ITIS Taxon Author Search results citing "Torr."

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Taxon author: Torr.

ITIS records citing taxon author "Torr."


Kingdom Animalia
	Abietinaria traski (Torrey, 1902) -- valid
	Acalypta lillianis Torre-Bueno, 1916 -- valid
	Achillas Torre Bueno, 1914 -- valid
	Achillas bicaudatus Torre Bueno, 1914 -- valid
	Acuticephala Torres, 1958 -- valid
	Acuticephala alipuncta Torres, 1958 -- valid
	Acyroneura Torres, 1958 -- valid
	Acyroneura singularis Torres, 1958 -- valid
	Aenictus gibbosus Dalla Torre, 1893 -- valid
	Aenictus gibbosus gibbosus Dalla Torre, 1893 -- valid
	Aglaophenia diegensis Torrey, 1904 -- valid
	Aglaophenia inconspicua Torrey, 1904 -- valid
	Alarcta Torres, 1958 -- valid
	Alarcta albicerata (Torres, 1949) -- valid
	Alarcta bahiensis (Torres, 1942) -- valid
	Alarcta blanchardi (Torres, 1948) -- valid
	Alarcta macrogina (Torres, 1949) -- valid
	Alarcta minuta (Torres, 1949) -- valid
	Alarcta quadrimacula Torres, 1958 -- valid
	Alarcta terrosa Torres, 1958 -- valid
	Alsodes cantillanensis Charrier, Correa-Quezada, Castro and Méndez-Torres, 2015 -- valid
	Alyssontini Dalla Torre, 1897 -- valid
	Amegilla custos (Dalla Torre, 1896) -- valid
	Amegilla gallica (Dalla Torre & Friese, 1895) -- invalid
	Ammophila guerinii Dalla Torre, 1897 -- invalid
	Ammophila indica Dalla Torre, 1897 -- invalid
	Ammophila turcestanica Dalla Torre, 1897 -- invalid
	Ammophila walkeri Dalla Torre, 1897 -- invalid
	Andrena canadensis Dalla Torre, 1896 -- valid
	Andrena canadensis canadensis Dalla Torre, 1896 -- invalid
	Andrena gwynana testacea Dalla Torre, 1877 -- invalid
	Andrena interrogationis Dalla Torre, 1884 -- invalid
	Andrena lepeletieri Dalla Torre, 1896 -- invalid
	Andrena radoszkowski Dalla Torre, 1896 -- invalid
	Andrena radoszkowskii Dalla Torre, 1896 -- invalid
	Andrena robertsonii Dalla Torre, 1896 -- valid
	Anilios centralis (Storr, 1984) -- valid -- Centralian Blind Snake
	Anilios hamatus (Storr, 1981) -- valid -- Pale-headed Blind Snake
	Anilios howi (Storr, 1983) -- valid -- Kimberley Deep-soil Blind Snake
	Anilios kimberleyensis (Storr, 1981) -- valid -- Kimberley Shallow-soil Blind Snake
	Anilios margaretae (Storr, 1981) -- valid -- Buff-snouted Blind Snake
	Anilios micromma (Storr, 1981) -- valid -- Small-eyed Blind Snake
	Anilios micrommus (Storr, 1981) -- invalid
	Anilios troglodytes (Storr, 1981) -- valid -- Sandamara Blind Snake
	Anilios yampiensis (Storr, 1981) -- valid -- Yampi Blind Snake
	Anolis peruensis Poe, Latella, Ayala-Varela, Yañez-Miranda and Torres-Carvajal, 2015 -- valid
	Anolis podocarpus Ayala-Varela and Torres-Carvajal, 2010 -- valid
	Anolis poei Ayala-Varela, Troya-Rodriguez, Talero-Rodriguez and Torres-Carvajal, 2014 -- valid -- Telimbela Anole
	Antennella avalonia Torrey, 1902 -- valid
	Anthidium orizabae Dalla Torre, 1890 -- valid
	Anthodioctes indescriptus (Dalla Torre, 1890) -- valid
	Anthophora aegyptiaca (Dalla Torre & Friese, 1895) -- valid
	Anthophora angolensis (Dalla Torre, 1896) -- valid
	Anthophora eversmannii (Dalla Torre & Friese, 1895) -- valid
	Anthophora saropodoides (Dalla Torre, 1896) -- valid
	Anthrena americana Dalla Torre, 1896 -- invalid
	Anthrena clypeolata Dalla Torre, 1896 -- invalid
	Anthrena commixta Dalla Torre and Friese, 1895 -- invalid
	Anthrena meridionalis Dalla Torre and Friese, 1895 -- invalid
	Anthrena provancheri Dalla Torre, 1896 -- invalid
	Anthrena scutellata Dalla Torre, 1896 -- invalid
	Aphaenogaster gibbosa mauritanica Dalla Torre, 1893 -- valid
	Aphodius bistrigatus Dalla Torre, 1879 -- invalid
	Aphodius griseus Dalla Torre, 1879 -- invalid
	Aphodius lineatus Dalla Torre, 1879 -- invalid
	Aphodius melancholicus Dalla Torre, 1879 -- invalid
	Aphodius rufotestaceus Dalla Torre, 1879 -- invalid
	Aphodius thoracicus Dalla Torre, 1879 -- invalid
	Aphodius unicolor Dalla Torre, 1879 -- invalid
	Aprasia fusca Storr, 1979 -- valid
	Aprasia haroldi Storr, 1978 -- valid
	Aprasia smithi Storr, 1970 -- valid
	Arhyssus hirtus (Torre-Bueno, 1912) -- valid
	Atractus avernus Passos, Chiesse, Torres-Carvajal and Savage, 2009 -- valid
	Atractus savagei Salazar-Valenzuela, Torres-Carvajal and Passos, 2014 -- valid -- Savage's Groundsnake
	Belomicrus radoszkowskyi (Dalla Torre, 1897) -- valid
	Bimeria franciscana Torrey, 1902 -- valid
	Bimeria robusta Torrey, 1902 -- valid
	Bombus trinominatus Dalla Torre, 1890 -- valid
	Botruanthus benedeni (Torrey and Kleeburger, 1909) -- valid
	Bougainvillia glorietta Torrey, 1904 -- valid
	Brachyaspis atriceps Storr, 1980 -- invalid
	Brachyurophis incinctus (Storr, 1968) -- valid -- Unbanded Shovel-nosed Snake
	Bracon nitidulus Dalla Torre, 1883 -- valid
	Buenoa margaritacea Torre-Bueno, 1908 -- valid
	Calliopsida Torres, 1958 -- valid
	Campalecium Torrey, 1902 -- valid
	Campalecium medusiferum Torrey, 1902 -- valid
	Camponotus alii concolor Dalla Torre, 1893 -- valid
	Camponotus fasciatellus Dalla Torre, 1892 -- valid
	Camponotus fellah Dalla Torre, 1893 -- valid
	Camponotus hova hovoides Dalla Torre, 1893 -- valid
	Camponotus hova mixtellus Dalla Torre, 1893 -- valid
	Camponotus jaliensis Dalla Torre, 1893 -- valid
	Camponotus jaliensis jaliensis Dalla Torre, 1893 -- valid
	Camponotus maculatus sylvaticomaculatus Dalla Torre, 1893 -- valid
	Camponotus oertzeni andrius Dalla Torre, 1893 -- valid
	Camponotus oertzeni kappariensis Dalla Torre, 1893 -- valid
	Camponotus sanctaefidei Dalla Torre, 1892 -- valid
	Camponotus sanctaefidei sanctaefidei Dalla Torre, 1892 -- valid
	Camponotus variegatus dulcis Dalla Torre, 1893 -- valid
	Camponotus variegatus fuscithorax Dalla Torre, 1893 -- valid
	Carineta crassicauda Torres, 1948 -- valid
	Carineta limpida Torres, 1948 -- valid
	Carineta liturata Torres, 1948 -- valid
	Carineta maculosa Torres, 1948 -- valid
	Carineta propinqua Torres, 1948 -- valid
	Carineta scripta Torres, 1948 -- valid
	Ceracis thoracicus Dalla Torre, 1911 -- invalid
	Ceraphron tertius Dalla Torre, 1898 -- valid
	Ceraphron thomsoni Dalla Torre, 1890 -- valid
	Cerceris dichroa Dalla Torre, 1890 -- invalid
	Cerceris marginula Dalla Torre, 1897 -- valid
	Cerceris nevadensis Dalla Torre, 1890 -- invalid
	Cerceris provancheri Dalla Torre, 1890 -- invalid
	Cerceris rufinodula Dalla Torre, 1897 -- invalid
	Cerceris smithii Dalla Torre, 1897 -- invalid
	Cerion sculptum marielinum Torre, 1927 -- valid
	Cerrophidion petlalcalensis Lopéz-Luna, Vogt and Torre-Loranca, 1999 -- valid
	Charinus rocamadre Torres-Contreras, Álvarez García and Armas, 2015 -- valid
	Charisea Torrey, 1902 -- valid
	Charisea saxicola Torrey, 1902 -- valid -- Alaskan anemone
	Chonosia atrodorsalis Torres, 1945 -- valid
	Chonosia trigonocelis Torres, 1945 -- valid
	Cis caseyi Dalla Torre, 1911 -- invalid
	Cis ephippium Dalla Torre, 1911 -- invalid
	Cis insulicola Dalla Torre, 1911 -- valid
	Cis krausi Dalla Torre, 1911 -- valid
	Cis levellei Dalla Torre, 1911 -- invalid
	Cis nubilus Dalla Torre, 1911 -- invalid
	Clytia bakeri Torrey, 1904 -- invalid
	Clytia hendersoni Torrey, 1904 -- valid
	Clytia hesperia (Torrey, 1904) -- valid
	Clytia lomae (Torrey, 1909) -- valid
	Clytia universitatis Torrey, 1904 -- valid
	Cnidopus ritteri (Torrey, 1902) -- invalid
	Cochranella erminea Torres-Gastello, Suárez-Segovia and Cisneros-Heredia, 2007 -- valid
	Coelioxys smithii Dalla Torre, 1896 -- valid
	Colletes petropolitanus Dalla Torre, 1897 -- valid
	Colletes robertsonii Dalla Torre, 1896 -- valid
	Corymorpha palma Torrey, 1902 -- valid -- fairy palm hydroid, fairypalm hydroid
	Corythaica bellula Torre-Bueno, 1917 -- valid
	Corythucha melissae Froeschner and Torres Miller, 2002 -- valid
	Crabro altigena Dalla Torre, 1897 -- valid
	Crabro bellulus (Dalla Torre, 1897) -- invalid
	Crabro canadensis Dalla Torre, 1897 -- invalid
	Crabro carbonicolor Dalla Torre, 1897 -- invalid
	Crabro interruptulus Dalla Torre, 1897 -- invalid
	Crabro rufitarsis Dalla Torre, 1897 -- invalid
	Crabro scutellifer Dalla Torre, 1897 -- invalid
	Crabro servus Dalla Torre, 1897 -- invalid
	Crabro verhoeffi Dalla Torre, 1897 -- invalid
	Crematogaster gerstaeckeri Dalla Torre, 1892 -- valid
	Crematogaster gerstaeckeri gerstaeckeri Dalla Torre, 1892 -- valid
	Crematogaster obscurior Dalla Torre, 1892 -- valid
	Crematogaster sewellii dentata Dalla Torre, 1893 -- valid
	Crossocerus scutellifer (Dalla Torre, 1897) -- invalid
	Cryptagama aurita (Storr, 1981) -- valid -- Gravel Dragon
	Ctenophorus butleri (Storr, 1977) -- invalid
	Ctenophorus butlerorum (Storr, 1977) -- valid
	Ctenophorus caudicinctus graafi (Storr, 1967) -- valid
	Ctenophorus caudicinctus infans (Storr, 1967) -- valid
	Ctenophorus caudicinctus macropus (Storr, 1967) -- valid
	Ctenophorus caudicinctus mensarum (Storr, 1967) -- valid
	Ctenophorus caudicinctus slateri (Storr, 1967) -- valid
	Ctenophorus chapmani (Storr, 1977) -- valid -- Bight Heath Dragon
	Ctenophorus clayi (Storr, 1967) -- valid -- Black-shouldered Ground-dragon
	Ctenophorus femoralis (Storr, 1965) -- valid -- Long-tailed Sand-dragon
	Ctenophorus fordi (Storr, 1965) -- valid -- Mallee Dragon, Mallee Sand-dragon
	Ctenophorus isolepis citrinus (Storr, 1965) -- valid
	Ctenophorus maculatus badius (Storr, 1965) -- valid
	Ctenophorus maculatus dualis (Storr, 1965) -- valid
	Ctenophorus maculatus griseus (Storr, 1965) -- valid
	Ctenophorus mckenziei (Storr, 1981) -- valid -- Dwarf Bicycle-dragon
	Ctenophorus parviceps (Storr, 1964) -- valid -- Gnaraloo Heath Dragon
	Ctenophorus rubens (Storr, 1965) -- valid -- Reddening Sand-dragon
	Ctenophorus salinarum (Storr, 1966) -- valid -- Saltpan Ground-dragon
	Ctenophorus yinnietharra (Storr, 1981) -- valid -- Yinnietharra Crevice-dragon
	Dasypoda rhododactyla Dalla Torre, 1881 -- invalid
	Delma butleri Storr, 1987 -- valid
	Demansia calodera Storr, 1978 -- valid -- Black-necked Whipsnake
	Demansia olivacea calodera Storr, 1978 -- invalid
	Demansia olivacea rufescens Storr, 1978 -- invalid
	Demansia papuensis melaena Storr, 1978 -- valid
	Demansia psammophis cupreiceps Storr, 1978 -- valid
	Demansia reticulata cupreiceps Storr, 1978 -- invalid
	Demansia rufescens Storr, 1978 -- valid -- Rufous Whipsnake
	Demansia simplex Storr, 1978 -- valid -- Grey Whipsnake
	Denisonia monachus Storr, 1964 -- invalid
	Denisonia ordensis Storr, 1984 -- invalid
	Denisonia spectabilis nullarbor Storr, 1981 -- invalid
	Derephysia josefa Baena and Torres, 2009 -- valid
	Derotettix proseni Torres, 1945 -- valid
	Dianthidium cressonii (Dalla Torre, 1896) -- valid
	Diplocheilus allmani Torrey, 1904 -- invalid
	Diplodactylus fulleri Storr, 1978 -- valid
	Diplodactylus granariensis Storr, 1979 -- valid
	Diplodactylus kenneallyi Storr, 1988 -- valid
	Diporiphora albilabris Storr, 1974 -- valid -- Tar Tar Lizard, White-lipped Two-line Dragon
	Diporiphora albilabris albilabris Storr, 1974 -- valid
	Diporiphora albilabris sobria Storr, 1974 -- valid
	Diporiphora arnhemica Storr, 1974 -- valid -- Arnhem Land Two-line Dragon
	Diporiphora convergens Storr, 1974 -- valid -- Crystal Creek Two-line Dragon
	Diporiphora lalliae Storr, 1974 -- valid -- Lally's Two-line Dragon
	Diporiphora magna Storr, 1974 -- valid -- Yellow-sided Two-line Dragon
	Diporiphora margaretae Storr, 1974 -- valid
	Diporiphora pindan Storr, 1980 -- valid -- Pindan Dragon, Pindan Two-line Dragon
	Diporiphora superba Storr, 1974 -- valid -- Superb Two-line Dragon
	Diporiphora valens Storr, 1980 -- valid -- Pilbara Two-line Dragon, Southern Pilbara Spinifex Dragon, Southern Pilbara Tree Dragon
	Disholcaspis Dalla Torre & Kieffer, 1910 -- valid
	Echiopsis atriceps (Storr, 1980) -- invalid
	Ectemnius continuus rufitarsis (Dalla Torre, 1897) -- valid
	Ectopleura marina (Torrey, 1902) -- valid
	Eirene mollis (Torrey, 1909) -- valid
	Elachysoma Torres, 1964 -- valid
	Elachysoma quadrivittata Torres, 1964 -- valid
	Elassoneura Torres, 1964 -- valid
	Elassoneura carychrous Torres, 1964 -- valid
	Eleutherodactylus tantanti Lehr, Torres-Gastello and Suárez-Segovia, 2007 -- invalid
	Encopognathus bellulus (Dalla Torre, 1897) -- valid
	Endasys monticola (Dalla Torre, 1902) -- valid
	Enicocerus melanescens (Dalla Torre, 1877) -- invalid
	Entomosericini Dalla Torre, 1897 -- valid
	Enyalioides altotambo Torres-Carvajal, Venegas and de Queiroz, 2015 -- valid -- Alto Tambo Woodlizard
	Enyalioides anisolepis Torres-Carvajal, Venegas and de Queiroz, 2015 -- valid -- Rough-scaled Woodlizard
	Enyalioides azulae Venegas, Torres-Carvajal, Duran and de Queiroz, 2013 -- valid
	Enyalioides binzayedi Venegas, Torres-Carvajal, Duran and de Queiroz, 2013 -- valid
	Enyalioides rubrigularis Torres-Carvajal, de Queiroz and Etheridge, 2009 -- valid -- Red-throated Woodlizard
	Enyalioides sophiarothschildae Torres-Carvajal, Venegas and de Queiroz, 2015 -- valid -- Rothschild's Woodlizard
	Enyalioides touzeti Torres-Carvajal, Almendáriz, Valencia, Yúnez-Muños and Reyes, 2008 -- valid -- Touzet's Woodlizard
	Epiactis ritteri Torrey, 1902 -- valid -- sandy anemone
	Eucera algeriensis Dalla Torre, 1896 -- valid
	Eucera carolinensis Dalla Torre, 1896 -- valid
	Eucera commixta Dalla Torre & Friese, 1895 -- valid
	Eucera doursana Dalla Torre & Friese, 1894 -- valid
	Eucera fedtschenkoi Dalla Torre, 1896 -- valid
	Eucera syriaca Dalla Torre, 1896 -- valid
	Eucera zeta Dalla Torre, 1896 -- valid
	Eucerceris nevadensis (Dalla Torre, 1890) -- valid
	Eucerceris nevadensis nevadensis (Dalla Torre, 1890) -- valid
	Eucerceris provancheri (Dalla Torre, 1890) -- valid
