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Taxon author: F. Ritter

ITIS records citing taxon author "F. Ritter"
 
 Kingdom Plantae
  Acanthocalycium brevispinum F. Ritter -- not accepted
  Acanthocalycium catamarcense F. Ritter -- not accepted
  Acanthocalycium glaucum F. Ritter -- not accepted
  Armatocereus arduus F. Ritter -- not accepted
  Armatocereus mataranus F. Ritter & Y. Itô -- not accepted
  Armatocereus mataranus ssp. mataranus F. Ritter & Y. Itô -- not accepted
  Armatocereus mataranus var. ancashensis F. Ritter -- not accepted
  Armatocereus rauhii ssp. balsasensis (F. Ritter) Ostolaza -- accepted
  Armatocereus rupicola F. Ritter -- not accepted
  Arrojadoa multiflora F. Ritter -- not accepted
  Arthrocereus melanurus ssp. odorus (F. Ritter) N.P. Taylor & Zappi -- accepted
  Arthrocereus odorus F. Ritter -- not accepted
  Arthrocereus spinosissimus (Buining & Brederoo) F. Ritter -- accepted
  Austrocactus hibernus F. Ritter -- not accepted
  Austrocactus spiniflorus (Phil.) F. Ritter -- accepted
  Austrocylindropuntia chuquisacana (Cárdenas) F. Ritter -- not accepted
  Austrocylindropuntia floccosa (Salm-Dyck) F. Ritter -- accepted
  Austrocylindropuntia lauliacoana F. Ritter -- not accepted
  Austrocylindropuntia machacana F. Ritter -- not accepted
  Austrocylindropuntia malyana (Rausch) F. Ritter -- not accepted
  Blossfeldia liliputana var. atroviridis (F. Ritter) 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 brevicaulis F. Ritter -- not accepted
  Bolivicereus croceus F. Ritter -- not accepted
  Bolivicereus rufus F. Ritter -- not accepted
  Borzicactus cajamarcensis F. Ritter -- not accepted
  Borzicactus calviflorus F. Ritter -- not accepted
  Borzicactus formosus (F. Ritter) Donald -- not accepted
  Borzicactus fruticosus (F. Ritter) Donald -- not accepted
  Borzicactus intertextus (F. Ritter) Donald -- not accepted
  Borzicactus neoroezlii F. Ritter -- not accepted
  Borzicactus oreodoxus (F. Ritter) Donald -- not accepted
  Borzicactus paucicostatus (F. Ritter) Donald -- not accepted
  Borzicactus purpureus F. Ritter -- not accepted
  Borzicactus samnensis F. Ritter -- not accepted
  Brasilicereus breviflorus F. Ritter -- not accepted
  Brasilicereus phaeacanthus ssp. breviflorus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Browningia albiceps F. Ritter -- not accepted
  Browningia altissima (F. Ritter) Buxb. -- accepted
  Browningia candelaris ssp. icaensis (F. Ritter) D.R. Hunt -- accepted
  Browningia columnaris F. Ritter -- accepted
  Browningia icaensis F. Ritter -- not accepted
  Browningia pilleifera (F. Ritter) Hutchison -- accepted
  Calymmanthium F. Ritter -- accepted
  Calymmanthium substerile F. Ritter -- accepted
  Cephalocleistocactus F. Ritter -- not accepted
  Cephalocleistocactus chrysocephalus F. Ritter -- not accepted
  Cereus alticostatus (F. Ritter) P.J. Braun & Esteves -- 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 campinensis ssp. piedadensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus campinensis var. piedadensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus euchlorus ssp. leucanthus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus fernambucensis ssp. sericifer (F. Ritter) N.P. Taylor & Zappi -- accepted
  Cereus goiasensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus hildmannianus ssp. uruguayanus (F. Ritter ex R. Kiesling) N.P. Taylor -- 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 lamprospermus ssp. colosseus (F. Ritter) P.J. Braun & Esteves -- accepted
  Cereus lanosus (F. Ritter) P.J. Braun & Esteves -- accepted
  Cereus neonesioticus (F. Ritter) P.J. Braun -- not accepted
  Cereus ritteri ssp. parapetiensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus sericifer (F. Ritter) P.J. Braun & Esteves -- not accepted
  Cereus uruguayanus F. Ritter ex R. Kiesling -- not accepted -- hedge cactus, Peruvian apple, Peruvian torch, spine tree cactus
  Chileorebutia F. Ritter -- not accepted
  Chileorebutia duripulpa F. Ritter -- not accepted
  Chileorebutia esmeraldana F. Ritter -- not accepted
  Chileorebutia malleolata F. Ritter -- not accepted
  Cipocereus F. Ritter -- accepted
  Cipocereus minensis (Werderm.) F. Ritter -- accepted
  Cipocereus minensis ssp. minensis (Werderm.) F. Ritter -- accepted
  Cipocereus minensis ssp. pleurocarpus (F. Ritter) N.P. Taylor & Zappi -- not accepted
  Cipocereus pleurocarpus F. Ritter -- not accepted
  Cipocereus pusilliflorus (F. Ritter) Barthlott & N.P. Taylor -- accepted
  Cleistocactus aureispinus (F. Ritter) D.R. Hunt -- not 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 brevispinus F. Ritter -- not accepted
  Cleistocactus brookeae ssp. vulpis-cauda (F. Ritter & Cullmann) Mottram -- accepted
  Cleistocactus capadalensis F. Ritter -- not accepted
  Cleistocactus chacoanus F. Ritter -- not accepted
  Cleistocactus chrysocephalus (F. Ritter) Mottram -- accepted
  Cleistocactus croceiflorus F. Ritter -- not accepted
  Cleistocactus fieldianus ssp. samnensis (F. Ritter) Ostolaza -- not accepted
  Cleistocactus glaucus F. Ritter -- not accepted
  Cleistocactus granjaensis F. Ritter -- not accepted
  Cleistocactus hildegardiae F. Ritter -- not accepted
  Cleistocactus micropetalus F. Ritter -- not accepted
  Cleistocactus muyurinensis F. Ritter -- not accepted
  Cleistocactus neoroezlii (F. Ritter) Buxb. -- accepted
  Cleistocactus palhuayensis F. Ritter & Shahori -- not accepted
