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Taxon author: L.D. Benson

ITIS records citing taxon author "L.D. Benson"
 
 Kingdom Plantae
  Acacia angustissima var. cuspidata (Schltdl.) L.D. Benson -- not accepted
  Acacia constricta var. vernicosa (Standl.) L.D. Benson -- not accepted
  Aloysia gratissima var. schulziae (Standl.) L.D. Benson -- accepted -- bee blossum, whitebrush
  Ancistrocactus crassihamatus (F.A.C. Weber) L.D. Benson -- 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
  Ancistrocactus uncinatus var. wrightii (Engelm.) L.D. Benson -- not accepted
  Arctostaphylos manzanita var. elegans (Jeps.) L.D. Benson -- not accepted
  Atriplex canescens var. garrettii (Rydb.) L.D. Benson -- not accepted
  Atriplex lentiformis var. griffithsii (Standl.) L.D. Benson -- not accepted
  Calliandra humilis var. reticulata (A. Gray) L.D. Benson -- accepted -- dwarf stickpea
  Celtis laevigata var. reticulata (Torr.) L.D. Benson -- not accepted -- netleaf hackberry
  Cereus eriophorus var. fragrans (Small ex Britton & Rose) L.D. Benson -- not accepted -- fragrant prickly-apple
  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 var. armatus (K. Schum.) L.D. Benson -- not accepted
  Cereus robinii (Lem.) L.D. Benson -- not accepted -- Key tree cactus
  Cereus robinii (Lem.) L.D. Benson -- not accepted
  Cereus robinii var. deeringii (Small) L.D. Benson -- not accepted -- Deering's tree cactus
  Cereus robinii var. keyensis (Britton & Rose) L.D. Benson -- not accepted
  Choisya dumosa var. arizonica (Standl.) L.D. Benson -- accepted -- Arizona orange, starleaf
  Choisya dumosa var. mollis (Standl.) L.D. Benson -- accepted -- Mexican orange, zorillo
  Colubrina texensis var. californica (I.M. Johnst.) L.D. Benson -- not accepted
  Coryphantha cornifera var. echinus (Engelm.) L.D. Benson -- not accepted -- rhinoceros cactus
  Coryphantha dasyacantha var. varicolor (Tiegel) L.D. Benson -- not accepted
  Coryphantha duncanii (Hester) L.D. Benson -- not accepted -- Duncan's cory cactus
  Coryphantha macromeris var. runyonii (Britton & Rose) L.D. Benson -- not accepted -- Runyon's beehive cactus
  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 robustispina ssp. uncinata (L.D. Benson) N.P. Taylor -- not accepted
  Coryphantha scheeri (Muehlenpf.) L.D. Benson -- not accepted -- beehive coryphantha, Biznaga-partida mula, Scheer's beehive cactus
  Coryphantha scheeri var. robustispina (A. Schott ex Engelm.) L.D. Benson -- not accepted -- longtubercle beehive cactus, Pima pineapple cactus
  Coryphantha scheeri var. scheeri (Muehlenpf.) L.D. Benson -- not accepted -- Scheer's beehive cactus
  Coryphantha scheeri var. uncinata L.D. Benson -- not accepted -- Scheer's beehive cactus
  Coryphantha scheeri var. valida (Engelm.) L.D. Benson -- not accepted -- pineapple cactus, Scheer's beehive cactus
  Coryphantha sneedii var. leei (Rose ex Boed.) L.D. Benson -- not accepted -- Lee pincushion cactus
  Coryphantha strobiliformis var. durispina (Quehl) L.D. Benson -- not accepted
  Coryphantha strobiliformis var. orcuttii (Boed.) L.D. Benson -- not accepted
  Coryphantha sulcata var. nickelsiae (K. Brandegee) L.D. Benson -- not accepted -- Nickels' cory cactus
  Coryphantha vivipara var. alversonii (J.M. Coult.) L.D. Benson -- not accepted -- Alverson's foxtail cactus
  Coryphantha vivipara var. bisbeeana (Orcutt) L.D. Benson -- not accepted
