterianus Lisal & Kolarik -- not accepted
  Notocactus roseiflorus H. Schloss. & Brederoo -- not accepted
  Notocactus roseoluteus Vliet -- not accepted
  Notocactus rubrigemmatus W.R. Abraham -- not accepted
  Notocactus rudibuenekeri W.R. Abraham -- not accepted
  Notocactus ruoffii N. Gerloff -- not accepted
  Notocactus rutilans Däniker & Krainz -- not accepted
  Notocactus schaeferianus (W.R. Abraham & J. Theun.) Havlícek -- not accepted
  Notocactus schumannianus (Nicolai) A. Berger -- not accepted
  Notocactus scopa (Link & Otto) A. Berger -- not accepted
  Notocactus securituberculatus F. Ritter -- not accepted
  Notocactus sellowii (Link & Otto) S. Theun. -- not accepted
  Notocactus spinibarbis F. Ritter -- not accepted
  Notocactus stockingeri Prestlé -- not accepted
  Notocactus submammulosus (Lem.) Backeb. -- not accepted
  Notocactus succineus F. Ritter -- not accepted
  Notocactus tabularis (Cels ex Rümpler) A. Berger -- not accepted
  Notocactus tenuicylindricus F. Ritter -- not accepted
  Notocactus tenuispinus (Link & Otto) Herter -- not accepted
  Notocactus uebelmannianus Buining -- not accepted
  Notocactus uebelmannianus var. pleiocephalus N. Gerloff & Königs -- not accepted
  Notocactus uruguayus (Arechev.) Herter -- not accepted
  Notocactus vanvlietii Rausch -- not accepted
  Notocactus veenianus Vliet -- not accepted
  Notocactus villa-velhensis var. carambeiensis (Buining & Brederoo) N. Gerloff -- not accepted
  Notocactus werdermannianus Herter -- not accepted
  Notocactus winkleri Vliet -- not accepted
  Nyctocereus (A. Berger) Britton & Rose -- not accepted
  Nyctocereus castellanosii Scheinvar -- not accepted
  Nyctocereus chontalensis Alexander -- not accepted
  Nyctocereus guatemalensis Britton & Rose -- not accepted
  Nyctocereus hirschtianus (K. Schum.) Britton & Rose -- not accepted
  Nyctocereus neumannii (K. Schum.) Britton & Rose -- not accepted
  Nyctocereus oaxacensis Britton & Rose -- not accepted
  Nyctocereus serpentinus (Lag. & Rodr.) Britton & Rose -- not accepted
  Obregonia Fric -- accepted
  Obregonia denegrii Fric -- accepted
  Oehmea Buxb. -- not accepted
  Oehmea beneckei (Ehrenb.) Buxb. -- not accepted
  Opuntia Mill. -- accepted -- figues de Barbarie, pricklypear, cholla
  Opuntia abjecta Small ex Britton & Rose -- not accepted
  Opuntia abyssi Hester -- not accepted
  Opuntia acanthocarpa Engelm. & J.M. Bigelow -- not accepted -- Cholla espinosa, buckhorn cholla
  Opuntia acanthocarpa ssp. ganderi C.B. Wolf -- not accepted
  Opuntia acanthocarpa var. ganderi (C.B. Wolf) L.D. Benson -- not accepted -- Gander's buckhorn cholla
  Opuntia aciculata Griffiths -- accepted
  Opuntia alcahes F.A.C. Weber -- not accepted
  Opuntia ammophila Small -- not accepted
  Opuntia anacantha Speg. -- accepted
  Opuntia anteojoensis Pinkava -- not accepted
  Opuntia antillana Britton & Rose -- not accepted
  Opuntia apurimacensis (F. Ritter) R. Crook & Mottram -- accepted
  Opuntia arborescens Engelm. -- not accepted
  Opuntia arbuscula Engelm. -- not accepted -- Cholla arbusto, Arizona pencil cholla, pencil cholla
  Opuntia arcei Cárdenas -- accepted
  Opuntia arechavaletae Speg. -- accepted
  Opuntia arizonica Griffiths -- not accepted
  Opuntia assumptionis K. Schum. -- accepted
  Opuntia atrispina Griffiths -- accepted -- Nopal calvo, border pricklypear
  Opuntia atrocapensis Small -- not accepted
  Opuntia aurantiaca Lindl. -- accepted -- tiger-pear, jointed pricklypear
  Opuntia aurea E.M. Baxter -- accepted -- golden pricklypear
  Opuntia aureispina (S. Brack & K.D. Heil) Pinkava & B.D. Parfitt -- accepted -- Rio Grande pricklypear, golden-spined prickly-pear
  Opuntia bahiensis Britton & Rose -- not accepted
  Opuntia ballii Rose -- not accepted
  Opuntia barkleyana (Daston) G.D. Rowley -- not accepted
  Opuntia basilaris Engelm. & J.M. Bigelow -- accepted -- Nopal del castor, beavertail pricklypear
  Opuntia basilaris var. aurea (E.M. Baxter) W.T. Marshall -- not accepted -- golden pricklypear
  Opuntia basilaris var. basilaris Engelm. & J.M. Bigelow -- accepted -- beavertail pricklypear
  Opuntia basilaris var. brachyclada (Griffiths) Munz -- accepted -- beavertail pricklypear, short-jointed beavertail cactus
  Opuntia basilaris var. longiareolata (Clover & Jotter) L.D. Benson -- accepted -- beavertail pricklypear, Grand Canyon beavertail cactus
  Opuntia basilaris var. ramosa Parish -- not accepted
  Opuntia basilaris var. treleasei (J.M. Coult.) J.M. Coult. ex Toumey -- accepted -- Bakersfield cactus, Trelease's beavertail pricklypear
  Opuntia basilaris var. whitneyana (E.M. Baxter) E.M. Baxter ex W.T. Marshall -- not accepted
  Opuntia basilaris var. woodburyi W.H. Earle -- not accepted -- Woodbury's beavertail pricklypear
  Opuntia bentonii Griffiths -- not accepted
  Opuntia bigelovii Engelm. -- not accepted -- Cholla velas de Coyote, teddybear cholla
  Opuntia blancii (Backeb.) G.D. Rowley -- not accepted
  Opuntia boldinghii Britton & Rose -- accepted
  Opuntia boliviana Salm-Dyck -- not accepted
  Opuntia brachyarthra Engelm. & J.M. Bigelow -- not accepted
  Opuntia brachyclada Griffiths -- not accepted
  Opuntia brachyclada ssp. humistrata (Griffiths) Wiggins & C.B. Wolf -- not accepted
  Opuntia brachyrhopalica (Daston) G.D. Rowley -- not accepted
  Opuntia bradleyi G.D. Rowley -- not accepted
  Opuntia brasiliensis (Willd.) Haw. -- not accepted -- Brazilian pricklypear
  Opuntia brasiliensis ssp. bahiensis (Britton & Rose) P.J. Braun & Esteves -- not accepted
  Opuntia brasiliensis ssp. subacarpa (Rizzini & A. Mattos) P.J. Braun & Esteves -- not accepted
  Opuntia bravoana E.M. Baxter -- accepted
  Opuntia brevispina H.E. Gates -- not accepted
  Opuntia bulbispina Engelm. -- not accepted
  Opuntia burrageana Britton & Rose -- not accepted
  Opuntia calcicola Wherry -- not accepted
  Opuntia californica (Torr. & A. Gray) Coville -- not accepted -- California pricklypear
  Opuntia californica Engelm. -- not accepted
  Opuntia camanchica Engelm. & J.M. Bigelow -- not accepted
  Opuntia canada Griffiths -- not accepted
  Opuntia caracassana Salm-Dyck -- accepted
  Opuntia cardenche Griffiths -- not accepted
  Opuntia caribaea Britton & Rose -- not accepted
  Opuntia chaffeyi Britton & Rose -- accepted
  Opuntia chisosensis (M.S. Anthony) D.J. Ferguson -- accepted -- Chisos Mountain pricklypear
  Opuntia chlorotica Engelm. & J.M. Bigelow -- accepted -- Nopal verdoso, dollarjoint pricklypear, pancake pricklypear
  Opuntia chlorotica var. gosseliniana (F.A.C. Weber) D.J. Ferguson -- not accepted
  Opuntia chlorotica var. santa-rita Griffiths & Hare -- not accepted
  Opuntia cholla F.A.C. Weber -- not accepted
  Opuntia chuquisacana Cárdenas -- not accepted
  Opuntia cineracea Wiggins -- not accepted
  Opuntia ciribe Engelm. ex J.M. Coult. -- not accepted
  Opuntia compressa J.F. Macbr. -- not accepted
  Opuntia compressa var. allairei (Griffiths) D. Weniger -- not accepted
  Opuntia compressa var. ammophila (Small) L.D. Benson -- not accepted
  Opuntia compressa var. fuscoatra (Engelm.) D. Weniger -- not accepted
  Opuntia compressa var. grandiflora (Engelm.) D. Weniger -- not accepted
  Opuntia compressa var. macrorhiza (Engelm.) L.D. Benson -- not accepted
  Opuntia compressa var. microsperma (Engelm.) L.D. Benson -- not accepted
  Opuntia compressa var. stenochila (Engelm. & J.M. Bigelow) D. Weniger -- not accepted
  Opuntia covillei Britton & Rose -- not accepted
  Opuntia covillei var. piercei (Fosberg) Munz -- not accepted
  Opuntia crispicrinita (Rauh & Backeb.) G.D. Rowley -- not accepted
  Opuntia curassavica (L.) Mill. -- accepted
  Opuntia cylindrica (Lam.) DC. -- not accepted
  Opuntia cylindrolanata (Rauh & Backeb.) G.D. Rowley -- not accepted
  Opuntia dactylifera Vaupel -- not accepted
  Opuntia davisii Engelm. & J.M. Bigelow -- not accepted
  Opuntia decumbens Salm-Dyck -- accepted
  Opuntia delaetiana (F.A.C. Weber) Vaupel -- accepted
  Opuntia dillei Griffiths -- not accepted
  Opuntia dillenii (Ker Gawl.) Haw. -- not accepted
  Opuntia drummondii Graham -- not accepted
  Opuntia dulcis Engelm. -- not accepted
  Opuntia echinocarpa Engelm. & J.M. Bigelow -- not accepted -- Cholla plateada, silver cholla, golden cholla
  Opuntia echinocarpa var. major Engelm. & J.M. Bigelow -- not accepted
  Opuntia echinocarpa var. parkeri (Engelm.) J.M. Coult. -- not accepted
  Opuntia elata Salm-Dyck -- accepted
  Opuntia elatior Mill. -- accepted
  Opuntia emoryi Engelm. -- not accepted
  Opuntia engelmannii Salm-Dyck -- not accepted -- Nopal de Engelmann, cactus apple, Engelmann's pricklypear
  Opuntia engelmannii var. aciculata (Griffiths) D. Weniger -- not accepted
  Opuntia engelmannii var. alta (Griffiths) D. Weniger -- not accepted
  Opuntia engelmannii var. cacanapa (Griffiths) D. Weniger -- not accepted
  Opuntia engelmannii var. cycloides Engelm. & J.M. Bigelow -- not accepted
  Opuntia engelmannii var. dulcis (Engelm.) Engelm. ex K. Schum. -- not accepted
  Opuntia engelmannii var. engelmannii Salm-Dyck -- not accepted -- cactus apple, Engelmann's pricklypear, desert pricklypear
  Opuntia engelmannii var. flavispina (L.D. Benson) B.D. Parfitt & Pinkava -- accepted -- cactus apple, Engelmann's pricklypear
  Opuntia engelmannii var. flexispina (Griffiths) B.D. Parfitt & Pinkava -- not accepted
  Opuntia engelmannii var. lindheimeri (Engelm.) B.D. Parfitt & Pinkava -- accepted -- Texas pricklypear
  Opuntia engelmannii var. linguiformis (Griffiths) B.D. Parfitt & Pinkava -- accepted -- cactus apple, tongue pricklypear
  Opuntia engelmannii var. littoralis Engelm. -- not accepted
  Opuntia engelmannii var. texana (Griffiths) D. Weniger -- not accepted
  Opuntia engelmannii var. wootonii (Griffiths) Fosberg -- not accepted
  Opuntia erinacea var. aurea (E.M. Baxter) S.L. Welsh -- not accepted
  Opuntia exaltata A. Berger -- not accepted
  Opuntia excelsa Sánchez-Mej. -- accepted
  Opuntia falcata Ekman & Werderm. -- not accepted
  Opuntia ficus-indica (L.) Mill. -- accepted -- Nopal de Castilla, tuna cactus, Indian-fig
  Opuntia flexospina Griffiths -- not accepted
  Opuntia floccosa Salm-Dyck -- not accepted
  Opuntia fosbergii C.B. Wolf -- not accepted -- Hoffmann's teddybear cholla
  Opuntia fragilis (Nutt.) Haw. -- accepted -- brittle cactus, fragile cactus, jumping cactus, little pricklypear, brittle pricklypear
  Opuntia fragilis ssp. brachyarthra (Engelm. & J.M. Bigelow) W.A. Weber -- not accepted
  Opuntia fragilis var. denudata E.F. Wiegand & Backeb. -- not accepted
  Opuntia fulgida Engelm. -- not accepted -- jumping cholla, Cholla brillante
  Opuntia fuliginosa Griffiths -- accepted
  Opuntia galapageia Hensl. -- accepted
  Opuntia gilvescens Griffiths -- not accepted
  Opuntia gosseliniana F.A.C. Weber -- accepted -- violet pricklypear
  Opuntia gracilicylindrica (E.F. Wiegand & Backeb.) G.D. Rowley -- not accepted
  Opuntia grandiflora Engelm. -- not accepted
  Opuntia haitiensis Britton -- not accepted
  Opuntia heteromorpha Phil. -- not accepted
  Opuntia hirschii (Backeb.) G.D. Rowley -- not accepted
  Opuntia huajuapensis Bravo -- accepted
  Opuntia humifusa (Raf.) Raf. -- accepted -- Nopal del este, devil's-tongue, pricklypear
  Opuntia humifusa var. ammophila (Small) L.D. Benson -- accepted -- devil's-tongue
  Opuntia humifusa var. humifusa (Raf.) Raf. -- accepted -- devil's-tongue, pricklypear
  Opuntia hyptiacantha F.A.C. Weber -- accepted
  Opuntia hystricina Engelm. & J.M. Bigelow -- not accepted -- Nopal puerco espín
  Opuntia hystrix Griseb. -- not accepted
  Opuntia ignescens Vaupel -- not accepted
  Opuntia imbricata (Haw.) DC. -- not accepted -- Cholla coyonoxtle, tree cholla, walkingstick cholla
  Opuntia imbricata var. arborescens (Engelm.) A.D. Zimmerman -- not accepted
  Opuntia imbricata var. vexans (Griffiths) D. Weniger -- not accepted
  Opuntia imbricata var. viridiflora (Britton & Rose) D. Weniger -- not accepted
  Opuntia impedata Small -- not accepted
  Opuntia invicta Brandegee -- not accepted
  Opuntia kleiniae DC. -- not accepted -- Cholla tasajillo macho, candle cholla, Klein pencil cholla
  Opuntia kleiniae var. tetracantha (Toumey) W.T. Marshall -- not accepted
  Opuntia laevis J.M. Coult. -- not accepted
  Opuntia lagopus K. Schum. -- not accepted
  Opuntia lagunae E.M. Baxter -- accepted
  Opuntia lasiacantha Pfeiff. -- accepted
  Opuntia lata Small -- not accepted
  Opuntia leptocarpa MacKensen -- not accepted
  Opuntia leptocaulis DC. -- not accepted -- Cholla alfilerillo, Christmas cactus, tesajo cactus
  Opuntia leucotricha DC. -- accepted -- Nopal duraznillo, arborescent pricklypear
  Opuntia lindheimeri Engelm. -- not accepted -- Nopal arrastrado
  Opuntia lindheimeri var. chisosensis M.S. Anthony -- not accepted
  Opuntia lindheimeri var. lehmannii L.D. Benson -- not accepted
  Opuntia lindheimeri var. linguiformis (Griffiths) L.D. Benson -- not accepted -- cow-tongue prickly-pear
  Opuntia lindheimeri var. tricolor (Griffiths) L.D. Benson -- not accepted
  Opuntia lindsayi Rebman -- not accepted
  Opuntia linguiformis Griffiths -- not accepted
  Opuntia littoralis (Engelm.) Cockerell -- accepted -- Nopal del litoral, coastal pricklypear
  Opuntia lloydii Rose -- not accepted
  Opuntia longiareolata Clover & Jotter -- not accepted
  Opuntia lutea (Rose) D.R. Hunt -- not accepted
  Opuntia mackensenii Rose -- not accepted
  Opuntia macracantha Griseb. -- not accepted
  Opuntia macrantha Gibbes -- not accepted
  Opuntia macrocentra Engelm. -- accepted -- Nopal violaceo, purple pricklypear
  Opuntia macrocentra var. aureispina S. Brack & K.D. Heil -- not accepted
  Opuntia macrorhiza Engelm. -- accepted -- Nopal raizudo, twistspine pricklypear, grassland pricklypear, plains twistspine pricklypear
  Opuntia magnifica Small -- not accepted
  Opuntia mamillata A. Schott ex Engelm. -- not accepted -- Nopal de mamilas
  Opuntia marenae S.H. Parsons -- not accepted
  Opuntia megacarpa Griffiths -- not accepted
  Opuntia megapotamica Arechav. -- accepted
  Opuntia megarrhiza Rose -- accepted
  Opuntia mesacantha var. vaseyi J.M. Coult. -- not accepted
  Opuntia microdasys (Lehm.) Pfeiff. -- accepted
  Opuntia millspaughii Britton -- not accepted
  Opuntia missouriensis var. trichophora Engelm. & J.M. Bigelow -- not accepted
  Opuntia moelleri A. Berger -- not accepted
  Opuntia mojavensis Engelm. & J.M. Bigelow -- not accepted
  Opuntia molesta Brandegee -- not accepted
  Opuntia monacantha (Willd.) Haw. -- accepted -- common pricklypear
  Opuntia moniliformis (L.) Haw. ex Steud. -- not accepted -- tuna
  Opuntia munzii C.B. Wolf -- not accepted -- Munz's cholla, Munz cholla
  Opuntia nashii Britton -- not accepted
  Opuntia neoargentina (Backeb.) G.D. Rowley -- not accepted
  Opuntia nitens Small -- not accepted
  Opuntia occidentalis var. covillei (Britton & Rose) Munz -- not accepted
  Opuntia occidentalis var. littoralis (Engelm.) Parish -- not accepted
  Opuntia occidentalis var. megacarpa (Griffiths) Munz -- not accepted
  Opuntia occidentalis var. piercei (Fosberg) Munz -- not accepted
  Opuntia occidentalis var. vaseyi (J.M. Coult.) Munz -- not accepted
  Opuntia ochrocentra Small -- not accepted
  Opuntia opuntia (L.) H. Karst -- not accepted
  Opuntia oricola Philbrick -- accepted -- Nopal de montaña, chaparral pricklypear
  Opuntia pachypus K. Schum. -- not accepted
  Opuntia pallida Rose -- not accepted
  Opuntia parryi Engelm. -- not accepted -- Cholla de California, brownspined pricklypear
  Opuntia parryi var. serpentina (Engelm.) L.D. Benson -- not accepted -- serpentine cholla, snake cholla
  Opuntia parviclada S. Arias & Gama -- accepted
  Opuntia phaeacantha Engelm. -- accepted -- Nopal pardo, tulip pricklypear, brownspine pricklypear
  Opuntia phaeacantha var. brunnea (Engelm.) Engelm. -- not accepted
  Opuntia phaeacantha var. discata (Griffiths) L.D. Benson & Walk. -- not accepted
  Opuntia phaeacantha var. flavispina L.D. Benson -- not accepted
  Opuntia phaeacantha var. mojavensis (Engelm. & J.M. Bigelow) Fosberg -- not accepted
  Opuntia phaeacantha var. nigricans (Engelm.) Engelm. -- not accepted
  Opuntia phaeacantha var. piercei Fosberg -- not accepted
  Opuntia phaeacantha var. spinosibacca (M.S. Anthony) L.D. Benson -- not accepted
  Opuntia phaeacantha var. tenuispina (Engelm.) D. Weniger -- not accepted
  Opuntia picardae Urb. -- not accepted
  Opuntia pilifera F.A.C. Weber -- accepted
  Opuntia pinkavae B.D. Parfitt -- accepted -- Pinkava's pricklypear
  Opuntia pisciformis Small ex Britton & Rose -- not accepted
  Opuntia pittieri Britton & Rose -- accepted
  Opuntia plumbea Rose -- not accepted -- Nopal enano
  Opuntia polyacantha Haw. -- accepted -- plains pricklypear
  Opuntia polyacantha var. arenaria (Engelm.) B.D. Parfitt -- accepted
  Opuntia polyacantha var. erinacea (Engelm. & J.M. Bigelow) B.D. Parfitt -- accepted
  Opuntia polyacantha var. hystricina (Engelm. & J.M. Bigelow) B.D. Parfitt -- accepted
  Opuntia polyacantha var. nicholii (L.D. Benson) B.D. Parfitt -- accepted
  Opuntia polyacantha var. polyacantha Haw. -- accepted -- hairspine pricklypear
  Opuntia polyacantha var. trichophora (Engelm. & J.M. Bigelow) J.M. Coult. -- not accepted -- hairspine pricklypear, threadspine pricklypear
  Opuntia posnanskyana Cárdenas -- not accepted
  Opuntia pottsii Salm-Dyck -- accepted
  Opuntia prolifera Engelm. -- not accepted -- Cholla prolifera, coastal cholla
  Opuntia pseudoudonis (Rauh & Backeb.) G.D. Rowley -- not accepted
  Opuntia puberula Pfeiff. -- accepted
  Opuntia pubescens J.C. Wendl. ex Pfeiff. -- accepted
  Opuntia puelchana A. Cast. -- not accepted
  Opuntia punta-caillan (Rauh & Backeb.) G.D. Rowley -- not accepted
  Opuntia pusilla (Haw.) Nutt. -- accepted -- cockspur pricklypear
  Opuntia pycnantha Engelm. ex J.M. Coult. -- accepted
  Opuntia pygmaea (E.F. Wiegand & Backeb.) G.D. Rowley -- not accepted
  Opuntia quimilo K. Schum. -- accepted
  Opuntia quitensis F.A.C. Weber -- accepted
  Opuntia rafinesquei Engelm. -- not accepted
  Opuntia ramosissima Engelm. -- not accepted -- Cholla diamante, branched pencil cholla, diamond cholla, pencil cholla
  Opuntia rauhii (Backeb.) G.D. Rowley -- not accepted
  Opuntia reflexispina Wiggins & Rollins -- not accepted
  Opuntia repens Bello -- accepted -- roving pricklypear
  Opuntia robusta H.L. Wendl. ex Pfeiff. -- accepted
  Opuntia rosarica G.E. Linds. -- not accepted
  Opuntia rufida Engelm. -- accepted -- Nopal rojizo, blind pricklypear
  Opuntia salmiana J. Parm. ex Pfeiff. -- accepted
  Opuntia sanfelipensis Rebman -- not accepted
  Opuntia sanguinea Proctor -- accepted
  Opuntia santa-rita (Griffiths & Hare) Rose -- accepted -- Santa Rita pricklypear
  Opuntia santamaria (E.M. Baxter) Bravo -- not accepted
  Opuntia santamaria (E.M. Baxter) Wiggins -- not accepted
  Opuntia scheerii F.A.C. Weber -- not accepted
  Opuntia schickendantzii F.A.C. Weber -- accepted
  Opuntia schottii var. grahamii (Engelm.) L.D. Benson -- not accepted