  Cleistocactus paraguariensis F. Ritter -- not accepted
  Cleistocactus pungens F. Ritter -- accepted
  Cleistocactus tominensis ssp. micropetalus (F. Ritter) Mottram -- accepted
  Cleistocactus varispinus F. Ritter -- accepted
  Cleistocactus villaazuensis F. Ritter -- not accepted
  Cleistocactus villaazulensis F. Ritter -- not accepted
  Cleistocactus vulpis-cauda F. Ritter & Cullmann -- not accepted
  Cleistocactus xylorhizus (F. Ritter) Ostolaza -- accepted
  Clistanthocereus calviflorus (F. Ritter) Backeb. -- not accepted
  Clistanthocereus samnensis (F. Ritter) Backeb. -- not accepted
  Coleocephalocereus aureus F. Ritter -- accepted
  Coleocephalocereus brevicylindricus (Buining) F. Ritter -- not accepted
  Coleocephalocereus buxbaumianus ssp. flavisetus (F. Ritter) N.P. Taylor & Zappi -- accepted
  Coleocephalocereus decumbens F. Ritter -- not accepted
  Coleocephalocereus flavisetus F. Ritter -- not accepted
  Coleocephalocereus fluminensis ssp. decumbens (F. Ritter) N.P. Taylor & Zappi -- accepted
  Coleocephalocereus fluminensis ssp. paulensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Coleocephalocereus purpureus (Buining & Brederoo) F. Ritter -- accepted
  Copiapoa alticostata F. Ritter -- not accepted
  Copiapoa boliviana (Pfeiff.) F. Ritter -- not accepted
  Copiapoa calderana F. Ritter -- not accepted
  Copiapoa calderana ssp. calderana F. Ritter -- not accepted
  Copiapoa calderana ssp. longistaminea (F. Ritter) N.P. Taylor -- not accepted
  Copiapoa calderiana F. Ritter -- 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 chanaralensis F. Ritter -- not accepted
  Copiapoa chaniaralensis F. Ritter -- not accepted
  Copiapoa cinerea ssp. columna-alba (F. Ritter) D.R. Hunt -- accepted
  Copiapoa cinerea ssp. dealbata (F. Ritter) Slaba -- not 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. 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 cuprea F. Ritter -- not accepted
  Copiapoa dealbata F. Ritter -- accepted
  Copiapoa desertorum F. Ritter -- not accepted
  Copiapoa dura F. Ritter -- not accepted
  Copiapoa echinata F. Ritter -- not accepted
  Copiapoa eremophila F. Ritter -- not accepted
  Copiapoa esmeraldana F. Ritter -- accepted
  Copiapoa grandiflora F. Ritter -- accepted
  Copiapoa hornilloensis F. Ritter -- not 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. tenuissima F. Ritter ex D.R. Hunt -- not accepted
  Copiapoa krainziana F. Ritter -- accepted
  Copiapoa longispina F. Ritter -- not accepted
  Copiapoa longistaminea F. Ritter -- accepted
  Copiapoa megarhiza var. echinata (F. Ritter) A.E. Hoffm. -- 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 montana ssp. montana F. Ritter -- not accepted
  Copiapoa olivana F. Ritter -- not accepted
  Copiapoa paposoensis F. Ritter -- not accepted
  Copiapoa pendulina F. Ritter -- 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 taltalensis ssp. desertorum (F. Ritter) G.J. Charles -- 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
  Copiapoa varispinata F. Ritter -- not accepted
  Corryocactus acervatus F. Ritter -- not accepted
  Corryocactus brachycladus F. Ritter -- not accepted
  Corryocactus brevistylus var. puquiensis (Rauh & Backeb.) F. Ritter -- 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 huincoensis F. Ritter -- not accepted
  Corryocactus matucanensis F. Ritter -- not accepted
  Corryocactus megarhizus F. Ritter -- not accepted
  Corryocactus melaleucus F. Ritter -- not accepted
  Corryocactus odoratus F. Ritter -- not accepted
  Corryocactus pilispinus F. Ritter -- not accepted
  Corryocactus prostratus F. Ritter -- 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
  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. echinacea (F. Ritter) D.R. Hunt -- accepted
  Cumulopuntia crassicylindrica (Rauh & Backeb.) F. Ritter ex Eggli -- not accepted
  Cumulopuntia echinacea (F. Ritter) F. Ritter -- not accepted
  Cumulopuntia famatinensis F. Ritter -- not accepted
  Cumulopuntia frigida F. Ritter -- 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 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 rossiana (Heinrich & Backeb.) F. Ritter -- 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
  Echinopsis ancistrophora ssp. arachnacantha (Buining & F. Ritter) Rausch -- not accepted
  Echinopsis arachnacantha (Buining & F. Ritter) H. Friedrich -- accepted
  Echinopsis arachnacantha ssp. arachnacantha (Buining & F. Ritter) H. Friedrich -- accepted
  Echinopsis ayopayana F. Ritter & Rausch -- accepted
  Echinopsis boyuibensis F. Ritter -- not accepted
  Echinopsis brevispina (F. Ritter) H. Friedrich & G.D. Rowley -- not accepted
  Echinopsis bridgesii ssp. yungasensis (F. Ritter) P.J. Braun & Esteves -- accepted
  Echinopsis cajasensis F. Ritter -- not accepted
  Echinopsis caulescens (F. Ritter) M. Lowry -- accepted
  Echinopsis clavata (F. Ritter) D.R. Hunt -- accepted
  Echinopsis clavatus (F. Ritter) D.R. Hunt -- not accepted
  Echinopsis glauca (F. Ritter) H. Friedrich & G.D. Rowley -- accepted
  Echinopsis hystrichoides F. Ritter -- not accepted
  Echinopsis mamillosa ssp. silvatica (F. Ritter) P.J. Braun & Esteves -- not accepted
  Echinopsis obrepanda ssp. tapecuana (F. Ritter) G. Navarro -- not accepted
  Echinopsis paraguayensis Mundt ex F. Ritter -- not accepted
  Echinopsis quadratiumbonata (F. Ritter) D.R. Hunt -- accepted