  Coryphantha vivipara var. rosea (Clokey) L.D. Benson -- not accepted
  Cylindropuntia acanthocarpa ssp. coloradensis (L.D. Benson) U. Guzmán -- accepted
  Cylindropuntia wigginsii (L.D. Benson) H. Rob. -- not accepted
  Cylindropuntia wolfii (L.D. Benson) M.A. Baker -- accepted
  Dalea fremontii var. minutifolia (Parish) L.D. Benson -- not accepted
  Dalea fremontii var. pubescens (Parish) L.D. Benson -- not accepted
  Dalea fremontii var. simplifolia (Parish) L.D. Benson -- not accepted
  Echinocactus horizonthalonius var. nicholii L.D. Benson -- not accepted -- Nichol's echinocactus, Nichols Turks head cactus
  Echinocactus mesae-verdae (Boissev. & C. Davidson) L.D. Benson -- not accepted
  Echinocactus peeblesianus (Croizat) L.D. Benson -- not accepted
  Echinocactus warnockii (L.D. Benson) D. Weniger -- not accepted
  Echinocactus whipplei var. intermedius (Peebles) L.D. Benson -- not accepted
  Echinocereus berlandieri var. angusticeps (Clover) L.D. Benson -- not accepted
  Echinocereus berlandieri var. papillosus (Linke ex Rümpler) L.D. Benson -- not accepted
  Echinocereus blankii var. angusticeps (Clover) L.D. Benson -- not accepted
  Echinocereus coccineus var. gurneyi (L.D. Benson) S. Brack & K.D. Heil -- accepted -- Gurney's hedgehog cactus, strawberry cactus
  Echinocereus engelmannii var. acicularis L.D. Benson -- accepted -- Engelmann's hedgehog cactus, needle hedgehog cactus
  Echinocereus engelmannii var. armatus L.D. Benson -- accepted -- Engelmann's hedgehog cactus, Saint's cactus
  Echinocereus engelmannii var. decumbens (Clover & Jotter) L.D. Benson -- not accepted
  Echinocereus engelmannii var. howei L.D. Benson -- not accepted -- Howe's cactus, Howe's hedgehog cactus
  Echinocereus engelmannii var. nicholii L.D. Benson -- not accepted
  Echinocereus engelmannii var. purpureus L.D. Benson -- not accepted -- Engelmann's hedgehog cactus, purple-spined hedgehog cactus
  Echinocereus enneacanthus var. brevispinus (W.O. Moore) L.D. Benson -- not accepted -- pitaya
  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-pequeńo de manojos
  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 var. bonkerae (Thornber & Bonker) L.D. Benson -- not accepted -- pinkflower hedgehog cactus
  Echinocereus fendleri var. boyce-thompsonii (Orcutt) L.D. Benson -- not accepted -- Boyce Thompson hedgehog cactus
  Echinocereus fendleri var. kuenzleri (Castetter, P. Pierce & K.H. Schwer.) L.D. Benson -- not accepted -- Kuenzler's hedgehog cactus
  Echinocereus fendleri var. rectispinus (Peebles) L.D. Benson -- not accepted -- pinkflower hedgehog cactus, right-angled spine hedgehog
  Echinocereus fendleri var. retispinus (Peebles) L.D. Benson -- not accepted
  Echinocereus fendleri var. robustus (Peebles) L.D. Benson -- not accepted
  Echinocereus munzii (Parish) L.D. Benson -- not accepted
  Echinocereus nicholii (L.D. Benson) B.D. Parfitt -- accepted -- Nichol's hedgehog cactus
  Echinocereus nicholii ssp. nicholii (L.D. Benson) B.D. Parfitt -- not accepted
  Echinocereus pectinatus ssp. wenigeri (L.D. Benson) W. Blum & Rutow -- accepted
  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. wenigeri L.D. Benson -- not accepted -- Weniger's cactus, Weniger's hedgehog cactus
  Echinocereus polyacanthus var. neomexicanus (Standl.) L.D. Benson -- 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. fitchii (Britton & Rose) L.D. Benson -- not accepted -- Fitch's hedgehog cactus