	Eucerceris superba dichroa (Dalla Torre, 1890) -- invalid
	Eucheilota bakeri (Torrey, 1909) -- valid
	Eudendrium californicum Torrey, 1902 -- valid -- California stickhydroid, california stickyhydroid
	Eulaema chocoana Ospina-Torres & Sandino-Franco, 1997 -- valid
	Eulaema sororia Dressler & Ospina-Torres, 1997 -- valid
	Eupsophus queulensis Veloso, Celis-Diez, Guerrero, Méndez-Torres, Iturra-Constant and Simonetti, 2005 -- invalid
	Eupsophus septentrionalis Ibarra-Vidal, Ortiz and Torres-Pérez, 2004 -- valid
	Eurylochus Torre Bueno, 1914 -- invalid
	Eurylochus bellator Torre Bueno, 1914 -- invalid
	Eutimalphes brownei Torrey, 1909 -- valid
	Exeirina Dalla Torre, 1897 -- valid
	Friesea Dalla Torre, 1895 -- valid
	Gaesochira obscurior (Dalla Torre, 1896) -- valid
	Garveia franciscana (Torrey, 1902) -- valid
	Garveia robusta (Torrey, 1902) -- valid
	Gehyra montium Storr, 1982 -- valid
	Gehyra nana Storr, 1978 -- valid
	Gehyra purpurascens Storr, 1982 -- valid
	Gehyra xenopus Storr, 1978 -- valid
	Gonothyraea clarki Torrey, 1902 -- invalid
	Gopherus evgoodei Edwards, Karl, Vaughn, Rosen, Meléndez Torres and Murphy, 2016 -- valid -- Goode's Thornscrub Tortoise
	Grammonus claudei (de la Torre y Huerta, 1930) -- valid -- brótula parda, reef-cave brotula
	Guaranisaria bicolor Torres, 1958 -- valid
	Guaranisaria llanoi Torres, 1964 -- valid
	Guaranita dobby Torres, Pardo, González-Reyes, Rodríguez Artigas & Corronca, 2016 -- valid
	Gypaetus Storr, 1784 -- valid
	Habropoda cressonii (Dalla Torre, 1896) -- valid
	Habropoda radoszkowskii (Dalla Torre, 1896) -- valid
	Halecium annulatum Torrey, 1902 -- valid
	Halecium kofoidi Torrey, 1902 -- valid
	Halictus determinandus Dalla Torre, 1896 -- valid
	Halictus monochromus Dalla Torre, 1896 -- valid
	Halictus secundus Dalla Torre, 1896 -- valid
	Harenactis Torrey, 1902 -- valid
	Harenactis attenuata Torrey, 1902 -- valid -- giant burrowing anemone
	Heterocampa zayasi (Torre and Alayo, 1959) -- valid
	Heteronotia planiceps Storr, 1989 -- valid
	Heterophrynus caribensis Armas, Torres-Contreras and Álvarez García, 2015 -- valid
	Hoplia lecontei Dalla Torre, 1913 -- invalid
	Hoplitis turcestanica (Dalla Torre, 1896) -- invalid
	Hormiphora californensis (Torrey, 1904) -- valid
	Hyalymenus notatus Torre-Bueno, 1939 -- valid
	Hyalymenus potens Torre-Bueno, 1939 -- valid
	Hydractinia californica Torrey, 1904 -- valid
	Hydractinia milleri Torrey, 1902 -- valid -- Miller hydractinia, miller hydractinia
	Hydraena melas Dalla Torre, 1877 -- valid
	Hydrometra australis Torre-Bueno, 1926 -- invalid
	Hydrometra championiana Torre-Bueno, 1926 -- invalid
	Hydrometra comata Torre-Bueno, 1926 -- valid
	Hydrometra cordubense Torre-Bueno, 1926 -- invalid
	Hydrometra cyprina Torre-Bueno, 1926 -- valid
	Hydrometra exilis Torre-Bueno, 1926 -- valid
	Hydrometra gibara Torre-Bueno, 1926 -- valid
	Hydrometra hungerfordi Torre-Bueno, 1926 -- valid
	Hydrometra husseyi Torre-Bueno, 1926 -- invalid
	Hydrometra kirkaldyana Torre-Bueno, 1926 -- invalid
	Hydrometra lillianis Torre-Bueno, 1926 -- valid
	Hydrometra longicapitis Torre-Bueno, 1927 -- valid
	Hydrometra myrae Torre-Bueno, 1926 -- invalid
	Hydrometra priscillae Torre-Bueno, 1926 -- valid
	Hylaeus asiaticus (Dalla Torre, 1896) -- valid
	Hylobius congener Dalla Torre et al., 1943 -- valid
	Ibalia arcuata Dalla Torre and Kieffer, 1910 -- invalid
	Imantodes chocoensis Torres-Carvajal, Yánez-Muñoz, Quirola, Smith and Almendáriz, 2012 -- valid -- Chocoan Blunt-headed Vine Snake
	Junkia Dalla Torre, 1913 -- invalid
	Larra carbunculus Dalla Torre, 1897 -- invalid
	Larra ganahlii Dalla Torre, 1897 -- invalid
	Larra nigricolor Dalla Torre, 1897 -- invalid
	Larra nigripennata Dalla Torre, 1897 -- invalid
	Larra obscurior Dalla Torre, 1894 -- valid
	Larra politica Dalla Torre, 1897 -- invalid
	Larra tisiphonoides Dalla Torre, 1897 -- invalid
	Larra truncatula Dalla Torre, 1897 -- invalid
	Lasioglossum alpigenum (Dalla Torre, 1877) -- valid
	Lasioglossum cephalotes (Dalla Torre, 1896) -- valid
	Lasioglossum chinense (Dalla Torre, 1896) -- valid
	Lasioglossum duplex (Dalla Torre, 1896) -- valid
	Lasioglossum japonicum (Dalla Torre, 1896) -- valid
	Lasioglossum leucopymatum (Dalla Torre, 1896) -- valid
	Lasioglossum melanopus (Dalla Torre, 1896) -- valid
	Lasioglossum smithii (Dalla Torre, 1896) -- invalid
	Lasioglossum tertium (Dalla Torre, 1896) -- valid
	Leioproctus australiensis (Dalla Torre, 1896) -- valid
	Leioproctus rubiginosus (Dalla Torre, 1896) -- valid
	Lepisiota nigra (Dalla Torre, 1893) -- valid
	Leptothorax interruptus nitidiceps Dalla Torre, 1893 -- valid
	Limnogonus fossarum skusei (Torre-Bueno, 1926) -- valid
	Lipotriches armatula (Dalla Torre, 1896) -- valid
	Lipotriches negligenda (Dalla Torre, 1896) -- valid
	Liris ganahlii (Dalla Torre, 1897) -- valid
	Liris politica (Dalla Torre, 1897) -- invalid
	Liris politicus (Dalla Torre, 1897) -- valid
	Lucasium immaculatum Storr, 1988 -- valid
	Lucasium wombeyi Storr, 1978 -- valid
	Maphaea Dalla Torre, 1911 -- invalid
	Mecopeltus congenitalis Dalla Torre and Hustche, 1930 -- invalid
	Megachile australasiae Dalla Torre, 1896 -- valid
	Megachile binotulata Dalla Torre, 1896 -- valid
	Megachile brasiliensis Dalla Torre, 1896 -- valid
	Megachile buddhae Dalla Torre, 1896 -- valid
	Megachile macularis Dalla Torre, 1896 -- valid
	Megachile modestissima Dalla Torre, 1896 -- valid
	Megachile mortyana Dalla Torre, 1896 -- valid
	Megachile pereziana Dalla Torre, 1896 -- valid
	Megachile tertia Dalla Torre, 1896 -- valid
	Megachile walkeri Dalla Torre, 1896 -- valid
	Megommation festivagum (Dalla Torre, 1896) -- valid
	Mellivora Storr, 1780 -- valid
	Mesoleptus davisii (Dalla Torre, 1898) -- valid
	Metrobates trux (Torre-Bueno, 1921) -- valid
	Metrobates trux trux (Torre-Bueno, 1921) -- valid
	Microvelia (Kirkaldya) Torre-Bueno, 1910 -- valid
	Microvelia albolineolata Torre-Bueno, 1927 -- valid
	Microvelia albolineolata Torre-Bueno, 1927 -- invalid
	Microvelia atrata Torre-Bueno, 1916 -- valid
	Microvelia austrina Torre-Bueno, 1924 -- valid
	Microvelia borealis Torre-Bueno, 1916 -- invalid
	Microvelia borealis Torre-Bueno, 1916 -- invalid
	Microvelia fontinalis Torre-Bueno, 1916 -- valid
	Microvelia longicornis Torre-Bueno, 1925 -- valid
	Microvelia longicornis Torre-Bueno, 1925 -- invalid
	Microvelia villosula Torre-Bueno, 1927 -- invalid
	Microvelia villosula Torre-Bueno, 1927 -- valid
	Mimesa montivaga Dalla Torre, 1897 -- invalid
	Mitrocoma discoidea Torrey, 1909 -- valid
	Mitrocomium medusiferum Torrey, 1902 -- valid
	Mustela felipei Izor and de la Torre, 1978 -- valid -- Colombian Weasel, Don Felipe's Weasel
	Nasua Storr, 1780 -- valid -- coatis
	Neocorynura claviventris (Dalla Torre, 1896) -- valid
	Nephrurus stellatus Storr, 1968 -- valid
	Nephrurus vertebralis Storr, 1963 -- valid
	Nitidula bicolor Dalla Torre, 1879 -- invalid
	Nitidula marginata Dalla Torre, 1879 -- invalid
	Nomada erythraea Dalla Torre, 1896 -- valid
	Nomada hungarica Dalla Torre & Friese, 1894 -- valid
	Nomada integerrima Dalla Torre, 1896 -- valid
	Nomada italica Dalla Torre & Friese, 1894 -- valid
	Nomada siciliensis Dalla Torre & Friese, 1894 -- valid
	Nomia foxii Dalla Torre, 1896 -- valid
	Nomia punctulata Dalla Torre, 1896 -- valid
	Notonecta howardii Torre-Bueno, 1905 -- invalid
	Notonecta raleighi Torre-Bueno, 1907 -- valid
	Obelia corona Torrey, 1904 -- invalid
	Ochthebius flavipes Dalla Torre, 1877 -- valid
	Ochthebius melanescens (Dalla Torre, 1877) -- valid
	Oligopus claudei (de la Torre y Huerta, 1930) -- invalid -- reef-cave brotula
	Oncopeltus cayensis Torre-Bueno, 1944 -- valid
	Opisthopsis Dalla Torre, 1893 -- valid
	Opius provancheri Dalla Torre, 1886 -- valid
	Ornithodoros cavernicolous Dantas-Torres, Venzal and Labruna, 2012 -- valid
	Oxybelus bellulus Dalla Torre, 1897 -- invalid
	Oxybelus packardi Dalla Torre, 1890 -- invalid
	Oxybelus radoszkowskyi Dalla Torre, 1897 -- invalid
	Pachycerianthus aestuarii (Torrey and Kleeburger, 1909) -- valid
	Pachycerianthus johnsoni (Torrey and Kleeburger, 1909) -- valid
	Pachycondyla castaneicolor (Dalla Torre, 1893) -- valid
	Pachypsaltria cirrha Torres, 1960 -- valid
	Pachypsaltria haematodes Torres, 1960 -- valid
	Pachypsaltria monrosi Torres, 1960 -- valid
	Pachypsaltria peristicta Torres, 1960 -- valid
	Pachypsaltria phaedima Torres, 1960 -- valid
	Palaeorhiza elegantissima (Dalla Torre, 1896) -- valid
	Panurgus calcaratus nigricornis Dalla Torre, 1877 -- invalid
	Parasuta monachus (Storr, 1964) -- valid -- Hooded Snake, Monk Snake
	Parasuta spectabilis bushi (Storr, 1988) -- valid
	Parasuta spectabilis nullarbor (Storr, 1981) -- valid
	Paroplocephalus atriceps (Storr, 1980) -- valid -- Lake Cronin Snake
	Patellapis reticulosa (Dalla Torre, 1896) -- valid
	Pelocoris carolinensis Torre-Bueno, 1907 -- valid
	Pemphredon cressoni Dalla Torre, 1897 -- invalid
	Pemphredon provancheri Dalla Torre, 1897 -- invalid
	Peromyscus difficilis petricola Hoffmeister and de la Torre, 1959 -- invalid
	Peromyscus difficilis saxicola Hoffmeister and de la Torre, 1959 -- invalid
	Phalanger Storr, 1780 -- valid -- cuscuses
	Pheidole radoszkowskii pugnax Dalla Torre, 1892 -- valid
	Phialidium lomae Torrey, 1909 -- invalid
	Phialium bakeri Torrey, 1909 -- invalid
	Phialopsis Torrey, 1909 -- valid
	Phialopsis diegensis Torrey, 1909 -- valid
	Phialucium comata Torrey, 1909 -- invalid
	Philanthus elegantissimus Dalla Torre, 1897 -- valid
	Philanthus mendozae Dalla Torre, 1897 -- invalid
	Philanthus politus pulcher Dalla Torre, 1897 -- invalid
	Philanthus pulcher Dalla Torre, 1897 -- valid
	Phoronis pacifica Torrey, 1901 -- invalid
	Phygadeuon monticola Dalla Torre, 1902 -- invalid
	Plumularia alicia Torrey, 1902 -- invalid
	Pnirontis perpugnax (Torre Bueno, 1914) -- valid
	Podagritus carbonicolor (Dalla Torre, 1897) -- valid
	Podalonia turcestanica (Dalla Torre, 1897) -- valid
	Podium tau (Dalla Torre, 1897) -- valid
	Pogona Storr, 1982 -- valid
	Prasinosoma Torres, 1963 -- valid
	Prasinosoma fuembuenai Torres, 1963 -- valid
	Pristimantis tantanti (Lehr, Torres-Gastello and Suárez-Segovia, 2007) -- valid
	Procavia Storr, 1780 -- valid
	Procebus Storr, 1780 -- invalid
	Procyon Storr, 1780 -- valid -- raccoons
	Proisotoma macgillivaryi (Della Torre, 1895) -- valid
	Proisotoma schoetti (Dalla Torre, 1895) -- valid
	Protosmia sicula (Dalla Torre & Friese, 1895) -- valid
	Psen montivagus (Dalla Torre, 1897) -- valid
	Pseneo montivagus (Dalla Torre, 1897) -- invalid
	Psephenotettix Torres, 1958 -- valid
	Psephenotettix grandis Torres, 1958 -- valid
	Psephenotettix minor Torres, 1958 -- valid
	Pseudacratus Dalla Torre, 1912 -- invalid
	Pseudoceros astrorum Bulnes and Torres, 2014 -- valid
	Pseudomyrmex elongatulus (Dalla Torre, 1892) -- valid
	Pseudomyrmex elongatulus elongatulus (Dalla Torre, 1892) -- valid
	Pseudomyrmex monochrous (Dalla Torre, 1892) -- valid
	Pseudonaja affinis exilis Storr, 1989 -- valid
	Pseudosaldula paralia (Torres, 1954) -- invalid
	Ptychogena californica Torrey, 1909 -- valid
	Pycnotheca allmani (Torrey, 1904) -- valid
	Ramphotyphlops centralis Storr, 1984 -- invalid
	Ramphotyphlops hamatus Storr, 1981 -- invalid
	Ramphotyphlops howi Storr, 1983 -- invalid
	Ramphotyphlops kimberleyensis Storr, 1981 -- invalid
	Ramphotyphlops margaretae Storr, 1981 -- invalid
	Ramphotyphlops micromma Storr, 1981 -- invalid
	Ramphotyphlops micrommus Storr, 1981 -- invalid
	Ramphotyphlops troglodytes Storr, 1981 -- invalid
	Ramphotyphlops yampiensis Storr, 1981 -- invalid
	Ranatra kirkaldyi Torre-Bueno, 1905 -- valid
	Ranatra kirkaldyi kirkaldyi Torre-Bueno, 1905 -- valid
	Rhagovelia arctoa Torre-Bueno, 1924 -- invalid
	Rhagovelia arctoa Torre-Bueno, 1924 -- invalid
	Rhagovelia flavicincta Torre-Bueno, 1924 -- invalid
	Rhagovelia flavicincta Torre-Bueno, 1924 -- invalid
	Rhagovelia obesa flavicincta Torre-Bueno, 1924 -- invalid
	Rhagovelia rivale Torre-Bueno, 1924 -- valid
	Rheumatobates praeposterus Bergroth in Torre-Bueno, 1908 -- valid
	Rhinoplocephalus spectabilis bushi Storr, 1988 -- invalid
	Rhopalum carbonicolor (Dalla Torre, 1897) -- invalid
	Rulyrana erminea (Torres-Gastello, Suárez-Segovia and Cisneros-Heredia, 2007) -- invalid
	Rutuba Torre Bueno, 1914 -- invalid
	Rutuba perpugnax Torre Bueno, 1914 -- invalid
	Salacia desmoides (Torrey, 1902) -- invalid
	Scaptotrigona pectoralis (Dalla Torre, 1896) -- valid
	Sceliphron mocsaryi Dalla Torre, 1897 -- invalid
	Sceliphron ritsemae Dalla Torre, 1897 -- invalid
	Sceliphron spirifex aegyptiacum Dalla Torre, 1897 -- invalid
	Sceliphron tau Dalla Torre, 1897 -- invalid
	Sceliphron vicinum Dalla Torre, 1897 -- invalid
	Sceliphron violascens Dalla Torre, 1897 -- invalid
	Scrippsia Torrey, 1909 -- valid
	Scrippsia pacifica Torrey, 1909 -- valid
	Sertularella pedrensis Torrey, 1904 -- valid
	Sertularia desmoides Torrey, 1902 -- valid
	Simoselaps incinctus (Storr, 1968) -- invalid
	Simoselaps littoralis (Storr, 1968) -- valid -- Coastal Burrowing Snake, West-Coast Banded Snake
	Sphex gratiosissimus Dalla Torre, 1897 -- invalid
	Sphex guerinii (Dalla Torre, 1897) -- invalid
	Spongia sterea de Laubenfels and Storr -- valid -- wire sponge
	Stenocercus angel Torres-Carvajal, 2000 -- valid
	Stenocercus cadlei Torres-Carvajal and Mafla-Endara, 2013 -- valid
	Stenocercus chota Torres-Carvajal, 2000 -- valid
	Stenocercus frittsi Torres-Carvajal, 2005 -- valid
	Stenocercus puyango Torres-Carvajal, 2005 -- valid
	Stenocercus santander Torres-Carvajal, 2007 -- valid