  Echinopsis quadratiumbonatus (F. Ritter) D.R. Hunt -- not accepted
  Echinopsis scopulicola (F. Ritter) Mottram -- not accepted
  Echinopsis silvatica F. Ritter -- not accepted
  Echinopsis tapecuana F. Ritter -- not accepted
  Echinopsis thionantha ssp. glauca (F. Ritter) M. Lowry -- accepted
  Echinopsis yungasensis F. Ritter -- not accepted
  Eomatucana F. Ritter -- not accepted
  Eomatucana madisoniorum (Hutchison) F. Ritter -- not accepted
  Eomatucana oreodoxa F. Ritter -- not accepted
  Erdisia fortalezensis F. Ritter -- not accepted
  Eriocactus ampliocostatus F. Ritter -- not accepted
  Eriocactus claviceps F. Ritter -- not accepted
  Eriocactus magnificus F. Ritter -- not accepted
  Eriocactus nigrispinus (K. Schum.) F. Ritter -- not accepted
  Eriocactus warasii F. Ritter -- not accepted
  Eriosyce aerocarpa (F. Ritter) Katt. -- not accepted
  Eriosyce algarrobensis F. Ritter -- not accepted
  Eriosyce calderana (F. Ritter) Ferryman -- accepted
  Eriosyce confinis (F. Ritter) Katt. -- accepted
  Eriosyce crispa (F. Ritter) Katt. -- accepted
  Eriosyce crispa ssp. atroviridis (F. Ritter) Katt. -- not accepted
  Eriosyce crispa ssp. crispa (F. Ritter) Katt. -- accepted
  Eriosyce crispa ssp. totoralensis (F. Ritter) Katt. -- accepted
  Eriosyce curvispina ssp. armata (F. Ritter) Katt. -- accepted
  Eriosyce curvispina ssp. marksiana (F. Ritter) Ferryman -- accepted
  Eriosyce engleri (F. Ritter) Katt. -- 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 ssp. intermedia (F. Ritter) Katt. -- not accepted
  Eriosyce heinrichiana ssp. simulans (F. Ritter) Katt. -- not accepted
  Eriosyce ihotzkyanae F. Ritter -- not accepted
  Eriosyce iquiquensis (F. Ritter) Ferryman -- accepted
  Eriosyce krausii (F. Ritter) Katt. -- not accepted
  Eriosyce lapampaensis F. Ritter -- not accepted
  Eriosyce limariensis (F. Ritter) Katt. -- not accepted
  Eriosyce marksiana (F. Ritter) Katt. -- not accepted
  Eriosyce megacarpa F. Ritter -- not 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. tenebrica (F. Ritter) Ferryman -- accepted
  Eriosyce odieri ssp. fulva (F. Ritter) Katt. -- not accepted
  Eriosyce odieri ssp. glabrescens (F. Ritter) Katt. -- not accepted
  Eriosyce odieri ssp. krausii (F. Ritter) Ferryman -- 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 recondita ssp. iquiquensis (F. Ritter) Katt. -- not accepted
  Eriosyce recondita ssp. recondita (F. Ritter) Katt. -- not accepted
  Eriosyce rodentiophila F. Ritter -- accepted
  Eriosyce senilis ssp. coimasensis (F. Ritter) Katt. -- accepted
  Eriosyce simulans (F. Ritter) Katt. -- accepted
  Eriosyce sociabilis (F. Ritter) Katt. -- accepted
  Eriosyce spinibarbis F. Ritter -- not accepted
  Eriosyce subgibbosa ssp. vallenarensis (F. Ritter) Katt. -- accepted
  Eriosyce subgibbosa ssp. wagenknechtii (F. Ritter) Katt. -- accepted
  Eriosyce taltalensis ssp. echinus (F. Ritter) Katt. -- not accepted
  Eriosyce taltalensis ssp. paucicostata (F. Ritter) Katt. -- not accepted
  Eriosyce taltalensis ssp. pilispina (F. Ritter) Katt. -- not accepted
  Eriosyce taltalensis ssp. pygmaea (F. Ritter) Ferryman -- accepted
  Eriosyce tenebrica (F. Ritter) Katt. -- not accepted
  Espostoa calva F. Ritter -- accepted
  Espostoa huanucoensis H. Johnson ex F. Ritter -- not accepted
  Espostoa hylaea F. Ritter -- accepted
  Espostoa lanata ssp. huanucoensis (H. Johnson ex F. Ritter) G.J. Charles -- 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 melanostele ssp. nana (F. Ritter) G.J. Charles -- accepted
  Espostoa mirabilis F. Ritter -- accepted
  Espostoa nana F. Ritter -- not accepted
  Espostoa ruficeps F. Ritter -- not accepted
  Espostoa senilis (F. Ritter) N.P. Taylor -- accepted
  Espostoa superba F. Ritter -- accepted
  Eulychnia aricensis F. Ritter -- not accepted
  Eulychnia barquitensis F. Ritter -- not accepted
  Eulychnia morromorenoensis F. Ritter -- not accepted
  Eulychnia saint-pieana F. Ritter -- not accepted
  Facheiroa chaetacantha (F. Ritter) P.J. Braun & Esteves -- not accepted
  Facheiroa pilosa F. Ritter -- not accepted
  Facheiroa squamosa ssp. polygona (F. Ritter) P.J. Braun & Esteves -- not accepted
  Floribunda F. Ritter -- not accepted
  Floribunda pusilliflora F. Ritter -- not accepted
  Frailea albicolumnaris F. Ritter -- not accepted
  Frailea albifusca F. Ritter -- not accepted
  Frailea asperispina F. Ritter -- not accepted
  Frailea aureispina F. Ritter -- not accepted
  Frailea castanea ssp. harmoniana (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea gracillima ssp. albifusca (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea gracillima ssp. horstii (F. Ritter) P.J. Braun & Esteves -- accepted
  Frailea horstii F. Ritter -- not accepted
  Frailea perumbilicata F. Ritter -- not accepted
  Frailea pseudogracillima F. Ritter -- not accepted
  Frailea pumila ssp. maior (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea pumila var. maior F. Ritter -- not 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. aureispina (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea pygmaea ssp. lilalunula (F. Ritter) P.J. Braun & Esteves -- not accepted
  Frailea pygmaea var. altigibbera F. Ritter -- not accepted
  Frailea pygmaea var. lilalunula F. Ritter -- not accepted
  Gymnanthocereus altissimus F. Ritter -- not accepted
  Gymnanthocereus macracanthus F. Ritter -- not accepted
  Gymnanthocereus pilleifer F. Ritter -- not accepted