  Echinocereus reichenbachii var. perbellus (Britton & Rose) L.D. Benson -- accepted -- lace hedgehog cactus
  Echinocereus reichenbachii var. robustus (Peebles) L.D. Benson -- not accepted
  Echinocereus triglochidiatus var. arizonicus (Rose ex Orcutt) L.D. Benson -- not accepted -- Arizona hedgehog cactus
  Echinocereus triglochidiatus var. gurneyi L.D. Benson -- not accepted
  Echinocereus triglochidiatus var. melanacanthus (Engelm. ex A. Gray) L.D. Benson -- not accepted
  Echinocereus triglochidiatus var. mojavensis (Engelm. & J.M. Bigelow) L.D. Benson -- not accepted -- Mohave hedgehog cactus, Mojave kingcup cactus
  Echinocereus triglochidiatus var. polyacanthus (Engelm.) L.D. Benson -- not accepted
  Echinocereus viridiflorus ssp. correllii (L.D. Benson) W. Blum & Mich. Lange -- accepted
  Echinocereus viridiflorus var. correllii L.D. Benson -- not accepted -- Correll's hedgehog cactus
  Echinomastus gautii (L.D. Benson) Mosco & Zanov. -- not accepted
  Echinomastus warnockii (L.D. Benson) Glass & R.A. Foster -- not accepted
  Ephedra californica var. funerea (Coville & Morton) L.D. Benson -- not accepted
  Ephedra nevadensis var. aspera (Engelm. ex S. Watson) L.D. Benson -- not accepted
  Ephedra viridis var. viscida (Cutler) L.D. Benson -- not accepted
  Epithelantha bokei L.D. Benson -- accepted -- Biznaga-blanca de Boquillas, Boke's button cactus
  Epithelantha micromeris var. bokei (L.D. Benson) Glass & Foster -- not accepted -- pingpong ball cactus
  Fagonia californica var. laevis (Standl.) L.D. Benson -- not accepted
  Fagonia californica var. longipes (Standl.) L.D. Benson -- not accepted
  Ferocactus acanthodes var. eastwoodiae L.D. Benson -- not accepted
  Ferocactus cylindraceus ssp. eastwoodiae (L.D. Benson) N.P. Taylor -- accepted
  Ferocactus eastwoodiae (L.D. Benson) L.D. Benson -- not accepted
  Ferocactus hamatacanthus var. sinuatus (A. Dietr.) L.D. Benson -- not accepted -- Turk's head
  Ferocactus setispinus (Engelm.) L.D. Benson -- not accepted
  Ferocactus wrightiae (L.D. Benson) N.P. Taylor -- not accepted
  Gutierrezia sarothrae var. microcephala (DC.) L.D. Benson -- not accepted
  Haplophyton cimicidum var. crooksii L.D. Benson -- accepted -- cockroachplant
  Haplophyton crooksii (L.D. Benson) L.D. Benson -- not accepted -- cockroachplant
  Hymenoclea salsola var. pentalepis (Rydb.) L.D. Benson -- not accepted -- burrobrush, white burrobrush
  Juglans microcarpa var. major (Torr.) L.D. Benson -- not accepted
  Juniperus californica var. osteosperma (Torr.) L.D. Benson -- not accepted
  Justicia candicans (Nees) L.D. Benson -- accepted -- Arizona water-willow, jacobina
  Justicia candicans var. subglabra (S. Watson) L.D. Benson -- not accepted
  Larrea tridentata var. arenaria L.D. Benson -- not accepted -- creosote bush
  Lophochlaena californica var. davyi (L.D. Benson) Á. Löve & D. Löve -- not accepted
  Lophochlaena californica var. davyi (L.D. Benson) Á. Löve & D. Löve -- not accepted -- Davy's semaphoregrass
  Lophochlaena refracta var. hooveriana (L.D. Benson) Á. Löve & D. Löve -- not accepted
  Lophochlaena refracta var. hooverianus (L.D. Benson) Á. Löve & D. Löve -- not accepted -- North Coast semaphoregrass
  Lophochlaena refracta var. hooverianus (L.D. Benson) Á. Löve & D. Löve -- not accepted
  Mammillaria grahamii var. oliviae (Orcutt) L.D. Benson -- not accepted -- Graham's nipple cactus, olive pincushion cactus