  Opuntia schulzii A. Cast. & H.V. Lelong -- not accepted
  Opuntia schumannii F.A.C. Weber ex A. Berger -- accepted
  Opuntia schweriniana K. Schum. -- not accepted
  Opuntia serpentina Engelm. -- not accepted -- Cholla serpentina
  Opuntia shaferi Britton & Rose -- not accepted
  Opuntia soederstromiana Britton & Rose -- accepted
  Opuntia spectatissima (Daston) G.D. Rowley -- not accepted
  Opuntia sphaerica C.F. Först. -- not accepted
  Opuntia spiniflora Phil. -- not accepted
  Opuntia spinosior (Engelm.) Toumey -- not accepted -- Cholla tasajillo de Arizona, walkingstick cactus, cane cholla
  Opuntia spinosissima Mill. -- not accepted -- semaphore pricklypear
  Opuntia stanlyi Engelm. -- not accepted
  Opuntia stanlyi var. kunzei (Rose) L.D. Benson -- not accepted
  Opuntia stanlyi var. parishii (Orcutt) L.D. Benson -- not accepted
  Opuntia stanlyi var. peeblesiana L.D. Benson -- not accepted
  Opuntia steiniana (Backeb.) G.D. Rowley -- not accepted
  Opuntia stenarthra K. Schum. -- accepted
  Opuntia stenopetala Engelm. -- accepted
  Opuntia streptacantha Lem. -- accepted
  Opuntia stricta (Haw.) Haw. -- accepted -- Nopal estricto, erect pricklypear
  Opuntia strigil Engelm. -- accepted -- marblefruit pricklypear
  Opuntia strigil var. flexospina (Griffiths) L.D. Benson -- not accepted
  Opuntia subulata var. exaltata (A. Berger) G.D. Rowley -- not accepted
  Opuntia sulphurea G. Don ex Loudon -- accepted
  Opuntia tardospina Griffiths -- not accepted
  Opuntia taylorii Britton & Rose -- accepted
  Opuntia tehuacana S. Arias & U. Guzmán -- accepted
  Opuntia tehuantepecana (Bravo) Bravo -- accepted
  Opuntia tenuiflora Small -- not accepted
  Opuntia tenuispina Engelm. -- not accepted
  Opuntia tephrocactoides (Rauh & Backeb.) G.D. Rowley -- not accepted
  Opuntia tesajo Engelm. ex J.M. Coult. -- not accepted
  Opuntia testudinis var. crus F.A.C. Weber -- not accepted
  Opuntia thornberi Thornber & Bonker -- not accepted
  Opuntia thurberi Engelm. -- not accepted
  Opuntia tomentosa Salm-Dyck -- accepted -- Nopal chamacuerito, woollyjoint pricklypear
  Opuntia tortispina Engelm. & J.M. Bigelow -- accepted
  Opuntia tracyi Britton -- not accepted
  Opuntia treleasei J.M. Coult. -- not accepted -- Bakersfield cactus
  Opuntia triacantha (Willd.) Sweet -- accepted -- Spanish lady
  Opuntia trichophora (Engelm. & J.M. Bigelow) Britton & Rose -- not accepted -- Nopal peludito
  Opuntia tricolor Griffiths -- not accepted
  Opuntia tuberculosirhopalica (E.F. Wiegand & Backeb.) G.D. Rowley -- not accepted
  Opuntia tuna (L.) Mill. -- accepted -- elephantear pricklypear
  Opuntia tunicata (Lehm.) Link & Otto -- not accepted -- Cholla clavellina, thistle cholla, abrojo
  Opuntia tunoidea Gibbes -- not accepted
  Opuntia turbinata Small -- not accepted
  Opuntia turgida Small -- not accepted
  Opuntia udonis Weing. -- not accepted
  Opuntia urbaniana Werderm. -- not accepted
  Opuntia vaginata Engelm. -- not accepted
  Opuntia velutina F.A.C. Weber -- accepted
  Opuntia verschaffeltii Cels ex F.A.C. Weber -- not accepted
  Opuntia versicolor Engelm. ex J.M. Coult. -- not accepted -- Cholla versicolor, staghorn cholla
  Opuntia verticosa Weing. -- not accepted
  Opuntia vilis Rose -- not accepted
  Opuntia violacea Engelm. -- not accepted
  Opuntia violacea var. castetteri L.D. Benson -- not accepted
  Opuntia violacea var. gosseliniana (F.A.C. Weber) L.D. Benson -- not accepted
  Opuntia violacea var. macrocentra (Engelm.) L.D. Benson -- not accepted
  Opuntia violacea var. santa-rita (Griffiths & Hare) L.D. Benson -- not accepted
  Opuntia vulgaris Mill. -- not accepted
  Opuntia whipplei Engelm. & J.M. Bigelow -- not accepted -- Whipple's cholla
  Opuntia whipplei var. multigeniculata (Clokey) L.D. Benson -- not accepted -- rattail cholla, blue diamond cholla
  Opuntia whipplei var. spinosior Engelm. -- not accepted
  Opuntia whipplei var. viridiflora (Britton & Rose) L.D. Benson -- not accepted
  Opuntia whitneyana E.M. Baxter -- not accepted
  Opuntia whitneyana var. albiflora E.M. Baxter -- not accepted
  Opuntia wiegandii (Backeb.) G.D. Rowley -- not accepted
  Opuntia wigginsii L.D. Benson -- not accepted -- Wiggins' cholla, Wiggin's cholla
  Opuntia wilcoxii Britton & Rose -- accepted
  Opuntia wolfii (L.D. Benson) M.A. Baker -- not accepted -- Wolf's opuntia
  Opuntia woodsii Backeb. -- not accepted
  Opuntia wrightiana (E.M. Baxter) Peebles -- not accepted
  Opuntia X aequatorialis Britton & Rose (pro sp.) -- accepted
  Opuntia X andersonii H.M. Hern., Gómez-Hin. & Bárcenas -- accepted
  Opuntia X columbiana Griffiths (pro sp.) -- accepted
  Opuntia X cubensis Britton & Rose (pro sp.) -- accepted -- bullsuckers
  Opuntia X curvispina Griffiths (pro sp.) -- accepted
  Opuntia X demissa Griffiths (pro sp.) -- accepted -- pricklypear
  Opuntia X edwardsii V.E. Grant & K.A. Grant -- accepted
  Opuntia X occidentalis Engelm. & J.M. Bigelow (pro sp.) -- accepted -- pricklypear
  Opuntia X rooneyi M.P. Griff. -- accepted
  Opuntia X spinosibacca M.S. Anthony (pro sp.) -- accepted -- pricklypear
  Opuntia X vaseyi (J.M. Coult.) Britton & Rose (pro sp.) -- accepted
  Opuntia X viridiflora Britton & Rose (pro sp.) -- not accepted -- rattail cholla, Santa Fe cholla
  Opuntia X wootonii Griffiths (pro sp.) -- accepted
  Opuntia yanganucensis (Rauh & Backeb.) G.D. Rowley -- not accepted
  Opuntia zebrina Small -- not accepted
  Oreocereus (A. Berger) Riccob. -- accepted
  Oreocereus australis (F. Ritter) A.E. Hoffm. -- not accepted
  Oreocereus celsianus (Salm-Dyck) A. Berger ex Riccob. -- accepted
  Oreocereus crassiniveus Backeb. -- not accepted
  Oreocereus doelzianus (Backeb.) Borg -- accepted
  Oreocereus doelzianus ssp. calvus (Rauh & Backeb) Mottram -- accepted
  Oreocereus doelzianus ssp. doelzianus (Backeb.) Borg -- accepted
  Oreocereus doelzianus ssp. sericatus (F. Ritter) Mottram -- accepted
  Oreocereus fossulatus (Labour.) Backeb. -- not accepted
  Oreocereus hempelianus (Gürke) D.R. Hunt -- accepted
  Oreocereus hendriksenianus (Backeb.) Backeb. -- not accepted
  Oreocereus leucotrichus (Phil.) B. Wagenkn. -- accepted
  Oreocereus maximus Backeb. -- not accepted
  Oreocereus neocelsianus Backeb. -- not accepted
  Oreocereus piscoensis (Rauh & Backeb.) F. Ritter -- not accepted
  Oreocereus pseudofossulatus D.R. Hunt -- accepted
  Oreocereus ritteri Cullmann -- not accepted
  Oreocereus trollii Kupper -- accepted
  Oreocereus variicolor Backeb. -- not accepted
  Oroya Britton & Rose -- accepted
  Oroya baumannii Kníze -- not accepted
  Oroya borchersii (Boed.) Backeb. -- accepted
  Oroya gibbosa F. Ritter -- not accepted
  Oroya laxiareolata Rauh & Backeb. -- not accepted
  Oroya neoperuviana Backeb. -- not accepted
  Oroya peruviana (K. Schum.) Britton & Rose -- accepted
  Oroya subocculta Rauh & Backeb. -- not accepted
  Ortegocactus Alexander -- accepted
  Ortegocactus macdougallii Alexander -- accepted
  Pachycereus (A. Berger) Britton & Rose -- accepted
  Pachycereus aragonii (F.A.C. Weber) P.V. Heath -- not accepted
  Pachycereus calvus (Engelm. ex J.M. Coult.) Britton & Rose -- not accepted
  Pachycereus chrysomallus (Lem.) Britton & Rose -- not accepted
  Pachycereus columna-trajani (Karw.) Britton & Rose -- not accepted
  Pachycereus foetidus (Miranda) P.V. Heath -- not accepted
  Pachycereus fulviceps (F.A.C. Weber ex Schumann) D.R. Hunt -- accepted
  Pachycereus gatesii (M.E. Jones) D.R. Hunt -- accepted
  Pachycereus gaumeri Britton & Rose -- accepted
  Pachycereus gigas (Backeb.) Backeb. -- not accepted
  Pachycereus grandis Rose -- accepted
  Pachycereus hollianus (F.A.C. Weber) Buxb. -- accepted
  Pachycereus lepidanthus (Eichlam) Britton & Rose -- accepted
  Pachycereus marginatus (DC.) Britton & Rose -- accepted
  Pachycereus militaris (Audot) D.R. Hunt -- accepted
  Pachycereus pecten-aboriginum (Engelm. ex S. Watson) Britton & Rose -- accepted
  Pachycereus pecten-aboriginum ssp. tehuantepecanus (T. MacDoug. & Bravo) P.V. Heath -- not accepted
  Pachycereus pringlei (S. Watson) Britton & Rose -- accepted
  Pachycereus ruficeps (F.A.C. Weber ex Rol.-Goss.) Britton & Rose -- not accepted
  Pachycereus schottii (Engelm.) D.R. Hunt -- accepted -- senita cactus
  Pachycereus tehuantepecanus T. MacDoug. & Bravo -- not accepted
  Pachycereus tepamo Gama & S. Arias -- accepted
  Pachycereus thurberi (Engelm.) Bravo -- not accepted
  Pachycereus weberi (J.M. Coult.) Backeb. -- accepted
  Parodia Speg. -- accepted
  Parodia aconquijaensis Weskamp -- not accepted
  Parodia agasta F.H. Brandt -- not accepted
  Parodia aglaisma F.H. Brandt -- not accepted
  Parodia alacriportana Backeb. & Voll -- accepted
  Parodia alacriportana ssp. brevihamata (W. Haage) Hofacker & P.J. Braun -- not accepted
  Parodia alacriportana ssp. buenekeri (Buining) Hofacker & P.J. Braun -- not accepted
  Parodia alacriportana ssp. catarinensis (F. Ritter) Hofacker & P.J. Braun -- not accepted
  Parodia albofuscata F.H. Brandt -- not accepted
  Parodia allosiphon (Marchesi) N.P. Taylor -- accepted
  Parodia amambayensis (Werderm.) Borg -- not accepted
  Parodia ampliocostata (F. Ritter) F.H. Brandt -- not accepted
  Parodia andreaeoides F.H. Brandt -- not accepted
  Parodia applanata (Hoffm. & Backeb.) F.H. Brandt -- not accepted
  Parodia argerichiana Weskamp -- not accepted
  Parodia arnostiana (Lisal & Kolarik) Hofacker -- accepted
  Parodia atroviridis Backeb. -- not accepted
  Parodia aureicentra Backeb. -- accepted
  Parodia aureispina Backeb. -- not accepted
  Parodia ayopayana Cárdenas -- accepted
  Parodia bellavistana F.H. Brandt -- not accepted
  Parodia belliata F.H. Brandt -- not accepted
  Parodia bermejoensis F.H. Brandt -- not accepted
  Parodia betaniana F. Ritter -- not accepted
  Parodia bilbaoensis Cárdenas -- not accepted
  Parodia borealis F. Ritter -- not accepted
  Parodia buenekeri Buining -- not accepted
  Parodia buiningii (Buxb.) N.P. Taylor -- accepted
  Parodia buxbaumiana F.H. Brandt -- not accepted
  Parodia caespitosa (Speg.) N.P. Taylor -- not accepted
  Parodia camargensis Buining & F. Ritter -- not accepted
  Parodia camblayana (F. Ritter) F.H. Brandt -- not accepted
  Parodia campestra F.H. Brandt -- not accepted
  Parodia capillitaensis F.H. Brandt -- not accepted
  Parodia carambeiensis (Buining & Brederoo) Hofacker -- accepted
  Parodia carapariana F.H. Brandt -- not accepted
  Parodia cardenasii F. Ritter -- not accepted
  Parodia carminata Backeb. -- not accepted
  Parodia carrerana Cárdenas -- not accepted
  Parodia castanea (F. Ritter) F. Ritter -- not accepted
  Parodia catamarcensis Backeb. -- not accepted
  Parodia catarinensis (F. Ritter) F.H. Brandt -- not accepted
  Parodia chaetocarpa F. Ritter -- not accepted
  Parodia chirimoyarana F.H. Brandt -- not accepted
  Parodia chlorocarpa F. Ritter -- not accepted
  Parodia chrysacanthion (K. Schum.) Backeb. -- accepted
  Parodia cintiensis F. Ritter -- not accepted
  Parodia claviceps (F. Ritter) F.H. Brandt -- not accepted
  Parodia columnaris Cárdenas -- accepted
  Parodia comarapana Cárdenas -- accepted
  Parodia commutans F. Ritter -- accepted
  Parodia comosa F. Ritter -- not accepted
  Parodia compressa F. Ritter -- not accepted
  Parodia concinna (Monv.) N.P. Taylor -- accepted
  Parodia concinna ssp. agnetae (Vliet) Hofacker -- not accepted
  Parodia concinna ssp. blaauwiana (Vliet) Hofacker -- not accepted
  Parodia cotacajensis F.H. Brandt -- not accepted
  Parodia crassigibba (F. Ritter) N.P. Taylor -- accepted
  Parodia culpinensis F.H. Brandt -- not accepted
  Parodia dextrohamata Backeb. -- not accepted
  Parodia echinopsoides F.H. Brandt -- not accepted
  Parodia echinus F. Ritter -- not accepted
  Parodia elachisantha (F.A.C. Weber) F.H. Brandt -- not accepted
  Parodia elachista F.H. Brandt -- not accepted
  Parodia elata F.H. Brandt -- not accepted
  Parodia erinacea (Haw.) N.P. Taylor -- accepted
  Parodia exquisita F.H. Brandt -- not accepted
  Parodia faustiana Backeb. -- not accepted
  Parodia fechseri Backeb. -- not accepted
  Parodia firmissima F.H. Brandt -- not accepted
  Parodia formosa F. Ritter -- accepted
  Parodia friciana F.H. Brandt -- not accepted
  Parodia fulvispina F. Ritter -- not accepted
  Parodia fusca (F. Ritter) Rogoz. & P.J. Braun -- accepted
  Parodia fusco-viridis Backeb. -- not accepted
  Parodia gibbulosa F. Ritter -- not accepted
  Parodia gibbulosoides F.H. Brandt -- accepted
  Parodia glischrocarpa F. Ritter -- not accepted
  Parodia gracilis F. Ritter -- not accepted
  Parodia graessneri (K. Schum.) F.H. Brandt -- not accepted
  Parodia grandiflora Veverka -- not accepted
  Parodia grossei (K. Schum.) H. Brandt -- not accepted
  Parodia gummifera Backeb. & Voll -- not accepted
  Parodia gutekunstiana Backeb. -- not accepted
  Parodia haageana F.H. Brandt -- not accepted
  Parodia haselbergii (Haage ex Rümpler) F.H. Brandt -- accepted
  Parodia haselbergii ssp. graessneri (K.Schum. ) Hofacker & P.J. Braun -- accepted
  Parodia haselbergii ssp. haselbergii (Haage ex Rümpler) F.H. Brandt -- accepted
  Parodia hausteiniana Rausch -- accepted
  Parodia herteri (Werderm.) N.P. Taylor -- accepted
  Parodia herzogii Rausch -- not accepted
  Parodia heteracantha F. Ritter ex Weskamp -- not accepted
  Parodia horrida F.H. Brandt -- not accepted
  Parodia horstii (F. Ritter) N.P. Taylor -- accepted
  Parodia hummeliana A.B. Lau -- not accepted
  Parodia idiosa F.H. Brandt -- not accepted
  Parodia jujuyana Fric ex R. Subík -- not accepted
  Parodia kilianana Backeb. -- not accepted
  Parodia krahnii Weskamp -- not accepted
  Parodia lamprospina F.H. Brandt -- not accepted
  Parodia langsdorffii (Lehm.) D.R. Hunt -- accepted
  Parodia lauii F.H. Brandt -- not accepted
  Parodia legitima F.H. Brandt -- not accepted
  Parodia leninghausii (F. Haage) F.H. Brandt -- accepted
  Parodia liliputana (Werderm.) N.P. Taylor -- not accepted
  Parodia linkii (Lehm.) R. Kiesling -- accepted
  Parodia lohaniana A.B. Lau & Weskamp -- not accepted
  Parodia lychnosa F.H. Brandt -- not accepted
  Parodia maassii (Heese) A. Berger -- accepted
  Parodia macednosa F.H. Brandt -- not accepted
  Parodia magnifica (F. Ritter) F.H. Brandt -- accepted
  Parodia mairanana Cárdenas -- not accepted
  Parodia malyana var. igneuiflora F.H. Brandt -- not accepted
  Parodia mammulosa (Lem.) N.P. Taylor -- accepted
  Parodia mammulosa ssp. brasiliensis (Havlícek) Hofacker -- not accepted
  Parodia mammulosa ssp. erythracantha (H. Schloss. & Brederoo) Hofacker -- not accepted
  Parodia mammulosa ssp. eugeniae (Vliet) Hofacker -- not accepted
  Parodia mammulosa ssp. submammulosa (Lem.) Hofacker -- not accepted
  Parodia maxima F. Ritter -- not accepted
  Parodia meonacantha (Prestlé) Hofacker -- not accepted
  Parodia mercedesiana Weskamp -- not accepted
  Parodia mesembrina F.H. Brandt -- not accepted
  Parodia microsperma (F.A.C. Weber) Speg. -- accepted
  Parodia microsperma ssp. horrida (F.H. Brandt) R. Kiesling & O. Ferrari -- accepted
  Parodia microsperma ssp. microsperma (F.A.C. Weber) Speg. -- accepted
  Parodia miguillensis Cárdenas -- not accepted
  Parodia minima Rausch -- not accepted
  Parodia minuscula Rausch -- not accepted
  Parodia minuta F. Ritter -- not accepted
  Parodia miranda F.H. Brandt -- not accepted
  Parodia mueller-melchersii (Backeb.) N.P. Taylor -- accepted
  Parodia mueller-melchersii ssp. gutierrezii (W.R. Abraham) Hofacker -- not accepted
  Parodia mueller-melchersii ssp. winkleri (Vliet) Hofacker -- not accepted
  Parodia muhrii F.H. Brandt -- not accepted
  Parodia multicostata F. Ritter & Jelin. -- not accepted
  Parodia muricata (Otto ex Pfeiff.) Hofacker -- accepted
  Parodia mutabilis Backeb. -- not accepted
  Parodia nana Weskamp -- not accepted
  Parodia neglecta F.H. Brandt -- not accepted
  Parodia neglectoides F.H. Brandt -- not accepted
  Parodia neoarechavaletae (Havlícek) D.R. Hunt -- accepted
  Parodia neohorstii (S. Theun.) N.P. Taylor -- accepted
  Parodia nigrispina (K. Schum.) F.H. Brandt -- accepted
  Parodia nivosa (Fric) Backeb. -- accepted
  Parodia nothominuscula Hofacker -- not accepted
  Parodia nothorauschii D.R. Hunt -- accepted
  Parodia obtusa F. Ritter -- not accepted
  Parodia ocampoi Cárdenas -- accepted
  Parodia occulta F. Ritter -- not accepted
  Parodia otaviana Cárdenas -- accepted
  Parodia ottonis (Lehm.) N.P. Taylor -- accepted
  Parodia ottonis ssp. horstii (F. Ritter) Hofacker -- accepted
  Parodia ottonis ssp. ottonis (Lehm.) N.P. Taylor -- accepted
  Parodia otuyensis F. Ritter -- not accepted
  Parodia oxycostata (Buining & Brederoo) Hofacker -- accepted
  Parodia oxycostata ssp. gracilis (F. Ritter) Hofacker -- accepted
  Parodia oxycostata ssp. oxycostata (Buining & Brederoo) Hofacker -- accepted
  Parodia pachysa F.H. Brandt -- not accepted
  Parodia paraguayensis Speg. -- not accepted
  Parodia parvula F.H. Brandt -- not accepted
  Parodia penicillata Fechser & Steeg -- accepted
  Parodia permutata (F. Ritter) Hofacker -- not accepted
  Parodia perplexa F.H. Brandt -- not accepted
  Parodia prestoensis F.H. Brandt -- accepted
  Parodia procera F. Ritter -- accepted
  Parodia pseudoayopayana Cárdenas -- not accepted
  Parodia pseudoprocera F.H. Brandt -- not accepted
  Parodia pseudostuemeri Backeb. -- not accepted
  Parodia pseudosubterranea F.H. Brandt -- not accepted
  Parodia punae Cárdenas -- not accepted
  Parodia purpureo-aurea F. Ritter -- not accepted
  Parodia pusilla F.H. Brandt -- not accepted
  Parodia quechua F.H. Brandt -- not accepted
  Parodia rauschii Backeb. -- not accepted
  Parodia rechensis (Buining) F.H. Brandt -- accepted
  Parodia rigida Backeb. -- not accepted
  Parodia rigidispina Krainz -- not accepted
  Parodia riograndensis F.H. Brandt -- not accepted
  Parodia ritteri Buining -- accepted
  Parodia roseoalba F. Ritter -- not accepted
  Parodia rostrum-sperma F.H. Brandt -- not accepted
  Parodia rubellihamata Backeb. -- not accepted
  Parodia rubida F. Ritter -- not accepted
  Parodia rubricentra Backeb. -- not accepted
  Parodia rubriflora Backeb. -- not accepted
  Parodia rubristaminea F. Ritter -- not accepted
  Parodia rudibuenekeri (W.R. Abraham) Rogoz. & P.J. Braun -- accepted
  Parodia rudibuenekeri ssp. glomerata (Menges ex N. Gerloff) Hofacker -- not accepted
  Parodia rutilans (Daniker & Krainz) N.P. Taylor -- not accepted
  Parodia rutilans ssp. veeniana (Vliet) Hofacker -- not accepted
  Parodia saint-pieana Backeb. -- not accepted
  Parodia salmonea (Backeb.) F.H. Brandt -- not accepted
  Parodia sanguiniflora Backeb. -- not accepted
  Parodia schumanniana (Nic.) F.H. Brandt -- accepted
  Parodia schumanniana ssp. claviceps (F. Ritter) Hofacker & P.J. Braun -- accepted
  Parodia schumanniana ssp. schumanniana (Nic.) F.H. Brandt -- accepted
  Parodia schwebsiana (Werderm.) Backeb. -- accepted
  Parodia scopa (Spreng.) N.P. Taylor -- accepted
  Parodia scopa ssp. marchesii (W.R. Abraham) Hofacker -- accepted
  Parodia scopa ssp. neobuenekeri (F. Ritter) Rogoz. & P.J. Braun -- accepted