  Gymnocalycium antherostele F. Ritter -- not accepted
  Gymnocalycium armatum F. Ritter -- not accepted
  Gymnocalycium cardenasianum F. Ritter -- not accepted
  Gymnocalycium eurypleurum F. Ritter -- accepted
  Gymnocalycium glaucum F. Ritter -- accepted
  Gymnocalycium glaucum ssp. glaucum F. Ritter -- accepted
  Gymnocalycium hamatum F. Ritter -- not accepted
  Gymnocalycium paediophilum F. Ritter ex Schütz -- not accepted
  Gymnocalycium pediophilum F. Ritter ex Schütz -- not accepted
  Gymnocalycium spegazzinii ssp. cardenasianum (F. Ritter) R. Kiesling & Metzing -- accepted
  Gymnocalycium stenopleurum F. Ritter -- accepted
  Haageocereus chalaensis F. Ritter -- not accepted
  Haageocereus chilensis F. Ritter ex D.R. Hunt -- accepted
  Haageocereus chryseus F. Ritter -- not accepted
  Haageocereus churinensis (F. Ritter) P.V. Heath -- not accepted
  Haageocereus decumbens ssp. tenuis (F. Ritter) D.R. Hunt -- not accepted
  Haageocereus fascicularis (Meyen) F. Ritter -- not accepted
  Haageocereus fulvus F. Ritter -- not accepted
  Haageocereus icensis Backeb. ex F. Ritter -- not accepted
  Haageocereus johnsonii (F. Ritter) P.V. Heath -- not accepted
  Haageocereus lanugispinus F. Ritter -- not accepted
  Haageocereus longicomus (F. Ritter) P.V. Heath -- not accepted
  Haageocereus subtilispinus F. Ritter -- not accepted
  Haageocereus tenuis F. Ritter -- accepted
  Haageocereus torataensis (F. Ritter) P.V. Heath -- not accepted
  Haageocereus vulpes F. Ritter -- not accepted
  Haageocereus winterianus (F. Ritter) P.V. Heath -- not accepted
  Haageocereus zangalensis F. Ritter -- not accepted
  Hildewintera F. Ritter ex G.D. Rowley -- not accepted
  Hildewintera aureispina (F. Ritter) F. Ritter ex G.D. Rowley -- 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 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 lissocarpus (F. Ritter) Backeb. -- not accepted
  Horridocactus marksianus (F. Ritter) Backeb. -- not accepted
  Horridocactus robustus (F. Ritter) Y. Itô -- not accepted
  Horridocactus vallenarensis (F. Ritter) Backeb. -- 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 divaricatiflora F. Ritter -- not accepted
  Islaya islayensis var. minor (Backeb.) F. Ritter -- not accepted
  Islaya krainziana F. Ritter -- not accepted
  Islaya maritima F. Ritter -- not accepted
  Islaya minuscula F. Ritter -- not accepted
  Islaya unguispina F. Ritter -- not accepted
  Lasiocereus F. Ritter -- accepted
  Lasiocereus fulvus F. Ritter -- accepted
  Lasiocereus rupicola F. Ritter -- accepted
  Leocereus urandianus F. Ritter -- not accepted
  Lobivia adpressispina F. Ritter -- not accepted
  Lobivia arachnacantha Buining & F. Ritter -- not accepted
  Lobivia backebergii var. winteriana (F. Ritter) Rausch -- not accepted
  Lobivia buiningiana F. Ritter -- not accepted
  Lobivia campicola F. Ritter -- not accepted
  Lobivia culpinensis F. Ritter -- not accepted
  Lobivia glaucescens F. Ritter -- not accepted
  Lobivia horrida F. Ritter -- not accepted
  Lobivia hystrix F. Ritter -- not accepted
  Lobivia miniatiflora F. Ritter -- not accepted
  Lobivia minuta F. Ritter -- not accepted
  Lobivia purpureominiata F. Ritter -- not accepted
  Lobivia pusilla F. Ritter -- not accepted
  Lobivia tuberculosa F. Ritter -- not accepted
  Lobivia variispina F. Ritter -- not accepted
  Lobivia vilcabambae F. Ritter -- not accepted
  Lobivia winteriana F. Ritter -- not accepted
  Loxanthocereus bicolor F. Ritter -- not accepted
  Loxanthocereus convergens F. Ritter -- not accepted
  Loxanthocereus deserticola F. Ritter -- not accepted
  Loxanthocereus eremiticus F. Ritter -- not accepted
  Loxanthocereus hoffmannii F. Ritter -- not accepted
  Loxanthocereus montanus F. Ritter -- 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 parvitesselatus F. Ritter -- not accepted
  Loxanthocereus puquiensis F. Ritter -- 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
  Maihuenia albolanata F. Ritter -- not accepted
  Maihuenia cumulata F. Ritter -- not accepted
  Maihuenia latispina F. Ritter -- not accepted
  Maihueniopsis albomarginata F. Ritter -- not accepted
  Maihueniopsis archiconoidea F. Ritter -- accepted
  Maihueniopsis atacamensis (Phil.) F. Ritter -- not accepted
  Maihueniopsis camachoi (Espinosa) F. Ritter -- not 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 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 molinensis (Speg.) F. Ritter -- not accepted
  Maihueniopsis neuquensis (Borg) F. Ritter -- not accepted
  Maihueniopsis ovallei (J. Rémy) F. Ritter -- not accepted
  Maihueniopsis ovata (Pfeiff.) F. Ritter -- not accepted
  Maihueniopsis rahmeri (Phil.) F. Ritter -- not accepted
  Maihueniopsis tarapacana (Phil.) F. Ritter -- not accepted
  Mammillaria zahniana Boed. & F. Ritter -- not 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 aureiflora F. Ritter -- accepted
  Matucana calliantha F. Ritter -- not accepted
  Matucana celendinensis F. Ritter -- not accepted
  Matucana comacephala F. Ritter -- not accepted
  Matucana crinifera F. Ritter -- not accepted
  Matucana currundayensis F. Ritter -- not accepted
  Matucana formosa F. Ritter -- accepted
  Matucana fruticosa F. Ritter -- not accepted
  Matucana hastifera F. Ritter -- not accepted
  Matucana intertexta F. Ritter -- accepted
  Matucana megalantha F. Ritter -- not accepted
  Matucana oreodoxa (F. Ritter) Slaba -- accepted
  Matucana pallarensis F. Ritter -- not accepted