	Stenocercus sinesaccus Torres-Carvajal, 2005 -- valid
	Strophurus assimilis (Storr, 1988) -- valid
	Strophurus jeanae (Storr, 1988) -- valid
	Strophurus mcmillani (Storr, 1978) -- valid
	Strophurus rankini (Storr, 1979) -- valid
	Strophurus wellingtonae (Storr, 1988) -- valid
	Strophurus wilsoni (Storr, 1983) -- valid
	Sturnira angeli de la Torre, 1966 -- valid
	Sturnira lilium angeli de la Torre, 1966 -- invalid
	Sturnira lilium paulsoni de la Torre, 1966 -- invalid
	Sturnira magna de la Torre, 1966 -- valid -- greater yellow-shouldered bat, Greater Yellow-shouldered Bat
	Sturnira paulsoni de la Torre, 1966 -- valid
	Sturnira thomasi de la Torre and Schwartz, 1966 -- valid -- Thomas's yellow-shouldered bat, Thomas's Yellow-shouldered Bat
	Sturnira tildae de la Torre, 1959 -- valid -- Tilda yellow-shouldered bat, Tilda's Yellow-shouldered Bat
	Suta monachus (Storr, 1964) -- invalid
	Suta ordensis (Storr, 1984) -- valid -- Ord Curl Snake
	Suta spectabilis bushi (Storr, 1988) -- invalid
	Suta spectabilis nullarbor (Storr, 1981) -- invalid
	Svastra cressonii (Dalla Torre, 1896) -- valid
	Symplectoscyphus pedrensis (Torrey, 1904) -- valid
	Synopeas ashmeadii Dalla Torre, 1898 -- valid
	Synophis bogerti Torres-Carvajal, Echevarría, Venegas, Chávez and Camper, 2015 -- valid -- Bogert's Shadow Snake
	Synophis insulomontanus Torres-Carvajal, Echevarría, Venegas, Chávez and Camper, 2015 -- valid -- Mountain Shadow Snake
	Synophis niceforomariae Pyron, Arteaga, Echevarría and Torres-Carvajal, 2016 -- valid -- Nicéforo María's Shadow Snake
	Synophis zaheri Pyron, Arteaga, Echevarría and Torres-Carvajal, 2016 -- valid -- Zaher's Shadow Snake
	Synophis zamora Torres-Carvajal, Echevarría, Venegas, Chávez and Camper, 2015 -- valid -- Zamoran Shadow Snake
	Tachysphex dubiosus Dalla Torre, 1897 -- invalid
	Tachysphex erythrophorus Dalla Torre, 1897 -- valid
	Tachysphex nigricolor (Dalla Torre, 1897) -- valid
	Tachysphex nigricolor nigricolor (Dalla Torre, 1897) -- valid
	Tachysphex tarsalis Dalla Torre, 1897 -- invalid
	Tachytes argenticrus Dalla Torre, 1897 -- invalid
	Tachytes holmbergii Dalla Torre, 1897 -- invalid
	Tachytes indicus Dalla Torre, 1897 -- valid
	Tachytes monticola Dalla Torre, 1897 -- invalid
	Tachytes tarsalis (Dalla Torre, 1897) -- invalid
	Tachytes vischu Dalla Torre, 1897 -- invalid
	Tarsius Storr, 1780 -- valid
	Telmatometra Bergroth in Torre-Bueno, 1908 -- valid
	Telmatometra whitei Bergroth in Torre-Bueno, 1908 -- valid
	Tenebriochernes Bedoya-Roqueme and Torres, 2019 -- valid
	Tenebriochernes concavus Bedoya-Roqueme and Torres, 2019 -- valid
	Tenebriochernes mohani Bedoya-Roqueme and Torres, 2019 -- valid
	Tenebriochernes pilosus Bedoya-Roqueme and Torres, 2019 -- valid
	Tetralonia commixta (Dalla Torre & Friese, 1895) -- invalid
	Tettigades albicerata Torres, 1949 -- invalid
	Tettigades angularis Torres, 1958 -- valid
	Tettigades auropilosa Torres, 1944 -- valid
	Tettigades bahiensis Torres, 1942 -- invalid
	Tettigades blanchardi Torres, 1948 -- invalid
	Tettigades bosqi Torres, 1942 -- valid
	Tettigades brevicauda Torres, 1958 -- valid
	Tettigades brevivenosa Torres, 1942 -- invalid
	Tettigades crassa Torres, 1958 -- valid
	Tettigades curvicosta Torres, 1958 -- valid
	Tettigades distanti Torres, 1958 -- valid
	Tettigades lacertosa Torres, 1944 -- valid
	Tettigades limbata Torres, 1958 -- valid
	Tettigades lizeri Torres, 1942 -- valid
	Tettigades macrogina Torres, 1949 -- invalid
	Tettigades major Torres, 1944 -- valid
	Tettigades minuta Torres, 1949 -- invalid
	Tettigades pauxilla Torres, 1958 -- valid
	Tettigades procera Torres, 1958 -- valid
	Tettigades sarcinatrix Torres, 1944 -- valid
	Tettigades sordida Torres, 1944 -- valid
	Tettigades undata Torres, 1958 -- valid
	Tettigades unipuncta Torres, 1958 -- valid
	Tettigotoma Torres, 1942 -- valid
	Tettigotoma maculata Torres, 1942 -- valid
	Thuiaria desmoides (Torrey, 1902) -- valid
	Thyreus smithii (Dalla Torre, 1896) -- valid
	Tiaropsidium Torrey, 1909 -- valid
	Tiaropsidium kelsei Torrey, 1909 -- valid
	Tiaropsidium kelseyi Torrey, 1909 -- valid
	Tollius vanduzeei Torre-Bueno, 1940 -- valid
	Trichocorixa naias (Kirkaldy and Torre-Bueno, 1909) -- invalid
	Trigonopsis vicina (Dalla Torre, 1897) -- valid
	Trigonopsis violascens (Dalla Torre, 1897) -- valid
	Trilepida pastusa Salazar-Valenzuela, Martins, Amador-Oyola and Torres-Carvajal, 2015 -- valid -- Pastuso Threadsnake
	Trypoxylon cameronii Dalla Torre, 1897 -- valid
	Trypoxylon rugiceps Dalla Torre, 1897 -- valid
	Tubularia marina Torrey, 1902 -- invalid
	Tympanocryptis houstoni Storr, 1982 -- valid -- Houston's Earless Dragon
	Tympanocryptis lineata macra Storr, 1982 -- valid
	Valgus rufosquamatus Dalla Torre, 1879 -- invalid
	Varanus kingorum Storr, 1980 -- valid
	Varanus panoptes Storr, 1980 -- valid
	Varanus pilbarensis Storr, 1980 -- valid
	Vermicella annulata snelli Storr, 1968 -- invalid
	Vermicella bertholdi littoralis Storr, 1968 -- invalid
	Vermicella semifasciata incincta Storr, 1968 -- invalid
	Vermicella snelli Storr, 1968 -- valid
	Veseris bellator (Torre Bueno, 1914) -- valid

Kingdom Plantae
	Abies douglassii var. macrocarpa Torr. -- not accepted
	Abies douglassii var. macrocarpum Torr. -- not accepted
	Abronia micrantha Torr. -- not accepted
	Abronia turbinata Torr. ex S. Watson -- accepted -- transmontane sand verbena
	Abutilon hulseanum (Torr. & A. Gray) Torr. ex A. Gray -- accepted -- mauve
	Abutilon texense Torr. & A. Gray -- not accepted
	Acacia angustissima var. texensis (Torr. & A. Gray) Isely -- accepted -- prairie wattle, whiteball acacia
	Acacia schottii Torr. -- not accepted -- Schott's acacia, Schott's wattle
	Acacia texensis Torr. & A. Gray -- not accepted
	Acalypha hederacea Torr. -- not accepted
	Acalypha radians Torr. -- accepted -- cardinal's feather
	Acanthochiton Torr. -- not accepted
	Acanthochiton Torr. -- not accepted
	Acanthochiton wrightii Torr. -- not accepted
	Acanthogonum corrugatum Torr. -- not accepted
	Acanthogonum polygonoides (Torr. & A. Gray) Goodman -- not accepted
	Acanthogonum rigidum Torr. -- not accepted
	Acer californica (Torr. & A. Gray) Wesm. -- not accepted
	Acer californicum (Torr. & A. Gray) D. Dietr. -- not accepted
	Acer glabrum Torr. -- accepted -- California mountain maple, Douglas' maple, dwarf maple, mountain maple, New Mexico maple, Rocky Mountain maple, Sierra maple
	Acer glabrum var. glabrum Torr. -- accepted -- Rocky Mountain maple
	Acer glabrum var. tripartitum (Nutt. ex Torr. & A. Gray) Pax -- not accepted
	Acer negundo ssp. californicum (Torr. & A. Gray) Wesm. -- not accepted
	Acer negundo var. californicum (Torr. & A. Gray) Sarg. -- accepted -- box elder, California boxelder
	Acer rubrum var. trilobum Torr. & A. Gray ex K. Koch -- accepted -- red maple
	Acer tripartitum Nutt. ex Torr. & A. Gray -- not accepted
	Acerates auriculata Engelm. ex Torr. -- not accepted
	Achillea millefolium var. rosea (Desf.) Torr. & A. Gray -- not accepted
	Achyronychia Torr. & A. Gray -- accepted
	Achyronychia cooperi Torr. & A. Gray -- accepted -- Cooper's frostmat, onyxflower
	Acleisanthes angustifolia (Torr.) R.A. Levin -- accepted -- narrowleaf moonpod
	Acleisanthes parvifolia (Torr.) R.A. Levin -- accepted -- littleleaf moonpod
	Actaea spicata var. arguta (Nutt.) Torr. -- not accepted
	Actinea grandiflora (Torr. & A. Gray ex A. Gray) Kuntze -- not accepted
	Actinospermum angustifolium (Pursh) Torr. & A. Gray -- not accepted
	Acuan leptolobum (Torr. & A. Gray) Kuntze -- not accepted
	Adenostoma sparsifolium Torr. -- accepted -- red shank, redshank
	Adhatoda longiflora Torr. -- not accepted
	Agalinis grandiflora var. serrata (Torr. ex Benth.) S.F. Blake -- not accepted
	Agave lecheguilla Torr. -- accepted -- lecheguilla
	Agave lechuguilla Torr. -- not accepted -- lecheguilla, lechuguilla, Maguey lechuguilla
	Agave maculata Engelm. ex Torr., non Regel -- not accepted
	Agave parviflora Torr. -- accepted -- Maguey sóbari, smallflower agave, smallflower century plant
	Agave parviflora ssp. parviflora Torr. -- accepted -- Santa Cruz striped agave, smallflower century plant
	Agnorhiza ovata (Torr. & A. Gray ex Torr.) W.A. Weber -- accepted -- southern mule-ears
	Agoseris glauca var. dasycephala (Torr. & A. Gray) Jeps. -- accepted -- pale agoseris, pale goat-chicory
	Agraulus brevifolius Nees ex Torr. -- not accepted
	Agrimonia eupatoria var. mollis Torr. & A. Gray -- not accepted
	Agrimonia incisa Torr. & A. Gray -- accepted -- incised agrimony, incised groovebur
	Agrimonia mollis (Torr. & A. Gray) Britton -- not accepted
	Agrostis airoides Torr. -- not accepted
	Agrostis ampla f. monolepis (Torr.) Beetle -- not accepted
	Agrostis caespitosa Torr. -- not accepted
	Agrostis canina var. tenella Torr. -- not accepted
	Agrostis compressa Torr. -- not accepted
	Agrostis cryptandra Torr. -- not accepted
	Agrostis drummondii Torr. ex Hook. f. -- not accepted
	Agrostis exarata var. monolepis (Torr.) Hitchc. -- not accepted -- monolepis bentgrass
	Agrostis lateriflora var. filiformis Torr. -- not accepted
	Agrostis laxiflora var. caespitosa Torr. -- not accepted
	Agrostis laxiflora var. montana (Torr.) Tuck. -- not accepted
	Agrostis laxiflora var. scabra (Willd.) Torr. -- not accepted
	Agrostis laxiflora var. tenuis (Tuck.) Torr. -- not accepted
	Agrostis longifolia Torr. -- not accepted
	Agrostis scabra var. montana (Torr.) Fernald -- not accepted
	Agrostis serotina Torr. -- not accepted
	Agrostis sylvatica Torr. -- not accepted
	Aira aristulata Torr. -- not accepted
	Aldenella tenuifolia (Torr. & A. Gray) Greene -- not accepted
	Alectoroctonum wrightii (Torr. & A. Gray) Klotzsch & Garcke -- not accepted
	Aletes acaulis (Torr.) J.M. Coult. & Rose -- accepted -- stemless Indian parsley
	Aletes tenuifolius (Nutt. ex Torr. & A. Gray) W.A. Weber -- not accepted
	Aliciella subnuda (Torr. ex A. Gray) J.M. Porter -- accepted -- coral gilia
	Alisma geyeri Torr. -- not accepted
	Alisma gramineum var. geyeri (Torr.) Sam. -- not accepted
	Alisma plantago-aquatica var. parviflorum (Pursh) Torr. -- not accepted
	Allium amplectens Torr. -- accepted -- narrowleaf onion
	Allium croceum Torr. -- not accepted
	Allium tribracteatum Torr. -- accepted -- threebract onion
	Allotropa Torr. & A. Gray ex A. Gray -- accepted -- sugar stick, sugarstick
	Allotropa virgata Torr. & A. Gray ex A. Gray -- accepted -- sugarstick
	Alnus oblongifolia Torr. -- accepted -- Arizona alder, oblong leaf alder
	Alopecurus geniculatus var. aristulatus (Michx.) Torr. -- not accepted
	Aloysia macrostachya (Torr.) Moldenke -- accepted -- Rio Grande beebrush
	Alsine jamesiana (Torr.) A. Heller -- not accepted
	Alsine jamesii (Torr.) Holz. -- not accepted
	Amaranthus fimbriatus (Torr.) Benth. ex S. Watson -- accepted -- fringed amaranth, fringed pigweed
	Amaranthus fimbriatus var. denticulatus (Torr.) Uline & W.L. Bray -- not accepted -- fringed amaranth, fringed pigweed
	Amaranthus fimbriatus var. fimbriatus (Torr.) Benth. ex S. Watson -- not accepted -- fringed amaranth, fringed pigweed
	Ambrosia coronopifolia Torr. & A. Gray -- not accepted
	Ambrosia deltoidea (Torr.) Payne -- accepted -- triangle bur ragweed, triangle burr ragweed, triangle bursage
	Ambrosia monogyra (Torr. & A. Gray) Strother & B.G. Baldw. -- accepted -- singlewhorl burrobrush
	Ambrosia psilostachya var. coronopifolia (Torr. & A. Gray) Farw. -- not accepted
	Ambrosia salsola (Torr. & A. Gray) Strother & B.G. Baldw. -- accepted -- burrobrush
	Ambrosia salsola var. salsola (Torr. & A. Gray) Strother & B.G. Baldw. -- not accepted
	Ambrosia trifida var. integrifolia (Muhl. ex Willd.) Torr. & A. Gray -- not accepted
	Amelanchier alnifolia var. pumila (Torr. & A. Gray) C.K. Schneid. -- accepted -- dwarf serviceberry
	Amelanchier canadensis var. pumila Torr. & A. Gray -- not accepted -- Canadian serviceberry
	Amelanchier oblongifolia (Torr. & A. Gray) M. Roem. -- not accepted
	Amelanchier pumila (Torr. & A. Gray) Nutt. ex M. Roem. -- not accepted -- dwarf serviceberry
	Amerosedum lanceolatum (Torr.) Á. Löve & D. Löve -- not accepted
	Ammobroma Torr. ex A. Gray -- not accepted
	Ammobroma sonorae Torr. ex A. Gray -- not accepted
	Ammophila brevipilis (Torr.) Benth. ex Vasey -- not accepted
	Ammoselinum Torr. & A. Gray -- accepted -- sandparsley
	Ammoselinum popei Torr. & A. Gray -- accepted -- plains sandparsley
	Amorpha paniculata Torr. & A. Gray -- accepted -- panicled false indigo, panicled indigobush
	Amphianthus Torr. -- not accepted
	Amphianthus Torr. -- not accepted
	Amphianthus pusillus Torr. -- not accepted -- little amphianthus
	Amphicarpaea pitcheri Torr. & A. Gray -- not accepted
	Amphipappus Torr. & A. Gray -- accepted -- amphipappus, chaffbush
	Amphipappus fremontii Torr. & A. Gray ex A. Gray -- accepted -- chaffbush, Fremont's chaffbush
	Amphipappus fremontii ssp. fremontii Torr. & A. Gray ex A. Gray -- not accepted -- Fremont's chaffbush
	Amphipappus fremontii var. fremontii Torr. & A. Gray ex A. Gray -- accepted -- chaff-bush, Fremont's chaffbush
	Amsonia longiflora Torr. -- accepted -- tubular bluestar
	Amsonia longiflora var. longiflora Torr. -- accepted -- tubular bluestar
	Amsonia tomentosa Torr. & Frém. -- accepted -- woolly amosonia, woolly bluestar
	Amsonia tomentosa var. tomentosa Torr. & Frém. -- accepted -- woolly bluestar
	Anatherostipa brevis (Torres) Peñailillo -- accepted
	Andropogon glaucus Torr. -- not accepted
	Andropogon jamesii Torr. -- not accepted
	Androsace carinata Torr. -- not accepted