  Parodia scopa ssp. scopa (Spreng.) Hofacker -- accepted
  Parodia scopa ssp. succinea (F. Ritter) Rogoz. & P.J. Braun -- accepted
  Parodia scopaoides Backeb. -- not accepted
  Parodia scoparia F. Ritter -- not accepted
  Parodia sellowii (Link & Otto) D.R. Hunt -- not accepted
  Parodia setifera Backeb. -- not accepted
  Parodia setispina F. Ritter -- not accepted
  Parodia setosa Backeb. -- not accepted
  Parodia sotomayorensis F. Ritter -- not accepted
  Parodia spanisa F.H. Brandt -- not accepted
  Parodia splendens Cárdenas -- not accepted
  Parodia stereospina F.H. Brandt -- not accepted
  Parodia stockingeri (Prestlé) Rogoz. & P.J. Braun -- accepted
  Parodia stuemeri (Werderm.) Backeb. -- accepted
  Parodia submammulosa (Lem.) R. Kiesling -- not accepted
  Parodia submammulosa ssp. minor R. Kiesling -- not accepted
  Parodia subterranea F. Ritter -- accepted
  Parodia subtilihamata F. Ritter -- not accepted
  Parodia succinea (F. Ritter) N.P. Taylor -- not accepted
  Parodia sucrensis F.H. Brandt -- not accepted
  Parodia superba F.H. Brandt -- not accepted
  Parodia suprema F. Ritter -- not accepted
  Parodia tabularis (Cels ex Rümpler) D.R. Hunt -- not accepted
  Parodia tabularis ssp. bommeljei (Vliet) Hofacker -- not accepted
  Parodia tafiensis Backeb. -- not accepted
  Parodia talaensis F.H. Brandt -- not accepted
  Parodia tarabucina Cárdenas -- not accepted
  Parodia taratensis Cárdenas -- accepted
  Parodia tenuicylindrica (F. Ritter) D.R. Hunt -- accepted
  Parodia thieleana F.H. Brandt -- not accepted
  Parodia tilcarensis (Werderm. & Backeb.) Backeb. -- not accepted
  Parodia tillii Weskamp -- not accepted
  Parodia tojoensis F.H. Brandt -- not accepted
  Parodia tredecimcostata F. Ritter -- not accepted
  Parodia tuberculata Cárdenas -- accepted
  Parodia tuberculosi-costata Backeb. -- not accepted
  Parodia tucumanensis Weskamp -- not accepted
  Parodia turbinata (Arechav.) Hofacker -- accepted
  Parodia turecekiana R. Kiesling -- accepted
  Parodia uebelmanniana F. Ritter -- not accepted
  Parodia uhligiana Backeb. -- not accepted
  Parodia variicolor F. Ritter -- not accepted
  Parodia warasii (F. Ritter) F.H. Brandt -- accepted
  Parodia weberiana F.H. Brandt -- not accepted
  Parodia werdermanniana (Herter) N.P. Taylor -- accepted
  Parodia werneri Hofacker -- not accepted
  Parodia werneri ssp. pleiocephala (N. Gerloff & Königs) Hofacker -- not accepted
  Parodia winbergii Weskamp -- not accepted
  Parodia yamparaezi Cárdenas -- not accepted
  Parodia yamparaezii Cárdenas -- not accepted
  Parodia zaletaewana F.H. Brandt -- not accepted
  Parodia zecheri R. Vásquez -- not accepted
  Pediocactus Britton & Rose -- accepted -- hedgehog cactus
  Pediocactus alonsoi (Glass & S. Arias) Halda -- not accepted
  Pediocactus bonatzii (G. Frank) Halda -- not accepted
  Pediocactus bradyi L.D. Benson -- accepted -- Brady's hedgehog cactus, Brady's pediocactus, Brady's pincushion cactus
  Pediocactus brevihamatus (Engelm.) Halda -- not accepted
  Pediocactus brevihamatus ssp. tobuschii (W.T. Marshall) Halda -- not accepted
  Pediocactus cloverae (K.D. Heil & J.M. Porter) Halda -- not accepted
  Pediocactus cloverae ssp. brackii (K.D. Heil & J.M. Porter) Halda -- not accepted
  Pediocactus conoideus (DC.) Halda -- not accepted
  Pediocactus despainii S.L. Welsh & Goodrich -- accepted -- Despain's pincushion cactus, San Rafael cactus
  Pediocactus erectocentrus (J.M. Coult.) Halda -- not accepted
  Pediocactus gautii (L.D. Benson) Halda -- not accepted
  Pediocactus gielsdorfianus (Werderm.) Halda -- not accepted
  Pediocactus glaucus (K. Schum.) Arp -- not accepted
  Pediocactus hermannii W.T. Marshall -- not accepted
  Pediocactus hoferi (Lüthy & A.B. Lau) Halda -- not accepted
  Pediocactus horripilus (Lem.) Halda -- not accepted
  Pediocactus intertextus (Engelm.) Halda -- not accepted
  Pediocactus johnsonii (Parry ex Engelm.) Halda -- not accepted
  Pediocactus knowltonii L.D. Benson -- accepted -- Knowlton's miniature cactus, Knowlton's cactus
  Pediocactus knuthianus (Boed.) Halda -- not accepted
  Pediocactus laui (Glass & R.A. Foster) Halda -- not accepted
  Pediocactus lophophoroides (Werderm.) Halda -- not accepted
  Pediocactus mandragora (A. Berger) Halda -- not accepted
  Pediocactus mariposensis (Hester) Halda -- not accepted
  Pediocactus mesae-verdae (Boissev. & C. Davidson) Arp -- not accepted
  Pediocactus nigrispinus (Hochstätter) Hochstätter -- accepted
  Pediocactus nigrispinus ssp. beastonii (Hochstätter) Hochstätter -- not accepted
  Pediocactus nigrispinus ssp. indranus Hochstätter -- not accepted
  Pediocactus nigrispinus ssp. puebloensis Hochstätter -- not accepted
  Pediocactus nigrispinus var. beastonii Hochstätter -- not accepted
  Pediocactus nyensis (Hochstätter) Halda -- not accepted
  Pediocactus papyracanthus (Engelm.) L.D. Benson -- not accepted -- paper-spined cactus
  Pediocactus paradinei B.W. Benson -- accepted -- Kaibab pediocactus, park hedgehog cactus, Kaibab plains cactus
  Pediocactus parviflorus (Clover & Jotter) Halda -- not accepted
  Pediocactus parviflorus ssp. havasupaiensis (Clover) Halda -- not accepted
  Pediocactus parviflorus ssp. intermedius (Peebles) Halda -- not accepted
  Pediocactus parviflorus ssp. terrae-canyonae (K.D. Heil) Halda -- not accepted
  Pediocactus peeblesianus (Croizat) L.D. Benson -- accepted -- Peebles' Navajo cactus, Peebles' pediocactus, Navajo pincushion cactus
  Pediocactus peeblesianus ssp. fickeiseniorum (L.D. Benson) Lüthy -- accepted
  Pediocactus peeblesianus ssp. peeblesianus (Croizat) L.D. Benson -- accepted
  Pediocactus peeblesianus var. fickeiseniae (Backeb.) L.D. Benson -- not accepted -- Fickeisen's pediocactus, Navajo pincushion cactus, Fickeisen plains cactus
  Pediocactus peeblesianus var. fickeisenii (Backeb.) L.D. Benson -- not accepted
  Pediocactus peeblesianus var. peeblesianus (Croizat) L.D. Benson -- not accepted -- Navajo pincushion cactus, Peebles Navajo cactus
  Pediocactus polyancistrus (Engelm. & J.M. Bigelow) Arp -- not accepted
  Pediocactus pseudomacrochele (Backeb.) Halda -- not accepted
  Pediocactus pseudomacrochele var. krainzianus (Gerhart Frank) Halda -- not accepted
  Pediocactus pseudomacrochele var. lausseri (Diers & Gerhart Frank) Halda -- not accepted
  Pediocactus pseudopectinatus (Backeb.) Halda -- not accepted
  Pediocactus rioverdensis (G. Frank) Halda -- not accepted
  Pediocactus robustior (J.M. Coult.) Arp -- not accepted
  Pediocactus saueri (Boed.) Halda -- not accepted
  Pediocactus scheeri (Salm-Dyck) Halda -- not accepted
  Pediocactus schmiedickeanus (Boed.) Halda -- not accepted
  Pediocactus schmiedickeanus var. dickisoniae (Glass & R.A. Foster) Halda -- not accepted
  Pediocactus schmiedickeanus var. flaviflorus (Gerhart Frank & A.B. Lau) Halda -- not accepted
  Pediocactus schmiedickeanus var. gracilis (Glass & R.A. Foster) Halda -- not accepted
  Pediocactus schmiedickeanus var. klinkerianus (Backeb. & H. Jacobsen) Halda -- not accepted
  Pediocactus schmiedickeanus var. macrochele (Werderm.) Halda -- not accepted
  Pediocactus schmiedickeanus var. rubriflorus (Gerhart Frank) Halda -- not accepted
  Pediocactus schmiedickeanus var. schwarzii (Shurly) Halda -- not accepted
  Pediocactus sileri (Engelm. ex J.M. Coult.) L.D. Benson -- accepted -- Siler's pincushion cactus
  Pediocactus simpsonii (Engelm.) Britton & Rose -- accepted -- snowball pediocactus, Simpson's hedgehog cactus
  Pediocactus simpsonii ssp. bensonii (Engelm.) Hochstätter -- not accepted
  Pediocactus simpsonii ssp. bradyi (L.D. Benson) Halda -- not accepted
  Pediocactus simpsonii ssp. idahoensis Hochstätter -- not accepted
  Pediocactus simpsonii ssp. indranus (Hochstätter) Hochstätter -- not accepted
  Pediocactus simpsonii ssp. robustior (J.M. Coult.) Hochstätter -- not accepted
  Pediocactus simpsonii var. despainii (S.L. Welsh & Goodrich) Halda -- not accepted
  Pediocactus simpsonii var. indranus Hochstätter -- not accepted
  Pediocactus simpsonii var. knowltonii (L.D. Benson) Halda -- not accepted
  Pediocactus simpsonii var. paradinei (B.W. Benson) Halda -- not accepted
  Pediocactus simpsonii var. robustior (J.M. Coult.) L.D. Benson -- not accepted -- snowball cactus
  Pediocactus simpsonii var. winkleri (K.D. Heil) Halda -- not accepted
  Pediocactus smithii (Muehlenpf.) Halda -- not accepted
  Pediocactus spinosior (Engelm.) Halda -- not accepted
  Pediocactus spinosior ssp. blainei (S.L. Welsh & K.H. Thorne) Halda -- not accepted
  Pediocactus subterraneus (Backeb.) Halda -- not accepted
  Pediocactus swobodae (Diers) Halda -- not accepted
  Pediocactus uncinatus (Galeotti ex Pfeiff.) Halda -- not accepted
  Pediocactus unguispinus (Engelm.) Halda -- not accepted
  Pediocactus valdezianus (H. Moeller) Halda -- not accepted
  Pediocactus viereckii (Werderm.) Halda -- not accepted
  Pediocactus warnockii (L.D. Benson) Halda -- not accepted
  Pediocactus whipplei (Engelm. & J.M. Bigelow) Arp -- not accepted
  Pediocactus winkleri K.D. Heil -- accepted -- Winkler's pincushion cactus, Winkler cactus
  Pediocactus wrightiae (L.D. Benson) Arp -- not accepted
  Pediocactus ysabelae (K. Schlange) Halda -- not accepted
  Pelecyphora Ehrenb. -- accepted
  Pelecyphora aselliformis Ehrenb. -- accepted
  Pelecyphora pseudopectinata Backeb. -- not accepted
  Pelecyphora strobiliformis (Werderm.) Kreuz. -- accepted
  Peniocereus (A. Berger) Britton & Rose -- accepted
  Peniocereus castellae Sánchez-Mej. -- accepted
  Peniocereus chiapensis (Bravo) Gómez-Hin. & H.M. Hern. -- accepted
  Peniocereus cuixmalensis Sánchez-Mej. -- accepted
  Peniocereus diguetii (F.A.C. Weber) Backeb. -- not accepted
  Peniocereus fosterianus Cutak -- accepted
  Peniocereus greggii (Engelm.) Britton & Rose -- accepted -- nightblooming cereus
  Peniocereus greggii var. greggii (Engelm.) Britton & Rose -- accepted -- Gregg's nightblooming cereus
  Peniocereus greggii var. transmontanus (Engelm.) Backeb. -- accepted -- nightblooming cereus
  Peniocereus guatemalensis (Britton & Rose) D.R. Hunt -- accepted
  Peniocereus hirschtianus (K. Schum.) D.R. Hunt -- accepted
  Peniocereus johnstonii Britton & Rose -- accepted
  Peniocereus lazaro-cardenasii (J.L. Contr., J. Jiménez Ram., Sánchez-Mej. & C.A. Toledo) D.R. Hunt -- accepted
  Peniocereus macdougallii Cutak -- accepted
  Peniocereus maculatus (Weing.) Cutak -- accepted
  Peniocereus marianus (Gentry) Sánchez-Mej. -- accepted
  Peniocereus oaxacensis (Britton & Rose) D.R. Hunt -- accepted
  Peniocereus occidentalis Bravo -- accepted
  Peniocereus papillosus (Britton & Rose) U. Guzmán -- not accepted
  Peniocereus rosei J.G. Ortega -- accepted
  Peniocereus serpentinus (Lag. & Rodr.) N.P. Taylor -- accepted
  Peniocereus striatus (Brandegee) Buxb. -- accepted -- gearstem cactus
  Peniocereus tepalcatepecanus Sánchez-Mej. -- accepted
  Peniocereus viperinus (F.A.C. Weber) Buxb. -- accepted
  Peniocereus zopilotensis (J. Meyrán) Buxb. -- accepted
  Pereskia Mill. -- accepted
  Pereskia aculeata Mill. -- accepted -- Barbados shrub
  Pereskia aculeata var. godseffiana (hort. ex Gard. Chron.) Backeb. & F.M. Knuth ex Krainz -- not accepted
  Pereskia amapola F.A.C. Weber -- not accepted
  Pereskia autumnalis (Eichlam) Rose -- not accepted
  Pereskia bahiensis Gürke -- accepted
  Pereskia bleo (Kunth) DC. -- accepted
  Pereskia colombiana Britton & Rose -- not accepted
  Pereskia conzattii Britton & Rose -- not accepted
  Pereskia cubensis Britton & Rose -- not accepted
  Pereskia diaz-romeroana Cárdenas -- accepted
  Pereskia grandifolia Haw. -- accepted -- rose cactus
  Pereskia grandifolia ssp. grandifolia Haw. -- accepted
  Pereskia grandifolia ssp. violacea (Leuenb.) N.P. Taylor & Zappi -- accepted
  Pereskia guamacho F.A.C. Weber -- accepted
  Pereskia higuerana Cárdenas -- not accepted
  Pereskia horrida (Kunth) DC. -- accepted
  Pereskia horrida ssp. horrida (Kunth) DC. -- accepted
  Pereskia horrida ssp. rauhii (Backeb.) Ostolaza -- accepted
  Pereskia humboldtii Britton & Rose -- not accepted
  Pereskia humboldtii var. rauhii (Backeb.) Leuenb. -- not accepted
  Pereskia lychnidiflora DC. -- accepted
  Pereskia marcanoi Areces -- accepted
  Pereskia moorei Britton & Rose -- not accepted
  Pereskia nemorosa Rojas Acosta -- accepted
  Pereskia pereskia (L.) H. Karst -- not accepted
  Pereskia pflanzii Vaupel -- not accepted
  Pereskia portulacifolia (L.) DC. -- accepted
  Pereskia quisqueyana Alain -- accepted
  Pereskia sacharosa Griseb. -- accepted
  Pereskia saipinensis Cárdenas -- not accepted
  Pereskia sparsiflora F. Ritter -- not accepted
  Pereskia stenantha F. Ritter -- accepted
  Pereskia subulata Muehlenpf. -- not accepted
  Pereskia tampicana F.A.C. Weber -- not accepted
  Pereskia vargasii H. Johnson -- not accepted
  Pereskia verticillata Vaupel -- not accepted
  Pereskia weberiana K. Schum. -- accepted
  Pereskia zehntneri Britton & Rose -- not accepted
  Pereskiopsis Britton & Rose -- accepted
  Pereskiopsis aquosa (F.A.C. Weber) Britton & Rose -- accepted
  Pereskiopsis blakeana J.G. Ortega -- accepted
  Pereskiopsis chapistle (F.A.C. Weber) Britton & Rose -- not accepted
  Pereskiopsis diguetii (F.A.C. Weber) Britton & Rose -- accepted
  Pereskiopsis kellermanii Rose -- accepted
  Pereskiopsis opuntiiflora (DC.) Britton & Rose -- not accepted
  Pereskiopsis pititache (Karw. ex Pfeiff.) Britton & Rose -- not accepted
  Pereskiopsis porteri (Brandegee ex F.A.C. Weber) Britton & Rose -- accepted
  Pereskiopsis rotundifolia (DC.) Britton & Rose -- accepted
  Pereskiopsis scandens Britton & Rose -- not accepted
  Pereskiopsis spathulata (Otto ex Pfeiff.) Britton & Rose -- not accepted
  Pereskiopsis velutina Rose -- not accepted
  Pfeiffera Salm-Dyck -- accepted
  Pfeiffera asuntapatensis (M. Kessler, Ibisch & Barthlott) Ralf Bauer -- accepted
  Pfeiffera boliviana (Britton) D.R. Hunt -- accepted
  Pfeiffera brevispina D.R. Hunt -- accepted
  Pfeiffera crenata (Britton) P.V. Heath -- accepted
  Pfeiffera erecta F. Ritter -- not accepted
  Pfeiffera gracilis F. Ritter -- not accepted
  Pfeiffera ianthothele (Monv.) F.A.C. Weber -- accepted
  Pfeiffera incahuasina (Cárdenas) P.V. Heath -- not accepted
  Pfeiffera mataralensis F. Ritter -- not accepted
  Pfeiffera micrantha (Vaupel) P.V. Heath -- accepted
  Pfeiffera miyagawae Barthlott & Rauh -- accepted
  Pfeiffera monacantha (Griseb.) P.V. Heath -- accepted
  Pfeiffera monacantha ssp. kimnachii (Doweld) Ralf Bauer -- accepted
  Pfeiffera monacantha ssp. monacantha (Griseb.) P.V. Heath -- accepted
  Pfeiffera multigona Cárdenas -- not accepted
  Pfeiffera paranganiensis (Cárdenas) P.V. Heath -- accepted
  Phellosperma Britton & Rose -- not accepted
  Phellosperma tetrancistra (Engelm.) Britton & Rose -- not accepted
  Philippicereus Backeb. -- not accepted
  Philippicereus castaneus (K. Schum.) Backeb. -- not accepted
  Phyllocactus Link -- not accepted
  Phyllocactus cartagensis F.A.C. Weber -- not accepted
  Phyllocactus eichlamii Weing. -- not accepted
  Phyllocactus grandilobus F.A.C. Weber -- not accepted
  Phyllocactus lepidocarpus F.A.C. Weber -- not accepted
  Phyllocactus phyllanthus var. columbiensis F.A.C. Weber -- not accepted
  Phyllocactus pittieri F.A.C. Weber -- not accepted
  Phyllocactus thomasianus K. Schum. -- not accepted
  Pierrebraunia Esteves -- accepted
  Pierrebraunia bahiensis (P.J. Braun & Esteves) Esteves -- accepted
  Pierrebraunia brauniorum Esteves -- accepted
  Pilocereus Lem. -- not accepted
  Pilocereus aurisetus Werderm. -- not accepted
  Pilocereus bradei Backeb. & Voll -- not accepted
  Pilocereus floccosus Backeb. & Voll -- not accepted
  Pilocereus mortensenii Croizat -- not accepted
  Pilocereus pasacanus F.A.C. Weber ex Rümpler -- not accepted
  Pilocereus robinii Lem. -- not accepted
  Pilocereus strausii Heese -- not accepted
  Pilocereus strictus (DC.) Rümpler -- not accepted
  Pilocopiapoa F. Ritter -- not accepted
  Pilocopiapoa solaris F. Ritter -- not accepted
  Pilosocereus Byles & G.D. Rowley -- accepted -- tree cactus
  Pilosocereus albisummus P.J. Braun & Esteves -- accepted
  Pilosocereus alensis (F.A.C. Weber ex Rol.-Goss.) Byles & G.D. Rowley -- accepted
  Pilosocereus arenicola (Werderm.) Byles & G.D. Rowley -- not accepted
  Pilosocereus arrabidae (Lem.) Byles & G.D. Rowley -- accepted
  Pilosocereus atroflavispinus F. Ritter -- not accepted
  Pilosocereus aureispinus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus aurilanatus F. Ritter -- not accepted
  Pilosocereus aurisetus (Werderm.) Byles & G.D. Rowley -- accepted
  Pilosocereus aurisetus ssp. aurilanatus (F. Ritter) Zappi -- accepted
  Pilosocereus aurisetus ssp. aurisetus (Werderm.) Byles & G.D. Rowley -- accepted
  Pilosocereus aurisetus ssp. densilanatus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus aurisetus ssp. supthutianus (P.J. Braun) P.J. Braun & Esteves -- not accepted
  Pilosocereus aurisetus ssp. werdermannianus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Pilosocereus azulensis N.P. Taylor & Zappi -- accepted
  Pilosocereus azureus F. Ritter -- not accepted
  Pilosocereus backebergii (Weing.) Byles & G.D. Rowley -- not accepted
  Pilosocereus bahamensis (Britton) Byles & G.D. Rowley -- not accepted
  Pilosocereus barbadensis (Britton & Rose) Byles & G.D. Rowley -- not accepted
  Pilosocereus bohlei Hofacker -- accepted
  Pilosocereus bradei (Backeb. & Voll) Byles & G.D. Rowley -- not accepted
  Pilosocereus brasiliensis (Britton & Rose) Backeb. -- accepted
  Pilosocereus brasiliensis ssp. brasiliensis (Britton & Rose) Backeb. -- accepted
  Pilosocereus brasiliensis ssp. ruschianus (Buining & Brederoo) Zappi -- accepted
  Pilosocereus braunii Esteves -- not accepted
  Pilosocereus brooksianus (Britton & Rose) Byles & G.D. Rowley -- not accepted
  Pilosocereus carolinensis F. Ritter -- not accepted
  Pilosocereus catingicola (Gürke) Byles & G.D. Rowley -- accepted
  Pilosocereus catingicola ssp. arenicola (Werderm.) P.J. Braun & Esteves -- not accepted
  Pilosocereus catingicola ssp. catingicola (Gürke) Byles & G.D. Rowley -- accepted
  Pilosocereus catingicola ssp. hapalacanthus (Werderm.) P.J. Braun & Esteves -- not accepted
  Pilosocereus catingicola ssp. robustus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus catingicola ssp. salvadorensis (Werderm.) Zappi -- accepted
  Pilosocereus cenepequei Rizzini & A. Mattos -- not accepted
  Pilosocereus chrysacanthus (F.A.C. Weber) Byles & G.D. Rowley -- accepted
  Pilosocereus chrysostele (Vaupel) Byles & G.D. Rowley -- accepted
  Pilosocereus claroviridis (Backeb.) Byles & G.D. Rowley -- not accepted
  Pilosocereus coerulescens (Lem.) F. Ritter -- not accepted
  Pilosocereus collinsii (Britton & Rose) Byles & G.D. Rowley -- accepted
  Pilosocereus colombianus (Rose) Byles & G.D. Rowley -- not accepted
  Pilosocereus cristalinensis P.J. Braun & Esteves -- not accepted
  Pilosocereus cyaneus F. Ritter -- not accepted