  Matucana paucicostata F. Ritter -- accepted
  Matucana purpureoalba F. Ritter -- not accepted
  Matucana supertexta F. Ritter -- not accepted
  Matucana tuberculosa (Donald) F. Ritter -- not accepted
  Matucana winteri F. Ritter -- not accepted
  Melocactus bellavistensis ssp. onychacanthus (F. Ritter) N.P. Taylor -- accepted
  Melocactus canescens F. Ritter -- not accepted
  Melocactus interpositus F. Ritter -- not accepted
  Melocactus montanus F. Ritter -- not accepted
  Melocactus nitidus F. Ritter -- not accepted
  Melocactus onychacanthus F. Ritter -- not accepted
  Melocactus rubrispinus F. Ritter -- not accepted
  Melocactus zehntneri ssp. canescens (F. Ritter) P.J. Braun & Esteves -- not accepted
  Micranthocereus albicephalus (Buining & Brederoo) F. Ritter -- accepted
  Micranthocereus aureispinus F. Ritter -- not accepted
  Micranthocereus dolichospermaticus (Buining & Brederoo) F. Ritter -- accepted
  Micranthocereus estevesii (Buining & Brederoo) F. Ritter -- accepted
  Micranthocereus haematocarpus F. Ritter -- not accepted
  Micranthocereus monteazulensis F. Ritter -- not accepted
  Micranthocereus purpureus (Gürke) F. Ritter -- accepted
  Micranthocereus ruficeps F. Ritter -- not accepted
  Mila colorea F. Ritter -- 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
  Monvillea alticostata F. Ritter -- not accepted
  Monvillea chacoana F. Ritter -- not accepted
  Monvillea ebenacantha F. Ritter -- not accepted
  Monvillea leucantha F. Ritter -- not accepted
  Monvillea minensis (F. Ritter) R. Kiesling -- not accepted
  Monvillea parapetiensis F. Ritter -- not accepted
  Monvillea piedadensis F. Ritter -- not accepted
  Morawetzia sericata F. Ritter -- 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
  Neoporteria aricensis (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria armata (F. Ritter) Krainz -- 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 choapensis (F. Ritter) Donald -- not accepted
  Neoporteria chorosensis (F. Ritter) Donald -- not accepted
  Neoporteria coimasensis F. Ritter -- not accepted
  Neoporteria confinis (F. Ritter) Donald -- not accepted
  Neoporteria crispa (F. Ritter) Donald -- not accepted
  Neoporteria dimorpha (F. Ritter) 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 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 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 microsperma F. Ritter -- not accepted
  Neoporteria multicolor F. Ritter -- not accepted
  Neoporteria paucicostata (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria pilispina (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria recondita (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria residua (F. Ritter & Buining) Donald & G.D. Rowley -- not accepted
  Neoporteria robusta F. Ritter -- not accepted
  Neoporteria rupicola (F. Ritter) Donald & G.D. Rowley -- not accepted
  Neoporteria scoparia (F. Ritter) 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 totoralensis (F. Ritter) Donald -- not accepted
  Neoporteria vallenarensis (F. Ritter) A.E. Hoffm. -- not accepted
  Neoporteria wagenknechtii F. Ritter -- not accepted
  Neowerdermannia chilensis ssp. peruviana (F. Ritter) Ostolaza -- not accepted
  Neowerdermannia peruviana F. Ritter -- not accepted
  Notocactus acutus F. Ritter -- not accepted
  Notocactus amplicostatus (F. Ritter) S. Theun. -- not accepted
  Notocactus arachnitis F. Ritter -- not accepted
  Notocactus campestrensis F. Ritter -- not accepted
  Notocactus catarinensis (F. Ritter) Scheinvar -- not accepted
  Notocactus catarinensis (F. Ritter) S. Theun. -- not accepted
  Notocactus crassigibbus F. Ritter -- not accepted
  Notocactus cristatoides F. Ritter -- not accepted
  Notocactus eremiticus F. Ritter -- not accepted
  Notocactus fuscus F. Ritter -- not accepted
  Notocactus glaucinus F. Ritter -- not accepted
  Notocactus harmonianus F. Ritter -- not accepted
  Notocactus horstii F. Ritter -- not accepted
  Notocactus laetevirens F. Ritter -- not accepted
  Notocactus laetivirens F. Ritter -- not accepted
  Notocactus leprosorum (F. Ritter) S. Theun. -- not accepted
  Notocactus longispinus (F. Ritter) S. Theun. -- not accepted
  Notocactus neobuenekeri F. Ritter -- not accepted
  Notocactus permutatus F. Ritter -- not accepted
  Notocactus prolifer (F. Ritter) S. Theun. -- not accepted
  Notocactus purpureus F. Ritter -- not accepted
  Notocactus securituberculatus F. Ritter -- not accepted
  Notocactus spinibarbis F. Ritter -- not accepted
  Notocactus succineus F. Ritter -- not accepted
  Notocactus tenuicylindricus F. Ritter -- not accepted
  Opuntia apurimacensis (F. Ritter) R. Crook & Mottram -- accepted
  Opuntia archiconoidea (F. Ritter) D.R. Hunt -- not accepted
  Opuntia cognata (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia colorea (F. Ritter) D.R. Hunt -- not accepted
  Opuntia conjungens (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia conoidea (F. Ritter ex Backeb.) G.D. Rowley -- not accepted
  Opuntia crassipina (F. Ritter) D.R. Hunt -- not accepted
  Opuntia crassispina (F. Ritter) D.R. Hunt -- not accepted
  Opuntia domeykoensis (F. Ritter) D.R. Hunt -- not accepted
  Opuntia frigida (F. Ritter) G. Navarro -- not accepted
  Opuntia galerasensis (F. Ritter) D.R. Hunt -- not accepted
  Opuntia ianthinantha (F. Ritter) Iliff -- not accepted
  Opuntia infesta (F. Ritter) Iliff -- not accepted