  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 heyderi var. gummifera (Engelm.) L.D. Benson -- not accepted
  Mammillaria heyderi var. macdougalii (Rose) L.D. Benson -- not accepted -- Macdougal's nipple cactus, Macdougal's pincushion cactus
  Mammillaria heyderi var. meiacantha (Engelm.) L.D. Benson -- not accepted -- little nipple cactus
  Mammillaria orestera L.D. Benson -- not accepted
  Mammillaria vivipara var. arizonica (Engelm.) L.D. Benson -- not accepted
  Nemacaulis denudata var. gracilis Goodman & L.D. Benson -- accepted -- cottonheads
  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 mariposensis (Hester) L.D. Benson -- not accepted -- Lloyd's Mariposa cactus
  Neolloydia unguispina (Engelm.) L.D. Benson -- not accepted
  Neolloydia warnockii L.D. Benson -- not accepted
  Nolina bigelovii var. parryi (S. Watson) L.D. Benson -- not accepted
  Nolina bigelovii var. wolfii (Munz) L.D. Benson -- not accepted
  Opuntia acanthocarpa var. coloradensis L.D. Benson -- not accepted -- Colorado buckhorn cholla
  Opuntia acanthocarpa var. ganderi (C.B. Wolf) L.D. Benson -- not accepted -- Gander's buckhorn cholla
  Opuntia acanthocarpa var. major (Engelm. & J.M. Bigelow) L.D. Benson -- not accepted -- buckhorn cholla, slender joint buckhorn cholla
  Opuntia acanthocarpa var. thornberi (Thornber & Bonker) L.D. Benson -- not accepted -- Thornber's buckhorn cholla
  Opuntia basilaris var. longiareolata (Clover & Jotter) L.D. Benson -- accepted -- beavertail pricklypear, Grand Canyon beavertail cactus
  Opuntia compressa var. ammophila (Small) L.D. Benson -- not accepted
  Opuntia compressa var. austrina (Small) L.D. Benson -- not accepted
  Opuntia compressa var. macrorhiza (Engelm.) L.D. Benson -- not accepted
  Opuntia compressa var. microsperma (Engelm.) L.D. Benson -- not accepted
  Opuntia echinocarpa var. wolfii L.D. Benson -- not accepted
  Opuntia engelmannii var. flavispina (L.D. Benson) B.D. Parfitt & Pinkava -- accepted -- cactus apple, Engelmann's pricklypear
  Opuntia erinacea var. columbiana (Griffiths) L.D. Benson -- not accepted -- grizzlybear pricklypear
  Opuntia erinacea var. hystricina (Engelm. & J.M. Bigelow) L.D. Benson -- not accepted -- grizzlybear pricklypear, porcupine pricklypear
  Opuntia erinacea var. utahensis (Engelm.) L.D. Benson -- not accepted -- Utah grizzlybear pricklypear, Utah pricklypear
  Opuntia erinacea var. xanthostemma (K. Schum. ex Hirscht-Zehl.) L.D. Benson -- not accepted
  Opuntia humifusa var. ammophila (Small) L.D. Benson -- accepted -- devil's-tongue
  Opuntia lindheimeri var. cuija (Griffiths & Hare) L.D. Benson -- 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 littoralis var. austrocalifornica L.D. Benson & Walk. -- accepted -- coastal pricklypear
  Opuntia littoralis var. martiniana (L.D. Benson) L.D. Benson -- not accepted
  Opuntia littoralis var. piercei (Fosberg) L.D. Benson & Walk. -- accepted -- coastal pricklypear
  Opuntia littoralis var. vaseyi (J.M. Coult.) L.D. Benson & Walk. -- not accepted -- coastal pricklypear, Vasey's coastal pricklypear
  Opuntia macrocentra var. martiniana L.D. Benson -- not accepted
  Opuntia macrorhiza var. pottsii (Salm-Dyck) L.D. Benson -- not accepted -- grassland pricklypear, Potts pricklypear cactus, twistspine pricklypear
  Opuntia martiniana (L.D. Benson) B.D. Parfitt -- not accepted -- coastal pricklypear, seashore cactus
  Opuntia nicholii L.D. Benson -- accepted -- Navajo Bridge pricklypear