  Pilosocereus deeringii (Small) Byles & G.D. Rowley -- not accepted
  Pilosocereus densiareolatus F. Ritter -- accepted
  Pilosocereus densiareolatus ssp. brunneolanatus P.J. Braun & Esteves -- not accepted
  Pilosocereus densivillosus P.J. Braun & Esteves -- not accepted
  Pilosocereus diersianus (Esteves) P.J. Braun & Esteves -- accepted
  Pilosocereus estevesii P.J. Braun -- not accepted
  Pilosocereus flavipulvinatus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus flavipulvinatus ssp. carolinensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus flavipulvinatus var. carolinensis (F. Ritter) F. Ritter -- not accepted
  Pilosocereus flexibilispinus P.J. Braun & Esteves -- accepted
  Pilosocereus floccosus (Backeb. & Voll) Byles & G.D. Rowley -- accepted
  Pilosocereus floccosus ssp. floccosus (Backeb. & Voll) Byles & G.D. Rowley -- accepted
  Pilosocereus floccosus ssp. quadricostatus (F. Ritter) Zappi -- accepted
  Pilosocereus fulvilanatus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus fulvilanatus ssp. fulvilanatus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus fulvilanatus ssp. vanheekianus P.J. Braun & Esteves -- not accepted
  Pilosocereus gaturianensis F. Ritter -- not accepted
  Pilosocereus gaumeri (Britton & Rose) Backeb. -- not accepted
  Pilosocereus gironensis Rauh, Backeb. ex Byles & G.D. Rowley -- not accepted
  Pilosocereus glaucochrous (Werderm.) Byles & G.D. Rowley -- accepted
  Pilosocereus goianus P.J. Braun & Esteves -- not accepted
  Pilosocereus gounellei (F.A.C. Weber ex K. Schum.) Byles & G.D. Rowley -- accepted
  Pilosocereus gounellei ssp. gounellei (F.A.C. Weber ex K. Schum.) Byles & G.D. Rowley -- accepted
  Pilosocereus gounellei ssp. zehntneri (Britton & Rose) Zappi -- accepted
  Pilosocereus gruberi Schatzl & H. Till -- not accepted
  Pilosocereus guerreronis (Backeb.) Byles & G.D. Rowley -- not accepted
  Pilosocereus hapalacanthus (Werderm.) Byles & G.D. Rowley -- not accepted
  Pilosocereus juaruensis (Buining & Brederoo) P.J. Braun & Esteves -- accepted
  Pilosocereus kanukuensis (Alexander) Leuenb. -- not accepted
  Pilosocereus kanukuensis (Alexander) P.J. Braun & Esteves -- not accepted
  Pilosocereus keyensis (Britton & Rose) Byles & G.D. Rowley -- not accepted
  Pilosocereus lanuginosus (L.) Byles & G.D. Rowley -- accepted
  Pilosocereus leucocephalus (Poselg.) Byles & G.D. Rowley -- accepted
  Pilosocereus lindaianus P.J. Braun & Esteves -- not accepted
  Pilosocereus luetzelburgii (Vaupel) Byles & G.D. Rowley -- not accepted
  Pilosocereus machrisii (E.Y. Dawson) Backeb. -- accepted
  Pilosocereus magnificus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus maxonii (Rose) Byles & G.D. Rowley -- not accepted
  Pilosocereus millspaughii (Britton) Byles & G.D. Rowley -- not accepted
  Pilosocereus minensis (Werderm.) Byles & G.D. Rowley -- not accepted
  Pilosocereus mollispinus P.J. Braun & Esteves -- accepted
  Pilosocereus monoclonos (DC.) Byles & G.D. Rowley -- not accepted
  Pilosocereus moritzianus (Otto) Byles & G.D. Rowley -- not accepted
  Pilosocereus mortensenii (Croizat) Backeb. -- not accepted
  Pilosocereus mucosiflorus (Buining & Brederoo) F. Ritter -- not accepted
  Pilosocereus multicostatus F. Ritter -- accepted
  Pilosocereus nobilis (Haw.) Byles & G.D. Rowley -- not accepted
  Pilosocereus oligolepis (Vapel) Byles & G.D. Rowley -- accepted
  Pilosocereus oligolepis ssp. kanukuensis (Alexander) P.J. Braun & Esteves -- not accepted
  Pilosocereus oreus F. Ritter -- not accepted
  Pilosocereus pachycladus F. Ritter -- accepted
  Pilosocereus pachycladus ssp. pachycladus F. Ritter -- accepted
  Pilosocereus pachycladus ssp. pernambucoensis (F. Ritter) Zappi -- accepted
  Pilosocereus palmeri (Rose) Byles & G.D. Rowley -- not accepted
  Pilosocereus paraguayensis F. Ritter -- not accepted
  Pilosocereus parvus (Diers & Esteves) P.J. Braun & Esteves -- accepted
  Pilosocereus pentaedrophorus (Labour.) Byles & G.D. Rowley -- accepted
  Pilosocereus pentaedrophorus ssp. pentaedrophorus (Labour.) Byles & G.D. Rowley -- accepted
  Pilosocereus pentaedrophorus ssp. robustus Zappi -- accepted
  Pilosocereus pernambucoensis var. caesius F. Ritter -- not accepted
  Pilosocereus piauhyensis (Gürke) Byles & G.D. Rowley -- accepted
  Pilosocereus piauhyensis ssp. gaturianensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus piauhyensis ssp. mucosiflorus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Pilosocereus pleurocarpus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus polygonus (Lam.) Byles & G.D. Rowley -- accepted
  Pilosocereus purpusii (Britton & Rose) Byles & G.D. Rowley -- accepted
  Pilosocereus pusillibaccatus P.J. Braun & Esteves -- accepted
  Pilosocereus pusilliflorus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus quadricentralis (E.Y. Dawson) Backeb. -- accepted
  Pilosocereus quadricostatus F. Ritter -- not accepted
  Pilosocereus rizzoanus P.J. Braun & Esteves -- not accepted
  Pilosocereus rizzoianus P.J. Braun & Esteves -- not accepted
  Pilosocereus robinii (Lem.) Byles & G.D. Rowley -- accepted -- Key tree cactus
  Pilosocereus robustus F. Ritter -- not accepted
  Pilosocereus rosae P.J. Braun -- not accepted
  Pilosocereus royenii (L.) Byles & G.D. Rowley -- accepted -- Royen's tree cactus
  Pilosocereus rupicola (Werderm.) Byles & G.D. Rowley -- not accepted
  Pilosocereus ruschianus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Pilosocereus salvadorensis (Werderm.) Byles & G.D. Rowley -- not accepted
  Pilosocereus sartorianus (Rose) Byles & G.D. Rowley -- not accepted
  Pilosocereus saudadensis F. Ritter -- not accepted
  Pilosocereus schoebelii P.J. Braun -- not accepted
  Pilosocereus sergipensis (Werderm.) Byles & G.D. Rowley -- not accepted
  Pilosocereus splendidus F. Ritter -- accepted
  Pilosocereus sublanatus (Salm-Dyck) Byles & G.D. Rowley -- not accepted
  Pilosocereus superbus F. Ritter -- not accepted
  Pilosocereus superfloccosus (Buining & Brederoo) F. Ritter -- not accepted
  Pilosocereus supthutianus P.J. Braun -- not accepted
  Pilosocereus swartzii (Griseb.) Byles & G.D. Rowley -- not accepted
  Pilosocereus tehuacanus (Weing.) Byles & G.D. Rowley -- not accepted
  Pilosocereus tillianus R. Gruber & Schatzl -- not accepted
  Pilosocereus tuberculatus (Werderm.) Byles & G.D. Rowley -- accepted
  Pilosocereus tuberculosus Rauh & Backeb. ex Byles & G.D. Rowley -- not accepted
  Pilosocereus tweedyanus (Britton & Rose) Byles & G.D. Rowley -- accepted
  Pilosocereus ulei (K. Schum.) Byles & G.D. Rowley -- accepted
  Pilosocereus urbanianus (K. Schum.) Byles & G.D. Rowley -- not accepted
  Pilosocereus vilaboensis (Diers & Esteves) P.J. Braun & Esteves -- accepted
  Pilosocereus werdermannianus (Buining & Brederoo) F. Ritter -- not accepted
  Pilosocereus X occultiflorus P.J. Braun & Esteves -- accepted
  Pilosocereus X subsimilis Rizzini & A. Mattos -- accepted
  Pilosocereus zehnteri (Britton & Rose) F. Ritter -- not accepted
  Piptanthocereus (A. Berger) Riccob. -- not accepted
  Piptanthocereus aethiops (Haw.) F. Ritter -- not accepted
  Piptanthocereus bageanus F. Ritter -- not accepted
  Piptanthocereus cabralensis F. Ritter -- not accepted
  Piptanthocereus calcirupicola F. Ritter -- not accepted
  Piptanthocereus cipoensis F. Ritter -- not accepted
  Piptanthocereus colosseus F. Ritter -- not accepted
  Piptanthocereus comarapanus (Cárdenas) F. Ritter -- not accepted
  Piptanthocereus crassisepalus (Buining & Brederoo) F. Ritter -- not accepted
  Piptanthocereus dayamii (Speg.) F. Ritter -- not accepted
  Piptanthocereus goiasensis F. Ritter -- not accepted
  Piptanthocereus huilunchu (Cárdenas) F. Ritter -- not accepted
  Piptanthocereus lanosus F. Ritter -- not accepted
  Piptanthocereus neonesioticus F. Ritter -- not accepted
  Piptanthocereus neonesioticus var. interior F. Ritter -- not accepted
  Piptanthocereus sericifer F. Ritter -- not accepted
  Piptanthocereus stenogonus (K. Schum.) F. Ritter -- not accepted
  Piptanthocereus uruguayanus F. Ritter -- not accepted
  Piptanthocereus xanthocarpus (K. Schum.) F. Ritter -- not accepted
  Platyopuntia (Engelm.) Fric & Schelle ex Kreuz. -- not accepted
  Platyopuntia albisaetacens (Backeb.) F. Ritter -- not accepted
  Platyopuntia apurimacensis F. Ritter -- not accepted
  Platyopuntia atroglobosa (Backeb.) F. Ritter -- not accepted
  Platyopuntia brachyacantha F. Ritter -- not accepted
  Platyopuntia brunneogemmia F. Ritter -- not accepted
  Platyopuntia cardiosperma (K. Schum.) F. Ritter -- not accepted
  Platyopuntia chilensis F. Ritter -- not accepted
  Platyopuntia cognata F. Ritter -- not accepted
  Platyopuntia cordobensis (Speg.) F. Ritter -- not accepted
  Platyopuntia corrugata (Salm-Dyck) F. Ritter -- not accepted
  Platyopuntia discolor (Britton & Rose) F. Ritter -- not accepted
  Platyopuntia dumetorum (A. Berger) F. Ritter -- not accepted
  Platyopuntia ianthinantha F. Ritter -- not accepted
  Platyopuntia inamoena (K. Schum.) F. Ritter -- not accepted
  Platyopuntia infesta F. Ritter -- not accepted
  Platyopuntia interjecta F. Ritter -- not accepted
  Platyopuntia kiska-loro (Speg.) F. Ritter -- not accepted
  Platyopuntia limitata F. Ritter -- not accepted
  Platyopuntia microdisca (F.A.C. Weber) F. Ritter -- not accepted
  Platyopuntia nana (Kunth) F. Ritter -- not accepted
  Platyopuntia nigrispina (K. Schum.) F. Ritter -- not accepted
  Platyopuntia orurensis (Cárdenas) F. Ritter -- not accepted
  Platyopuntia pituitosa F. Ritter -- not accepted
  Platyopuntia pyrrhantha F. Ritter -- not accepted
  Platyopuntia quimilo (K. Schum.) F. Ritter -- not accepted
  Platyopuntia quitensis (F.A.C. Weber) F. Ritter -- not accepted
  Platyopuntia retrorsa (Speg.) F. Ritter -- not accepted
  Platyopuntia rubrogemmia F. Ritter -- not accepted
  Platyopuntia salmiana (Pfeiff.) F. Ritter -- not accepted
  Platyopuntia saxatilis F. Ritter -- not accepted
  Platyopuntia soehrensii (Britton & Rose) F. Ritter -- not accepted
  Platyopuntia spinibarbis F. Ritter -- not accepted
  Platyopuntia viridirubra F. Ritter -- not accepted
  Platyopuntia vitelliniflora F. Ritter -- not accepted
  Polaskia Backeb. -- accepted
  Polaskia chende (Rol.-Goss.) A.C. Gibson & K.E. Horak -- accepted
  Polaskia chichipe (Rol.-Goss.) Backeb. -- accepted
  Praecereus Buxb. -- accepted
  Praecereus amazonicus (K. Schum.) Buxb. -- not accepted
  Praecereus apoloensis (Cárdenas) Buxb. -- not accepted
  Praecereus campinensis (Backeb. & Voll) Buxb. -- not accepted
  Praecereus euchlorus (F.A.C. Weber ex K. Schum.) N.P. Taylor -- accepted
  Praecereus euchlorus ssp. amazonicus (K. Schum. ex Vaupel) N.P. Taylor -- accepted
  Praecereus euchlorus ssp. diffusus (Britton & Rose) N.P. Taylor -- accepted
  Praecereus euchlorus ssp. euchlorus (F.A.C. Weber ex K. Schum.) N.P. Taylor -- accepted
  Praecereus euchlorus ssp. jaenensis (Rauh & Backeb.) Ostolaza -- accepted
  Praecereus euchlorus ssp. smithianus (Britton & Rose) N.P. Taylor -- accepted
  Praecereus jaenensis (Rauh & Backeb.) Buxb. -- not accepted
  Praecereus maritimus (Britton & Rose) Buxb. -- not accepted
  Praecereus saxicola (Morong) N.P. Taylor -- accepted
  Praecereus smithianus (Britton & Rose) Buxb. -- not accepted
  Pseudoacanthocereus F. Ritter -- accepted
  Pseudoacanthocereus boreominarum Rizzini & A. Mattos -- not accepted
  Pseudoacanthocereus brasiliensis (Britton & Rose) F. Ritter -- accepted
  Pseudoacanthocereus sicariguensis (Croizat & Tamayo) N.P. Taylor -- accepted
  Pseudoespostoa Backeb. -- not accepted
  Pseudoespostoa melanostele (Vaupel) Backeb. -- not accepted
  Pseudoespostoa nana (F. Ritter) Backeb. -- not accepted
  Pseudolobivia (Backeb.) Backeb. -- not accepted
  Pseudolobivia ancistrophora (Speg.) Backeb. -- not accepted
  Pseudolobivia aurea (Britton & Rose) Backeb. -- not accepted
  Pseudolobivia boyuibensis (F. Ritter) Backeb. -- not accepted
  Pseudolobivia callichroma (Cárdenas) Backeb. -- not accepted
  Pseudolobivia calorubra (Cárdenas) Backeb. -- not accepted
  Pseudolobivia carmineiflora Werner Hoffm. & Backeb. -- not accepted
  Pseudolobivia ferox (Britton & Rose) Backeb. -- not accepted
  Pseudolobivia hamatacantha (Backeb.) Backeb. -- not accepted
  Pseudolobivia kermesina Krainz -- not accepted
  Pseudolobivia kratochviliana (Backeb.) Backeb. -- not accepted
  Pseudolobivia lecoriensis (Cárdenas) Backeb. -- not accepted
  Pseudolobivia leucorhodantha (Backeb.) Backeb. ex Krainz -- not accepted
  Pseudolobivia longispina (Britton & Rose) Backeb. ex Krainz -- not accepted
  Pseudolobivia obrepanda (Salm-Dyck) Backeb. ex Krainz -- not accepted
  Pseudolobivia orozasana (F. Ritter) Backeb. -- not accepted
  Pseudolobivia pelecyrhachis (Backeb.) Backeb. ex Krainz -- not accepted
  Pseudolobivia pelecyrhachis var. lobivioides (Backeb.) Backeb. -- not accepted
  Pseudolobivia polyancistra (Backeb.) Backeb. -- not accepted
  Pseudolobivia potosina (Werderm.) Backeb. ex Krainz -- not accepted
  Pseudolobivia rojasii (Cárdenas) Backeb. -- not accepted
  Pseudolobivia toralapana (Cárdenas) Backeb. -- not accepted
  Pseudolobivia torrecillasensis (Cárdenas) Backeb. -- not accepted
  Pseudolobivia wilkeae Backeb. -- not accepted
  Pseudomammillaria Buxb. -- not accepted
  Pseudomammillaria albescens (Tiegel) Buxb. -- not accepted
  Pseudomammillaria camptotricha (Dams) Buxb. -- not accepted
  Pseudomammillaria decipiens (Scheidw.) Buxb. -- not accepted
  Pseudomammillaria kraehenbuehlii Krainz -- not accepted
  Pseudomitrocereus Bravo & Buxb. -- not accepted
  Pseudomitrocereus fulviceps (F.A.C. Weber) Bravo & Buxb. -- not accepted
  Pseudonopalxochia Backeb. -- not accepted
  Pseudonopalxochia conzattiana (T. MacDoug.) Backeb. -- not accepted
  Pseudopilocereus Buxb. -- not accepted
  Pseudopilocereus arrabidae (Lem.) Buxb. -- not accepted
  Pseudopilocereus atroflavispinus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus aurilanatus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus aurisetus (Werderm.) Buxb. -- not accepted
  Pseudopilocereus azureus Buining & Brederoo -- not accepted
  Pseudopilocereus bradei (Backeb. & Voll) Buxb. -- not accepted
  Pseudopilocereus carolinensis (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus catingicola (Gürke) Buxb. -- not accepted
  Pseudopilocereus chrysostele (Vaupel) Buxb. -- not accepted
  Pseudopilocereus cuyabensis (Backeb.) Buxb. -- not accepted
  Pseudopilocereus densiareolatus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus diersianus Esteves -- not accepted
  Pseudopilocereus flavipulvinatus Buining & Brederoo -- not accepted
  Pseudopilocereus floccosus (Backeb. & Voll) Buxb. -- not accepted
  Pseudopilocereus fulvilanatus Buining & Brederoo -- not accepted
  Pseudopilocereus gaturianensis (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus glaucochrous (Werderm.) Buxb. -- not accepted
  Pseudopilocereus gounellei (F.A.C. Weber ex K. Schum.) Buxb. -- not accepted
  Pseudopilocereus hapalacanthus (Werderm.) Buxb. -- not accepted
  Pseudopilocereus juaruensis Buining & Brederoo -- not accepted
  Pseudopilocereus luetzelburgii (Vaupel) Buxb. -- not accepted
  Pseudopilocereus machrisii (E.Y. Dawson) Buxb. -- not accepted
  Pseudopilocereus machrisii (E.Y. Dawson) Buining & Brederoo -- not accepted
  Pseudopilocereus magnificus Buining & Brederoo -- not accepted
  Pseudopilocereus mucosiflorus Buining & Brederoo -- not accepted
  Pseudopilocereus multicostatus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus nobilis (Haw.) Buxb. -- not accepted
  Pseudopilocereus oligolepis (Vapel) Buxb. -- not accepted
  Pseudopilocereus oreus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus pachycladus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus parvus Diers & Esteves -- not accepted
  Pseudopilocereus pentaedrophorus (Labour.) Buxb. -- not accepted
  Pseudopilocereus pernambucoensis (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus piauhyensis (Gürke) Buxb. -- not accepted
  Pseudopilocereus quadricostatus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus robustus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus rupicola (Werderm.) Buxb. -- not accepted
  Pseudopilocereus ruschianus Buining & Brederoo -- not accepted
  Pseudopilocereus salvadorensis (Werderm.) Buxb. -- not accepted
  Pseudopilocereus saudadensis (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus sergipensis (Werderm.) Buxb. -- not accepted
  Pseudopilocereus splendidus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus superbus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus superfloccosus Buining & Brederoo -- not accepted
  Pseudopilocereus tuberculatus (Werderm.) Buxb. -- not accepted
  Pseudopilocereus ulei (K. Schum.) Buxb. -- not accepted
  Pseudopilocereus vilaboensis Diers & Esteves -- not accepted
  Pseudopilocereus werdermannianus Buining & Brederoo -- not accepted
  Pseudopilocereus zehntneri (Britton & Rose) P.V. Heath -- not accepted
  Pseudorhipsalis Britton & Rose -- accepted
  Pseudorhipsalis acuminata Cufod. -- accepted
  Pseudorhipsalis alata (Sw.) Britton & Rose -- accepted
  Pseudorhipsalis amazonica (K. Schum.) Ralf Bauer -- accepted
  Pseudorhipsalis amazonica ssp. amazonica (K. Schum.) Ralf Bauer -- accepted
  Pseudorhipsalis amazonica ssp. chocoensis Ralf Bauer -- accepted
  Pseudorhipsalis amazonica ssp. panamensis (Britton & Rose) Ralf Bauer -- accepted
  Pseudorhipsalis himantoclada (Rol.-Goss.) Britton & Rose -- accepted
  Pseudorhipsalis horichii (Kimnach) Barthlott -- not accepted
  Pseudorhipsalis lankesteri (Kimnach) Barthlott -- accepted
  Pseudorhipsalis macrantha Alexander -- not accepted
  Pseudorhipsalis ramulosa (Salm-Dyck) Barthlott -- accepted
  Pseudorhipsalis ramulosa ssp. jamaicensis (Britton & Harris) Doweld -- accepted
  Pseudorhipsalis ramulosa ssp. ramulosa (Salm-Dyck) Barthlott -- accepted
  Pseudozygocactus Backeb. -- not accepted
  Pseudozygocactus epiphylloides (Porto & Werderm.) Backeb. -- not accepted
  Pseudozygocactus epiphylloides ssp. bradei (Porto & A. Cast.) Doweld -- not accepted
  Pseudozygocactus epiphylloides var. bradei (Porto & A. Cast.) Barthlott & N.P. Taylor -- not accepted
  Pterocactus K. Schum. -- accepted
  Pterocactus araucanus A. Cast. -- accepted
  Pterocactus australis (F.A.C. Weber) Backeb. -- accepted
  Pterocactus decipiens Gürke -- not accepted
  Pterocactus fischeri Britton & Rose -- accepted
  Pterocactus gonjianii R. Kiesling -- accepted
  Pterocactus hickenii Britton & Rose -- accepted
  Pterocactus kuntzei K. Schum. -- not accepted
  Pterocactus megliolii R. Kiesling -- accepted
  Pterocactus pumilus Britton & Rose -- not accepted
  Pterocactus reticulatus R. Kiesling -- accepted
  Pterocactus skottsbergii (Britton & Rose) Backeb. -- not accepted
  Pterocactus tuberosus (Pfeiff.) Britton & Rose -- accepted
  Pterocactus valentini Speg. -- accepted
  Pterocereus T. MacDoug. & Miranda -- not accepted