	Androsace chamaejasme ssp. carinata (Torr.) Hultén -- not accepted -- sweetflower rockjasmine
	Androsace chamaejasme var. carinata (Torr.) R. Knuth -- not accepted
	Androstephium Torr. -- accepted -- funnel lily, funnellily
	Androstephium violaceum Torr. -- accepted
	Anemone decapetala var. heterophylla (Torr. & A. Gray) Britton & Rusby -- not accepted
	Anemone globosa (Torr. & A. Gray) Nutt. ex Pritz. -- not accepted
	Anemone heterophylla Nutt. ex Torr. & A. Gray (pro. syn.) -- not accepted
	Anemone heterophyllum Nutt. ex Torr. & A. Gray (pro. syn.) -- not accepted
	Anemone multifida ssp. globosa (Torr. & A. Gray) Torr. & A. Gray -- not accepted
	Anemone multifida var. globosa Torr. & A. Gray -- not accepted
	Angelica arguta Nutt. ex Torr. & A. Gray -- accepted -- angelica, Lyall's angelica, sharptooth angelica
	Anisacanthus juncea (Torr.) Hemsl. -- accepted
	Anisacanthus junceus (Torr.) Hemsl. -- not accepted
	Anisacanthus puberulus (Torr.) Henrickson & E.J. Lott -- accepted -- dwarf desert honeysuckle
	Anisacanthus quadrifidus var. wrightii (Torr.) Henrickson -- accepted -- Wright's anisacanth, Wright's desert honeysuckle
	Anisacanthus thurberi (Torr.) A. Gray -- accepted -- desert honeysuckle, Thurber's desert honeysuckle
	Anisacanthus wrightii (Torr.) A. Gray -- not accepted
	Anisocoma Torr. & A. Gray -- accepted -- anisocoma
	Anisocoma acaulis Torr. & A. Gray -- accepted -- scale bud, scalebud
	Anisophyllum fendleri (Torr. & A. Gray) Klotzsch & Garcke -- not accepted
	Anisophyllum melanadenium (Torr. & A. Gray) Klotzsch & Garcke -- not accepted
	Anogra coronopifolia (Torr. & A. Gray) Britton -- not accepted
	Antennaria dimorpha (Nutt.) Torr. & A. Gray -- accepted -- low everlasting, low pussytoes
	Antennaria luzuloides Torr. & A. Gray -- accepted -- rush pussytoes
	Antennaria luzuloides ssp. luzuloides Torr. & A. Gray -- accepted -- rush pussytoes
	Antennaria monocephala (Torr. & A. Gray) Greene non Antennaria monocephala DC. -- not accepted
	Antennaria plantaginifolia var. monocephala Torr. & A. Gray -- not accepted
	Anticlea fremontii Torr. -- not accepted
	Antiphytum floribundum (Torr.) A. Gray -- accepted -- Texas saucerflower
	Anulocaulis leiosolenus (Torr.) Standl. -- accepted -- ringstem, southwestern ringstem
	Anulocaulis leiosolenus var. leiosolenus (Torr.) Standl. -- accepted -- southwestern ringstem
	Anychiastrum baldwinii (Torr. & A. Gray) Small -- not accepted
	Apargidium Torr. & A. Gray -- not accepted
	Apargidium boreale (Bong.) Torr. & A. Gray -- not accepted
	Aphanostephus riddellii Torr. & A. Gray -- accepted -- Riddell's dozedaisy
	Aphyllon fasciculatum (Nutt.) Torr. & A. Gray -- not accepted
	Apiastrum Nutt. ex Torr. & A. Gray -- accepted
	Aplectrum Torr. -- accepted -- Adam and Eve
	Aplectrum hyemale (Muhl. ex Willd.) Torr. -- accepted -- Adam and Eve, aplectrelle d'hiver, puttyroot
	Aplopappus tortifolius Torr. & A. Gray -- not accepted
	Arabis brachycarpa (Torr. & A. Gray) Britton -- not accepted
	Arabis dentata (Torr.) Torr. & A. Gray -- not accepted
	Arabis hirsuta var. glabrata Torr. & A. Gray -- not accepted -- mountain rockcress
	Arctomecon Torr. & Frém. -- accepted -- bearpoppy
	Arctomecon californica Torr. & Frém. -- accepted -- California bearpoppy
	Arenaria benthamii Fenzl ex Torr. & A. Gray -- accepted -- hilly sandwort
	Arenaria brevifolia Nutt. ex Torr. & A. Gray -- not accepted
	Arenaria douglasii Fenzl ex Torr. & A. Gray -- not accepted
	Arenaria jamesiana (Torr.) Shinners -- not accepted
	Argythammia blodgettii (Torr.) Chapm. -- not accepted
	Argythammia serrata (Torr.) Müll. Arg. -- not accepted
	Argythamnia blodgettii (Torr.) Chapm. -- not accepted -- Blodgett's silverbush
	Argythamnia humilis var. laevis (Torr.) Shinners -- not accepted -- low silverbush, low wildmercury
	Argythamnia laevis Torr. -- not accepted
	Argythamnia serrata (Torr.) Müll. Arg. -- not accepted -- sawtooth ditaxis, Yuma silverbush
	Aristida fasciculata Torr. -- not accepted
	Aristolochia californica Torr. -- accepted -- California dutchman's pipe
	Arnoglossum diversifolium (Torr. & A. Gray) H. Rob. -- accepted -- variableleaf Indian plaintain, variableleaf Indian plantain
	Arrhenatherum kentuckensis Torr. -- not accepted
	Arrhenatherum pensylvanicum (L.) Torr. -- not accepted
	Artemisia elatior (Torr. & A. Gray) Rydb. -- not accepted
	Artemisia filifolia Torr. -- accepted -- sand sagebrush, sandhill sage, silvery wormwood
	Artemisia ludoviciana var. gnaphalodes (Nutt.) Torr. & A. Gray -- not accepted
	Artemisia ludoviciana var. latifolia (Besser) Torr. & A. Gray -- not accepted
	Artemisia tilesii ssp. elatior (Torr. & A. Gray) Hultén -- not accepted -- Tilesius' wormwood
	Artemisia tilesii var. elatior Torr. & A. Gray -- not accepted
	Artemisia vulgaris var. mexicana (Willd. ex Spreng.) Torr. & A. Gray -- not accepted
	Arundo brevipilis Torr. -- not accepted
	Arundo coarctata Torr. -- not accepted
	Asclepias arenaria Torr. -- accepted -- sand milkweed
	Asclepias auriculata (Engelm. ex Torr.) Holz. -- not accepted
	Asclepias brachystephana Engelm. ex Torr. -- accepted -- bract milkweed, short-crowned milkweed, shortcrown milkweed
	Asclepias erosa Torr. -- accepted -- desert milkweed
	Asclepias fremontii Torr. -- not accepted
	Asclepias involucrata Engelm. ex Torr. -- accepted -- dwarf milkweed
	Asclepias latifolia (Torr.) Raf. -- accepted -- broadleaf milkweed, corn-kernel milkweed
	Asclepias macrotis Torr. -- accepted -- long-hood milkweed, longhood milkweed, longhorn milkweed
	Asclepias meadii Torr. ex A. Gray -- accepted -- Mead's milkweed
	Asclepias nummularia Torr. -- accepted -- tufted milkweed
	Asclepias speciosa Torr. -- accepted -- showy milkweed
	Asclepias viridiflora var. lanceolata Torr. -- not accepted
	Asclepias viridiflora var. obovata (Elliott) Torr. -- not accepted
	Aster alpigenus (Torr. & A. Gray) A. Gray -- not accepted
	Aster alpigenus ssp. alpigenus (Torr. & Gray) Gray -- not accepted -- tundra aster
	Aster anomalus Engelm. ex Torr. & A. Gray -- not accepted -- manyray aster
	Aster ascendens var. fremontii Torr. & A. Gray -- not accepted
	Aster baldwinii Torr. & A. Gray. -- not accepted
	Aster borealis (Torr. & A. Gray) Prov. -- not accepted -- rush aster
	Aster chapmanii Torr. & A. Gray -- not accepted -- savannah aster
	Aster commutatus (Torr. & A. Gray) A. Gray -- not accepted
	Aster curtisii Torr. & A. Gray -- not accepted
	Aster divaricatus (Nutt.) Torr. & A. Gray non L. -- not accepted -- aster à rameaux étalés, serpentine aster, white wood aster
	Aster dumosus var. cordidifolius (Michx.) Torr. & A. Gray -- not accepted
	Aster dumosus var. coridifolius (Michx.) Torr. & A. Gray -- not accepted
	Aster dumosus var. gracilentus Torr. & A. Gray -- not accepted
	Aster dumosus var. strictior Torr. & A. Gray -- not accepted -- rice button aster
	Aster dumosus var. subulifolius Torr. & A. Gray -- not accepted -- rice button aster
	Aster elegans (Nutt.) Torr. & A. Gray non Willd. -- not accepted
	Aster elliotti Torr. & A. Gray -- not accepted
	Aster elliottii Torr. & A. Gray -- not accepted
	Aster elodes Torr. & A. Gray -- not accepted
	Aster ericoides var. commutatus (Torr. & A. Gray) B. Boivin -- not accepted
	Aster ericoides var. commutatus (Torr. & A. Gray) B. Boivin -- not accepted
	Aster ericoides var. platyphyllus Torr. & A. Gray -- not accepted
	Aster ericoides var. stricticaulis (Torr. & A. Gray) F.C. Gates -- not accepted -- white heath aster
	Aster ericoides var. villosus (Michx.) Torr. & A. Gray -- not accepted
	Aster eryngiifolius Torr. & A. Gray -- not accepted -- thistleleaf aster
	Aster falcatus ssp. commutatus (Torr. & A. Gray) A.G. Jones -- not accepted
	Aster falcatus var. commutatus (Torr. & A. Gray) A.G. Jones -- not accepted -- cluster aster
	Aster fremonti (Torr. & A. Gray) A. Gray -- not accepted
	Aster fremontii (Torr. & A. Gray) A. Gray -- not accepted
	Aster frondosus (Nutt.) Torr. & A. Gray -- not accepted
	Aster glabriuscula (Nutt.) Torr. & A. Gray -- not accepted
	Aster glaucus Torr. & A. Gray non Nees -- not accepted
	Aster laxifolius var. borealis Torr. & A. Gray -- not accepted
	Aster lindleyanus Torr. & A. Gray -- not accepted
	Aster lutescens (Lindl. ex DC.) Torr. & A. Gray -- not accepted
	Aster mirabilis Torr. & A. Gray -- not accepted -- bouquet aster
	Aster multiflorus var. commutatus Torr. & A. Gray -- not accepted
	Aster multiflorus var. stricticaulis Torr. & A. Gray -- not accepted
	Aster novi-belgii var. elodes (Torr. & A. Gray) A. Gray -- not accepted -- New Belgium aster
	Aster occidentalis (Nutt.) Torr. & A. Gray -- not accepted -- western aster
	Aster occidentalis var. fremontii (Torr. & A. Gray) A.G. Jones -- not accepted -- Fremont's aster
	Aster occidentalis var. occidentalis (Nutt.) Torr. & Gray -- not accepted -- western aster
	Aster oregonum (Nutt.) Torr. & A. Gray -- not accepted
	Aster oregonus auct. non (Nutt.) Torr. & A. Gray -- not accepted
	Aster patens var. patentissimus (Lindl. ex DC.) Torr. & A. Gray -- not accepted -- late purple aster
	Aster phyllolepis Torr. & A. Gray -- not accepted
	Aster pilosus var. platyphyllus (Torr. & A. Gray) S.F. Blake -- not accepted
	Aster ptarmicoides (Nees) Torr. & A. Gray -- not accepted
	Aster puniceus ssp. elliottii (Torr. & A. Gray) A.G. Jones -- not accepted
	Aster puniceus var. elliottii (Torr. & A. Gray) A.G. Jones -- not accepted -- Elliott's aster
	Aster puniceus var. firmus (Nees) Torr. & A. Gray -- not accepted -- purplestem aster
	Aster simplex var. ramosissimus (Torr. & A. Gray) Cronquist -- not accepted
	Aster stricticaulis (Torr. & A. Gray) Rydb. -- not accepted
	Aster tenuifolius var. ramosissimus Torr. & A. Gray -- not accepted
	Aster tortifolius (Torr. & A. Gray) A. Gray non Michx. -- not accepted
	Aster xylorhiza (Nutt.) Torr. & A. Gray -- not accepted
	Astragalus beckwithii Torr. & A. Gray -- accepted -- Beckwith's milkvetch
	Astragalus beckwithii var. beckwithii Torr. & A. Gray -- accepted -- Beckwith's milkvetch
	Astragalus calycosus Torr. ex S. Watson -- accepted -- matted poison milkvetch, mattedmilkvetch, Torrey's milkvetch
	Astragalus calycosus var. calycosus Torr. ex S. Watson -- accepted -- Torrey milkvetch, Torrey's milkvetch
	Astragalus crassicarpus var. trichocalyx (Nutt. ex Torr. & A. Gray) Barneby ex Gleason -- accepted -- groundplum milkvetch, Ozark groundplum
	Astragalus decumbens (Nutt. ex Torr. & A. Gray) A. Gray -- not accepted
	Astragalus distortus Torr. & A. Gray -- accepted -- bentpod milkvetch, Ozark milkvetch
	Astragalus distortus var. distortus Torr. & A. Gray -- accepted -- Ozark milkvetch
	Astragalus douglasii (Torr. & A. Gray) A. Gray -- accepted -- Douglas' milkvetch, Jacumba milkvetch
	Astragalus douglasii var. douglasii (Torr. & A. Gray) A. Gray -- accepted -- Douglas's milkvetch, Jacumba milkvetch
	Astragalus filipes Torr. ex A. Gray -- accepted -- basalt milkvetch, threadstalk milkvetch
	Astragalus flavus Nutt. ex Torr. & A. Gray -- accepted -- yellow milkvetch
	Astragalus fremontii A. Gray ex Torr. -- not accepted
	Astragalus goniatus Nutt. ex Torr. & A. Gray -- not accepted
	Astragalus lentiginosus var. fremontii (A. Gray ex Torr.) S. Watson -- accepted -- Fremont's milkvetch
	Astragalus leptocarpus Torr. & A. Gray -- accepted -- rare loco milkvetch, slimpod milkvetch
	Astragalus leucopsis (Torr. & A. Gray) Torr. -- not accepted
	Astragalus lonchocarpus Torr. -- accepted -- great rushy milkvetch, rushy milkvetch
	Astragalus mexicanus var. trichocalyx (Nutt. ex Torr. & A. Gray) Fernald -- not accepted
	Astragalus miser var. decumbens (Nutt. ex Torr. & A. Gray) Cronquist -- accepted -- prostrate milkvetch
	Astragalus mollissimus Torr. -- accepted -- purple locoweed, woolly loco, woolly locoweed, woolly milkvetch
	Astragalus mollissimus var. mollissimus Torr. -- accepted -- woolly locoweed, woolly milkvetch
	Astragalus neglectus (Torr. & A. Gray) E. Sheld. -- accepted -- Cooper's milk-vetch, Cooper's milkvetch
	Astragalus nuttallianus var. trichocarpus Torr. & A. Gray -- accepted -- hairypod milkvetch, turkey peas, turkeypeas
	Astragalus nuttallii (Torr. & A. Gray) J.T. Howell -- accepted -- Nuttall's milkvetch
	Astragalus nuttallii var. nuttallii (Torr. & A. Gray) J.T. Howell -- accepted -- Nuttall's milkvetch
	Astragalus pachycarpus Torr. & A. Gray -- not accepted
	Astragalus pubentissimus Torr. & A. Gray -- accepted -- Green River milkvetch
	Astragalus pubentissimus var. pubentissimus Torr. & A. Gray -- accepted -- Green River milkvetch
	Astragalus reflexus Torr. & A. Gray -- accepted -- drooping milkvetch
	Astragalus stenophyllis Torr. & A. Gray -- not accepted
	Astragalus stenophyllus Torr. & A. Gray -- not accepted
	Astragalus stenophyllus var. filipes (Torr. ex A. Gray) Tidestr. -- not accepted
	Astragalus trichocalyx Nutt. ex Torr. & A. Gray -- not accepted
	Astragalus trichopodus ssp. leucopsis (Torr. & A. Gray) Thorne -- not accepted
	Astragalus utahensis (Torr.) Torr. & A. Gray -- accepted -- Utah locoweed, Utah milkvetch
	Astragalus viridis (Nutt. ex Torr. & A. Gray) E. Sheld. -- not accepted
	Astragalus whitneyi ssp. hookerianus (Torr. & A. Gray) Abrams -- not accepted
	Atriplex acanthocarpa (Torr.) S. Watson -- accepted -- tubercled saltbush
	Atriplex acanthocarpa ssp. acanthocarpa (Torr.) S. Watson -- not accepted -- tubercled saltbush
	Atriplex acanthocarpa var. acanthocarpa (Torr.) S. Watson -- accepted -- tubercled saltbush
	Atriplex canescens var. angustifolia (Torr.) S. Watson -- not accepted -- fourwing saltbush