  Opuntia limitata (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia pituitosa (F. Ritter) Iliff -- not accepted
  Opuntia pyrrhantha (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia saxatilis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia sulphurea ssp. brachyacantha (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia sulphurea ssp. spinibarbis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia ticnamarensis (F. Ritter) D.R. Hunt -- not accepted
  Opuntia tumida (F. Ritter) D.R. Hunt -- not accepted
  Opuntia viridirubra (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia viridirubra ssp. rubrogemmia (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia viridirubra ssp. viridirubra (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia vitelliniflora (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia vitelliniflora ssp. interjecta (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia vitelliniflora ssp. vitelliniflora (F. Ritter) P.J. Braun & Esteves -- not accepted
  Opuntia wagenknechtii (F. Ritter) D.R. Hunt -- not accepted
  Oreocereus australis (F. Ritter) A.E. Hoffm. -- not accepted
  Oreocereus doelzianus ssp. sericatus (F. Ritter) Mottram -- accepted
  Oreocereus piscoensis (Rauh & Backeb.) F. Ritter -- not accepted
  Oreocereus tacnaensis F. Ritter -- not accepted
  Oroya gibbosa F. Ritter -- not accepted
  Parodia alacriportana ssp. catarinensis (F. Ritter) Hofacker & P.J. Braun -- not accepted
  Parodia ampliocostata (F. Ritter) F.H. Brandt -- not accepted
  Parodia betaniana F. Ritter -- not accepted
  Parodia borealis F. Ritter -- not accepted
  Parodia camargensis Buining & F. Ritter -- not accepted
  Parodia camblayana (F. Ritter) F.H. Brandt -- not accepted
  Parodia cardenasii F. Ritter -- not accepted
  Parodia castanea (F. Ritter) F. Ritter -- not accepted
  Parodia catarinensis (F. Ritter) F.H. Brandt -- not accepted
  Parodia chaetocarpa F. Ritter -- not accepted
  Parodia chlorocarpa F. Ritter -- not accepted
  Parodia cintiensis F. Ritter -- not accepted
  Parodia claviceps (F. Ritter) F.H. Brandt -- not accepted
  Parodia commutans F. Ritter -- accepted
  Parodia comosa F. Ritter -- not accepted
  Parodia compressa F. Ritter -- not accepted
  Parodia crassigibba (F. Ritter) N.P. Taylor -- accepted
  Parodia curvispina (F. Ritter) D.R. Hunt -- not accepted
  Parodia echinus F. Ritter -- not accepted
  Parodia formosa F. Ritter -- accepted
  Parodia fulvispina F. Ritter -- not accepted
  Parodia fusca (F. Ritter) Rogoz. & P.J. Braun -- accepted
  Parodia gibbulosa F. Ritter -- not accepted
  Parodia glischrocarpa F. Ritter -- not accepted
  Parodia gracilis F. Ritter -- not accepted
  Parodia heteracantha F. Ritter ex Weskamp -- not accepted
  Parodia horstii (F. Ritter) N.P. Taylor -- accepted
  Parodia magnifica (F. Ritter) F.H. Brandt -- accepted
  Parodia maxima F. Ritter -- not accepted
  Parodia minuta F. Ritter -- not accepted
  Parodia multicostata F. Ritter & Jelin. -- not accepted
  Parodia obtusa F. Ritter -- not accepted
  Parodia occulta F. Ritter -- not accepted
  Parodia ottonis ssp. horstii (F. Ritter) Hofacker -- accepted
  Parodia otuyensis F. Ritter -- not accepted
  Parodia oxycostata ssp. gracilis (F. Ritter) Hofacker -- accepted
  Parodia permutata (F. Ritter) Hofacker -- not accepted
  Parodia procera F. Ritter -- accepted
  Parodia purpureo-aurea F. Ritter -- not accepted
  Parodia roseoalba F. Ritter -- not accepted
  Parodia rubida F. Ritter -- not accepted
  Parodia rubristaminea F. Ritter -- not accepted
  Parodia schumanniana ssp. claviceps (F. Ritter) Hofacker & P.J. Braun -- accepted
  Parodia scopa ssp. neobuenekeri (F. Ritter) Rogoz. & P.J. Braun -- accepted
  Parodia scopa ssp. succinea (F. Ritter) Rogoz. & P.J. Braun -- accepted
  Parodia scoparia F. Ritter -- not accepted
  Parodia setispina F. Ritter -- not accepted
  Parodia sotomayorensis F. Ritter -- not accepted
  Parodia subterranea F. Ritter -- accepted
  Parodia subterrranea F. Ritter -- not accepted
  Parodia subtilihamata F. Ritter -- not accepted
  Parodia succinea (F. Ritter) N.P. Taylor -- not accepted
  Parodia suprema F. Ritter -- not accepted
  Parodia tenuicylindrica (F. Ritter) D.R. Hunt -- accepted
  Parodia tredecimcostata F. Ritter -- not accepted
  Parodia uebelmanniana F. Ritter -- not accepted
  Parodia variicolor F. Ritter -- not accepted
  Parodia warasii (F. Ritter) F.H. Brandt -- accepted
  Pereskia aureiflora F. Ritter -- accepted
  Pereskia sparsiflora F. Ritter -- not accepted
  Pereskia stenantha F. Ritter -- accepted
  Pfeiffera erecta F. Ritter -- not accepted
  Pfeiffera gracilis F. Ritter -- not accepted
  Pfeiffera mataralensis F. Ritter -- not accepted
  Pilocopiapoa F. Ritter -- not accepted
  Pilocopiapoa solaris F. Ritter -- not accepted
  Pilosocereus atroflavispinus F. Ritter -- not accepted
  Pilosocereus aureispinus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus aurilanatus F. Ritter -- not accepted
  Pilosocereus aurisetus ssp. aurilanatus (F. Ritter) Zappi -- accepted
  Pilosocereus aurisetus ssp. densilanatus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus azureus F. Ritter -- not accepted
  Pilosocereus carolinensis F. Ritter -- not accepted
  Pilosocereus catingicola ssp. robustus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus coerulescens (Lem.) F. Ritter -- not accepted