  Pterocereus foetidus T. MacDoug. & Miranda -- not accepted
  Pterocereus gaumeri ssp. foetidus (T. MacDoug. & Miranda) S. Arias & Terrazas -- not accepted
  Puna R. Kiesling -- not accepted
  Puna bonnieae D.J. Ferguson & R. Kiesling -- not accepted
  Puna clavarioides (Pfeiff.) R. Kiesling -- not accepted
  Puna subterranea (R.E. Fr.) R. Kiesling -- not accepted
  Pygmaeocereus H. Johnson & Backeb. -- accepted
  Pygmaeocereus bieblii Diers -- accepted
  Pygmaeocereus bylesianus Andreae & Backeb. -- accepted
  Pygmaeocereus familiaris F. Ritter -- not accepted
  Pyrrhocactus A. Berger -- not accepted
  Pyrrhocactus andicola (F. Ritter) F. Ritter -- not accepted
  Pyrrhocactus aricensis F. Ritter -- not accepted
  Pyrrhocactus armatus F. Ritter -- not accepted
  Pyrrhocactus aspillagae (Söhrens) F. Ritter -- not accepted
  Pyrrhocactus atrospinosus Backeb. -- not accepted
  Pyrrhocactus atroviridis F. Ritter -- not accepted
  Pyrrhocactus bulbocalyx (Werderm.) Backeb. -- not accepted
  Pyrrhocactus calderianus F. Ritter -- not accepted
  Pyrrhocactus carrizalensis F. Ritter -- not accepted
  Pyrrhocactus chaniarensis F. Ritter -- not accepted
  Pyrrhocactus chilensis (Hildm. ex K. Schum.) F. Ritter -- not accepted
  Pyrrhocactus choapensis F. Ritter -- not accepted
  Pyrrhocactus chorosensis F. Ritter -- not accepted
  Pyrrhocactus coliguayensis F. Ritter -- not accepted
  Pyrrhocactus confinis F. Ritter -- not accepted
  Pyrrhocactus crispus F. Ritter -- not accepted
  Pyrrhocactus curvispinus (Bertero ex Colla) A. Berger -- not accepted
  Pyrrhocactus deherdtianus (Backeb.) Katt. -- not accepted
  Pyrrhocactus dimorphus F. Ritter -- not accepted
  Pyrrhocactus dubius Backeb. -- not accepted
  Pyrrhocactus echinus F. Ritter -- not accepted
  Pyrrhocactus eriosyzoides (F. Ritter) F. Ritter -- not accepted
  Pyrrhocactus floccosus F. Ritter -- not accepted
  Pyrrhocactus floribundus (Backeb.) F. Ritter -- not accepted
  Pyrrhocactus garaventai (F. Ritter) F. Ritter -- not accepted
  Pyrrhocactus glaucescens F. Ritter -- not accepted
  Pyrrhocactus gracilis F. Ritter -- not accepted
  Pyrrhocactus grandiflorus F. Ritter -- not accepted
  Pyrrhocactus heinrichianus (Backeb.) F. Ritter -- not accepted
  Pyrrhocactus horridus (Colla) Backeb. -- not accepted
  Pyrrhocactus huascensis F. Ritter -- not accepted
  Pyrrhocactus intermedius F. Ritter -- not accepted
  Pyrrhocactus iquiquensis F. Ritter -- not accepted
  Pyrrhocactus jussieui (Monv.) F. Ritter -- not accepted
  Pyrrhocactus krausii F. Ritter -- not accepted
  Pyrrhocactus limariensis F. Ritter -- not accepted
  Pyrrhocactus lissocarpus F. Ritter -- not accepted
  Pyrrhocactus marksianus F. Ritter -- not accepted
  Pyrrhocactus megliolii Rausch -- not accepted
  Pyrrhocactus melanacanthus Backeb. -- not accepted
  Pyrrhocactus neohankeanus F. Ritter -- not accepted
  Pyrrhocactus odoriflorus F. Ritter -- not accepted
  Pyrrhocactus pachacoensis Rausch -- not accepted
  Pyrrhocactus pamaensis F. Ritter -- not accepted
  Pyrrhocactus paucicostatus (F. Ritter) F. Ritter -- not accepted
  Pyrrhocactus pilispinus F. Ritter -- not accepted
  Pyrrhocactus platyacanthus F. Ritter -- not accepted
  Pyrrhocactus pulchellus F. Ritter -- not accepted
  Pyrrhocactus pygmaeus F. Ritter -- not accepted
  Pyrrhocactus reconditus F. Ritter -- not accepted
  Pyrrhocactus residuus F. Ritter & Buining -- not accepted
  Pyrrhocactus rupicola F. Ritter -- not accepted
  Pyrrhocactus sanjuanensis (Speg.) Backeb. -- not accepted
  Pyrrhocactus saxifragus F. Ritter -- not accepted
  Pyrrhocactus scoparius F. Ritter -- not accepted
  Pyrrhocactus setiflorus Backeb. -- not accepted
  Pyrrhocactus setosiflorus F. Ritter -- not accepted
  Pyrrhocactus setosiflorus Backeb. -- not accepted
  Pyrrhocactus simulans F. Ritter -- not accepted
  Pyrrhocactus strausianus (K. Schum.) A. Berger -- not accepted
  Pyrrhocactus subaianus Backeb. -- not accepted
  Pyrrhocactus taltalensis (Hutchison) F. Ritter -- not accepted
  Pyrrhocactus tenuis F. Ritter -- not accepted
  Pyrrhocactus totoralensis F. Ritter -- not accepted
  Pyrrhocactus transiens F. Ritter -- not accepted
  Pyrrhocactus transitensis F. Ritter -- not accepted
  Pyrrhocactus trapichensis F. Ritter -- not accepted
  Pyrrhocactus truncatipetalus F. Ritter -- not accepted
  Pyrrhocactus umadeave (Werderm.) Backeb. -- not accepted
  Pyrrhocactus vallenarensis F. Ritter -- not accepted
  Pyrrhocactus vertongenii J.G. Lamb -- not accepted
  Pyrrhocactus vexatus F. Ritter -- not accepted
  Pyrrhocactus villicumensis Rausch -- not accepted
  Pyrrhocactus vollianus Backeb. -- not accepted
  Pyrrhocactus wagenknechtii F. Ritter -- not accepted
  Quiabentia Britton & Rose -- accepted
  Quiabentia chacoensis Backeb. -- not accepted
  Quiabentia pereziensis Backeb. -- not accepted
  Quiabentia pflanzii (Vaupel) Vaupel ex A. Berger -- not accepted
  Quiabentia verticillata (Vaupel) Borg -- accepted
  Quiabentia zehntneri (Britton & Rose) Britton & Rose -- accepted
  Rapicactus Buxb. & Oehme -- not accepted
  Rapicactus beguinii (N.P. Taylor) Lüthy -- not accepted
  Rapicactus beguinii ssp. hintoniorum (A. Hofer) Lüthy -- not accepted
  Rapicactus booleanus (G.S. Hinton) D. Donati -- not accepted
  Rapicactus mandragora (A. Berger) Buxb. & Oehme -- not accepted
  Rapicactus mandragora ssp. pailanus (Halda & Panar.) Lüthy -- not accepted
  Rapicactus pailanus (Halda & Panar.) D. Donati -- not accepted
  Rapicactus subterraneus (Backeb.) Buxb. & Oehme -- not accepted
  Rapicactus subterraneus ssp. booleanus (G.S. Hinton) Lüthy -- not accepted
  Rapicactus subterraneus ssp. zaragosae (Glass & R.A. Foster) Lüthy -- not accepted
  Rapicactus zaragosae (Glass & R.A. Foster) D. Donati -- not accepted
  Rathbunia Britton & Rose -- not accepted
  Rathbunia alamosensis (J.M. Coult.) Britton & Rose -- not accepted
  Rathbunia alamosensis var. sonorensis (Runge ex K. Schum.) P.V. Heath -- not accepted
  Rathbunia kerberi (K. Schum.) Britton & Rose -- not accepted
  Rathbunia neosonorensis Backeb. -- not accepted
  Rathbunia sonorensis (Runge ex K. Schum.) Britton & Rose -- not accepted
  Rauhocereus Backeb. -- accepted
  Rauhocereus riosaniensis Backeb. -- accepted
  Rauhocereus riosaniensis ssp. jaenensis (Rauh ex Backeb.) Ostolaza -- accepted
  Rauhocereus riosaniensis ssp. riosaniensis Backeb. -- accepted
  Rebutia K. Schum. -- accepted
  Rebutia albiareolata F. Ritter -- not accepted
  Rebutia albiflora F. Ritter & Buining -- not accepted
  Rebutia albipilosa F. Ritter -- not accepted
  Rebutia albopectinata Rausch -- accepted
  Rebutia archibuiningiana F. Ritter -- not accepted
  Rebutia arenacea Cárdenas -- accepted
  Rebutia atrovirens (Backeb.) Pilbeam -- not accepted
  Rebutia auranitida (Wessner) Buining & Donald -- not accepted
  Rebutia aureiflora ssp. elegans (Backeb.) Donald -- not accepted
  Rebutia aureiflora var. elegans (Backeb.) Buining & Donald -- not accepted
  Rebutia brachyantha (Wessner) Buining & Donald -- not accepted
  Rebutia brachyantha Cárdenas -- not accepted
  Rebutia breviflora (Backeb.) D.R. Hunt -- accepted
  Rebutia brunescens Rausch -- not accepted
  Rebutia brunneoradicata F. Ritter -- not accepted
  Rebutia buiningiana Rausch -- not accepted
  Rebutia caineana Cárdenas -- not accepted
  Rebutia cajasensis F. Ritter -- not accepted
  Rebutia calliantha Bewer. -- not accepted
  Rebutia camargoensis Rausch -- not accepted
  Rebutia canacruzensis Rausch -- not accepted
  Rebutia candiae Cárdenas -- not accepted
  Rebutia canigueralii Cárdenas -- accepted
  Rebutia canigueralii ssp. crispata (Rausch) Donald ex D.R. Hunt -- not accepted
  Rebutia canigueralii ssp. pulchra (Cárdenas) Donald ex D.R. Hunt -- not accepted
  Rebutia caracarensis Cárdenas -- not accepted
  Rebutia cardenasiana (R. Vásquez) G. Navarro -- accepted
  Rebutia carmeniana Rausch -- not accepted
  Rebutia carminea Buining -- not accepted
  Rebutia christinae Rausch -- not accepted
  Rebutia chrysacantha Backeb. -- not accepted
  Rebutia cintia Hjertson -- accepted
  Rebutia cintiensis F. Ritter -- not accepted
  Rebutia colorea F. Ritter -- not accepted
  Rebutia corroana Cárdenas -- not accepted
  Rebutia costata Werderm. -- not accepted
  Rebutia cylindrica (Donald & A.B. Lau) D.R. Hunt -- accepted
  Rebutia deminuta (F.A.C. Weber) Britton & Rose -- accepted
  Rebutia deminuta ssp. deminuta (F.A.C. Weber) Britton & Rose -- accepted
  Rebutia deminuta ssp. kupperiana (Boed.) Hjertson -- accepted
  Rebutia diersiana Rausch -- not accepted
  Rebutia diersiana var. atrovirens Rausch -- not accepted
  Rebutia donaldiana A.B. Lau & G.D. Rowley -- not accepted
  Rebutia einsteinii Fric -- accepted
  Rebutia einsteinii ssp. aureiflora (Rausch) Hjertson -- accepted
  Rebutia einsteinii ssp. einsteinii Fric -- accepted
  Rebutia einsteinii ssp. gonjianii (R. Kiesling) Hjertson -- accepted
  Rebutia eos Rausch -- not accepted
  Rebutia euanthema (Backeb.) Buining & Donald -- not accepted
  Rebutia eucaliptana (Backeb.) F. Ritter -- not accepted
  Rebutia fabrisii Rausch -- accepted
  Rebutia fidana (Backeb.) D.R. Hunt -- accepted
  Rebutia fidana ssp. cintiensis (Cárdenas) D.R. Hunt -- accepted
  Rebutia fidana ssp. fidana (Backeb.) D.R. Hunt -- accepted
  Rebutia fiebrigii (Gürke) Britton & Rose -- accepted
  Rebutia fischeriana Slaba -- not accepted
  Rebutia flavistyla F. Ritter -- not accepted
  Rebutia friedrichiana Rausch -- not accepted
  Rebutia froehlichiana Rausch -- not accepted
  Rebutia frohlichiana Rausch -- not accepted
  Rebutia fulviseta Rausch -- not accepted
  Rebutia fusca F. Ritter -- not accepted
  Rebutia glomeriseta Cárdenas -- accepted
  Rebutia glomerispina Cárdenas -- not accepted
  Rebutia gonjianii R. Kiesling -- not accepted
  Rebutia graciliflora Backeb. -- not accepted
  Rebutia gracilispina F. Ritter -- not accepted
  Rebutia grandiflora Backeb. -- not accepted
  Rebutia haseltonii Cárdenas -- not accepted
  Rebutia heliosa Rausch -- accepted
  Rebutia hoffmannii Diers & Rausch -- not accepted
  Rebutia huasiensis Rausch -- not accepted
  Rebutia hyalacantha (Backeb.) Backeb. -- not accepted
  Rebutia inflexiseta Cárdenas -- not accepted
  Rebutia iridescens F. Ritter -- not accepted
  Rebutia iscayachensis Rausch -- not accepted
  Rebutia jujuyana Rausch -- not accepted
  Rebutia kariusiana Wessner -- not accepted
  Rebutia kieslingii Rausch -- not accepted
  Rebutia krainziana Kesselr. -- not accepted
  Rebutia krugerae (Cárdenas) Backeb. -- accepted
  Rebutia kupperiana Boed. -- not accepted
  Rebutia lanosiflora F. Ritter -- not accepted
  Rebutia leucanthema Rausch -- not accepted
  Rebutia mamillosa Rausch -- not accepted
  Rebutia marsoneri Werderm. -- not accepted
  Rebutia menesesii Cárdenas -- not accepted
  Rebutia mentosa (F. Ritter) Donald -- accepted
  Rebutia mentosa ssp. mentosa (F. Ritter) Donald -- accepted
  Rebutia mentosa ssp. purpurea (Donald & A.B. Lau) D.R. Hunt -- accepted
  Rebutia minuscula K. Schum. -- accepted
  Rebutia minuscula ssp. grandiflora (Backeb.) Donald -- not accepted
  Rebutia minuscula ssp. violaciflora (Backeb.) Donald -- not accepted
  Rebutia minuscula var. grandiflora (Backeb.) Krainz -- not accepted
  Rebutia minutissima F. Ritter -- not accepted
  Rebutia mixta F. Ritter -- not accepted
  Rebutia mixticolor F. Ritter -- not accepted
  Rebutia mudanensis Rausch -- not accepted
  Rebutia muscula F. Ritter & Thiele -- not accepted
  Rebutia narvaecense (Cárdenas) Donald -- not accepted
  Rebutia neocumingii (Backeb.) D.R. Hunt -- accepted
  Rebutia neocumingii ssp. lanata (F. Ritter) D.R. Hunt -- accepted
  Rebutia neocumingii ssp. neocumingii (Backeb.) D.R. Hunt -- accepted
  Rebutia neocumingii ssp. pilcomayensis (Cárdenas) D.R. Hunt -- not accepted
  Rebutia neocumingii ssp. pulquinensis (Cárdenas) D.R. Hunt -- accepted
  Rebutia neocumingii ssp. riograndensis (F. Ritter) D.R. Hunt -- not accepted
  Rebutia neocumingii ssp. saipinensis (F.H. Brandt) D.R. Hunt -- not accepted
  Rebutia neocumingii ssp. trollii (Oeser) D.R. Hunt -- not accepted
  Rebutia neumanniana (Werderm.) D.R. Hunt -- accepted
  Rebutia nigricans (Wessner) Pilbeam -- not accepted
  Rebutia nitida F. Ritter -- not accepted
  Rebutia nogalesensis F. Ritter -- not accepted
  Rebutia oculata Werderm. -- not accepted
  Rebutia odontopetala F. Ritter -- not accepted
  Rebutia oligacantha (F.H. Brandt) D.R. Hunt -- accepted
  Rebutia orurensis (Backeb.) F. Ritter -- not accepted
  Rebutia padcayensis Rausch -- accepted
  Rebutia pallida Rausch -- not accepted
  Rebutia patericalyx F. Ritter -- not accepted
  Rebutia pauciareolata F. Ritter -- not accepted
  Rebutia paucicostata F. Ritter -- not accepted
  Rebutia perplexa Donald -- not accepted
  Rebutia poecilantha F. Ritter -- not accepted
  Rebutia polymorpha Cárdenas -- not accepted
  Rebutia potosina F. Ritter -- not accepted
  Rebutia pseudodeminuta Backeb. -- not accepted
  Rebutia pseudominuscula (Speg.) Britton & Rose -- not accepted
  Rebutia pulchella Rausch -- not accepted
  Rebutia pulchera Cárdenas -- not accepted
  Rebutia pulchra Cárdenas -- accepted
  Rebutia pulvinosa F. Ritter & Buining -- accepted
  Rebutia pulvinosa ssp. albiflora (F. Ritter & Buining) Hjertson -- accepted
  Rebutia pulvinosa ssp. perplexa (Donald) Hjertson -- accepted
  Rebutia pulvinosa ssp. pulvinosa F. Ritter & Buining -- accepted
  Rebutia pygmaea (R.E. Fr.) Britton & Rose -- accepted
  Rebutia raulii Rausch -- not accepted
  Rebutia rauschii Zecher -- not accepted
  Rebutia ritteri (Wessner) Buining & Donald -- accepted
  Rebutia robustispina F. Ritter -- not accepted
  Rebutia rosalbiflora F. Ritter -- not accepted
  Rebutia rosalbiflora var. amblypetala F. Ritter -- not accepted
  Rebutia rubiginosa F. Ritter -- not accepted
  Rebutia rutiliflora F. Ritter -- not accepted
  Rebutia salpingantha F. Ritter -- not accepted
  Rebutia sanguinea F. Ritter -- not accepted
  Rebutia sarothroides Werderm. -- not accepted
  Rebutia schatzliana Rausch -- not accepted
  Rebutia senilis Backeb. -- not accepted
  Rebutia senilis ssp. chrysacantha (Backeb.) Donald -- not accepted
  Rebutia senilis var. chrysacantha (Backeb.) Donald -- not accepted
  Rebutia simoniana Rausch -- not accepted
  Rebutia singularis F. Ritter -- not accepted
  Rebutia spegazziniana Backeb. -- not accepted
  Rebutia spinosissima Backeb. -- not accepted
  Rebutia steinbachii Werderm. -- accepted
  Rebutia steinbachii ssp. kruegerae (Cárdenas) D.R. Hunt -- not accepted
  Rebutia steinbachii ssp. steinbachii Werderm. -- accepted
  Rebutia steinbachii ssp. tiraquensis (Cárdenas) D.R. Hunt -- accepted
  Rebutia steinbachii ssp. verticillacantha (F. Ritter) D.R. Hunt -- accepted
  Rebutia steinmannii (Solms) Britton & Rose -- accepted
  Rebutia sumayana Rausch -- not accepted
  Rebutia supthutiana Rausch -- not accepted
  Rebutia tamboensis F. Ritter -- not accepted
  Rebutia taratensis Cárdenas -- not accepted
  Rebutia tarijensis Rausch -- accepted
  Rebutia tarvitaensis F. Ritter -- not accepted
  Rebutia tiraquensis Cárdenas -- not accepted
  Rebutia torquata F. Ritter & Buining -- not accepted
  Rebutia tropaeolipicta F. Ritter -- not accepted
  Rebutia tuberculato-chrysantha Cárdenas -- not accepted
  Rebutia tuberosa F. Ritter -- not accepted
  Rebutia tunariensis Cárdenas -- not accepted
  Rebutia vallegrandensis Cárdenas -- not accepted
  Rebutia vasqueziana (Rausch) D.R. Hunt -- accepted
  Rebutia villazonensis F.H. Brandt -- not accepted
  Rebutia violaciflora Backeb. -- not accepted
  Rebutia violascens F. Ritter -- not accepted
  Rebutia vizcarrae Cárdenas -- not accepted
  Rebutia vulpina F. Ritter -- not accepted
  Rebutia wahliana Rausch -- not accepted
  Rebutia walteri Diers -- not accepted
  Rebutia wessneriana Bewer. -- not accepted
  Rebutia wessneriana ssp. beryllioides (Buining & Donald) Donald -- not accepted
  Rebutia wessneriana var. beryllioides (Buining & Donald) Buining & Donald -- not accepted
  Rebutia xanthocarpa Backeb. -- not accepted
  Rebutia yuquinensis Rausch -- not accepted
  Rebutia zecheri Rausch -- not accepted
  Reicheocactus Backeb. -- not accepted
  Reicheocactus floribundus Backeb. -- not accepted
  Reicheocactus neoreichei (Backeb.) Backeb. -- not accepted
  Reicheocactus pseudoreicheanus Backeb. -- not accepted
  Rhipsalidopsis Britton & Rose -- not accepted
  Rhipsalidopsis gaertneri (Regel) Linding. -- not accepted
  Rhipsalidopsis rosea (Lagerh.) Britton & Rose -- not accepted
  Rhipsalis Gaertn. -- accepted
  Rhipsalis aculeata F.A.C. Weber -- not accepted
  Rhipsalis agudoensis N.P. Taylor -- accepted
  Rhipsalis alboareolata F. Ritter -- not accepted
  Rhipsalis angustissima F.A.C. Weber -- not accepted
  Rhipsalis angustissimus F.A.C. Weber -- not accepted
  Rhipsalis asperula Vaupel -- not accepted
  Rhipsalis baccifera (Sol. ex J.M. Mill.) Stearn -- accepted -- Nopalillo-mal ojo, mistletoe cactus
  Rhipsalis baccifera ssp. baccifera (Sol. ex J.M. Mill.) Stearn -- accepted
  Rhipsalis baccifera ssp. cleistogama M. Kessler, Ibisch & Barthlott -- accepted
  Rhipsalis baccifera ssp. erythrocarpa (K. Schum.) Barthlott -- accepted
  Rhipsalis baccifera ssp. fortdauphinensis Süpplie -- not accepted
  Rhipsalis baccifera ssp. hileiabaiana N.P. Taylor & Barthlott -- accepted
  Rhipsalis baccifera ssp. horrida (Baker) Barthlott -- accepted
  Rhipsalis baccifera ssp. mauritiana (DC.) Barthlott -- accepted
  Rhipsalis baccifera ssp. shaferi (Britton & Rose) Barthlott & N.P. Taylor -- accepted
  Rhipsalis bartlettii Clover -- not accepted
  Rhipsalis boliviana (Britton) Lauterb. ex Buchtien -- not accepted
  Rhipsalis brevispina (Barthlott) Kimnach -- not accepted
  Rhipsalis burchellii Britton & Rose -- accepted
  Rhipsalis campos-portoana Loefgr. -- accepted
  Rhipsalis capilliformis F.A.C. Weber -- not accepted
  Rhipsalis cassutha Gaertn. -- not accepted -- mistletoe cactus
  Rhipsalis cassuthopsis Backeb. -- not accepted
  Rhipsalis cassytha Gaertn. -- not accepted
  Rhipsalis cassythoides Loefgr. -- not accepted
  Rhipsalis cassythoydes Loefgr. -- not accepted
  Rhipsalis cereoides (Backeb. & Voll) Backeb. -- accepted
  Rhipsalis cereuscula Haw. -- accepted
  Rhipsalis chloroptera F.A.C. Weber -- not accepted
  Rhipsalis chrysantha Loefgr. -- not accepted
  Rhipsalis chrysocarpa Loefgr. -- not accepted
  Rhipsalis clavata F.A.C. Weber -- accepted
  Rhipsalis clavellina F. Ritter -- not accepted
  Rhipsalis crenata (Britton) Vaupel -- not accepted
  Rhipsalis crispata Pfeiff. -- accepted
  Rhipsalis crispimarginata Loefgr. -- not accepted
  Rhipsalis cuneata Britton & Rose -- accepted
  Rhipsalis densiareolata Loefgr. -- not accepted
  Rhipsalis dissimilis (G. Lindb.) K. Schum. -- accepted
  Rhipsalis dusenii Hjelmq. -- not accepted
  Rhipsalis elliptica G. Lindb. ex K. Schum. -- accepted
  Rhipsalis erythrocarpa K. Schum. -- not accepted
  Rhipsalis ewaldiana Barthlott & N.P. Taylor -- accepted
  Rhipsalis fastigiata Hjelmq. -- not accepted