  Opuntia parryi var. serpentina (Engelm.) L.D. Benson -- not accepted -- serpentine cholla, snake cholla
  Opuntia phaeacantha var. camanchica (Engelm. & J.M. Bigelow) L.D. Benson -- accepted -- brownspine pricklypear, tulip pricklypear
  Opuntia phaeacantha var. discata (Griffiths) L.D. Benson & Walk. -- not accepted
  Opuntia phaeacantha var. flavispina L.D. Benson -- not accepted
  Opuntia phaeacantha var. laevis (J.M. Coult.) L.D. Benson -- accepted -- smooth pricklypear, tulip pricklypear
  Opuntia phaeacantha var. spinosibacca (M.S. Anthony) L.D. Benson -- not accepted
  Opuntia phaeacantha var. superbospina (Griffiths) L.D. Benson -- not accepted
  Opuntia phaeacantha var. wootonii (Griffiths) L.D. Benson -- not accepted -- Wooton's pricklypear
  Opuntia polyacantha var. juniperina (Britton & Rose) L.D. Benson -- accepted -- Juniper pricklypear
  Opuntia polyacantha var. nicholii (L.D. Benson) B.D. Parfitt -- accepted
  Opuntia polyacantha var. rufispina (Engelm. & J.M. Bigelow ex Engelm.) L.D. Benson -- accepted -- hairspine pricklypear, plains pricklypear, red-spine pricklypear
  Opuntia schottii var. grahamii (Engelm.) L.D. Benson -- 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 stricta var. dillenii (Ker Gawl.) L.D. Benson -- accepted -- erect pricklypear
  Opuntia strigil var. flexospina (Griffiths) L.D. Benson -- not accepted
  Opuntia tunicata var. davisii (Engelm. & J.M. Bigelow) L.D. Benson -- not accepted -- Jeff Davis cholla, thistle cholla
  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 whipplei var. multigeniculata (Clokey) L.D. Benson -- not accepted -- blue diamond cholla, rattail cholla
  Opuntia whipplei var. viridiflora (Britton & Rose) L.D. Benson -- not accepted
  Opuntia wigginsi L.D. Benson -- not accepted
  Opuntia wigginsii L.D. Benson -- not accepted -- Wiggin's cholla, Wiggins' cholla
  Opuntia wolfei (L.D. Benson) M.A. Baker -- not accepted
  Opuntia wolfii (L.D. Benson) M.A. Baker -- not accepted -- Wolf's opuntia
  Pediocactus bradyi L.D. Benson -- accepted -- Brady's hedgehog cactus, Brady's pediocactus, Brady's pincushion cactus
  Pediocactus bradyi ssp. bradyi L.D. Benson -- not accepted
  Pediocactus gautii (L.D. Benson) Halda -- not accepted
  Pediocactus knowltonii L.D. Benson -- accepted -- Knowlton's cactus, Knowlton's miniature cactus
  Pediocactus papyracanthus (Engelm.) L.D. Benson -- not accepted -- paper-spined cactus
  Pediocactus peeblesianus (Croizat) L.D. Benson -- accepted -- Navajo pincushion cactus, Peebles' Navajo cactus, Peebles' pediocactus
  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 plains cactus, Fickeisen's pediocactus, Navajo pincushion cactus
  Pediocactus peeblesianus var. fickeisenii (Backeb.) L.D. Benson -- not accepted
  Pediocactus peeblesianus var. maianus L.D. Benson -- accepted -- Navajo pincushion cactus
  Pediocactus peeblesianus var. peeblesianus (Croizat) L.D. Benson -- not accepted -- Navajo pincushion cactus, Peebles Navajo cactus
  Pediocactus sileri (Engelm. ex J.M. Coult.) L.D. Benson -- accepted -- Siler's pincushion cactus
  Pediocactus simpsonii ssp. bradyi (L.D. Benson) Halda -- not accepted
  Pediocactus simpsonii var. knowltonii (L.D. Benson) Halda -- not accepted
  Pediocactus simpsonii var. robustior (J.M. Coult.) L.D. Benson -- not accepted -- snowball cactus
  Pediocactus warnockii (L.D. Benson) Halda -- not accepted