  Pilosocereus cyaneus F. Ritter -- not accepted
  Pilosocereus densiareolatus F. Ritter -- 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 floccosus ssp. quadricostatus (F. Ritter) Zappi -- accepted
  Pilosocereus fulvilanatus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus fulvilanatus ssp. fulvilanatus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus gaturianensis F. Ritter -- not accepted
  Pilosocereus magnificus (Buining & Brederoo) F. Ritter -- accepted
  Pilosocereus mucosiflorus (Buining & Brederoo) F. Ritter -- not accepted
  Pilosocereus multicostatus F. Ritter -- 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 paraguayensis F. Ritter -- not accepted
  Pilosocereus pernambucoensis var. caesius F. Ritter -- not accepted
  Pilosocereus piauhyensis ssp. gaturianensis (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus pleurocarpus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus pusilliflorus (F. Ritter) P.J. Braun & Esteves -- not accepted
  Pilosocereus quadricostatus F. Ritter -- not accepted
  Pilosocereus robustus F. Ritter -- not accepted
  Pilosocereus saudadensis F. Ritter -- not accepted
  Pilosocereus splendidus F. Ritter -- accepted
  Pilosocereus superbus F. Ritter -- not accepted
  Pilosocereus superfloccosus (Buining & Brederoo) F. Ritter -- not accepted
  Pilosocereus werdermannianus (Buining & Brederoo) F. Ritter -- not accepted
  Pilosocereus zehnteri (Britton & Rose) F. Ritter -- 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 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
  Pseudoacanthocereus F. Ritter -- accepted
  Pseudoacanthocereus brasiliensis (Britton & Rose) F. Ritter -- accepted
  Pseudoespostoa nana (F. Ritter) Backeb. -- not accepted
  Pseudolobivia boyuibensis (F. Ritter) Backeb. -- not accepted
  Pseudolobivia orozasana (F. Ritter) Backeb. -- not accepted
  Pseudopilocereus atroflavispinus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus aurilanatus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus carolinensis (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus densiareolatus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus gaturianensis (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus multicostatus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus oreus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus pachycladus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus pernambucoensis (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus quadricostatus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus robustus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus saudadensis (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus splendidus (F. Ritter) P.V. Heath -- not accepted
  Pseudopilocereus superbus (F. Ritter) P.V. Heath -- not accepted
  Pygmaeocereus familiaris F. Ritter -- 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 atroviridis F. Ritter -- 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 dimorphus F. Ritter -- 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 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 neohankeanus F. Ritter -- not accepted
  Pyrrhocactus odoriflorus F. Ritter -- 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 saxifragus F. Ritter -- not accepted
  Pyrrhocactus scoparius F. Ritter -- not accepted
  Pyrrhocactus setosiflorus F. Ritter -- not accepted
  Pyrrhocactus simulans F. Ritter -- 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 vallenarensis F. Ritter -- not accepted
  Pyrrhocactus vexatus F. Ritter -- not accepted
  Pyrrhocactus wagenknechtii F. Ritter -- not accepted
  Rebutia albiareolata F. Ritter -- not accepted
  Rebutia albiflora F. Ritter & Buining -- not accepted
  Rebutia albipilosa F. Ritter -- not accepted
  Rebutia archibuiningiana F. Ritter -- not accepted
  Rebutia brunneoradicata F. Ritter -- not accepted
  Rebutia cajasensis F. Ritter -- not accepted
  Rebutia cintiensis F. Ritter -- not accepted
  Rebutia colorea F. Ritter -- not accepted
  Rebutia eucaliptana (Backeb.) F. Ritter -- not accepted
  Rebutia flavistyla F. Ritter -- not accepted
  Rebutia fusca F. Ritter -- not accepted
  Rebutia gracilispina F. Ritter -- not accepted
  Rebutia iridescens F. Ritter -- not accepted
  Rebutia lanosiflora F. Ritter -- not accepted
  Rebutia mentosa (F. Ritter) Donald -- accepted
  Rebutia mentosa ssp. mentosa (F. Ritter) Donald -- accepted
  Rebutia minutissima F. Ritter -- not accepted
  Rebutia mixta F. Ritter -- not accepted
  Rebutia mixticolor F. Ritter -- not accepted
  Rebutia muscula F. Ritter & Thiele -- not accepted
  Rebutia neocumingii ssp. lanata (F. Ritter) D.R. Hunt -- accepted
  Rebutia neocumingii ssp. riograndensis (F. Ritter) D.R. Hunt -- not accepted
  Rebutia nitida F. Ritter -- not accepted
  Rebutia nogalesensis F. Ritter -- not accepted
  Rebutia odontopetala F. Ritter -- not accepted
  Rebutia orurensis (Backeb.) F. Ritter -- not accepted
  Rebutia patericalyx F. Ritter -- not accepted
  Rebutia pauciareolata F. Ritter -- not accepted
  Rebutia paucicostata F. Ritter -- not accepted
  Rebutia poecilantha F. Ritter -- not accepted
  Rebutia potosina F. Ritter -- not accepted
  Rebutia pulvinosa F. Ritter & Buining -- accepted
  Rebutia pulvinosa ssp. albiflora (F. Ritter & Buining) Hjertson -- accepted
  Rebutia pulvinosa ssp. pulvinosa F. Ritter & Buining -- 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 singularis F. Ritter -- not accepted