  Rhipsalis floccosa Salm-Dyck ex Pfeiff. -- accepted
  Rhipsalis floccosa ssp. floccosa Salm-Dyck ex Pfeiff. -- accepted
  Rhipsalis floccosa ssp. hohenauensis (F. Ritter) Barthlott & N.P. Taylor -- accepted
  Rhipsalis floccosa ssp. oreophila N.P. Taylor & Zappi -- accepted
  Rhipsalis floccosa ssp. pittieri (Britton & Rose) Barthlott & N.P. Taylor -- accepted
  Rhipsalis floccosa ssp. pulvinigera (G. Lindb.) Barthlott & N.P. Taylor -- accepted
  Rhipsalis floccosa ssp. tucumanensis (F.A.C. Weber) Barthlott & N.P. Taylor -- accepted
  Rhipsalis flosculosa F. Ritter -- not accepted
  Rhipsalis gibberula F.A.C. Weber -- not accepted
  Rhipsalis gonocarpa F.A.C. Weber -- not accepted
  Rhipsalis grandiflora Haw. -- accepted
  Rhipsalis hadrosoma G. Lindb. -- not accepted
  Rhipsalis heptagona Rauh & Backeb. -- not accepted
  Rhipsalis herminiae (Porto & A. Cast.) Kimnach -- not accepted
  Rhipsalis heteroclada Britton & Rose -- not accepted
  Rhipsalis hoelleri Barthlott & N.P. Taylor -- accepted
  Rhipsalis hohenauensis F. Ritter -- not accepted
  Rhipsalis houlletiana Lem. -- not accepted
  Rhipsalis hylaea F. Ritter -- not accepted
  Rhipsalis incachacana Cárdenas -- not accepted
  Rhipsalis jamaicensis Britton & Harris -- not accepted
  Rhipsalis juengeri Barthlott & N.P. Taylor -- accepted
  Rhipsalis kirbergii Barthlott -- not accepted
  Rhipsalis leiophloea Vaupel -- not accepted
  Rhipsalis leucorhaphis K. Schum. -- not accepted
  Rhipsalis lindbergiana K. Schum. -- accepted
  Rhipsalis linearis K. Schum. -- not accepted
  Rhipsalis loefgrenii Britton & Rose -- not accepted
  Rhipsalis lorentziana Griseb. -- not accepted
  Rhipsalis maricaensis Scheinvar -- not accepted
  Rhipsalis megalantha Loefgr. -- not accepted
  Rhipsalis mesembryanthemoides Haw. -- accepted
  Rhipsalis micrantha DC. -- accepted
  Rhipsalis minutiflora K. Schum. -- not accepted
  Rhipsalis miyagawae (Barthlott & Rauh) Kimnach -- not accepted
  Rhipsalis monteazulensis F. Ritter -- not accepted
  Rhipsalis neves-armondii K. Schum. -- accepted
  Rhipsalis oblonga Loefgr. -- accepted
  Rhipsalis occidentalis Barthlott -- accepted
  Rhipsalis olivifera N.P. Taylor & Zappi -- accepted
  Rhipsalis ormindoi N.P. Taylor & Zappi -- accepted
  Rhipsalis pacheco-leonis Loefgr. -- accepted
  Rhipsalis pacheco-leonis ssp. catenulata (Kimnach) Barthlott & N.P. Taylor -- accepted
  Rhipsalis pachyptera Pfeiff. -- accepted
  Rhipsalis paradoxa (Salm-Dyck ex Pfeiff.) Salm-Dyck -- accepted
  Rhipsalis paradoxa ssp. paradoxa (Salm-Dyck ex Pfeiff.) Salm-Dyck -- accepted
  Rhipsalis paradoxa ssp. septentrionalis N.P. Taylor & Barthlott -- accepted
  Rhipsalis paranganiensis (Cárdenas) Kimnach -- not accepted
  Rhipsalis pentaptera A. Dietr. -- accepted
  Rhipsalis pilocarpa Loefgr. -- accepted
  Rhipsalis pilosa F.A.C. Weber ex K. Schum. -- not accepted
  Rhipsalis pittieri Britton & Rose -- not accepted
  Rhipsalis prismatica (Lem.) Rümpler -- not accepted
  Rhipsalis pulchra Loefgr. -- accepted
  Rhipsalis pulvinigera G. Lindb. -- not accepted
  Rhipsalis puniceodiscus G. Lindb. -- accepted
  Rhipsalis purpusii Weing. -- not accepted
  Rhipsalis rauhiorum Barthlott -- not accepted
  Rhipsalis rigida Loefgr. -- not accepted
  Rhipsalis riocampanensis Madsen & Z. Aguirre -- not accepted
  Rhipsalis robusta G. Lindb. -- not accepted
  Rhipsalis roseana A. Berger -- not accepted
  Rhipsalis russellii Britton & Rose -- accepted
  Rhipsalis saxatile (Friedrich, Redecker & Backeb.) Friedrich & Redecker -- not accepted
  Rhipsalis shaferi Britton & Rose -- not accepted
  Rhipsalis simmleri Beauverd -- not accepted
  Rhipsalis spinescens Lombardi -- not accepted
  Rhipsalis squamulosa K. Schum. -- not accepted
  Rhipsalis sulcata F.A.C. Weber -- accepted
  Rhipsalis teres Steud. -- accepted
  Rhipsalis tonduzii F.A.C. Weber -- not accepted
  Rhipsalis trigona Pfeiff. -- accepted
  Rhipsalis tucumanensis F.A.C. Weber -- not accepted
  Rhipsalis undulata Pfeiff. -- not accepted
  Rhipsalis virgata F.A.C. Weber -- not accepted
  Rhipsalis warmingiana K. Schum. -- not accepted
  Rhipsalis wercklei A. Berger -- not accepted
  Rhodocactus (A. Berger) F.M. Knuth -- not accepted
  Rhodocactus antonianus Backeb. -- not accepted
  Rhodocactus autumnalis (Eichlam) F.M. Knuth -- not accepted
  Rhodocactus bleo (Kunth) F.M. Knuth -- not accepted
  Rhodocactus colombianus (Britton & Rose) F.M. Knuth -- not accepted
  Rhodocactus corrugatus (Cutak) Backeb. -- not accepted
  Rhodocactus cubensis (Britton & Rose) F.M. Knuth -- not accepted
  Rhodocactus grandifolius (Haw.) F.M. Knuth -- not accepted
  Rhodocactus guamacho (F.A.C. Weber) F.M. Knuth -- not accepted
  Rhodocactus higueranus (Cárdenas) Backeb. -- not accepted
  Rhodocactus lychnidiflorus (DC.) F.M. Knuth -- not accepted
  Rhodocactus nicoyanus (F.A.C. Weber) F.M. Knuth -- not accepted
  Rhodocactus portulacifolius (L.) F.M. Knuth -- not accepted
  Rhodocactus sacharosa (Griseb.) Backeb. -- not accepted
  Rhodocactus saipinensis (Cárdenas) Backeb. -- not accepted
  Rhodocactus tampicanus (F.A.C. Weber) Backeb. -- not accepted
  Rhodocactus zinniiflorus (DC.) F.M. Knuth -- not accepted
  Rimacactus Mottram -- not accepted
  Rimacactus laui (Lüthy) Mottram -- not accepted
  Ritterocereus Backeb. -- not accepted
  Ritterocereus deficiens (Otto & A. Dietr.) Backeb. -- not accepted
  Ritterocereus eichlamii (Britton & Rose) Backeb. -- not accepted
  Ritterocereus griseus (Haw.) Backeb. -- not accepted
  Ritterocereus laevigatus (Salm-Dyck) Backeb. -- not accepted
  Ritterocereus pruinosus (Otto ex Pfeiff.) Backeb. -- not accepted
  Ritterocereus queretaroensis (F.A.C. Weber) Backeb. -- not accepted
  Ritterocereus standleyi (J.G. Ortega) Backeb. -- not accepted
  Rodentiophila F. Ritter & Y. Itô -- not accepted
  Rodentiophila atacamensis F. Ritter & Y. Itô -- not accepted
  Rodentiophila megacarpa F. Ritter & Y. Itô -- not accepted
  Rooksbya (Backeb.) Backeb. -- not accepted
  Rooksbya euphorbioides (Haw.) Backeb. -- not accepted
  Roseocactus A. Berger -- not accepted
  Roseocactus fissuratus (Engelm.) A. Berger -- not accepted
  Roseocactus intermedius Backeb. & Kilian -- not accepted
  Roseocactus kotschoubeyanus (Lem.) A. Berger -- not accepted
  Roseocactus kotschoubeyanus ssp. macdowellii Backeb. -- not accepted
  Roseocactus kotschoubeyanus var. albiflorus Backeb. -- not accepted
  Roseocactus kotschoubeyanus var. macdowellii (Backeb.) Backeb. -- not accepted
  Roseocactus lloydii (Rose) A. Berger -- not accepted
  Roseocereus Backeb. -- not accepted
  Roseocereus tephracanthus (Labour.) Backeb. -- not accepted
  Samaipaticereus Cárdenas -- accepted
  Samaipaticereus corroanus Cárdenas -- accepted
  Samaipaticereus inquisivensis Cárdenas -- not accepted
  Schlumbergera Lem. -- accepted
  Schlumbergera gaertneri (Regel) Britton & Rose -- not accepted
  Schlumbergera kautskyi (Horobin & McMillan) N.P. Taylor -- accepted
  Schlumbergera microsphaerica (K. Schum.) Hoevel -- accepted
  Schlumbergera obtusangula (K. Schum.) D.R. Hunt -- not accepted
  Schlumbergera opuntioides (Loefgr. & Dusén) D.R. Hunt -- accepted
  Schlumbergera orssichiana Barthlott & McMillan -- accepted
  Schlumbergera russelliana (Hook.) Britton & Rose -- accepted
  Schlumbergera truncata (Haw.) Moran -- accepted -- false Christmas cactus
  Schlumbergera truncata ssp. kautskyi Horobin & McMillan -- not accepted
  Schlumbergera X buckleyi D.R. Hunt -- accepted
  Sclerocactus Britton & Rose -- accepted -- fishhook cactus
  Sclerocactus blainei S.L. Welsh & K.H. Thorne -- accepted -- Blaine's fishhook cactus
  Sclerocactus brevispinus K.D. Heil & J.M. Porter -- accepted -- shortspine fishhook cactus, Pariette cactus
  Sclerocactus cloverae K.D. Heil & J.M. Porter -- accepted
  Sclerocactus cloverae ssp. brackii K.D. Heil & J.M. Porter -- accepted
  Sclerocactus cloverae ssp. cloverae K.D. Heil & J.M. Porter -- accepted
  Sclerocactus cloveriae K.D. Heil & J.M. Porter -- not accepted -- Clover's fishhook cactus
  Sclerocactus cloveriae ssp. brackii K.D. Heil & J.M. Porter -- not accepted
  Sclerocactus contortus K.D. Heil -- not accepted -- Canyonlands fishhook cactus
  Sclerocactus erectocentrus (J.M. Coult.) N.P. Taylor -- accepted -- redspine fishhook cactus, Biznaga-bola de centrales erectas
  Sclerocactus erectocentrus var. acunensis (W.T. Marshall) Bravo -- accepted
  Sclerocactus erectocentrus var. erectocentrus (J.M. Coult.) N.P. Taylor -- accepted
  Sclerocactus franklinii J.W. Evans -- not accepted
  Sclerocactus glaucus (K. Schum.) L.D. Benson -- accepted -- Uinta Basin hookless cactus, Colorado hookless cactus
  Sclerocactus havasupaiensis Clover -- not accepted
  Sclerocactus intermedius Peebles -- not accepted
  Sclerocactus intertextus (Engelm.) N.P. Taylor -- accepted -- white fishhook cactus, white fish-hook cactus, Biznaga-bola entretejida
  Sclerocactus johnsonii (Parry ex Engelm.) N.P. Taylor -- accepted -- Johnson's fishhook cactus, Johnson's barrel cactus, pygmy barrel cactus
  Sclerocactus mariposensis (Hester) N.P. Taylor -- accepted -- Lloyd's fishhook cactus, Biznaga-bola de Mariposa, Lloyd's Mariposa cactus, golfball cactus, silver column cactus
  Sclerocactus mesae-verdae (Boissev. & C. Davidson) L.D. Benson -- accepted -- Mesa Verde fishhook cactus, Mesa Verde cactus
  Sclerocactus nyensis Hochstätter -- accepted -- Nye County fishhook cactus
  Sclerocactus papyracanthus (Engelm.) N.P. Taylor -- accepted -- paperspine fishhook cactus, Biznaga-bola de espinas de papel
  Sclerocactus parviflorus Clover & Jotter -- accepted -- smallflower fishhook cactus
  Sclerocactus parviflorus ssp. havasupaiensis (Clover) Hochstätter -- not accepted
  Sclerocactus parviflorus ssp. intermedius (Peebles) K.D. Heil & J.M. Porter -- not accepted -- intermediate fishhook cactus
  Sclerocactus parviflorus var. intermedius (Peebles) D. Woodruff & L.D. Benson -- not accepted -- intermediate fishhook cactus
  Sclerocactus polyancistrus (Engelm. & J.M. Bigelow) Britton & Rose -- accepted -- redspined fishhook cactus, Mojave fishhook cactus, Mohave fishhook cactus
  Sclerocactus pubispinus (Engelm.) L.D. Benson -- accepted -- Great Basin fishhook cactus
  Sclerocactus pubispinus var. sileri L.D. Benson -- not accepted
  Sclerocactus pubispinus var. spinosior (Engelm.) S.L. Welsh -- not accepted
  Sclerocactus scheeri (Salm-Dyck) N.P. Taylor -- accepted -- Scheer's fishhook cactus, Biznaga-bola ganchuda, Tobusch fishhook cactus
  Sclerocactus sileri (L.D. Benson) K.D. Heil & J.M. Porter -- accepted
  Sclerocactus spinosior (Engelm.) D. Woodruff & L.D. Benson -- accepted -- desert valley fishhook cactus, desert valley fish-hook cactus
  Sclerocactus terrae-canyonae K.D. Heil -- not accepted -- longspine fishhook cactus
  Sclerocactus uncinatus (Galeotti ex Pfeiff.) N.P. Taylor -- accepted -- Chihuahuan fishhook cactus, Biznaga-bola uncinada
  Sclerocactus uncinatus ssp. crassihamatus (F.A.C. Weber) N.P. Taylor -- accepted
  Sclerocactus uncinatus ssp. uncinatus (Galeotti ex Pfeiff.) N.P. Taylor -- accepted
  Sclerocactus unguispinus (Engelm.) N.P. Taylor -- accepted
  Sclerocactus warnockii (L.D. Benson) N.P. Taylor -- accepted -- Warnock's fishhook cactus, Biznaga-bola amarilla
  Sclerocactus wetlandicus Hochstätter -- accepted -- Uinta Basin hookless cactus
  Sclerocactus whipplei (Engelm. & J.M. Bigelow) Britton & Rose -- accepted -- Whipple's fishhook cactus
  Sclerocactus whipplei ssp. heilii (Castetter, P. Pierce & K.H. Schwer.) D.R. Hunt -- not accepted
  Sclerocactus whipplei var. glaucus (K. Schum.) S.L. Welsh -- not accepted
  Sclerocactus whipplei var. heilii Castetter, P. Pierce & K.H. Schwer. -- not accepted -- Heil's fishhook cactus
  Sclerocactus whipplei var. intermedius (Peebles) L.D. Benson -- not accepted
  Sclerocactus whipplei var. reevsii Castetter, P. Pierce & K.H. Schwer. -- not accepted -- Reeves' fishhook cactus
  Sclerocactus whipplei var. spinosior (Engelm.) Boissev. -- not accepted
  Sclerocactus whipplei var. whipplei (Engelm. & J.M. Bigelow) Britton & Rose -- not accepted -- Whipple's fishhook cactus
  Sclerocactus wrightiae L.D. Benson -- accepted -- Wright's fishhook cactus
  Selenicereus (A. Berger) Britton & Rose -- accepted -- moonlight cactus
  Selenicereus anthonyanus (Alexander) D.R. Hunt -- accepted
  Selenicereus atropilosus Kimnach -- accepted
  Selenicereus boeckmanni (Otto ex Salm-Dyck) Britton & Rose -- not accepted
  Selenicereus brevispinus Britton & Rose -- not accepted
  Selenicereus chontalensis (Alexander) Kimnach -- not accepted
  Selenicereus chrysocardium (Alexander) Kimnach -- accepted
  Selenicereus coniflorus (Weing.) Britton & Rose -- not accepted -- coneflower moonlight cactus, Pitayita-noctirna de culebra
  Selenicereus donkelaarii (Salm-Dyck) Britton & Rose -- not accepted
  Selenicereus extensus (Salm-Dyck ex DC.) Leuenb. -- not accepted
  Selenicereus grandiflorus (L.) Britton & Rose -- accepted -- queen of the night, Pitayita-nocturna reina de la noche
  Selenicereus grandiflorus ssp. donkelaarii (Salm-Dyck) Ralf Bauer -- accepted
  Selenicereus grandiflorus ssp. grandiflorus (L.) Britton & Rose -- accepted
  Selenicereus grandiflorus ssp. hondurensis (K. Schum. ex Weing) Ralf Bauer -- accepted
  Selenicereus grandiflorus ssp. lautneri Ralf Bauer -- accepted
  Selenicereus hallensis Weing. ex Borg -- not accepted
  Selenicereus hamatus (Scheidw.) Britton & Rose -- accepted
  Selenicereus hondurensis (K. Schum. ex Weing) Britton & Rose -- not accepted
  Selenicereus inermis (Otto) Britton & Rose -- accepted
  Selenicereus kunthianus (hort. ex Salm-Dyck) Britton & Rose -- not accepted
  Selenicereus maxonii Rose -- not accepted
  Selenicereus megalanthus (K. Schum. ex Vaupel) Moran -- not accepted
  Selenicereus mirandae Bravo -- not accepted
  Selenicereus murrillii Britton & Rose -- accepted
  Selenicereus nelsonii (Weing.) Britton & Rose -- accepted
  Selenicereus pringlei Rose -- not accepted
  Selenicereus pseudospinulosus Weing. -- not accepted
  Selenicereus pteranthus (Link ex A. Dietr.) Britton & Rose -- accepted -- princess of the night, Pitayita-nocturna flor de la noche
  Selenicereus rizzini Scheinvar -- not accepted
  Selenicereus spinulosus (DC.) Britton & Rose -- accepted -- vinelike moonlight cactus, Pitayita-nocturna espinosa, nightblooming cereus
  Selenicereus urbanianus (Gürke & Weing.) Britton & Rose -- not accepted
  Selenicereus vagans (Brandegee) Britton & Rose -- accepted
  Selenicereus validus S. Arias & U. Guzmán -- accepted
  Selenicereus vaupelii (Weing.) A. Berger -- not accepted
  Selenicereus wercklei (F.A.C. Weber) Britton & Rose -- not accepted
  Seticereus Backeb. -- not accepted
  Seticereus chlorocarpus (Kunth) Backeb. -- not accepted
  Seticereus humboldtii (Kunth) Backeb. -- not accepted
  Seticereus icosagonus (Kunth) Backeb. -- not accepted
  Seticleistocactus Backeb. -- not accepted
  Seticleistocactus dependens (Cárdenas) Backeb. -- not accepted
  Seticleistocactus piraymirensis (Cárdenas) Backeb. -- not accepted
  Setiechinopsis (Backeb.) de Haas -- not accepted
  Setiechinopsis mirabilis (Speg.) Backeb. ex de Haas -- not accepted
  Siccobaccatus P.J. Braun & Esteves -- not accepted
  Siccobaccatus dolichospermaticus (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Siccobaccatus estevesii (Buining & Brederoo) P.J. Braun & Esteves -- not accepted
  Siccobaccatus insigniflorus (Diers & Esteves) P.J. Braun & Esteves -- not accepted
  Soehrensia Backeb. -- not accepted
  Soehrensia bruchii (Britton & Rose) Backeb. -- not accepted
  Soehrensia formosa (Pfeiff.) Backeb. -- not accepted
  Soehrensia ingens Backeb. -- not accepted
  Soehrensia korethroides (Werderm.) Backeb. -- not accepted
  Soehrensia oreopepon (Speg.) Backeb. -- not accepted
  Soehrensia smrziana (Speg.) Backeb. -- not accepted
  Soehrensia uebelmanniana Lembcke & Backeb. -- not accepted
  Solisia Britton & Rose -- not accepted
  Solisia pectinata (Stein) Britton & Rose -- not accepted
  Spegazzinia Backeb. -- not accepted
  Spegazzinia fidaiana (Backeb.) Backeb. -- not accepted
  Stenocactus (K. Schum.) A. Berger -- accepted
  Stenocactus albatus (A. Dietr.) F.M. Knuth -- not accepted
  Stenocactus arrigens (Link) A. Berger -- not accepted
  Stenocactus coptonogonus (Lem.) A. Berger -- accepted
  Stenocactus crispatus (DC.) A. Berger -- accepted
  Stenocactus dichroacanthus (Mart.) A. Berger ex Backeb. & F.M. Knuth -- not accepted
  Stenocactus heteracanthus (Muehlenpf.) A. Berger -- not accepted
  Stenocactus lamellosus (A. Dietr.) A. Berger -- not accepted
  Stenocactus lancifer (A. Dietr.) A. Berger ex Backeb. & F.M. Knuth -- not accepted
  Stenocactus lloydii (Britton & Rose) A. Berger -- not accepted
  Stenocactus multicostatus (Hildm.) A. Berger -- accepted
  Stenocactus obvallatus (DC.) A. Berger -- accepted
  Stenocactus ochoterenaus Tiegel -- not accepted
  Stenocactus pentacanthus A. Berger -- not accepted
  Stenocactus phyllacanthus (A. Dietr. & Otto) A. Berger -- accepted
  Stenocactus sulphureus (A. Dietr.) Bravo -- accepted
  Stenocactus vaupelianus (Werderm.) F.M. Knuth -- accepted
  Stenocactus zacatecasensis A. Berger -- not accepted
  Stenocereus (A. Berger) Riccob. -- accepted
  Stenocereus alamosensis (J.M. Coult.) A.C. Gibson & K.E. Horak -- accepted
  Stenocereus aragonii (F.A.C. Weber) Buxb. -- accepted
  Stenocereus beneckei (Ehrenb.) A. Berger & Buxb. -- accepted
  Stenocereus chacalapensis (Bravo & T. MacDoug.) Buxb. -- accepted
  Stenocereus chrysocarpus Sánchez-Mej. -- accepted
  Stenocereus deficiens (Otto & A. Dietr.) Buxb. -- not accepted
  Stenocereus dumortieri (Scheidw.) Buxb. -- accepted
  Stenocereus eichlamii (Britton & Rose) Buxb. -- accepted
  Stenocereus eruca (Brandegee) A.C. Gibson & K.E. Horak -- accepted
  Stenocereus fimbriatus (Lam.) Lourteig -- accepted -- Spanish stenocereus
  Stenocereus fricii Sánchez-Mej. -- accepted
  Stenocereus griseus (Haw.) Buxb. -- accepted
  Stenocereus gummosus (Engelm.) A.C. Gibson & K.E. Horak -- accepted
  Stenocereus humilis (Britton & Rose) D.R. Hunt -- accepted
  Stenocereus hystrix (Haw.) Buxb. -- not accepted -- Spanish stenocereus
  Stenocereus kerberi (K. Schum.) A.C. Gibson & K.E. Horak -- accepted
  Stenocereus laevigatus (Salm-Dyck) Buxb. -- not accepted
  Stenocereus littoralis (K. Brandegee) L.W. Lenz -- not accepted
  Stenocereus longispinus (Britton & Rose) Buxb. -- not accepted
  Stenocereus marginatus (DC.) A. Berger & Buxb. -- not accepted
  Stenocereus martinezii (J.G. Ortega) Buxb. -- accepted
  Stenocereus montanus (Britton & Rose) Buxb. -- accepted
  Stenocereus peruvianus (L.) R. Kiesling -- not accepted
  Stenocereus pruinosus (Otto ex Pfeiff.) Buxb. -- accepted
  Stenocereus queretaroensis (F.A.C. Weber) Buxb. -- accepted
  Stenocereus quevedonis (J.G. Ortega) Buxb. -- accepted
  Stenocereus standleyi (J.G. Ortega) Buxb. -- accepted
  Stenocereus stellatus (Pfeiff.) Riccob. -- accepted