  Pediocactus wrightiae (L.D. Benson) Arp -- not accepted
  Petalonyx thurberi var. gilmanii (Munz) L.D. Benson -- not accepted
  Phoradendron tomentosum var. macrophyllum (Engelm.) L.D. Benson -- not accepted
  Platanus racemosa var. wiightii (S. Watson) L.D. Benson -- not accepted
  Platanus racemosa var. wrightii (S. Watson) L.D. Benson -- not accepted
  Pleuropogon californicus var. davyi (L.D. Benson) But -- accepted -- annual semaphoregrass
  Pleuropogon davyi L.D. Benson -- not accepted
  Pleuropogon hooverianus (L.D. Benson) J.T. Howell -- accepted -- North Coast semaphoregrass
  Pleuropogon refractus var. hooverianus L.D. Benson -- not accepted
  Prosopis glandulosa var. torreyana (L.D. Benson) M.C. Johnst. -- accepted -- western honey mesquite
  Prosopis juliflora var. torreyana L.D. Benson -- not accepted
  Quercus turbinella var. californica (J.M. Tucker) L.D. Benson -- not accepted
  Ranunculus acriformis var. aestivalis L.D. Benson -- accepted -- Autumn buttercup, fall buttercup, sharpleaf buttercup
  Ranunculus acriformis var. montanensis (Rydb.) L.D. Benson -- accepted -- mountain sharp buttercup
  Ranunculus acriformis var. typicus L.D. Benson -- not accepted
  Ranunculus acris var. aestivalis (L.D. Benson) S.L. Welsh -- not accepted
  Ranunculus adoneus var. alpinus (S. Watson) L.D. Benson -- not accepted -- alpine buttercup
  Ranunculus adoneus var. typicus L.D. Benson -- not accepted
  Ranunculus aestivalis (L.D. Benson) Van Buren & K.T. Harper -- not accepted -- fall buttercup
  Ranunculus alismifolius var. davisii L.D. Benson -- accepted -- Davis' buttercup
  Ranunculus alismifolius var. lemmonii (A. Gray) L.D. Benson -- accepted -- plantainleaf buttercup
  Ranunculus alismifolius var. typicus L.D. Benson -- not accepted
  Ranunculus aquatilis var. calvescens (W.B. Drew) L.D. Benson -- not accepted
  Ranunculus aquatilis var. harrisii L.D. Benson -- not accepted
  Ranunculus aquatilis var. lalondei L.D. Benson -- not accepted
  Ranunculus aquatilis var. porteri (Britton) L.D. Benson -- not accepted
  Ranunculus aquatilis var. typicus L.D. Benson -- not accepted
  Ranunculus arizonicus var. typicus L.D. Benson -- not accepted
  Ranunculus austro-oreganus L.D. Benson -- accepted -- Southern Oregon buttercup
  Ranunculus austrooreganus L.D. Benson -- not accepted -- Southern Oregon buttercup
  Ranunculus californicus var. austromontanus L.D. Benson -- not accepted
  Ranunculus californicus var. rugulosus (Greene) L.D. Benson -- not accepted
  Ranunculus californicus var. typicus L.D. Benson -- not accepted
  Ranunculus canus var. laetus (Greene) L.D. Benson -- not accepted
  Ranunculus canus var. ludovicianus (Greene) L.D. Benson -- accepted
  Ranunculus canus var. typicus L.D. Benson -- not accepted
  Ranunculus cardiophyllus var. coloradensis L.D. Benson -- not accepted
  Ranunculus cardiophyllus var. subsagittatus (A. Gray) L.D. Benson -- not accepted
  Ranunculus cardiophyllus var. typicus L.D. Benson -- not accepted
  Ranunculus circinatus var. subrigidus (W.B. Drew) L.D. Benson -- not accepted
  Ranunculus coloradensis (L.D. Benson) L.D. Benson -- not accepted -- Colorado buttercup
  Ranunculus cymbalaria var. typicus L.D. Benson -- not accepted
  Ranunculus eastwoodianus L.D. Benson -- not accepted -- Eastwood's buttercup
  Ranunculus eschscholtzii var. eximius (Greene) L.D. Benson -- accepted -- tundra buttercup