	Atriplex canescens var. occidentalis (Torr. & Frém.) S.L. Welsh & Stutz -- not accepted
	Atriplex confertifolia (Torr. & Frém.) S. Watson -- accepted -- shadscale, shadscale saltbush, spiny saltbush
	Atriplex hymenelytra (Torr.) S. Watson -- accepted -- desert holly, desertholly, Yuma desert holly
	Atriplex lentiformis (Torr.) S. Watson -- accepted -- big saltbush, quailbush
	Atriplex lentiformis ssp. lentiformis (Torr.) S. Watson -- not accepted -- big saltbush
	Atriplex phyllostegia (Torr. ex S. Watson) S. Watson -- accepted -- arrow saltbush, arrow saltweed, leafcover saltweed
	Atriplex polycarpa (Torr.) S. Watson -- accepted -- cattle saltbush, desert saltbush
	Atriplex pusilla (Torr. ex S. Watson) S. Watson -- accepted -- smallscale, smooth saltbush
	Atriplex suckleyi (Torr.) Rydb. -- not accepted -- Suckley's orach
	Atriplex truncata (Torr. ex S. Watson) A. Gray -- accepted -- wedgescale saltbush
	Aureolaria grandiflora ssp. serrata (Torr. ex Benth.) Pennell -- not accepted
	Aureolaria grandiflora var. serrata (Torr. ex Benth.) Pennell -- not accepted -- largeflower yellow false foxglove
	Avenastrum pubescens (Huds.) Jess. ex Dalla Torre -- not accepted
	Axonopus repens (P.J. Bergius) Torrend -- not accepted
	Azalea californica Torr. & A. Gray ex Durand -- not accepted
	Azalea occidentalis Torr. & A. Gray ex Torr. -- not accepted
	Baccharis salicina Torr. & A. Gray -- accepted -- Emory's baccharis, Great Plains false willow, Great Plains falsewillow, willow baccharis
	Baccharis texana (Torr. & A. Gray) A. Gray -- accepted -- prairie baccharis, prairie false willow, prairie falsewillow
	Baeria fremontii (Torr. ex A. Gray) A. Gray -- not accepted
	Baptisia lecontei Torr. & A. Gray -- accepted -- pineland wild indigo
	Baptisia leucantha Torr. & A. Gray -- not accepted
	Baptisia megacarpa Chapm. ex Torr. & A. Gray -- accepted -- Apalachicola wild indigo
	Basistelma angustifolia (Torr.) Bartlett, non Cynanchum angustifolium Pers. -- not accepted
	Berberis fremontii Torr. -- accepted -- Fremont's berberis
	Berlandiera dealbata (Torr. & A. Gray) Small -- not accepted
	Berlandiera incisa Torr. & A. Gray -- not accepted
	Berlandiera texana var. bentonicifolia (Hook.) Torr. & A. Gray -- not accepted
	Berlandiera texana var. betonicifolia (Hook.) Torr. & A. Gray -- not accepted
	Berlandiera tomentosa var. dealbata Torr. & A. Gray -- not accepted
	Berula erecta var. incisa (Torr.) Cronquist -- not accepted
	Berula incisa (Torr.) G.N. Jones -- not accepted
	Bidens beckii Torr. ex Spreng. -- accepted -- Beck's water-marigold, Henderson's water-marigold, Oregon water-marigold
	Bidens cernua var. elata Torr. & A. Gray -- not accepted
	Bidens discoidea (Torr. & A. Gray) Britton -- accepted -- discoid beggarticks, small beggarticks, swamp beggar-ticks
	Bidens elata (Torr. & A. Gray) Sherff -- not accepted
	Blepharoneuron tricholepis (Torr.) Nash -- not accepted -- pine dropseed
	Bloomeria crocea (Torr.) Coville -- accepted -- common goldenstar
	Bloomeria crocea var. crocea (Torr.) Coville -- accepted -- common goldenstar
	Boechera brachycarpa (Torr. & A. Gray) Dorn -- not accepted
	Boerhavia anisophylla Torr. -- accepted -- wineflower
	Boerhavia leiosolena Torr. -- not accepted
	Boisduvalia densiflora var. salicina (Nutt. ex Torr. & A. Gray) Munz -- not accepted
	Boisduvalia salicina (Nutt. ex Torr. & A. Gray) Rydb. -- not accepted
	Bolboschoenus fluviatilis (Torr.) Soják -- accepted -- river bulrush
	Bolboschoenus maritimus ssp. fluviatilis (Torr.) Á. Löve & D. Löve -- not accepted
	Boltonia asteroides var. decurrens (Torr. & A. Gray) Fernald -- not accepted
	Boltonia decurrens (Torr. & A. Gray) Alph. Wood -- accepted -- claspingleaf doll's daisy, decurrent false aster
	Boltonia latisquama var. decurrens (Torr. & A. Gray) Fernald & Grisc. -- not accepted
	Bonamia ovalifolia (Torr.) Hallier f. -- accepted -- bigpod bonamia, bigpod lady's nightcap
	Bonamia pickeringii (Torr. ex M.A. Curtis) A. Gray -- not accepted
	Bouchea spathulata Torr. -- accepted -- spoonleaf
	Bouteloua curtipendula (Michx.) Torr. -- accepted -- sideoats grama
	Bouteloua curtipendula var. curtipendula (Michx.) Torr. -- accepted -- side-oats grama, sideoats grama
	Bouteloua eriopoda (Torr.) Torr. -- accepted -- black grama
	Bouteloua foenea (Torr.) Torr. ex S. Watson -- not accepted
	Bouteloua oligostachya (Nutt.) Torr. ex A. Gray -- not accepted
	Bouteloua pappilosa (Engelm.) Torr. -- not accepted
	Bouteloua polystachya (Benth.) Torr. -- not accepted
	Bouteloua polystachya var. polystachya (Benth.) Torr. -- not accepted
	Boykinia jamesii (Torr.) Engl. -- not accepted -- James' telesonix
	Boykinia occidentalis Torr. & A. Gray -- accepted -- coast boykinia, coastal brookfoam
	Brachiaria fasciculata var. reticulata (Torr.) Vickery -- not accepted
	Brachiaria fasciculata var. reticulata (Torr.) Beetle -- not accepted
	Bradburia Torr. & A.Gray -- accepted -- bradburia
	Bradburia hirtella Torr. & A. Gray -- accepted -- Texas chrysopsis
	Breweria ovalifolia (Torr.) A. Gray -- not accepted
	Breweria pickeringii (Torr. ex M.A. Curtis) A. Gray -- not accepted
	Brickellia californica (Torr. & A. Gray) A. Gray -- accepted -- California brickellbush, Jepson's brickellbush
	Brickellia californica var. californica (Torr. & A. Gray) A. Gray -- not accepted -- California brickellbush
	Brickellia eupatorioides var. corymbulosa (Torr. & A. Gray) Shinners -- accepted -- false boneset
	Brickellia eupatorioides var. gracilis (Torr. & Gray) Kartesz & Gandhi -- not accepted
	Brizopyrum spicatum var. strictum (Torr.) A. Gray ex S. Watson -- not accepted
	Brodiaea coronaria var. macropoda (Torr.) Hoover -- not accepted
	Brodiaea pulchella var. pauciflora (Torr.) C.V. Morton -- not accepted
	Bromus breviaristatus (Hook.) Thurb. ex Torr. -- not accepted
	Bromus kalmii var. aristulatus Torr. -- not accepted
	Browallia texana Torr. -- not accepted
	Buckleya Torr. -- accepted
	Buckleya distichophylla (Nutt.) Torr. -- accepted -- piratebush
	Buddleja racemosa Torr. -- accepted -- Texas butterflybush, wand butterflybush
	Buddleja racemosa ssp. incana (Torr.) Norm. -- not accepted -- wand butterflybush
	Buddleja racemosa ssp. racemosa Torr. -- not accepted -- wand butterflybush
	Buddleja racemosa var. incana Torr. -- accepted -- wand butterflybush
	Buddleja racemosa var. racemosa Torr. -- accepted -- wand butterflybush
	Bulbostylis californica Torr. & Gray -- not accepted
	Bulbostylis warei (Torr.) C.B. Clarke -- accepted -- Ware's hairsedge
	Cacalia diversifolia Torr. & A. Gray -- not accepted
	Caesalpinia drummondii (Torr. & A. Gray) Fisher -- not accepted -- dwarf nicker
	Caesalpinia jamesii (Torr. & A. Gray) Fisher -- not accepted -- James' holdback, James' rushpea
	Caiandra schottii Torr. ex S. Watson -- not accepted
	Calamagrostis brevipilis (Torr.) L.C. Beck -- not accepted
	Calamagrostis coarctata Torr. ex Eaton -- accepted -- arctic reedgrass
	Calamintha canescens Torr. & A. Gray ex Benth. -- not accepted
	Calamintha glabella var. angustifolia (Torr.) DeWolf -- not accepted
	Calamovilfa brevipilis (Torr.) Hack. ex Scribn. & Southw. -- accepted -- pine barren sandreed
	Calamovilfa brevipilis var. brevipilis (Torr.) Hack. ex Scribn. & Southw. -- not accepted
	Calliandra schottii Torr. ex S. Watson -- not accepted -- Schott false mesquite, Schott's stickpea
	Callirhoe involucrata (Torr. & A. Gray) A. Gray -- accepted -- low poppymallow, purple poppy mallow, purple poppymallow, winecup
	Callirhoe involucrata var. involucrata (Torr. & A. Gray) A. Gray -- accepted -- purple poppy mallow, purple poppymallow
	Callirhoe involucrata var. lineariloba (Torr. & A. Gray) A. Gray -- accepted -- purple poppymallow
	Callisia micrantha (Torr.) D.R. Hunt -- accepted -- littleflower roseling
	Callitriche marginata Torr. -- accepted -- winged water-starwort
	Callitriche nuttallii Torr. -- not accepted -- Nuttall's waterstarwort
	Calocedrus decurrens (Torr.) Florin -- accepted -- incense cedar
	Calochortus nuttallii Torr. & A. Gray -- accepted -- sego lily, sego-lily
	Calophanes linearis (Torr. & A. Gray) A. Gray -- not accepted
	Caltha palustris var. flabellifolia (Pursh) Torr. & A. Gray -- not accepted
	Calycadenia tenella (Nutt.) Torr. & A. Gray -- not accepted
	Calycanthus floridus var. glaucus (Willd.) Torr. & A. Gray -- accepted -- eastern sweetshrub
	Calycanthus floridus var. laevigatus (Willd.) Torr. & A. Gray -- not accepted
	Calylophus hartwegii ssp. lavandulifolius (Torr. & A. Gray) Towner & P.H. Raven -- not accepted
	Calylophus hartwegii var. lavandulifolius (Torr. & A. Gray) Shinners -- not accepted
	Calylophus lavandulifolius (Torr. & A. Gray) P.H. Raven -- not accepted -- lavender calylophus, lavender sundrop, lavenderleaf eveningprimrose, lavenderleaf sundrops
	Calylophus serrulatus var. spinulosus (Nutt. ex Torr. & A. Gray) Shinners -- not accepted
	Calymmandra candida Torr. & A. Gray -- not accepted
	Calyptridium umbellatum (Torr.) Greene -- not accepted
	Calyptridium umbellatum var. umbellatum (Torr.) Greene -- not accepted
	Calytophus lavandulifolius (Torr. & A. Gray) P.H. Raven -- not accepted
	Camissonia bistorta (Nutt. ex Torr. & A. Gray) P.H. Raven -- not accepted -- southern suncup
	Camissonia breviflora (Torr. & A. Gray) P.H. Raven -- not accepted -- fewflower evening primrose, fewflower evening-primrose, shortflower suncup
	Camissonia californica (Nutt. ex Torr. & A. Gray) P.H. Raven -- not accepted -- California primrose, California suncup
	Camissonia cardiophylla (Torr.) P.H. Raven -- not accepted -- heart-leaf suncup, heartleaf suncup
	Camissonia cardiophylla ssp. cardiophylla (Torr.) P.H. Raven -- not accepted -- heartleaf suncup
	Camissonia claviformis (Torr. & Frém.) P.H. Raven -- not accepted -- browneyes, clavatefruit suncup
	Camissonia claviformis ssp. claviformis (Torr. & Frém.) P.H. Raven -- not accepted -- browneyes
	Camissonia ovata (Nutt. ex Torr. & A. Gray) P.H. Raven -- not accepted -- goldeneggs
	Camissonia parvula (Nutt. ex Torr. & A. Gray) P.H. Raven -- accepted -- Lewis River suncup
	Camissonia scapoidea (Torr. & A. Gray) P.H. Raven -- not accepted -- barestem eveningprimrose, Paiute suncup, scapoid suncup
	Camissonia scapoidea ssp. scapoidea (Torr. & A. Gray) P.H. Raven -- not accepted -- Paiute suncup, Seorsa evening primrose, Seorsa eveningprimrose
	Camissonia tanacetifolia (Torr. & A. Gray) P.H. Raven -- not accepted -- tansyleaf evening primrose, tansyleaf evening-primrose, tansyleaf suncup
	Camissonia tanacetifolia ssp. tanacetifolia (Torr. & A. Gray) P.H. Raven -- not accepted -- tansyleaf evening primrose, tansyleaf evening-primrose, tansyleaf suncup
	Camissoniopsis bistorta (Nutt. ex Torr. & A. Gray) W.L. Wagner & Hoch -- accepted -- southern suncup
	Canotia Torr. -- accepted
	Canotia holacantha Torr. -- accepted -- crucifixion thorn
	Cardamine oligosperma var. lucens G.S. Torr. -- not accepted
	Carduus lecontei (Torr. & A. Gray) Pollard -- not accepted
	Carex alata Torr. -- accepted -- broadwing sedge
	Carex albicans var. emmonsii (Dewey ex Torr.) Rettig -- accepted -- Emmons' sedge
	Carex barrattii Schwein. & Torr. -- accepted -- Barratt's sedge
	Carex bigelowii Torr. ex Schwein. -- accepted -- Bigelow's sedge
	Carex bigelowii ssp. bigelowii Torr. ex Schwein. -- accepted -- Bigelow's sedge
	Carex careyana Torr. ex Dewey -- accepted -- Carey's sedge
	Carex complanata Torr. & Hook. -- accepted -- blue sedge, hirsute sedge
	Carex crinita var. gynandra (Schwein.) Schwein. & Torr. -- not accepted
	Carex davisii Schwein. & Torr. -- accepted -- Davis' sedge
	Carex elliottii Schwein. & Torr. -- accepted -- Elliott's sedge
	Carex emmonsii Dewey ex Torr. -- not accepted
	Carex houghtoniana Torr. ex Dewey -- accepted -- Houghton's sedge
	Carex houghtonii Torr. ex Dewey -- not accepted
	Carex houstonii Torr. -- accepted -- Houston's sedge
	Carex microdonta Torr. & Hook. -- accepted -- littletooth sedge
	Carex oxylepis Torr. & Hook. -- accepted -- sharpscale sedge
	Carex oxylepis var. oxylepis Torr. & Hook. -- not accepted -- sharpscale sedge
	Carex retroflexa var. texensis (Torr.) Fernald -- not accepted
	Carex texensis (Torr.) L.H. Bailey -- accepted -- Texas sedge
	Carex turgescens Torr. -- accepted -- pine barren sedge, pinebarren sedge
	Carlowrightia linearifolia (Torr.) A. Gray -- accepted -- heath wrightwort
	Carpenteria Torr. -- accepted -- tree anemone
	Carpenteria californica Torr. -- accepted -- tree anemone
	Carphephorus bellidifolius (Michx.) Torr. & A. Gray -- accepted -- sandywoods chaffhead
	Carphephorus corymbosus (Nutt.) Torr. & A. Gray -- accepted -- coastal plain chaffhead, coastalplain chaffhead
	Carphephorus tomentosus (Michx.) Torr. & A. Gray -- accepted -- woolly chaffhead
	Caryopitys monophylla (Torr. & Frém.) Rydb. -- not accepted
	Castela erecta ssp. texana (Torr. & A. Gray) Cronquist -- not accepted -- allthorn goatbush, Texan goatbush
	Castela texana (Torr. & A. Gray) Rose -- accepted
	Castilleja occidentalis Torr. -- accepted -- western Indian paintbrush
	Caulanthus crassicaulis (Torr.) S. Watson -- accepted -- thick-stem wild cabbage, thickstem wild cabbage, thickstem wildcabbage
	Caulanthus crassicaulis var. crassicaulis (Torr.) S. Watson -- not accepted -- thick-stem wild cabbage, thickstem wild cabbage, thickstem wildcabbage
	Cayaponia boykinii (Torr. & A. Gray) Cogn. -- not accepted
	Cayaponia grandifolia (Torr. & A. Gray) Small -- not accepted
	Ceanothus americanus var. intermedius (Pursh) Torr. & A. Gray -- not accepted
	Ceanothus americanus var. pitcheri Torr. & A. Gray -- not accepted