  Stenocereus thurberi (Engelm.) Buxb. -- accepted -- organpipe cactus, Pitayo dulce
  Stenocereus thurberi ssp. littoralis (K. Brandegee) N.P. Taylor -- accepted
  Stenocereus thurberi ssp. thurberi (Engelm.) Buxb. -- accepted
  Stenocereus treleasei (Rose) Backeb. -- accepted
  Stenocereus weberi (J.M. Coult.) Buxb. -- not accepted
  Stephanocereus A. Berger -- accepted
  Stephanocereus leucostele (Gürke) A. Berger -- accepted
  Stephanocereus luetzelburgii (Vaupel) N.P. Taylor & Eggli -- accepted
  Stetsonia Britton & Rose -- accepted
  Stetsonia coryne (Salm-Dyck) Britton & Rose -- accepted
  Strombocactus Britton & Rose -- accepted
  Strombocactus denegrii (Fric) G.D. Rowley -- not accepted
  Strombocactus disciformis (DC.) Britton & Rose -- accepted
  Strombocactus disciformis ssp. disciformis (DC.) Britton & Rose -- accepted
  Strombocactus disciformis ssp. esperanzae Glass & S. Arias -- accepted
  Strombocactus jarmilae Halda -- not accepted
  Strombocactus klinkerianus (Backeb. & H. Jacobsen) Buining & Brederoo -- not accepted
  Strombocactus lophophoroides (Werderm.) F.M. Knuth -- not accepted
  Strombocactus pseudomacrochele Backeb. -- not accepted
  Strombocactus pseudomacrochele var. krainzianus (Gerhart Frank) G.D. Rowley -- not accepted
  Strombocactus schmiedickeanus (Boed.) J. West -- not accepted
  Strombocactus schmiedickeanus var. klinkerianus (Backeb. & H. Jacobsen) G.D. Rowley -- not accepted
  Strombocactus schwarzii Shurly -- not accepted
  Strophocactus Britton & Rose -- accepted
  Strophocactus chontalensis (Alexander) Ralf Bauer -- accepted
  Strophocactus testudo (Karw. ex Zucc.) Ralf Bauer -- accepted
  Strophocactus wittii (K. Schum.) Britton & Rose -- accepted
  Submatucana Backeb. -- not accepted
  Submatucana aurantiaca (Vaupel) Backeb. -- not accepted
  Submatucana calvescens (Kimnach & Hutchison) Backeb. -- not accepted
  Submatucana formosa (F. Ritter) Backeb. -- not accepted
  Submatucana intertexta (F. Ritter) Backeb. -- not accepted
  Submatucana madisoniorum (Hutchison) Backeb. -- not accepted
  Submatucana myriacantha (Vaupel) Backeb. -- not accepted
  Submatucana paucicostata (F. Ritter) Backeb. -- not accepted
  Submatucana ritteri (Buining) Backeb. -- not accepted
  Subpilocereus Backeb. -- not accepted
  Subpilocereus atroviridis (Backeb.) Backeb. -- not accepted
  Subpilocereus grenadensis (Britton & Rose) Backeb. -- not accepted
  Subpilocereus horrispinus (Backeb.) Backeb. -- not accepted
  Subpilocereus mortensenii (Croizat) Trujillo & Marisela Ponce -- not accepted
  Subpilocereus remolinensis (Backeb.) Backeb. -- not accepted
  Subpilocereus repandus (L.) Backeb. -- not accepted
  Subpilocereus repandus ssp. micracanthus (Hummelinck) Trujillo & Marisela Ponce -- not accepted
  Subpilocereus russelianus (Rümpler) Backeb. -- not accepted
  Sulcorebutia Backeb. -- not accepted
  Sulcorebutia alba Rausch -- not accepted
  Sulcorebutia arenacea (Cárdenas) F. Ritter -- not accepted
  Sulcorebutia augustinii Hentzschel -- not accepted
  Sulcorebutia breviflora Backeb. -- not accepted
  Sulcorebutia caineana (Cárdenas) Donald -- not accepted
  Sulcorebutia candiae (Cárdenas) Buining & Donald -- not accepted
  Sulcorebutia canigueralii (Cárdenas) Buining & Donald -- not accepted
  Sulcorebutia caracarensis (Cárdenas) Donald -- not accepted
  Sulcorebutia cardenasiana R. Vásquez -- not accepted
  Sulcorebutia chilensis (Backeb.) F.H. Brandt -- not accepted
  Sulcorebutia cintiensis (Cárdenas) F.H. Brandt -- not accepted
  Sulcorebutia cochabambina Rausch -- not accepted
  Sulcorebutia corroana (Cárdenas) Brederoo & Donald -- not accepted
  Sulcorebutia crispata Rausch -- not accepted
  Sulcorebutia cylindrica Donald & A.B. Lau -- not accepted
  Sulcorebutia dorana Gertel -- not accepted
  Sulcorebutia erinacea (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia fidaiana (Backeb.) F.H. Brandt -- not accepted
  Sulcorebutia fischeriana K. Augustin -- not accepted
  Sulcorebutia flavissima Rausch -- not accepted
  Sulcorebutia frankiana Rausch -- not accepted
  Sulcorebutia gerosenilis Ríha & Arandia -- not accepted
  Sulcorebutia glomeriseta (Cárdenas) F. Ritter -- not accepted
  Sulcorebutia glomerispina (Cárdenas) Buining & Donald -- not accepted
  Sulcorebutia haseltonii (Cárdenas) Donald -- not accepted
  Sulcorebutia hediniana (Backeb.) F.H. Brandt -- not accepted
  Sulcorebutia hertusii (Halda & Horácek) Halda & Horácek -- not accepted
  Sulcorebutia hertusii ssp. aureicapillata (Halda & Horácek) Halda, Hertus & Horácek -- not accepted
  Sulcorebutia hoffmanniana (Backeb.) Backeb. -- not accepted
  Sulcorebutia inflexiseta (Cárdenas) Donald -- not accepted
  Sulcorebutia krahnii Rausch -- not accepted
  Sulcorebutia krugerae (Cárdenas) F. Ritter -- not accepted
  Sulcorebutia lanata (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia langeri K. Augustin & Hentzschel -- not accepted
  Sulcorebutia lecoriensis (Cárdenas) F.H. Brandt -- not accepted
  Sulcorebutia lepida F. Ritter -- not accepted
  Sulcorebutia longigibba (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia losenickyana Rausch -- not accepted
  Sulcorebutia mariana Swoboda -- not accepted
  Sulcorebutia markusii Rausch -- not accepted
  Sulcorebutia markusii ssp. tintiniensis Gertel -- not accepted
  Sulcorebutia menesesii (Cárdenas) Buining & Donald -- not accepted
  Sulcorebutia menesesii var. kamiensis Brederoo & Donald -- not accepted
  Sulcorebutia menesesii var. muschii (R. Vásquez) Buining & Donald -- not accepted
  Sulcorebutia mentosa F. Ritter -- not accepted
  Sulcorebutia mentosa ssp. flavissima (Rausch) Sída -- not accepted
  Sulcorebutia mizquensis Rausch -- not accepted
  Sulcorebutia multispina (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia muschii R. Vásquez -- not accepted
  Sulcorebutia neocorroana F.H. Brandt -- not accepted
  Sulcorebutia neocumingii (Backeb.) F.H. Brandt -- not accepted
  Sulcorebutia neumanniana (Backeb.) F.H. Brandt -- not accepted
  Sulcorebutia pampagrandensis Rausch -- not accepted
  Sulcorebutia pasopayana (F.H. Brandt) Gertel -- not accepted
  Sulcorebutia pilcomayensis (Cárdenas) F.H. Brandt -- not accepted
  Sulcorebutia platygona (Cárdenas) F.H. Brandt -- not accepted
  Sulcorebutia polymorpha (Cárdenas) Backeb. -- not accepted
  Sulcorebutia pulquinensis (Cárdenas) F.H. Brandt -- not accepted
  Sulcorebutia purpurea (Donald & A.B. Lau) Brederoo & Donald -- not accepted
  Sulcorebutia rauschii Gerhart Frank -- not accepted
  Sulcorebutia riograndensis (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia ritteri (F.H. Brandt) F. Ritter -- not accepted
  Sulcorebutia santiaginiensis Rausch -- not accepted
  Sulcorebutia steinbachii (Werderm.) Backeb. -- not accepted
  Sulcorebutia steinbachii ssp. krugerae (Cárdenas) Fritz, Gertel & J. de Vries -- not accepted
  Sulcorebutia steinbachii var. australis Rausch -- not accepted
  Sulcorebutia sucrensis (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia swobodae K. Augustin -- not accepted
  Sulcorebutia taratensis (Cárdenas) Buining & Donald -- not accepted
  Sulcorebutia tarijensis F. Ritter -- not accepted
  Sulcorebutia tiraquensis (Cárdenas) F. Ritter -- not accepted
  Sulcorebutia toroterensis (Cárdenas) F.H. Brandt -- not accepted
  Sulcorebutia toroterensis (Cárdenas) Brederoo & Donald -- not accepted
  Sulcorebutia tuberculato-chrysantha (Cárdenas) Brederoo & Donald -- not accepted
  Sulcorebutia tunariensis (Cárdenas) Buining & Donald -- not accepted
  Sulcorebutia unguispina Rausch -- not accepted
  Sulcorebutia vasqueziana Rausch -- not accepted
  Sulcorebutia verticillacantha F. Ritter -- not accepted
  Sulcorebutia vilcayensis (Cárdenas) F.H. Brandt -- not accepted
  Sulcorebutia vizcarrae (Cárdenas) Donald -- not accepted
  Sulcorebutia vorwerkii (Fric) F.H. Brandt -- not accepted
  Sulcorebutia westii (Hutchison) F.H. Brandt -- not accepted
  Sulcorebutia xanthoantha Backeb. -- not accepted
  Sulcorebutia zavaletae (Cárdenas) Backeb. -- not accepted
  Tacinga Britton & Rose -- accepted
  Tacinga atropurpurea Werderm. -- not accepted
  Tacinga braunii Esteves -- accepted
  Tacinga funalis Britton & Rose -- accepted
  Tacinga funalis ssp. atropurpurea (Werderm.) P.J. Braun & Esteves -- not accepted
  Tacinga inamoena (K. Schum.) N.P. Taylor & Stuppy -- accepted
  Tacinga inamoena ssp. inamoena (K. Schum.) N.P. Taylor & Stuppy -- accepted
  Tacinga inamoena ssp. subcylindrica M. Machado & N.P. Taylor -- accepted
  Tacinga palmadora (Britton & Rose) N.P. Taylor & Stuppy -- accepted
  Tacinga saxatilis (F. Ritter) N.P. Taylor & Stuppy -- accepted
  Tacinga saxatilis ssp. estevesii (P.J. Braun) N.P. Taylor & Stuppy -- accepted
  Tacinga saxatilis ssp. saxatilis (F. Ritter) N.P. Taylor & Stuppy -- accepted
  Tacinga werneri (Eggli) N.P. Taylor & Stuppy -- accepted
  Tephrocactus Lem. -- accepted
  Tephrocactus albiscoparius Backeb. -- not accepted
  Tephrocactus alboareolatus Backeb. -- not accepted
  Tephrocactus alexanderi (Britton & Rose) Backeb. -- accepted
  Tephrocactus aoracanthus (Lem.) Lem. -- accepted
  Tephrocactus articulatus (Otto) Backeb. -- accepted
  Tephrocactus asplundii Backeb. -- not accepted
  Tephrocactus atacamensis (Phil.) Backeb. -- not accepted
  Tephrocactus atroglobosus Backeb. -- not accepted
  Tephrocactus atroviridis (Werderm. & Backeb.) Backeb. -- not accepted
  Tephrocactus blancii Backeb. -- not accepted
  Tephrocactus bolivianus (Salm-Dyck) Backeb. -- not accepted
  Tephrocactus bonnieae (D.J. Ferguson & R. Kiesling) Stuppy -- accepted
  Tephrocactus camachoi (Espinosa) Backeb. -- not accepted
  Tephrocactus chichensis Cárdenas -- not accepted
  Tephrocactus coloreus F. Ritter -- not accepted
  Tephrocactus conoideus F. Ritter -- not accepted
  Tephrocactus corotilla (K. Schum.) Backeb. -- not accepted
  Tephrocactus crassicylindricus Rauh & Backeb. -- not accepted
  Tephrocactus crispicrinitus Rauh & Backeb. -- not accepted
  Tephrocactus cylindrolanatus Rauh & Backeb. -- not accepted
  Tephrocactus dactyliferus (Vaupel) Backeb. -- not accepted
  Tephrocactus dimorphus (C.F. Först.) Backeb. -- not accepted
  Tephrocactus echinaceus F. Ritter -- not accepted
  Tephrocactus ferocior Backeb. -- not accepted
  Tephrocactus flexuosus Backeb. -- not accepted
  Tephrocactus floccosus (Salm-Dyck) Backeb. -- not accepted
  Tephrocactus fulvicomus Rauh & Backeb. -- not accepted
  Tephrocactus geometricus (A. Cast.) Backeb. -- not accepted
  Tephrocactus glomeratus (Haw.) Speg. -- not accepted
  Tephrocactus heteromorphus (Phil.) Backeb. -- not accepted
  Tephrocactus hickenii (Britton & Rose) Speg. -- not accepted
  Tephrocactus hirschii Backeb. -- not accepted
  Tephrocactus ignescens (Vaupel) Backeb. -- not accepted
  Tephrocactus kuehnrichianus (Werderm. & Backeb.) Backeb. -- not accepted
  Tephrocactus lagopus (K. Schum.) Backeb. -- not accepted
  Tephrocactus malyanus Rausch -- not accepted
  Tephrocactus mandragora Backeb. -- not accepted
  Tephrocactus melanacanthus Backeb. -- not accepted
  Tephrocactus microclados Backeb. -- not accepted
  Tephrocactus microsphaericus Backeb. -- not accepted
  Tephrocactus minusculus Backeb. -- not accepted
  Tephrocactus minutus Backeb. -- not accepted
  Tephrocactus mirus Rauh & Backeb. -- not accepted
  Tephrocactus mistiensis Backeb. -- not accepted
  Tephrocactus molinensis (Speg.) Backeb. -- accepted
  Tephrocactus muellerianus Backeb. -- not accepted
  Tephrocactus multiareolatus F. Ritter -- not accepted
  Tephrocactus neuquensis (Borg) Backeb. -- not accepted
  Tephrocactus nigrispinus (K. Schum.) Backeb. -- accepted
  Tephrocactus noodtiae Backeb. & H. Jacobsen -- not accepted
  Tephrocactus ovatus (Pfeiff.) Backeb. -- not accepted
  Tephrocactus pentlandii (Salm-Dyck) Backeb. -- not accepted
  Tephrocactus pseudoudonis Rauh & Backeb. -- not accepted
  Tephrocactus punta-caillan Rauh & Backeb. -- not accepted
  Tephrocactus pyrrhacanthus (K. Schum.) Backeb. -- not accepted
  Tephrocactus rarissimus Backeb. -- not accepted
  Tephrocactus rauhii Backeb. -- not accepted
  Tephrocactus reicheanus (Espinosa) Backeb. -- not accepted
  Tephrocactus russellii (Britton & Rose) Backeb. -- not accepted
  Tephrocactus silvestris Backeb. -- not accepted
  Tephrocactus sphaericus (C.F. Först.) Backeb. -- not accepted
  Tephrocactus subinermis Backeb. -- not accepted
  Tephrocactus subterraneus (R.E. Fr.) Backeb. -- not accepted
  Tephrocactus tarapacanus (Phil.) Backeb. -- not accepted
  Tephrocactus udonis (Weing.) Backeb. -- not accepted
  Tephrocactus variiflorus Backeb. -- not accepted
  Tephrocactus verticosus (Weing.) Backeb. -- not accepted
  Tephrocactus weberi (Speg.) Backeb. -- accepted
  Tephrocactus wilkeanus Backeb. -- not accepted
  Tephrocactus yanganucensis Rauh & Backeb. -- not accepted
  Tephrocactus zehnderi Rauh & Backeb. -- not accepted
  Thelocactus (K. Schum.) Britton & Rose -- accepted
  Thelocactus aguirreanus (Glass & R.A. Foster) Bravo -- not accepted
  Thelocactus bicolor (Galeotti ex Pfeiff.) Britton & Rose -- accepted -- glory of Texas, Biznaga-pezón bicolor
  Thelocactus bicolor ssp. bicolor (Galeotti ex Pfeiff.) Britton & Rose -- accepted
  Thelocactus bicolor ssp. bolaensis (Runge) Doweld -- accepted
  Thelocactus bicolor ssp. flavidispinus (Backeb.) N.P. Taylor -- accepted
  Thelocactus bicolor ssp. heterochromus (F.A.C. Weber) Mosco & Zanov. -- accepted
  Thelocactus bicolor ssp. schwarzii (Backeb.) N.P. Taylor -- accepted
  Thelocactus bicolor var. schottii (Engelm.) Krainz -- not accepted
  Thelocactus buekii (Klein bis) Britton & Rose -- accepted
  Thelocactus conothelos (Regel & Klein bis) F.M. Knuth -- accepted
  Thelocactus conothelos ssp. argenteus (Glass & R.A. Foster) Glass -- accepted
  Thelocactus conothelos ssp. aurantiacus (Glass & R.A. Foster) Glass -- accepted
  Thelocactus conothelos ssp. conothelos (Regel & Klein bis) F.M. Knuth -- accepted
  Thelocactus conothelos ssp. garciae (Glass & Mend.-Garc.) Mosco & Zanov. -- accepted
  Thelocactus durangensis (Runge) W.T. Marshall -- not accepted
  Thelocactus hastifer (Werderm. & Boed.) F.M. Knuth -- accepted
  Thelocactus hexaedrophorus (Lem.) Britton & Rose -- accepted
  Thelocactus hexaedrophorus ssp. hexaedrophorus (Lem.) Britton & Rose -- accepted
  Thelocactus hexaedrophorus ssp. lloydii (Britton & Rose) N.P. Taylor -- accepted
  Thelocactus lausseri Ríha & Busek -- accepted
  Thelocactus leucacanthus (Zucc. ex Pfeiff.) Britton & Rose -- accepted
  Thelocactus macdowellii (Rebut ex Quehl) W.T. Marshall -- accepted
  Thelocactus multicephalus Halda & Panar. -- accepted
  Thelocactus rinconensis (Poselger) Britton & Rose -- accepted
  Thelocactus roseanus (Boed.) Borg -- not accepted
  Thelocactus setispinus (Engelm.) E.F. Anderson -- accepted -- miniature barrel cactus, Biznaga-pezón setosa, fishhook cactus
  Thelocactus tulensis (Polseg.) Britton & Rose -- accepted
  Thelocactus unguispinus (Engelm.) W.T. Marshall -- not accepted
  Thelocephala Y. Itô -- not accepted
  Thelocephala aerocarpa (F. Ritter) F. Ritter -- not accepted
  Thelocephala duripulpa (F. Ritter) F. Ritter -- not accepted
  Thelocephala esmeraldana (F. Ritter) F. Ritter -- not accepted
  Thelocephala fankhauseri F. Ritter -- not accepted
  Thelocephala fulva (F. Ritter) F. Ritter -- not accepted
  Thelocephala glabrescens (F. Ritter) F. Ritter -- not accepted
  Thelocephala krausii (F. Ritter) F. Ritter -- not accepted
  Thelocephala kraussii (F. Ritter) F. Ritter -- not accepted
  Thelocephala lembckei (Backeb.) F. Ritter -- not accepted
  Thelocephala longirapa F. Ritter -- not accepted
  Thelocephala malleolata (F. Ritter) F. Ritter -- not accepted
  Thelocephala napina (Phil.) Y. Itô -- not accepted
  Thelocephala nuda F. Ritter -- not accepted
  Thelocephala odieri (Lem. ex Salm-Dyck) F. Ritter -- not accepted
  Thelocephala reichei (K. Schum.) F. Ritter -- not accepted
  Thelocephala tenebrica F. Ritter -- not accepted
  Thrixanthocereus Backeb. -- not accepted
  Thrixanthocereus blossfeldiorum (Werderm.) Backeb. -- not accepted
  Thrixanthocereus longispinus F. Ritter -- not accepted
  Thrixanthocereus senilis F. Ritter -- not accepted
  Toumeya Britton & Rose -- not accepted
  Toumeya bradyi (L.D. Benson) W.H. Earle -- not accepted
  Toumeya fickeisenii (Backeb.) W.H. Earle -- not accepted
  Toumeya klinkeriana (Backeb. & H. Jacobsen) Bravo & W.T. Marshall -- not accepted
  Toumeya krainziana Gerhart Frank -- not accepted
  Toumeya lophophoroides (Werderm.) W.T. Marshall -- not accepted
  Toumeya macrochele var. schwarzii (Shurly) Kladiwa -- not accepted
  Toumeya papyracantha (Engelm.) Britton & Rose -- not accepted
  Toumeya peeblesiana (Croizat) W.T. Marshall -- not accepted
  Toumeya pseudomacrochele (Backeb.) W.T. Marshall -- not accepted
  Toumeya pseudomacrochele var. krainziana (Gerhart Frank) Kladiwa -- not accepted
  Toumeya schmiedickeana (Boed.) W.T. Marshall -- not accepted
  Toumeya schmiedickeana var. klinkeriana (Backeb. & H. Jacobsen) Krainz -- not accepted
  Toumeya schwarzii (Shurly) Bravo & W.T. Marshall -- not accepted
  Trichocereus (A. Berger) Riccob. -- not accepted
  Trichocereus angelesii R. Kiesling -- not accepted
  Trichocereus antezanae Cárdenas -- not accepted
  Trichocereus arboricola Kimnach -- not accepted
  Trichocereus bertramianus Backeb. -- not accepted
  Trichocereus bridgesii (Salm-Dyck) Britton & Rose -- not accepted
  Trichocereus bruchii (Britton & Rose) F. Ritter -- not accepted
  Trichocereus camarguensis Cárdenas -- not accepted
  Trichocereus candicans (Gillies ex Salm-Dyck) Britton & Rose -- not accepted
  Trichocereus catamarcensis F. Ritter -- not accepted
  Trichocereus caulescens F. Ritter -- not accepted
  Trichocereus cephalomacrostibas Backeb. -- not accepted
  Trichocereus chalaensis Rauh & Backeb. -- not accepted
  Trichocereus chiloensis (Colla) Britton & Rose -- not accepted
  Trichocereus clavatus F. Ritter -- not accepted
  Trichocereus conaconensis Cárdenas -- not accepted
  Trichocereus coquimbanus (Molina) Britton & Rose -- not accepted
  Trichocereus courantii (K. Schum.) Backeb. -- not accepted
  Trichocereus cuzcoensis Britton & Rose -- not accepted
  Trichocereus deserticola (Werderm.) Looser -- not accepted
  Trichocereus eremophilus F. Ritter -- not accepted
  Trichocereus escayachensis Cárdenas -- not accepted
  Trichocereus fabrisii R. Kiesling -- not accepted
  Trichocereus formosus (Pfeiff.) F. Ritter -- not accepted
  Trichocereus grandiflorus Backeb. -- not accepted
  Trichocereus grandis (Britton & Rose) F. Ritter -- not accepted
  Trichocereus huascha (F.A.C. Weber) Britton & Rose -- not accepted
  Trichocereus ingens (Backeb.) F. Ritter -- not accepted
  Trichocereus knuthianus Backeb. -- not accepted
  Trichocereus korethroides (Werderm.) F. Ritter -- not accepted
  Trichocereus korethroides (Werderm.) H.P. Kelsey & Dayton -- not accepted
  Trichocereus litoralis (Johow) Looser -- not accepted