  Ranunculus eschscholtzii var. hultenianus L.D. Benson -- accepted -- Hulten's buttercup
  Ranunculus eschscholtzii var. suksdorfii (A. Gray) L.D. Benson -- accepted -- Suksdorf's buttercup
  Ranunculus eschscholtzii var. trisectus (Eastw.) L.D. Benson -- accepted -- threesection buttercup
  Ranunculus eschscholtzii var. typicus L.D. Benson -- not accepted
  Ranunculus fascicularis var. cuneiformis (Small) L.D. Benson -- not accepted -- Kerr crowfoot
  Ranunculus fascicularis var. typicus L.D. Benson -- not accepted
  Ranunculus flammula var. ovalis (Bigelow) L.D. Benson -- accepted
  Ranunculus flammula var. samolifolius (Greene) L.D. Benson -- not accepted
  Ranunculus glaberrimus var. reconditus L.D. Benson -- not accepted -- sagebrush buttercup
  Ranunculus glaberrimus var. typicus L.D. Benson -- not accepted
  Ranunculus glacialis var. camissonis (Schltdl.) L.D. Benson -- accepted -- glacier buttercup
  Ranunculus glacialis var. chamissonis (Schltdl.) L.D. Benson -- not accepted -- glacier buttercup
  Ranunculus gmelini var. hookeri (D. Don) L.D. Benson -- not accepted
  Ranunculus gmelinii var. hookeri (D. Don) L.D. Benson -- not accepted
  Ranunculus gmelinii var. terrestris (Ledeb.) L.D. Benson -- not accepted
  Ranunculus gmelinii var. typicus L.D. Benson -- not accepted
  Ranunculus harveyi var. australis (Brandegee) L.D. Benson -- accepted
  Ranunculus harveyi var. typicus L.D. Benson -- not accepted
  Ranunculus hexasepalus (L.D. Benson) L.D. Benson -- not accepted -- Queen Charlotte Island buttercup
  Ranunculus hispidus var. eurylobus L.D. Benson -- not accepted
  Ranunculus hispidus var. greenmanii L.D. Benson -- not accepted
  Ranunculus hispidus var. marilandicus (Poir.) L.D. Benson -- not accepted
  Ranunculus hispidus var. typicus L.D. Benson -- not accepted
  Ranunculus hydrocharoides var. natans (Nees ex G. Don) L.D. Benson -- not accepted
  Ranunculus hydrocharoides var. stolonifer (Hemsl.) L.D. Benson -- not accepted -- frogbit buttercup
  Ranunculus hydrocharoides var. typicus L.D. Benson -- not accepted
  Ranunculus inamoenus var. alpeophilus (A. Nelson) L.D. Benson -- not accepted -- graceful buttercup
  Ranunculus inamoenus var. subaffinis (A. Gray) L.D. Benson -- accepted -- graceful buttercup
  Ranunculus inamoenus var. typicus L.D. Benson -- not accepted
  Ranunculus laxicaulis var. angustifolia (Engelm.) L.D. Benson -- not accepted
  Ranunculus laxicaulis var. angustifolius (Engelm.) L.D. Benson -- not accepted
  Ranunculus laxicaulis var. mississippiensis (Small) L.D. Benson -- not accepted
  Ranunculus macauleyi var. brandegeei L.D. Benson -- not accepted -- Brandegee's buttercup
  Ranunculus macauleyi var. typicus L.D. Benson -- not accepted
  Ranunculus macranthus var. arsenei L.D. Benson -- not accepted
  Ranunculus macranthus var. typicus L.D. Benson -- not accepted
  Ranunculus natans var. intertextus (Greene) L.D. Benson -- not accepted
  Ranunculus natans var. typicus L.D. Benson -- not accepted
  Ranunculus occidentalis var. hexasepalus L.D. Benson -- accepted -- western buttercup
  Ranunculus occidentalis var. nelsonii (DC.) L.D. Benson -- accepted -- Nelson's buttercup
  Ranunculus occidentalis var. turneri (Greene) L.D. Benson -- not accepted
  Ranunculus occidentalis var. typicus L.D. Benson -- not accepted
  Ranunculus oresterus L.D. Benson -- accepted -- Blue Mountain buttercup
  Ranunculus orthorhynchus ssp. alaschensis (L.D. Benson) Hultén -- not accepted