	Ceanothus crassifolius Torr. -- accepted -- hoaryleaf ceanothus
	Ceanothus dentatus Torr. & A. Gray -- accepted -- sandscrub ceanothus
	Ceanothus herbaceus var. pubescens (Torr. & A. Gray ex S. Watson) Shinners -- not accepted
	Ceanothus incanus Torr. & A. Gray -- accepted -- coast whitethorn
	Ceanothus integerrimus var. macrothyrsus (Torr.) G.T. Benson -- not accepted
	Ceanothus ovatus var. pubescens Torr. & A. Gray ex S. Watson -- not accepted
	Ceanothus papillosus Torr. & A. Gray -- accepted -- wartleaf ceanothus
	Ceanothus papillosus ssp. papillosus Torr. & A. Gray -- not accepted -- King hybrid ceanothus
	Ceanothus papillosus var. papillosus Torr. & A. Gray -- accepted -- wartleaf ceanothus
	Ceanothus prostratus var. grandiflorus (Torr.) Jeps. -- not accepted
	Ceanothus pubescens (Torr. & A. Gray ex S. Watson) Rydb. ex Small -- not accepted
	Ceanothus rigidus var. grandiflorus Torr. -- not accepted
	Ceanothus velutinus var. laevigatus Torr. & A. Gray -- not accepted
	Celtis laevigata var. reticulata (Torr.) L.D. Benson -- not accepted -- netleaf hackberry
	Celtis occidentalis var. reticulata (Torr.) Sarg. -- not accepted
	Celtis pallida Torr. -- accepted -- desert hackberry, granjeno, spiny hackberry
	Celtis reticulata Torr. -- accepted -- netleaf hackberry, palo blanco
	Celtis spinosa var. pallida (Torr.) M.C. Johnst. -- not accepted
	Celtis tala var. pallida (Torr.) Planch. -- not accepted
	Cenchrus echinatus var. tribuloides (L.) Torr. -- not accepted
	Centaurium beyrichii (Torr. & A. Gray ex Torr.) B.L. Rob. -- not accepted -- mountain pink, quinineweed, rock centaury
	Centaurium beyrichii var. beyrichii (Torr. & A. Gray ex Torr.) B.L. Rob. -- not accepted -- quinineweed
	Cerastium arvense var. oblongifolium (Torr.) Hollick & Britton -- not accepted
	Cerastium oblongifolium Torr. -- not accepted
	Ceratozamia euryphyllidia Vázq. Torres, Sabato & D.W. Stev. -- accepted
	Ceratozamia morettii Vázq. Torres & Vovides -- accepted
	Ceratozamia sabatoi Vovides, Vázq. Torres, Schutzman & Iglesias -- accepted
	Cercidium microphyllum (Torr.) Rose & I.M. Johnst. -- not accepted
	Cercis occidentalis Torr. ex A. Gray -- accepted -- California redbud
	Cereus californicus Torr. & A. Gray -- not accepted
	Chaenactis glabriuscula var. heterocarpha (Torr. & A. Gray ex A. Gray) H.M. Hall -- accepted -- yellow pincushion
	Chaenactis heterocarpha Torr. & A. Gray ex A. Gray -- not accepted
	Chaerophyllum procumbens var. shortii Torr. & A. Gray -- accepted -- Short's spreading chervil
	Chaerophyllum shortii (Torr. & A. Gray) Bush -- not accepted
	Chaetaria fasciculata (Torr.) Schult. -- not accepted
	Chaetopappa ericoides (Torr.) G.L. Nesom -- accepted -- rose heath, smallflower aster
	Chamaebatiaria millefolium (Torr.) Maxim. -- accepted -- desert sweet, fernbush
	Chamaesyce albomarginata (Torr. & A. Gray) Small -- not accepted -- rattlesnake weed, whitemargin euphorbia, whitemargin sandmat, whitemargin spurge
	Chamaesyce fendleri (Torr. & A. Gray) Small -- not accepted -- Fendler's sandmat
	Chamaesyce fendleri var. fendleri (Torr. & A. Gray) Small -- not accepted -- Fendler's sandmat
	Chamaesyce hirsuta (Torr.) Arthur -- not accepted
	Chamaesyce melanadenia (Torr. & A. Gray) Millsp. -- not accepted -- prostrate spurge, red-gland spurge, squaw sandmat
	Chamaesyce setiloba (Engelm. ex Torr.) Millsp. -- not accepted -- Yuma sandmat, Yuma spurge
	Chamaesyce setiloba (Engelm. ex Torr.) Norton -- not accepted
	Chapmannia Torr. & A. Gray -- accepted
	Chapmannia floridana Torr. & A. Gray -- accepted -- Florida alicia
	Chenopodium hybridum var. simplex Torr. -- not accepted
	Chenopodium simplex (Torr.) Raf. -- accepted -- giant-seed goosefoot, mapleleaf goosefoot
	Chimaphila maculata var. dasystemma (Torr. ex Rydb.) Kearney & Peebles -- not accepted
	Chiogenes hispidula (L.) Torr. & A. Gray -- not accepted
	Chloris alba var. aristulata Torr. -- not accepted
	Chloris verticillata var. aristulata Torr. & A. Gray -- not accepted
	Choisya dumosa (Torr.) A. Gray -- accepted -- Mexican orange, starleaf
	Choisya dumosa var. dumosa (Torr.) A. Gray -- accepted -- Mexican orange
	Chondrophylla fremontii (Torr.) A. Nelson -- not accepted
	Chondrosium eriopodum Torr. -- not accepted
	Chondrosum eriopodum Torr. -- not accepted
	Chondrosum foeneum Torr. -- not accepted
	Chondrosum oligostachyum (Nutt.) Torr. -- not accepted
	Chondrosum papillosum (Engelm.) Torr. -- not accepted
	Chorizanthe brevicornu Torr. -- accepted -- brittle spineflower, sagebrush chorizanthe
	Chorizanthe brevicornu var. brevicornu Torr. -- accepted -- brittle spineflower
	Chorizanthe corrugata (Torr.) Torr. & A. Gray -- accepted -- wrinkled chorizanthe, wrinkled spineflower
	Chorizanthe fimbriata var. laciniata (Torr.) Jeps. -- accepted -- fringed spineflower
	Chorizanthe laciniata Torr. -- not accepted
	Chorizanthe polygonoides Torr. & A. Gray -- accepted -- knotweed spineflower
	Chorizanthe polygonoides var. polygonoides Torr. & A. Gray -- accepted -- knotweed spineflower
	Chorizanthe rigida (Torr.) Torr. & A. Gray -- accepted -- devil's spineflower, spiny chorizanthe, turkshead
	Chorizanthe uniaristata Torr. & A. Gray -- accepted -- oneawn spineflower
	Chorizanthe watsonii Torr. & A. Gray -- accepted -- five-tooth spineflower, fivetooth spineflower, Watson's chorizanthe
	Chrysamphora californica (Torr.) Greene -- not accepted
	Chrysopsis canescens (DC.) Torr. & A. Gray non DC. -- not accepted
	Chrysopsis oligantha Chapm. ex Torr. & A. Gray -- not accepted
	Chrysopsis scabrella Torr. & A. Gray -- accepted -- coastal plain goldenaster, coastalplain goldenaster
	Chylismia (Nutt. ex Torr. & A. Gray) Raim. -- accepted
	Chylismia cardiophylla (Torr.) Small -- accepted -- heartleaf suncup
	Chylismia cardiophylla ssp. cardiophylla (Torr.) Small -- accepted -- heartleaf suncup
	Chylismia claviformis (Torr. & Frém.) A. Heller -- accepted -- browneyes
	Chylismia claviformis ssp. claviformis (Torr. & Frém.) A. Heller -- accepted -- browneyes
	Chylismia scapoidea (Torr. & A. Gray) Small -- not accepted -- Paiute suncup
	Chylismia scapoidea (Torr. & A. Gray) Nutt. ex Raim. -- accepted
	Chylismia scapoidea ssp. scapoidea (Torr. & A. Gray) Nutt. ex Raim. -- accepted
	Chylismia scapoidea ssp. scapoidea (Torr. & A. Gray) Small -- not accepted -- Paiute suncup
	Cimicifuga cordifolia (DC.) Torr. & A. Gray -- not accepted
	Ciminalis fremontii (Torr.) W.A. Weber -- not accepted
	Cirsium drummondii Torr. & A. Gray -- accepted -- dwarf thistle
	Cirsium horridulum var. elliottii Torr. & A. Gray -- not accepted
	Cirsium lecontei Torr. & A. Gray -- accepted -- Le Conte's thistle
	Cirsium pitcheri (Torr. ex Eaton) Torr. & A. Gray -- accepted -- Pitcher's thistle, sand dune thistle
	Cistanthe umbellata (Torr.) Hershk. -- accepted -- Mt. Hood pussypaws, umbellate pussypaws
	Cistanthe umbellata var. umbellata (Torr.) Hershk. -- not accepted -- Mt. Hood pussypaws, pussypaws
	Cladium mariscoides (Muhl.) Torr. -- accepted -- smooth sawgrass
	Clarkia epilobioides (Nutt. ex Torr. & A. Gray) A. Nelson & J.F. Macbr. -- accepted -- canyon clarkia, canyon fairyfan
	Clarkia heterandra (Torr.) F.H. Lewis & P.H. Raven -- accepted -- mountain clarkia
	Claytonia exigua Torr. & A. Gray -- accepted -- serpentine springbeauty
	Claytonia exigua ssp. exigua Torr. & A. Gray -- accepted -- serpentine springbeauty
	Claytonia exigua ssp. glauca (Torr. & A. Gray) John M. Mill. & K.L. Chambers -- accepted -- serpentine springbeauty
	Claytonia heterophylla (Torr. & A. Gray) Swanson -- not accepted -- variableleaf springbeauty
	Claytonia lanceolata var. sessilifolia (Torr.) A. Nelson -- not accepted -- lanceleaf springbeauty
	Claytonia parviflora var. glauca Nutt. ex Torr. & A. Gray -- not accepted
	Claytonia perfoliata var. parviflora (Douglas ex Hook.) Torr. -- not accepted
	Claytonia sibirica var. heterophylla (Torr. & A. Gray) A. Gray -- not accepted
	Claytonia spathulata var. exigua (Torr. & A. Gray) Hook. & Arn. -- not accepted
	Claytonia spathulata var. tenuifolia Torr. & A. Gray -- not accepted
	Clematis baldwinii Torr. & A. Gray -- accepted -- pine hyacinth
	Clematis baldwinii var. baldwinii Torr. & A. Gray -- not accepted -- pine hyacinth
	Clematis bigelovii Torr. -- accepted -- Bigelow's clematis, Bigelow's leather flower
	Clematis columbiana (Nutt.) Torr. & A. Gray -- accepted -- Columbian virgin's-bower, rock clematis
	Clematis columbiana var. columbiana (Nutt.) Torr. & A. Gray -- accepted -- Columbian virginsbower, rock clematis
	Clematis drummondii Torr. & A. Gray -- accepted -- Drummond's clematis, old man's beard
	Clematis pitcheri Torr. & A. Gray -- accepted -- bluebill, Pitcher's clematis, Pitcher's virginsbower
	Clematis pitcheri var. pitcheri Torr. & A. Gray -- accepted -- bluebill, Pitcher's clematis
	Cleome platycarpa Torr. -- not accepted -- broadpod cleome, golden spiderflower
	Cleome tenuifolia Leconte ex Torr. & A. Gray (pro. syn.) -- not accepted
	Cleomella angustifolia Torr. -- accepted -- narrowleaf rhombopod
	Cleomella longipes Torr. -- accepted -- Chiricahua Mountain stinkweed
	Cleomella obtusifolia Torr. & Frém. -- accepted -- Mojave cleomella, Mojave stinkweed
	Clintonia andrewsiana Torr. -- accepted -- Andrew's clintonia
	Cnidoscolus angustidens Torr. -- accepted -- mala mujer
	Coelostylis Torr. & A. Gray -- not accepted
	Coelostylis loganioides Torr. & A. Gray ex Endl. & Fenzl -- not accepted
	Cogswellia daucifolia (Torr. & A. Gray) M.E. Jones -- not accepted
	Cogswellia macrocarpa (Nutt. ex Torr. & A. Gray) M.E. Jones -- not accepted
	Coldenia greggii (Torr. & A. Gray) A. Gray -- not accepted
	Coldenia hispidissima (Torr. & A. Gray) A. Gray -- not accepted
	Coldenia plicata (Torr.) Coville -- not accepted
	Coleataenia longifolia (Torr.) Soreng -- accepted
	Coleataenia longifolia ssp. longifolia (Torr.) Soreng -- accepted
	Coleogyne Torr. -- accepted -- blackbrush
	Coleogyne ramosissima Torr. -- accepted -- blackbrush
	Colubrina texensis (Torr. & A. Gray) A. Gray -- accepted -- Texan hogplum, Texas colubrina
	Colubrina texensis var. texensis (Torr. & A. Gray) A. Gray -- accepted -- Texan hogplum
	Comandra umbellata var. angustifolia (A. DC.) Torr. -- not accepted
	Comarella multifoliolata (Torr.) Rydb. -- not accepted
	Commelina anomala (Torr.) Woodson -- not accepted
	Commelina dianthifolia var. longispatha (Torr.) Brashier -- not accepted -- birdbill dayflower
	Commelina linearis var. longispatha Torr. -- not accepted
	Commelinantia anomala (Torr.) Tharp -- not accepted
	Condalia obtusifolia (Hook. ex Torr. & A. Gray) Weberb. -- not accepted
	Condalia parryi (Torr.) Weberb. -- not accepted
	Condaliopsis parryi (Torr.) Suess. -- not accepted
	Conradina canescens (Torr. & A. Gray ex Benth.) A. Gray -- accepted -- false rosemary
	Coptis occidentalis (Nutt.) Torr. & A. Gray -- accepted -- Idaho goldthread
	Cordia podocephala Torr. -- accepted -- Texas manjack
	Corema conradii (Torr.) Torr. ex Loudon -- accepted -- broom crowberry, corème de Conrad, poverty-grass
	Coreopsis cardaminefolia (DC.) Torr. & A. Gray -- not accepted
	Coreopsis drummondii (D. Don) Torr. & A. Gray -- not accepted
	Coreopsis grandiflora var. longipes (Hook.) Torr. & A. Gray -- not accepted -- largeflower tickseed
	Coreopsis leavenworthii Torr. & A. Gray -- accepted -- Leavenworth's tickseed
	Corethrogyne tomentella (Hook. & Arn.) Torr. & A. Gray -- not accepted
	Coriflora baldwinii (Torr. & A. Gray) W.A. Weber -- not accepted
	Coriflora bigelovii (Torr.) W.A. Weber -- not accepted
	Coriflora pitcheri (Torr. & A. Gray) W.A. Weber -- not accepted
	Cornus alba var. occidentalis (Torr. & A. Gray) B. Boivin -- not accepted
	Cornus occidentalis (Torr. & A. Gray) Coville -- not accepted
	Cornus sericea ssp. occidentalis (Torr. & A. Gray) Fosberg -- accepted -- western dogwood
	Cornus sessilis Torr. ex Durand -- accepted -- blackfruit dogwood
	Cornus stolonifera var. occidentalis (Torr. & A. Gray) C.L. Hitchc. -- not accepted
	Cowania ericifolia Torr. ex A. Gray -- not accepted
	Cowania mexicana var. stansburiana (Torr.) Jeps. -- not accepted
	Cowania mexicana var. stansburyana (Torr.) Jeps. -- not accepted
	Cowania stansburiana Torr. -- not accepted
	Cowania stansburyana Torr. -- not accepted
	Crassula drummondii sensu (Torr. & A. Gray) Fedde -- not accepted -- smallleaf pygmyweed
	Crassula drummondii (Torr. & A. Gray) Fedde -- accepted -- small-leaf pygmyweed, smallleaf pygmyweed
	Crataegus aestivalis (Walter) Torr. & A. Gray -- accepted -- may hawthorn
	Crataegus berberifolia Torr. & A. Gray -- accepted -- barberry hawthorn, barberry-leaved hawthorn
	Crataegus berberifolia var. berberifolia Torr. & A. Gray -- accepted -- barberry hawthorn
	Crataegus mollis (Torr. & A. Gray) Scheele -- accepted -- Arnold hawthorn, downy hawthorn, red hawthorn
	Crataegus mollis var. mollis (Torr. & A. Gray) Scheele -- accepted -- downy hawthorn
	Crataegus nudiflora Nutt. ex Torr. & A. Gray -- not accepted
	Crepis glauca (Nutt.) Torr. & A. Gray -- not accepted
	Crepis runcinata (James) Torr. & A. Gray -- accepted -- dandelion hawksbeard, fiddle-leaf hawk's-beard, fiddle-leaf hawksbeard, fiddleleaf hawksbeard
	Crepis runcinata ssp. runcinata (James) Torr. & A. Gray -- accepted -- dandelion hawksbeard, fiddle-leaf hawk's-beard, fiddleleaf hawksbeard
	Cristatella jamesii Torr. & A. Gray -- not accepted
	Croftia parvifolia (Torr.) Small -- not accepted
	Crookea microsepala (Torr. & A. Gray) Small -- not accepted