  Trichocereus manguinii Backeb. -- not accepted
  Trichocereus narvaecensis Cárdenas -- not accepted
  Trichocereus neolamprochlorus Backeb. -- not accepted
  Trichocereus orurensis Cárdenas -- not accepted
  Trichocereus pachanoi Britton & Rose -- not accepted
  Trichocereus pasacana (F.A.C. Weber ex Rümpler) Britton & Rose -- not accepted
  Trichocereus peruvianus Britton & Rose -- not accepted
  Trichocereus poco Backeb. -- not accepted
  Trichocereus pseudocandicans R. Kiesling -- not accepted
  Trichocereus puquiensis Rauh & Backeb. -- not accepted
  Trichocereus quadratiumbonatus F. Ritter -- not accepted
  Trichocereus randallii Cárdenas -- not accepted
  Trichocereus rivierei (Backeb.) Krainz -- not accepted
  Trichocereus rowleyi (H. Friedrich) R. Kiesling -- not accepted
  Trichocereus rubinghianus Backeb. -- not accepted
  Trichocereus santaensis (Speg.) Backeb. -- not accepted
  Trichocereus schickendantzii (F.A.C. Weber) Britton & Rose -- not accepted
  Trichocereus schoenii Rauh & Backeb. -- not accepted
  Trichocereus scopulicola F. Ritter -- not accepted
  Trichocereus shaferi Britton & Rose -- not accepted
  Trichocereus skottsbergii Backeb. ex Skottsb. -- not accepted
  Trichocereus smrzianus (Backeb.) Backeb. -- not accepted
  Trichocereus smrzianus (Backeb.) F. Ritter -- not accepted
  Trichocereus strigosus (Salm-Dyck) Britton & Rose -- not accepted
  Trichocereus tacnaensis F. Ritter -- not accepted
  Trichocereus taquimbalensis Cárdenas -- not accepted
  Trichocereus taratensis Cárdenas -- not accepted
  Trichocereus tarijensis (Vaupel) Werderm. -- not accepted
  Trichocereus tarmaensis Rauh & Backeb. -- not accepted
  Trichocereus tenuispinus F. Ritter -- not accepted
  Trichocereus terscheckii (J. Parm. ex Pfeiff.) Britton & Rose -- not accepted
  Trichocereus thelegonoides (Speg.) Britton & Rose -- not accepted
  Trichocereus thelegonus (F.A.C. Weber) Britton & Rose -- not accepted
  Trichocereus torataensis F. Ritter -- not accepted
  Trichocereus totorensis (Cárdenas) F. Ritter -- not accepted
  Trichocereus tulhuayacensis Ochoa -- not accepted
  Trichocereus tunariensis Cárdenas -- not accepted
  Trichocereus uyupampensis Backeb. -- not accepted
  Trichocereus vasquezii Rausch -- not accepted
  Trichocereus vatteri R. Kiesling -- not accepted
  Trichocereus volcanensis F. Ritter -- not accepted
  Trichocereus vollianus Backeb. -- not accepted
  Trichocereus werdermannianus Backeb. -- not accepted
  Tunilla D.R. Hunt & Iliff -- accepted
  Tunilla albisaetacens (Backeb.) D.R. Hunt & Iliff -- not accepted
  Tunilla chilensis (F. Ritter) D.R. Hunt & Iliff -- not accepted
  Tunilla corrugata (Salm-Dyck) D.R. Hunt & Iliff -- accepted
  Tunilla erectoclada (Backeb.) D.R. Hunt & Iliff -- accepted
  Tunilla ianthinantha (F. Ritter) D.R. Hunt & Iliff -- not accepted
  Tunilla microdisca (F.A.C. Weber) D.R. Hunt & Iliff -- accepted
  Tunilla minuscula (Backeb.) D.R. Hunt & Iliff -- not accepted
  Tunilla orurensis (Cárdenas) D.R. Hunt & Iliff -- not accepted
  Tunilla picardoi D.R. Hunt & Iliff -- not accepted
  Tunilla silvestris (Backeb.) D.R. Hunt & Iliff -- not accepted
  Tunilla soehrensii (Britton & Rose) D.R. Hunt & Iliff -- accepted
  Turbinicarpus (Backeb.) Buxb. & Backeb. -- accepted -- top cactus
  Turbinicarpus alonsoi Glass & S. Arias -- accepted
  Turbinicarpus beguinii (N.P. Taylor) Mosco & Zanov. -- accepted
  Turbinicarpus beguinii ssp. beguinii (N.P. Taylor) Mosco & Zanov. -- accepted
  Turbinicarpus beguinii ssp. hintoniorum A. Hofer -- accepted
  Turbinicarpus beguinii ssp. zaragosae (Glass & R.A. Foster) D.R. Hunt -- accepted
  Turbinicarpus bonatzii G. Frank -- not accepted
  Turbinicarpus booleanus G.S. Hinton -- not accepted
  Turbinicarpus flaviflorus Gerhart Frank & A.B. Lau -- not accepted
  Turbinicarpus gautii (L.D. Benson) A.D. Zimmerman -- not accepted -- top cactus, Biznaga-cono invertido plateada
  Turbinicarpus gracilis Glass & R.A. Foster -- not accepted
  Turbinicarpus hoferi Lüthy & A.B. Lau -- accepted
  Turbinicarpus horripilus (Lem.) V. John & Ríha -- accepted
  Turbinicarpus jauernigii G. Frank -- not accepted
  Turbinicarpus klinkerianus Backeb. & H. Jacobsen -- not accepted
  Turbinicarpus knuthianus (Boed.) V. John & Ríha -- not accepted
  Turbinicarpus krainzianus (Gerhart Frank) Backeb. -- not accepted
  Turbinicarpus laui Glass & R.A. Foster -- accepted
  Turbinicarpus lophophoroides (Werderm.) Buxb. & Backeb. -- accepted
  Turbinicarpus macrochele (Werderm.) Rauh & Backeb. -- not accepted
  Turbinicarpus macrochele ssp. andersonii (Mosco) Doweld -- not accepted
  Turbinicarpus macrochele ssp. flaviflorus (Gerhart Frank & A.B. Lau) Doweld -- not accepted
  Turbinicarpus macrochele ssp. klinkerianus (Backeb. & H. Jacobsen) Doweld -- not accepted
  Turbinicarpus macrochele ssp. schwarzii (Shurly) Doweld -- not accepted
  Turbinicarpus mandragora (A. Berger) A.D. Zimmerman -- accepted
  Turbinicarpus mandragora ssp. mandragora (A. Berger) Lüthy -- accepted
  Turbinicarpus mandragora ssp. pailanus (Halda & Panar.) Lüthy -- accepted
  Turbinicarpus pseudomacrochele (Backeb.) Rauh & Backeb. -- accepted
  Turbinicarpus pseudomacrochele ssp. krainzianus (Gerhart Frank) Glass -- accepted
  Turbinicarpus pseudomacrochele ssp. lausseri (Diers & Gerhart Frank) Glass -- accepted
  Turbinicarpus pseudomacrochele ssp. minimus (Gerhart Frank) Lüthy & A. Hofer -- accepted
  Turbinicarpus pseudomacrochele ssp. pseudomacrochele (Backeb.) Rauh & Backeb. -- accepted
  Turbinicarpus pseudopectinatus (Backeb.) Glass & R.A. Foster -- accepted
  Turbinicarpus rioverdensis G. Frank -- not accepted
  Turbinicarpus saueri (Boed.) V. John & Ríha -- accepted
  Turbinicarpus saueri ssp. knuthianus (Boed.) Lüthy -- accepted
  Turbinicarpus saueri ssp. nelissae Halda & Panar. -- accepted
  Turbinicarpus saueri ssp. saueri (Boed.) Lüthy -- accepted
  Turbinicarpus schmiedickeanus (Boed.) Rauh & Backeb. -- accepted
  Turbinicarpus schmiedickeanus ssp. andersonii Mosco -- accepted
  Turbinicarpus schmiedickeanus ssp. bonatzii (G. Frank) Panar. -- accepted
  Turbinicarpus schmiedickeanus ssp. dickisoniae (Glass & R.A. Foster) N.P. Taylor -- accepted
  Turbinicarpus schmiedickeanus ssp. flaviflorus (Gerhart Frank & A.B. Lau) Glass -- accepted
  Turbinicarpus schmiedickeanus ssp. gracilis (Glass & R.A. Foster) Glass -- accepted
  Turbinicarpus schmiedickeanus ssp. jauernigii (G. Frank) D.R. Hunt -- accepted
  Turbinicarpus schmiedickeanus ssp. klinkerianus (Backeb. & H. Jacobsen) N.P. Taylor -- accepted
  Turbinicarpus schmiedickeanus ssp. macrochele (Werderm.) N.P. Taylor -- accepted
  Turbinicarpus schmiedickeanus ssp. rioverdensis (G. Frank) Lüthy -- accepted
  Turbinicarpus schmiedickeanus ssp. rubriflorus (Gerhart Frank) Panar. -- accepted
  Turbinicarpus schmiedickeanus ssp. schmiedickeanus (Boed.) Rauh & Backeb. -- accepted
  Turbinicarpus schmiedickeanus ssp. schwarzii (Shurly) N.P. Taylor -- accepted
  Turbinicarpus schmiedickeanus var. panarottoi Ríha -- not accepted
  Turbinicarpus schwarzii (Shurly) Backeb. -- not accepted
  Turbinicarpus subterraneus (Backeb.) A.D. Zimmerman -- accepted
  Turbinicarpus subterraneus ssp. booleanus (G.S. Hinton) D.R. Hunt -- accepted
  Turbinicarpus subterraneus ssp. subterraneus (Backeb.) A.D. Zimmerman -- accepted
  Turbinicarpus subterraneus ssp. zaragosae (Glass & R.A. Foster) Zachar -- not accepted
  Turbinicarpus swobodae Diers -- accepted
  Turbinicarpus valdezianus (H. Moeller) Glass & R.A. Foster -- accepted
  Turbinicarpus viereckii (Werderm.) V. John & Ríha -- accepted
  Turbinicarpus zaragosae (Glass & R.A. Foster) Glass & A. Hofer ex Glass -- not accepted
  Uebelmannia Buining -- accepted
  Uebelmannia buiningii Donald -- accepted
  Uebelmannia flavispina Buining & Brederoo -- not accepted
  Uebelmannia gummifera (Backeb. & Voll) Buining & Brederoo -- accepted
  Uebelmannia gummifera ssp. gummifera (Backeb. & Voll) Buining & Brederoo -- accepted
  Uebelmannia gummifera ssp. meninensis (Buining) P.J. Braun & Esteves -- accepted
  Uebelmannia meninensis Buining -- not accepted
  Uebelmannia pectinifera Buining -- accepted
  Uebelmannia pectinifera ssp. flavispina (Buining & Brederoo) P.J. Braun & Esteves -- accepted
  Uebelmannia pectinifera ssp. horrida (P.J. Braun) P.J. Braun & Esteves -- accepted
  Uebelmannia pectinifera ssp. pectinifera Buining -- accepted
  Utahia Britton & Rose -- not accepted
  Utahia peeblesiana (Croizat) Kladiwa -- not accepted
  Utahia sileri (Engelm. ex J.M. Coult.) Britton & Rose -- not accepted
  Weberbauerocereus Backeb. -- accepted
  Weberbauerocereus albus F. Ritter -- accepted
  Weberbauerocereus cephalomacrostibas (Werderm. & Backeb.) F. Ritter -- accepted
  Weberbauerocereus churinensis F. Ritter -- accepted
  Weberbauerocereus cuzcoensis Kníze -- accepted
  Weberbauerocereus horridispinus Rauh & Backeb. -- not accepted
  Weberbauerocereus rauhii Backeb. -- accepted
  Weberbauerocereus seyboldianus Rauh & Backeb. -- not accepted
  Weberbauerocereus torataensis F. Ritter -- not accepted
  Weberbauerocereus weberbaueri (K. Schum.) Backeb. -- accepted
  Weberbauerocereus winterianus F. Ritter -- accepted
  Weberocereus Britton & Rose -- accepted
  Weberocereus biolleyi (F.A.C. Weber) Britton & Rose -- not accepted
  Weberocereus bradei (Britton & Rose) G.D. Rowley -- accepted
  Weberocereus frohningiorum Ralf Bauer -- accepted
  Weberocereus glaber (Eichlam) G.D. Rowley -- accepted
  Weberocereus glaber ssp. glaber (Eichlam) G.D. Rowley -- accepted
  Weberocereus glaber ssp. mirandae (Bravo) Doweld -- accepted
  Weberocereus imitans (Kimnach & Hutchison) Buxb. -- accepted
  Weberocereus panamensis Britton & Rose -- not accepted
  Weberocereus rosei (Kimnach) Buxb. -- accepted
  Weberocereus tonduzii (F.A.C. Weber) G.D. Rowley -- accepted
  Weberocereus trichophorus H. Johnson & Kimnach -- accepted
  Weberocereus tunilla (F.A.C. Weber) Britton & Rose -- accepted
  Weberocereus tunilla ssp. biolleyi (F.A.C. Weber) Ralf Bauer -- accepted
  Weberocereus tunilla ssp. tunilla (F.A.C. Weber) Ralf Bauer -- accepted
  Weingartia Werderm. -- not accepted
  Weingartia alba (Rausch) F.H. Brandt -- not accepted
  Weingartia albissima F.H. Brandt -- not accepted
  Weingartia ambigua (Hildm. ex K. Schum.) Backeb. -- not accepted
  Weingartia ansaldoensis F.H. Brandt -- not accepted
  Weingartia arenacea (Cárdenas) F.H. Brandt -- not accepted
  Weingartia attenuata F.H. Brandt -- not accepted
  Weingartia aureispina (Rausch) F.H. Brandt -- not accepted
  Weingartia backebergiana F.H. Brandt -- not accepted
  Weingartia brachygraphisa F.H. Brandt -- not accepted
  Weingartia breviflora (Backeb.) F.H. Brandt -- not accepted
  Weingartia brevispina F.H. Brandt -- not accepted
  Weingartia buiningiana F. Ritter -- not accepted
  Weingartia caineana (Cárdenas) F.H. Brandt -- not accepted
  Weingartia candiae (Cárdenas) F.H. Brandt -- not accepted
  Weingartia canigueralii (Cárdenas) F.H. Brandt -- not accepted
  Weingartia caracarensis (Cárdenas) F.H. Brandt -- not accepted
  Weingartia cardenasiana (R. Vásquez) F.H. Brandt -- not accepted
  Weingartia chilensis (Backeb.) Backeb. -- not accepted
  Weingartia cintiensis Cárdenas -- not accepted
  Weingartia clavata F.H. Brandt -- not accepted
  Weingartia columnaris F.H. Brandt -- not accepted
  Weingartia corroana (Cárdenas) Cárdenas -- not accepted
  Weingartia crispata (Rausch) F.H. Brandt -- not accepted
  Weingartia croceareolata F.H. Brandt -- not accepted
  Weingartia cylindrica (Donald & A.B. Lau) F.H. Brandt -- not accepted
  Weingartia electracantha (Backeb.) F.H. Brandt -- not accepted
  Weingartia erinacea F. Ritter -- not accepted
  Weingartia fidaiana (Backeb.) Werderm. -- not accepted
  Weingartia fidaiana ssp. cintiensis (Cárdenas) Donald -- not accepted
  Weingartia flavissima (Rausch) F.H. Brandt -- not accepted
  Weingartia formosa F.H. Brandt -- not accepted
  Weingartia frankiana (Rausch) F.H. Brandt -- not accepted
  Weingartia glomeriseta (Cárdenas) F.H. Brandt -- not accepted
  Weingartia glomerispina (Cárdenas) F.H. Brandt -- not accepted
  Weingartia gracilispina F. Ritter -- not accepted
  Weingartia haseltonii (Cárdenas) F.H. Brandt -- not accepted
  Weingartia hediniana Backeb. -- not accepted
  Weingartia inflexiseta (Cárdenas) F.H. Brandt -- not accepted
  Weingartia jarmilae Halda & Horácek -- not accepted
  Weingartia kargliana Rausch -- not accepted
  Weingartia krahnii (Rausch) F.H. Brandt -- not accepted
  Weingartia krugerae (Cárdenas) F.H. Brandt -- not accepted
  Weingartia lanata F. Ritter -- not accepted
  Weingartia lanata ssp. longigibba (F. Ritter) Donald -- not accepted
  Weingartia lanata ssp. pilcomayensis (Cárdenas) Donald -- not accepted
  Weingartia lanata ssp. riograndensis (F. Ritter) Donald -- not accepted
  Weingartia lecoriensis Cárdenas -- not accepted
  Weingartia lepida (F. Ritter) F.H. Brandt -- not accepted
  Weingartia longigibba F. Ritter -- not accepted
  Weingartia losenickyana (Rausch) F.H. Brandt -- not accepted
  Weingartia mairanana F.H. Brandt -- not accepted
  Weingartia margarethae (Rausch) F.H. Brandt -- not accepted
  Weingartia markusii (Rausch) F.H. Brandt -- not accepted
  Weingartia mataralensis F.H. Brandt -- not accepted
  Weingartia menesesii (Cárdenas) F.H. Brandt -- not accepted
  Weingartia mentosa (F. Ritter) F.H. Brandt -- not accepted
  Weingartia minima (Rausch) F.H. Brandt -- not accepted
  Weingartia miranda F.H. Brandt -- not accepted
  Weingartia mizquensis (Rausch) F.H. Brandt -- not accepted
  Weingartia multispina F. Ritter -- not accepted
  Weingartia muschii (R. Vásquez) F.H. Brandt -- not accepted
  Weingartia neglecta F.H. Brandt -- not accepted
  Weingartia neocumingii Backeb. -- not accepted
  Weingartia neocumingii ssp. pulquinensis (Cárdenas) Donald -- not accepted
  Weingartia neumanniana (Backeb.) Werderm. -- not accepted
  Weingartia oenantha (Rausch) F.H. Brandt -- not accepted
  Weingartia oligacantha F.H. Brandt -- not accepted
  Weingartia pampagrandensis (Rausch) F.H. Brandt -- not accepted
  Weingartia pasopayana F.H. Brandt -- not accepted
  Weingartia pilcomayensis Cárdenas -- not accepted
  Weingartia platygona Cárdenas -- not accepted
  Weingartia polymorpha (Cárdenas) F.H. Brandt -- not accepted
  Weingartia pulchra (Cárdenas) F.H. Brandt -- not accepted
  Weingartia pulquinensis Cárdenas -- not accepted
  Weingartia purpurea Donald & A.B. Lau -- not accepted
  Weingartia pygmaea F. Ritter -- not accepted
  Weingartia rauschii (Gerhart Frank) F.H. Brandt -- not accepted
  Weingartia riograndensis F. Ritter -- not accepted
  Weingartia ritteri F.H. Brandt -- not accepted
  Weingartia rubro-aurea F.H. Brandt -- not accepted
  Weingartia saetosa F.H. Brandt -- not accepted
  Weingartia saipinensis F.H. Brandt -- not accepted
  Weingartia sanguineo-tarijensis F.H. Brandt -- not accepted
  Weingartia steinbachii (Werderm.) F.H. Brandt -- not accepted
  Weingartia sucrensis F. Ritter -- not accepted
  Weingartia tarabucoensis (Rausch) F.H. Brandt -- not accepted
  Weingartia taratensis (Cárdenas) F.H. Brandt -- not accepted
  Weingartia tarijensis (Cárdenas) F.H. Brandt -- not accepted
  Weingartia tiraquensis (Cárdenas) F.H. Brandt -- not accepted
  Weingartia torotorensis Cárdenas -- not accepted
  Weingartia totoralensis F.H. Brandt -- not accepted
  Weingartia totorensis (Cárdenas) F.H. Brandt -- not accepted
  Weingartia trollii Oeser -- not accepted
  Weingartia tuberculato-chrysantha (Cárdenas) F.H. Brandt -- not accepted
  Weingartia tunariensis (Cárdenas) F.H. Brandt -- not accepted
  Weingartia verticillacantha (Wessner) F.H. Brandt -- not accepted
  Weingartia vilcayensis Cárdenas -- not accepted
  Weingartia viscarrae (Cárdenas) F.H. Brandt -- not accepted
  Weingartia vizcarrae (Cárdenas) F.H. Brandt -- not accepted
  Weingartia vorwerkii (Fric) Backeb. -- not accepted
  Weingartia westii (Hutchison) Donald -- not accepted
  Weingartia zavaletae (Cárdenas) F.H. Brandt -- not accepted
  Werckleocereus Britton & Rose -- not accepted
  Werckleocereus glaber (Eichlam) Britton & Rose -- not accepted
  Werckleocereus glaber (Eichlam) F.H. Brandt -- not accepted
  Werckleocereus imitans Kimnach & Hutchison -- not accepted
  Werckleocereus tonduzii (F.A.C. Weber) Britton & Rose -- not accepted
  Wigginsia D.M. Porter -- not accepted
  Wigginsia acuata (Link & Otto) F. Ritter -- not accepted
  Wigginsia arechavaletae (K. Schum. ex Speg.) D.M. Porter -- not accepted
  Wigginsia corynodes (Pfeiff.) D.M. Porter -- not accepted
  Wigginsia courantii (Lem.) F. Ritter -- not accepted
  Wigginsia fricii (Arechav.) D.M. Porter -- not accepted
  Wigginsia horstii F. Ritter -- not accepted
  Wigginsia langsdorffii (Lehm.) D.M. Porter -- not accepted
  Wigginsia leprosorum F. Ritter -- not accepted
  Wigginsia leucocarpa (Arechav.) D.M. Porter -- not accepted
  Wigginsia longispina F. Ritter -- not accepted
  Wigginsia macrocantha (Arechav.) D.M. Porter -- not accepted
  Wigginsia macrogona (Arechav.) D.M. Porter -- not accepted
  Wigginsia polyacantha (Link & Otto) F. Ritter -- not accepted
  Wigginsia prolifera F. Ritter -- not accepted
  Wigginsia schaeferiana W.R. Abraham & J. Theun. -- not accepted
  Wigginsia sellowii (Link & Otto) F. Ritter -- not accepted
  Wigginsia stegmannii (Backeb.) D.M. Porter -- not accepted
  Wigginsia tephracantha (Link & Otto) D.M. Porter -- not accepted
  Wigginsia turbinata (Arechav.) D.M. Porter -- not accepted
  Wigginsia vorwerkiana (Werderm.) D.M. Porter -- not accepted
  Wilcoxia Britton & Rose -- not accepted
  Wilcoxia albiflora Backeb. -- not accepted
  Wilcoxia diguetii (F.A.C. Weber) Peebles -- not accepted
  Wilcoxia kroenleinii A. Cartier -- not accepted
  Wilcoxia papillosa Britton & Rose -- not accepted
  Wilcoxia poselgeri (Lem.) Britton & Rose -- not accepted
  Wilcoxia schmollii (Weing.) Backeb. -- not accepted
  Wilcoxia striata (Brandegee) Britton & Rose -- not accepted
  Wilcoxia tamaulipensis Werderm. -- not accepted
  Wilcoxia tomentosa Bravo -- not accepted
  Wilcoxia viperina (F.A.C. Weber) Britton & Rose -- not accepted
  Wilcoxia zopilotensis J. Meyrán -- not accepted
  Wilmattea Britton & Rose -- not accepted
  Wilmattea minutiflora (Britton & Rose) Britton & Rose -- not accepted
  Wilmattea venezuelensis Croizat -- not accepted
  Wittiocactus Rauschert -- not accepted
  Wittiocactus amazonicus (K. Schum.) Rauschert -- not accepted
  Wittiocactus panamensis (Britton & Rose) Rauschert -- not accepted
  Yavia R. Kiesling & Piltz -- accepted
  Yavia cryptocarpa R. Kiesling & Piltz -- accepted
  Yungasocereus F. Ritter -- accepted
  Yungasocereus inquisivensis (Cárdenas) F. Ritter -- accepted
  Zehntnerella Britton & Rose -- not accepted
  Zehntnerella chaetacantha F. Ritter -- not accepted
  Zehntnerella polygona F. Ritter -- not accepted
  Zehntnerella squamulosa Britton & Rose -- not accepted
   

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