  Rebutia steinbachii ssp. verticillacantha (F. Ritter) D.R. Hunt -- accepted
  Rebutia tamboensis F. Ritter -- not accepted
  Rebutia tarvitaensis F. Ritter -- not accepted
  Rebutia torquata F. Ritter & Buining -- not accepted
  Rebutia tropaeolipicta F. Ritter -- not accepted
  Rebutia tuberosa F. Ritter -- not accepted
  Rebutia violascens F. Ritter -- not accepted
  Rebutia vulpina F. Ritter -- not accepted
  Rhipsalis alboareolata F. Ritter -- not accepted
  Rhipsalis clavellina F. Ritter -- not accepted
  Rhipsalis floccosa ssp. hohenauensis (F. Ritter) Barthlott & N.P. Taylor -- accepted
  Rhipsalis flosculosa F. Ritter -- not accepted
  Rhipsalis hohenauensis F. Ritter -- not accepted
  Rhipsalis hylaea F. Ritter -- not accepted
  Rhipsalis monteazulensis F. Ritter -- 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
  Submatucana formosa (F. Ritter) Backeb. -- not accepted
  Submatucana intertexta (F. Ritter) Backeb. -- not accepted
  Submatucana paucicostata (F. Ritter) Backeb. -- not accepted
  Sulcorebutia arenacea (Cárdenas) F. Ritter -- not accepted
  Sulcorebutia erinacea (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia glomeriseta (Cárdenas) F. Ritter -- not accepted
  Sulcorebutia krugerae (Cárdenas) F. Ritter -- not accepted
  Sulcorebutia lanata (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia lepida F. Ritter -- not accepted
  Sulcorebutia longigibba (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia mentosa F. Ritter -- not accepted
  Sulcorebutia multispina (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia riograndensis (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia ritteri (F.H. Brandt) F. Ritter -- not accepted
  Sulcorebutia sucrensis (F. Ritter) F.H. Brandt -- not accepted
  Sulcorebutia tarijensis F. Ritter -- not accepted
  Sulcorebutia tiraquensis (Cárdenas) F. Ritter -- not accepted
  Sulcorebutia verticillacantha F. Ritter -- not accepted
  Tacinga saxatilis (F. Ritter) N.P. Taylor & Stuppy -- accepted
  Tacinga saxatilis ssp. saxatilis (F. Ritter) N.P. Taylor & Stuppy -- accepted
  Tephrocactus coloreus F. Ritter -- not accepted
  Tephrocactus conoideus F. Ritter -- not accepted
  Tephrocactus echinaceus F. Ritter -- not accepted
  Tephrocactus multiareolatus F. Ritter -- 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 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 longispinus F. Ritter -- not accepted
  Thrixanthocereus senilis F. Ritter -- not accepted
  Trichocereus bruchii (Britton & Rose) F. Ritter -- not accepted
  Trichocereus catamarcensis F. Ritter -- not accepted
  Trichocereus caulescens F. Ritter -- not accepted
  Trichocereus clavatus F. Ritter -- not accepted
  Trichocereus eremophilus F. Ritter -- not accepted
  Trichocereus formosus (Pfeiff.) F. Ritter -- not accepted
  Trichocereus grandis (Britton & Rose) F. Ritter -- not accepted
  Trichocereus ingens (Backeb.) F. Ritter -- not accepted
  Trichocereus korethroides (Werderm.) F. Ritter -- not accepted
  Trichocereus quadratiumbonatus F. Ritter -- not accepted
  Trichocereus scopulicola F. Ritter -- not accepted
  Trichocereus smrzianus (Backeb.) F. Ritter -- not accepted
  Trichocereus tacnaensis F. Ritter -- not accepted
  Trichocereus tenuispinus F. Ritter -- not accepted
  Trichocereus torataensis F. Ritter -- not accepted
  Trichocereus totorensis (Cárdenas) F. Ritter -- not accepted
  Trichocereus volcanensis F. Ritter -- not accepted
  Tunilla chilensis (F. Ritter) D.R. Hunt & Iliff -- not accepted
  Tunilla ianthinantha (F. Ritter) D.R. Hunt & Iliff -- not accepted
  Weberbauerocereus albus F. Ritter -- accepted
  Weberbauerocereus cephalomacrostibas (Werderm. & Backeb.) F. Ritter -- accepted
  Weberbauerocereus churinensis F. Ritter -- accepted
  Weberbauerocereus johnsonii F. Ritter -- not accepted
  Weberbauerocereus longicomus F. Ritter -- not accepted
  Weberbauerocereus torataensis F. Ritter -- not accepted
  Weberbauerocereus winterianus F. Ritter -- accepted
  Weingartia buiningiana F. Ritter -- not accepted
  Weingartia erinacea F. Ritter -- not accepted
  Weingartia gracilispina F. Ritter -- not accepted
  Weingartia lanata F. Ritter -- not accepted
  Weingartia lanata ssp. longigibba (F. Ritter) Donald -- not accepted
  Weingartia lanata ssp. riograndensis (F. Ritter) Donald -- not accepted
  Weingartia lepida (F. Ritter) F.H. Brandt -- not accepted
  Weingartia longigibba F. Ritter -- not accepted
  Weingartia mentosa (F. Ritter) F.H. Brandt -- not accepted
  Weingartia multispina F. Ritter -- not accepted
  Weingartia pygmaea F. Ritter -- not accepted
  Weingartia riograndensis F. Ritter -- not accepted
  Weingartia sucrensis F. Ritter -- not accepted
  Wigginsia acuata (Link & Otto) F. Ritter -- not accepted
  Wigginsia courantii (Lem.) F. Ritter -- not accepted
  Wigginsia horstii F. Ritter -- not accepted
  Wigginsia leprosorum F. Ritter -- not accepted
  Wigginsia longispina F. Ritter -- not accepted
  Wigginsia polyacantha (Link & Otto) F. Ritter -- not accepted
  Wigginsia prolifera F. Ritter -- not accepted
  Wigginsia sellowii (Link & Otto) F. Ritter -- not accepted
  Yungasocereus F. Ritter -- accepted
  Yungasocereus inquisivensis (Cárdenas) F. Ritter -- accepted
  Zehntnerella chaetacantha F. Ritter -- not accepted
  Zehntnerella polygona F. Ritter -- not accepted
   

A gray bar