	Croomia Torr. -- accepted -- croomia
	Croomia pauciflora (Nutt.) Torr. -- accepted -- croomia
	Croptilon divaricatum var. hookerianum (Torr. & A. Gray) Shinners -- not accepted
	Croptilon hookerianum (Torr. & A. Gray) House -- accepted -- Hooker's scratchdaisy
	Croptilon hookerianum var. hookerianum (Torr. & A. Gray) House -- accepted -- Hooker's scratchdaisy
	Croton arenosus Carn.-Torres & Cordeiro -- accepted
	Croton berlandieri Torr. -- not accepted
	Croton fruticulosus Torr. -- accepted -- bush croton, encinilla, hierba loca, shrubby croton
	Croton glandulosobracteatus Carn.-Torres & Cordeiro -- accepted
	Croton harleyi Carn.-Torres & Cordeiro -- accepted
	Croton sonorae Torr. -- accepted -- Sonoran croton
	Croton suaveolens Torr. -- accepted -- scented croton
	Croton suaveolens var. oblongifolius Torr. -- not accepted
	Croton trichocarpus Torr. -- not accepted
	Crusea tricocca (Torr. & A. Gray) A. Heller -- not accepted
	Cryptantha angustifolia (Torr.) Greene -- accepted -- bristlelobe cryptantha, narrowleaf pick-me-not, Panamint catseye, Panamint cryptantha
	Cryptantha cinerea var. jamesii (Torr.) Cronquist -- accepted -- James' catseye, James' cryptantha
	Cryptantha crassisepala (Torr. & A. Gray) Greene -- accepted -- deertongue, thick-sepal catseye, thicksepal cryptantha
	Cryptantha crassisepala var. crassisepala (Torr. & A. Gray) Greene -- accepted -- thicksepal catseye, thicksepal cryptantha
	Cryptantha jamesi (Torr.) Payson -- not accepted
	Cryptantha jamesii (Torr.) Payson -- not accepted
	Cryptantha jamesii var. multicaulis (Torr.) Payson -- not accepted
	Cryptantha micrantha (Torr.) I.M. Johnst. -- accepted -- purpleroot pick-me-not, redroot catseye, redroot cryptantha
	Cryptantha micrantha var. micrantha (Torr.) I.M. Johnst. -- accepted -- redroot catseye, redroot cryptantha
	Cryptantha pterocarya (Torr.) Greene -- accepted -- winged pick-me-not, wingnut catseye, wingnut cryptantha
	Cryptantha pterocarya var. pterocarya (Torr.) Greene -- accepted -- wingnut catseye, wingnut cryptantha
	Cryptantha pusilla (Torr. & A. Gray) Greene -- accepted -- low catseye, low cryptantha
	Cucurbita californica Torr. ex S. Watson -- not accepted
	Cyanococcus vacillans (Kalm ex Torr.) Rydb. -- not accepted
	Cyclanthera dissecta (Torr. & A. Gray) Arn. -- accepted -- cut-leaf cyclanthera, cutleaf cyclanthera
	Cylindropuntia californica (Torr. & A. Gray) F.M. Knuth -- accepted
	Cylindropuntia californica var. californica (Torr. & A. Gray) F.M. Knuth -- accepted
	Cymopterus montanus Nutt. ex Torr. & A. Gray -- accepted -- Montana wavewing, mountain springparsley
	Cymopterus terebinthinus (Hook.) Torr. & A. Gray -- not accepted
	Cymopterus terebinthinus var. albiflorus (Torr. & A. Gray) M.E. Jones -- not accepted
	Cymopterus terebinthinus var. foeniculaceus (Nutt. ex Torr. & A. Gray) Cronquist -- not accepted
	Cynoctonum angustifolium (Torr. & A. Gray) Small -- not accepted
	Cynoctonum sessilifolium var. angustifolium Torr. & A. Gray -- not accepted
	Cyperus acuminatus Torr. & Hook. ex Torr. -- accepted -- taper-tip flat sedge, taperleaf flatsedge, tapertip flatsedge
	Cyperus bipartitus Torr. -- accepted -- brook flatsedge, shining flat sedge, slender flatsedge
	Cyperus cephalanthus Torr. & Hook. -- accepted -- buttonbush flatsedge
	Cyperus dentatus Torr. -- accepted -- toothed flatsedge
	Cyperus diandrus Torr. -- accepted -- umbrella flat sedge, umbrella flatsedge
	Cyperus dissitiflorus Nees ex Torr. -- not accepted
	Cyperus drummondii Torr. & Hook. -- accepted -- Drummond's sedge
	Cyperus grayi Torr. -- accepted -- Gray's flatsedge
	Cyperus halei Torr. ex Britton -- not accepted
	Cyperus houghtonii Torr. -- accepted -- Houghton's flatsedge
	Cyperus lecontei Torr. ex Steud. -- accepted -- Le Conte's flatsedge
	Cyperus lutescens Torr. & Hook. -- not accepted
	Cyperus microdontus Torr. -- not accepted
	Cyperus ovularis (Michx.) Torr. -- not accepted
	Cyperus ovularis var. cylindricus (Elliott) Torr. -- not accepted
	Cyperus polystachyos var. texensis (Torr.) Fernald -- not accepted -- Texan flatsedge
	Cyperus retrofractus (L.) Torr. -- accepted -- rough flatsedge
	Cyperus schweinitzii Torr. -- accepted -- sand flat sedge, schweinitz flatsedge, Schweinitz's flatsedge
	Cyperus sesquiflorus (Torr.) Mattf. & Kük. -- not accepted
	Cyperus setigerus Torr. & Hook. -- accepted -- lean flatsedge
	Cyperus stenolepis Torr. -- not accepted
	Cyperus strigosus var. stenolepis (Torr.) Kük. -- not accepted
	Cyperus uniflorus Torr. & Hook., non Thunb. -- not accepted
	Cyperus virens var. drummondii (Torr. & Hook.) Kük. -- not accepted -- Drummond's flatsedge
	Dalea arborescens Torr. ex A. Gray -- not accepted
	Dalea candida var. oligophylla (Torr.) Shinners -- accepted -- white dalea, white prairie clover, white prairie-clover, white prairieclover
	Dalea carnea var. albida (Torr. & A. Gray) Barneby -- accepted -- whitetassels
	Dalea emarginata (Torr. & A. Gray) Shinners -- accepted -- wedgeleaf prairie clover, wedgeleaf prairieclover
	Dalea formosa Torr. -- accepted -- feather dalea, featherplume, feathery dalea
	Dalea fremontii Torr. ex A. Gray -- not accepted
	Dalea jamesii (Torr.) Torr. & A. Gray -- accepted -- James' dalea, James' prairie clover, James' prairieclover
	Dalea nana Torr. ex A. Gray -- accepted -- dwarf dalea, dwarf prairie clover, dwarf prairie-clover, dwarf prairieclover
	Dalea nana var. nana Torr. ex A. Gray -- accepted -- dwarf prairie clover, dwarf prairieclover
	Dalea obovata (Torr. & A. Gray) Shinners -- accepted -- pussyfoot
	Dalea oligophylla (Torr.) Shinners -- not accepted
	Dalea parryi Torr. & A. Gray -- not accepted
	Dalea phleoides (Torr. & A. Gray) Shinners -- accepted -- slimspike prairie clover, slimspike prairieclover
	Dalea phleoides var. microphylla (Torr. & A. Gray) Barneby -- accepted -- slimspike prairie clover, slimspike prairieclover
	Dalea phleoides var. phleoides (Torr. & A. Gray) Shinners -- accepted -- slimspike prairie clover, slimspike prairieclover
	Dalea polydenia Torr. ex S. Watson -- not accepted
	Dalea schottii Torr. -- not accepted
	Dalea villosa var. grisea (Torr. & A. Gray) Barneby -- accepted -- silky prairie clover, silky prairieclover
	Damasonium californicum Torr. -- accepted -- California damsonium
	Darlingtonia Torr. -- accepted -- California pitcherplant
	Darlingtonia californica Torr. -- accepted -- calf's head, California pitcherplant, cobra lily, cobra plant
	Darlingtonia californica f. californica Torr. -- not accepted
	Darlingtonia rediviva Torr. -- not accepted
	Darmera peltata (Torr. ex Benth.) Voss -- accepted -- Indian rhubarb
	Dasistoma serrata (Torr. ex Benth.) Small -- not accepted
	Datura innoxia var. quinquecuspidata (Torr.) A.S. Barclay -- not accepted
	Datura inoxia ssp. quinquecuspida (Torr.) A.S. Barclay -- not accepted -- pricklyburr
	Datura metel var. quinquecuspida Torr. -- not accepted
	Datura stramonium var. tatula (L.) Torr. -- not accepted
	Decodon verticillatus var. laevigatus Torr. & A. Gray -- not accepted
	Delphinium californicum Torr. & A. Gray -- accepted -- California larkspur
	Delphinium californicum ssp. californicum Torr. & A. Gray -- accepted -- California larkspur
	Delphinium nudicaule Torr. & A. Gray -- accepted -- red larkspur
	Delphinium variegatum Torr. & A. Gray -- accepted -- royal larkspur
	Delphinium variegatum ssp. variegatum Torr. & A. Gray -- accepted -- royal larkspur
	Desmanthus leptolobus Torr. & A. Gray -- accepted -- prairie bundleflower, slenderlobe bundleflower
	Desmodium bracteosum var. longifolium (Torr. & A. Gray) B.L. Rob. -- not accepted
	Desmodium canescens var. villosissimum Torr. & A. Gray -- not accepted
	Desmodium cuspidatum var. longifolium (Torr. & A. Gray) B.G. Schub. -- accepted -- largebract ticktrefoil
	Desmodium longifolium (Torr. & A. Gray) Smyth -- not accepted
	Desmodium paniculatum var. angustifolium Torr. & A. Gray -- not accepted
	Desmodium paniculatum var. pubens Torr. & A. Gray -- not accepted
	Desmodium sessilifolium (Torr.) Torr. & A. Gray -- accepted -- sessile tickclover, sessileleaf tickclover, sessileleaf ticktrefoil
	Desmodium tenuifolium Torr. & A. Gray -- accepted -- slimleaf ticktrefoil
	Dianthera parvifolia (Torr.) A. Gray -- not accepted
	Diaperia candida (Torr. & A. Gray) Benth. -- accepted -- silver pygmycudweed
	Diaperia drummondii (Torr. & A. Gray) Benth. -- not accepted
	Diaperia verna var. drummondii (Torr. & A. Gray) Morefield -- accepted -- spring pygmycudweed
	Dicentra eximia (Ker Gawl.) Torr. -- accepted -- turkey corn
	Dichanthelium acuminatum ssp. fasciculatum (Torr.) Freckmann & Lelong -- not accepted
	Dichanthelium acuminatum var. fasciculatum (Torr.) Freckmann -- accepted -- Huachuca panic, tapered rosette grass, western panicgrass
	Dichanthelium dichotomum var. ramulosum (Torr.) LeBlond -- accepted
	Dichanthelium lanuginosum var. fasciculatum (Torr.) Spellenb. -- not accepted
	Dichelostemma californicum (Torr.) Alph. Wood -- not accepted
	Dichelostemma capitatum ssp. pauciflorum (Torr.) Keator -- accepted -- bluedicks
	Dichelostemma pulchellum var. pauciflorum (Torr.) Hoover -- not accepted
	Dicoria Torr. ex A. Gray -- accepted -- dicoria, twinbugs
	Dieteria asteroides Torr. -- accepted -- fall tansyaster
	Dieteria asteroides var. asteroides Torr. -- accepted
	Dieteria incana (Lindl.) Torr. & A. Gray -- not accepted
	Dioclea multiflora (Torr. & A. Gray) C. Mohr -- accepted -- Boykin's clusterpea
	Diodia tricocca Torr. & A. Gray -- not accepted
	Diodia virginiana var. latifolia Torr. & A. Gray -- accepted -- Virginia buttonweed
	Dioon caputoi De Luca, Sabato & Vázq. Torres -- accepted
	Dioon edule var. sonorense (De Luca, Sabato & Vázq. Torres) McVaugh & Pérez de la Rosa -- not accepted
	Dioon holmgrenii De Luca, Sabato & Vázq. Torres -- accepted
	Dioon merolae De Luca, Sabato & Vázq. Torres -- accepted
	Dioon rzedowskii De Luca, A. Moretti, Sabato & Vázq. Torres -- accepted
	Dioon sonorense (De Luca, Sabato & Vázq. Torres) Chemnick, T.J. Greg. & Salas-Mor. -- accepted
	Dioon tomasellii De Luca, Sabato & Vázq. Torres -- accepted
	Dioon tomasellii var. sonorense De Luca, Sabato & Vázq. Torres -- not accepted
	Dioon tomasellii var. tomasellii De Luca, Sabato & Vázq. Torres -- not accepted
	Dipteracanthus linearis Torr. & A. Gray -- not accepted
	Disporum hookeri (Torr.) G. Nicholson -- not accepted -- drops of gold
	Disporum hookeri var. hookeri (Torr.) G. Nicholson -- not accepted -- drops of gold
	Disporum hookeri var. trachyandrum (Torr.) Q. Jones -- not accepted -- drops of gold
	Disporum trachyandrum (Torr.) Britton -- not accepted
	Distichlis marginata var. stricta (Torr.) Thurb. -- not accepted
	Distichlis maritima var. stricta (Torr.) Thurb. -- not accepted
	Distichlis spicata ssp. stricta (Torr.) Thorne -- accepted
	Distichlis spicata var. stricta (Torr.) Scribn. -- not accepted
	Distichlis spicata var. stricta (Torr.) Beetle -- not accepted
	Distichlis stricta (Torr.) Rydb. -- not accepted
	Distichlis stricta var. stricta (Torr.) Rydb. -- not accepted
	Ditaxis blodgettii (Torr.) Pax -- not accepted
	Ditaxis laevis (Torr.) A. Heller -- not accepted
	Ditaxis serrata (Torr.) A. Heller -- accepted -- California silverbush, New Mexico silverbush, Yuma silverbush
	Dolicholus latifolius (Nutt. ex Torr. & A. Gray) Vail -- not accepted
	Downingia Torr. -- accepted -- calicoflower
	Downingia elegans (Douglas ex Lindl.) Torr. -- accepted -- elegant calicoflower
	Downingia elegans var. elegans (Douglas ex Lindl.) Torr. -- not accepted -- elegant calicoflower
	Downingia puchella (Lindl.) Torr. -- not accepted
	Downingia pulchella (Lindl.) Torr. -- accepted -- flatface calicoflower
	Downingia pusilla (G. Don) Torr. -- accepted -- dwarf calicoflower
	Draba brachycarpa Nutt. ex Torr. & A. Gray -- accepted -- short-pod whitlowgrass, shortfruited draba, shortpod draba
	Draba cuneifolia Nutt. ex Torr. & A. Gray -- accepted -- wedgeleaf draba, wedgeleaf whitlowgrass
	Draba cuneifolia var. cuneifolia Nutt. ex Torr. & A. Gray -- accepted -- wedgeleaf draba, wedgeleaf whitlowgrass
	Draba cuneifolia var. platycarpa (Torr. & A. Gray) S. Watson -- not accepted
	Draba platycarpa Torr. & A. Gray -- accepted -- broad-pod whitlowgrass, broadpod draba, broadpod whitlowgrass
	Draperia Torr. -- accepted
	Draperia systula (A. Gray) Torr. -- not accepted
	Draperia systyla (A. Gray) Torr. -- accepted -- violet draperia
	Drejera juncea Torr. -- not accepted
	Drejera puberula Torr. -- not accepted
	Drejera thurberi Torr. -- not accepted
	Drejera wrightii Torr. -- not accepted
	Dyschoriste linearis (Torr. & A. Gray) Kuntze -- accepted -- narrowleaf dyschoriste, polkadots
	Dyschoriste linearis var. linearis (Torr. & A. Gray) Kuntze -- accepted -- polkadots
	Dysodiopsis tagetoides (Torr. & A. Gray) Rydb. -- accepted -- false dogfennel, marygold dogweed
	Dyssodia tagetoides Torr. & A. Gray -- not accepted
	Eatonia pensylvanica var. major (Torr.) A. Gray -- not accepted
	Echinocactus viridescens Torr. & A. Gray -- not accepted
	Echinocystis Torr. & A. Gray -- accepted
	Echinocystis lobata (Michx.) Torr. & A. Gray -- accepted -- wild balsamapple, wild cucumber, wild mock-cucumber, wild mockcucumber
	Echinocystis oregana (Torr. ex S. Watson) Cogn. -- not accepted
	Eddya hispidissima Torr. & A. Gray -- not accepted
	Elatine texana (Hook.) Torr. & A. Gray -- not accepted
	Eleocharis acicularis var. minima Torr. -- not accepted
	Eleocharis albida Torr. -- accepted -- white spikerush
	Eleocharis arenicola Torr. -- not accepted