  Ranunculus orthorhynchus var. alaschensis L.D. Benson -- not accepted
  Ranunculus orthorhynchus var. bloomeri (S. Watson) L.D. Benson -- accepted -- Bloomer's buttercup
  Ranunculus orthorhynchus var. typicus L.D. Benson -- not accepted
  Ranunculus pacificus (Hultén) L.D. Benson -- accepted -- Pacific buttercup
  Ranunculus pedatifidus var. affinis (R. Br.) L.D. Benson -- accepted -- northern buttercup
  Ranunculus petiolaris var. arsenei (L.D. Benson) T. Duncan -- not accepted -- Arsene's buttercup
  Ranunculus pusillus var. angustifolius (Engelm.) L.D. Benson -- not accepted -- low spearwort
  Ranunculus pusillus var. typicus L.D. Benson -- not accepted
  Ranunculus recurvatus var. typicus L.D. Benson -- not accepted
  Ranunculus sceleratus var. typicus L.D. Benson -- not accepted
  Ranunculus septentrionalis var. pterocarpus L.D. Benson -- not accepted
  Ranunculus uncinatus var. earlei (Greene) L.D. Benson -- not accepted -- Earle's buttercup
  Ranunculus uncinatus var. parviflorus (Torr.) L.D. Benson -- not accepted -- Idaho buttercup
  Ranunculus uncinatus var. typicus L.D. Benson -- not accepted
  Rhus virens var. choriophylla (Wooton & Standl.) L.D. Benson -- accepted -- evergreen sumac, Mearns' sumac
  Salvia carnosa var. gilmanii (Epling) L.D. Benson -- not accepted
  Sambucus caerulea var. mexicana (C. Presl ex DC.) L.D. Benson -- not accepted
  Sambucus cerulea var. mexicana (C. Presl ex DC.) L.D. Benson -- not accepted
  Sapindus saponaria var. drummondii (Hook. & Arn.) L.D. Benson -- accepted -- western soapberry
  Sclerocactus glaucus (K. Schum.) L.D. Benson -- accepted -- Colorado hookless cactus, Uinta Basin hookless cactus
  Sclerocactus mesae-verdae (Boissev. & C. Davidson) L.D. Benson -- accepted -- Mesa Verde cactus, Mesa Verde fishhook cactus
  Sclerocactus parviflorus var. intermedius (Peebles) D. Woodruff & L.D. Benson -- not accepted -- intermediate fishhook cactus
  Sclerocactus pubispinus (Engelm.) L.D. Benson -- accepted -- Great Basin fishhook cactus
  Sclerocactus pubispinus var. pubispinus (Engelm.) L.D. Benson -- not accepted
  Sclerocactus pubispinus var. sileri L.D. Benson -- not accepted
  Sclerocactus sileri (L.D. Benson) K.D. Heil & J.M. Porter -- accepted
  Sclerocactus spinosior (Engelm.) D. Woodruff & L.D. Benson -- accepted -- desert valley fish-hook cactus, desert valley fishhook cactus
  Sclerocactus spinosior ssp. spinosior (Engelm.) D. Woodruff & L.D. Benson -- not accepted
  Sclerocactus warnockii (L.D. Benson) N.P. Taylor -- accepted -- Biznaga-bola amarilla, Warnock's fishhook cactus
  Sclerocactus whipplei var. intermedius (Peebles) L.D. Benson -- not accepted
  Sclerocactus whipplei var. roseus (Clover) L.D. Benson -- not accepted
  Sclerocactus wrightiae L.D. Benson -- accepted -- Wright's fishhook cactus
  Senecio douglasii var. longilobus (Benth.) L.D. Benson -- not accepted
  Toumeya bradyi (L.D. Benson) W.H. Earle -- not accepted
  Trifolium willdenovii var. longicaule (Wooton & Standl.) L.D. Benson -- not accepted
  Trifolium willdenowii var. longicaule (Wooton & Standl.) L.D. Benson -- not accepted
  Trifolium wormskioldii var. longicaule (Wooton & Standl.) L.D. Benson -- not accepted
  Turbinicarpus gautii (L.D. Benson) A.D. Zimmerman -- not accepted -- Biznaga-cono invertido plateada, top cactus
  Yucca baccata var. brevifolia L.D. Benson & Darrow -- accepted -- Spanish dagger
   

A gray bar