	Eleocharis baldwinii (Torr.) Chapm. -- accepted -- Baldwin's spikerush
	Eleocharis calva Torr. -- not accepted
	Eleocharis cellulosa Torr. -- accepted -- Gulf Coast spikerush, Gulfcoast spikesedge
	Eleocharis equisetoides (Elliott) Torr. -- accepted -- jointed spikesedge
	Eleocharis flaccida var. olivacea (Torr.) Fernald & Griscom -- not accepted
	Eleocharis flavescens var. olivacea (Torr.) Gleason -- accepted -- bright green spikerush
	Eleocharis melanocarpa Torr. -- accepted -- blackfruit spikerush
	Eleocharis microcarpa Torr. -- accepted -- smallfruit spikerush
	Eleocharis microcarpa var. filiculmis Torr. -- accepted
	Eleocharis microcarpa var. microcarpa Torr. -- accepted
	Eleocharis olivacea Torr. -- not accepted -- bright green spikerush
	Eleocharis olivacea var. olivacea Torr. -- not accepted -- bright green spikerush
	Eleocharis parvula var. anachaeta (Torr.) Svenson -- not accepted
	Eleocharis prolifera Torr. -- not accepted
	Eleocharis rostellata (Torr.) Torr. -- accepted -- beaked spike-rush, beaked spikerush, beaked spikesedge
	Eleocharis tricostata Torr. -- accepted -- three-angle spikerush
	Elymus canadensis var. glaucifolius (Willd.) Torr. -- not accepted
	Elymus villosus var. glabriusculus Torr. -- not accepted
	Emorya Torr. -- accepted
	Emorya suaveolens Torr. -- accepted -- emorybush
	Empetrum conradii Torr. -- not accepted
	Emplectocladus fasciculatus Torr. -- not accepted
	Encelia farinosa A. Gray ex Torr. -- accepted -- brittlebush, goldenhills, white brittlebush
	Encelia farinosa var. farinosa A. Gray ex Torr. -- not accepted -- goldenhills
	Endolepis Torr. -- not accepted
	Ephedra trifurca Torr. ex S. Watson -- accepted -- longleaf ephedra, longleaf jointfir, longleaf Mormon tea
	Epilobium foliosum (Torr. & A. Gray) Suksd. -- accepted -- California willowherb, leafy willowherb
	Epilobium minutum var. foliosum Torr. & A. Gray -- not accepted
	Epilobium paniculatum Nutt. ex Torr. & A. Gray -- not accepted
	Epilobium paniculatum var. paniculatum Nutt. ex Torr. & A. Gray -- not accepted
	Eragrostis oxylepis (Torr.) Torr. -- not accepted
	Eragrostis secundiflora ssp. oxylepis (Torr.) S.D. Koch -- accepted -- red lovegrass
	Eremocarya angustifolia Torr. -- not accepted
	Eremocarya micrantha (Torr.) Greene -- not accepted
	Erigeron concinnus (Hook. & Arn.) Torr. & A. Gray -- accepted -- hairy daisy, Navajo fleabane
	Erigeron concinnus var. concinnus (Hook. & Arn.) Torr. & A. Gray -- accepted -- Navajo daisy, Navajo fleabane
	Erigeron divergens Torr. & A. Gray -- accepted -- spreading daisy, spreading fleabane
	Erigeron peregrinus ssp. callianthemus var. scaposus (Torr. & A. Gray) Cronquist -- not accepted -- subalpine fleabane
	Erigeron peregrinus var. scaposus (Torr. & A. Gray) Cronquist -- not accepted
	Erigeron strigosus var. beyrichii (Fisch. & C.A. Mey.) Torr. & A. Gray ex A. Gray -- not accepted -- Beyrich's fleabane
	Erigeron tenuis Torr. & A. Gray -- accepted -- slender fleabane, slenderleaf fleabane
	Erigeron vernus (L.) Torr. & A. Gray -- accepted -- early whitetop fleabane
	Eriodictyon californicum (Hook. & Arn.) Torr. -- accepted -- California yerba santa
	Eriogonum abertianum Torr. -- accepted -- Abert's buckwheat
	Eriogonum abertianum var. abertianum Torr. -- not accepted -- Abert's buckwheat
	Eriogonum alatum Torr. -- accepted -- wing eriogonum, winged buckwheat
	Eriogonum alatum var. alatum Torr. -- accepted -- winged buckwheat
	Eriogonum alatum var. glabriusculum Torr. -- accepted -- winged buckwheat
	Eriogonum brachypodum Torr. & A. Gray -- accepted -- Parry's buckwheat, Parry's wild buckwheat
	Eriogonum brevicaule var. laxifolium (Torr. & A. Gray) Reveal -- accepted -- goldenball eriogonum, shortstem buckwheat
	Eriogonum cernuum ssp. tenue (Torr. & A. Gray) S. Stokes -- not accepted
	Eriogonum cernuum var. tenue Torr. & A. Gray -- not accepted
	Eriogonum corymbosum var. divaricatum Torr. & A. Gray -- not accepted
	Eriogonum dasyanthemum Torr. & A. Gray -- accepted -- chaparral buckwheat
	Eriogonum deflexum Torr. -- accepted -- flatcrown buckwheat, skeletonweed, skeletonweed buckwheat
	Eriogonum deflexum ssp. watsonii (Torr. & A. Gray) S. Stokes -- not accepted
	Eriogonum deflexum var. brachypodum (Torr. & A. Gray) Munz -- not accepted
	Eriogonum deflexum var. deflexum Torr. -- accepted -- flatcrown buckwheat
	Eriogonum deflexum var. watsonii (Torr. & A. Gray) R.J. Davis -- not accepted
	Eriogonum effusum var. leptophyllum Torr. -- not accepted
	Eriogonum ericifolium Torr. & A. Gray -- accepted -- Yavapai buckwheat, Yavapai County buckwheat
	Eriogonum ericifolium var. ericifolium Torr. & A. Gray -- not accepted -- Yavapai buckwheat, Yavapai County buckwheat
	Eriogonum fasciculatum var. polifolium (Benth.) Torr. & A. Gray -- accepted -- Eastern Mojave buckwheat, flattop buckwheat, Mojave buckwheat
	Eriogonum greggii Torr. & A. Gray -- accepted -- Gregg's buckwheat
	Eriogonum hemipterum (Torr.) S. Stokes -- accepted -- Chisos Mountain buckwheat
	Eriogonum hemipterum var. hemipterum (Torr.) S. Stokes -- accepted -- Chisos Mountain buckwheat
	Eriogonum heracleoides var. angustifolium (Nutt.) Torr. & A. Gray -- not accepted -- parsnipflower buckwheat
	Eriogonum incanum Torr. & A. Gray -- accepted -- frosted buckwheat
	Eriogonum inflatum Torr. & Frém. -- accepted -- desert trumpet, Native American pipeweed
	Eriogonum inflatum var. inflatum Torr. & Frém. -- not accepted -- desert trumpet, Native American buckwheat
	Eriogonum kingii Torr. & A. Gray -- accepted -- Ruby Mountain buckwheat
	Eriogonum lachnogynum Torr. ex Benth. -- accepted -- woolly-cup wild buckwheat, woollycup buckwheat
	Eriogonum lachnogynum var. lachnogynum Torr. ex Benth. -- accepted -- woollycup buckwheat
	Eriogonum leptocladon Torr. & A. Gray -- accepted -- fine branched buckwheat, sand buckwheat
	Eriogonum leptocladon var. leptocladon Torr. & A. Gray -- accepted -- sand buckwheat
	Eriogonum leptophyllum (Torr. & A. Gray) Wooton & Standl. -- accepted -- slender-leaf buckwheat, slenderleaf buckwheat
	Eriogonum lobbii Torr. & A. Gray -- accepted -- granite buckwheat, Lobb's buckwheat
	Eriogonum lobbii var. lobbii Torr. & A. Gray -- not accepted -- Lobb's buckwheat
	Eriogonum lonchophyllum Torr. & A. Gray -- accepted -- spearleaf buckwheat, spreading wild buckwheat
	Eriogonum lonchophyllum var. lonchophyllum Torr. & A. Gray -- not accepted -- spearleaf buckwheat
	Eriogonum lonchophyllum var. nudicaule (Torr.) Reveal -- not accepted -- spearleaf buckwheat
	Eriogonum marifolium Torr. & A. Gray -- accepted -- marumleaf buckwheat
	Eriogonum marifolium var. incanum (Torr. & A. Gray) M.E. Jones -- not accepted
	Eriogonum marifolium var. marifolium Torr. & A. Gray -- accepted -- marumleaf buckwheat
	Eriogonum microthecum var. confertiflorum (Benth.) Torr. & A. Gray -- not accepted
	Eriogonum microthecum var. effusum (Nutt.) Torr. & A. Gray -- not accepted
	Eriogonum microthecum var. foliosum (Torr. & A. Gray) Reveal -- not accepted
	Eriogonum niveum var. decumbens (Benth.) Torr. & A. Gray -- not accepted
	Eriogonum nudicaule (Torr.) Small -- not accepted
	Eriogonum nutans Torr. & A. Gray -- accepted -- drooping buckwheat, Dugway buckwheat
	Eriogonum nutans var. nutans Torr. & A. Gray -- accepted -- Dugway buckwheat
	Eriogonum pharnaceoides Torr. -- accepted -- ginseng buckwheat, wirestem buckwheat
	Eriogonum pharnaceoides var. pharnaceoides Torr. -- accepted -- wirestem buckwheat
	Eriogonum platyphyllum Torr. -- not accepted -- tall buckwheat
	Eriogonum proliferum Torr. & A. Gray -- not accepted
	Eriogonum pusillum Torr. & A. Gray -- accepted -- puny buckwheat, yellow-turbans, yellowturbans
	Eriogonum pyrolifolium var. coryphaeum Torr. & A. Gray -- accepted -- Shasta buckwheat
	Eriogonum reniforme Torr. & Frém. -- accepted -- kidneyleaf buckwheat
	Eriogonum reniforme ssp. pusillum (Torr. & A. Gray) S. Stokes -- not accepted
	Eriogonum strictum ssp. proliferum (Torr. & A. Gray) S. Stokes -- not accepted -- Blue Mountain buckwheat
	Eriogonum strictum ssp. proliferum var. proliferum (Torr. & A. Gray) C.L. Hitchc. -- not accepted -- Blue Mountain buckwheat
	Eriogonum strictum var. proliferum (Torr. & A. Gray) C.L. Hitchc. -- accepted -- Blue Mountain buckwheat
	Eriogonum tenellum Torr. -- accepted -- matted wildbuckwheat, tall buckwheat
	Eriogonum tenellum var. caulescens Torr. & A. Gray -- not accepted
	Eriogonum tenellum var. platyphyllum (Torr. ex Benth.) Torr. -- accepted -- tall buckwheat
	Eriogonum tenellum var. tenellum Torr. -- accepted -- tall buckwheat
	Eriogonum thomasii Torr. -- accepted -- Thomas' buckwheat
	Eriogonum thurberi Torr. -- accepted -- Thurber's buckwheat, Thurber's wild buckwheat
	Eriogonum trichopes Torr. -- accepted -- little desert trumpet, little deserttrumpet
	Eriogonum trichopes var. trichopes Torr. -- not accepted -- little deserttrumpet
	Eriogonum truncatum Torr. & A. Gray -- accepted -- Contra Costa buckwheat, Mt. Diablo buckwheat
	Eriogonum umbellatum Torr. -- accepted -- sulfur buckwheat, sulfur eriogonum, sulphur flower buckwheat, sulphur wildbuckwheat, sulphur-flower buckwheat
	Eriogonum umbellatum ssp. bahiiforme (Torr. & A. Gray) Munz -- not accepted
	Eriogonum umbellatum var. bahiiforme (Torr. & A. Gray) Jeps. -- accepted -- sulphur-flower buckwheat
	Eriogonum umbellatum var. monocephalum Torr. & A. Gray -- not accepted
	Eriogonum umbellatum var. umbellatum Torr. -- accepted -- sulphur-flower buckwheat
	Eriogonum watsonii Torr. & A. Gray -- accepted -- Watson's buckwheat
	Eriogonum wrightii Torr. ex Benth. -- accepted -- bastardsage, shrubby buckwheat, Wright's buckwheat
	Eriogonum wrightii ssp. trachygonum (Torr. ex Benth.) S. Stokes -- not accepted
	Eriogonum wrightii var. trachygonum (Torr. ex Benth.) Jeps. -- accepted -- bastardsage, shrubby buckwheat
	Eriogonum wrightii var. wrightii Torr. ex Benth. -- accepted -- bastardsage, shrubby buckwheat, Wright's bastardsage
	Eritrichium pusillum Torr. & A. Gray -- not accepted
	Eryngium diffusum Torr. -- accepted -- bushy eryngo, spreading eryngo
	Eryngium leavenworthii Torr. & A. Gray -- accepted -- Leavenworth's eryngo
	Erythraea beyrichii Torr. & A. Gray -- not accepted
	Eucrypta chrysanthemifolia var. bipinnatifida (Torr.) Constance -- accepted -- spotted eucrypta, spotted hideseed
	Eucrypta micrantha (Torr.) A. Heller -- accepted -- dainty desert hideseed, desert eucrypta, desert hideseed
	Eulobus Nutt. ex Torr. & A. Gray -- accepted
	Eulobus californicus Nutt. ex Torr. & A. Gray -- accepted -- California suncup
	Euonymus occidentale Nutt. ex Torr. -- not accepted -- western burning bush, western wahoo
	Euonymus occidentale var. occidentale Nutt. ex Torr. -- not accepted -- western burning bush
	Euonymus occidentalis Nutt. ex Torr. -- accepted -- western burning bush, western burningbush, western wahoo
	Euonymus occidentalis var. occidentalis Nutt. ex Torr. -- accepted -- western burning bush
	Eupatorium lancifolium (Torr. & A. Gray) Small -- accepted -- lanceleaf thoroughwort
	Eupatorium leucolepis (DC.) Torr. & A. Gray -- accepted -- justiceweed
	Eupatorium leucolepis var. leucolepis (DC.) Torr. & A. Gray -- accepted -- justiceweed
	Eupatorium resinosum Torr. ex DC. -- accepted -- pine barren thoroughwort
	Eupatorium rotundifolium var. ovatum (Bigelow) Torr. -- accepted -- roundleaf thoroughwort
	Eupatorium semiserratum var. lancifolium Torr. & A. Gray -- not accepted
	Eupatorium texense (Torr. & A. Gray) Rydb. -- not accepted
	Euphorbia albomarginata Torr. & A. Gray -- accepted -- Rattlesnake weed, white-margin sandmat, white-margin sandwort, whitemargin sandmat
	Euphorbia depressa Torr. ex Spreng. -- not accepted
	Euphorbia dilatata Torr. & A. Gray -- not accepted
	Euphorbia fendleri Torr. & A. Gray -- accepted -- Fendler's sandmat
	Euphorbia flaviana Carn.-Torres & Cordeiro -- accepted
	Euphorbia hirsuta (Torr.) Wiegand -- not accepted
	Euphorbia hirsuta var. subglabra (Gren. & Godr.) Nebot, De la Torrek, Mateo & Alcaraz -- not accepted
	Euphorbia hypericifolia var. hirsuta Torr. -- not accepted
	Euphorbia inundata Torr. ex Chapm. -- accepted -- Florida pineland spurge
	Euphorbia inundata var. inundata Torr. ex Chapm. -- accepted -- Florida pineland spurge
	Euphorbia leptocera Engelm. ex Torr. -- not accepted
	Euphorbia melanadenia Torr. & A. Gray -- accepted -- prostrate spurge, red-gland spurge, squaw sandmat
	Euphorbia pseudonutans var. hirsuta (Torr.) Farw. -- not accepted
	Euphorbia setiloba Engelm. ex Torr. -- accepted -- fringed spurge, shaggy spurge, Yuma sandmat
	Euphorbia wrightii Torr. & A. Gray -- accepted -- Wright's spurge
	Eurybia chapmanii (Torr. & A. Gray) G.L. Nesom -- not accepted -- savannah aster
	Eurybia eryngiifolia (Torr. & A. Gray) G.L. Nesom -- accepted -- thistleleaf aster
	Eurybia mirabilis (Torr. & A. Gray) G.L. Nesom -- accepted -- bouquet aster
	Eurytaenia Torr. & A. Gray -- accepted -- spreadwing
	Eurytaenia texana Torr. & A. Gray -- accepted -- Texas spreadwing
	Euthamia leptocephala (Torr. & A. Gray) Greene ex Porter & Britton -- accepted -- bushy goldentop
	Evax candida (Torr. & A. Gray) A. Gray -- not accepted -- silver evax, silver pygmycudweed
	Evax multicaulis var. drummondii (Torr. & A. Gray) A. Gray -- not accepted
	Evax verna var. drummondii (Torr. & A. Gray) Kartesz & Gandhi -- not accepted -- spring pygmycudweed
	Evolvulus alsinoides var. angustifolius Torr. -- accepted -- dwarf morningglory, slender dwarf morning-glory
	Evolvulus alsinoides var. hirticaulis Torr. -- not accepted
	Evolvulus alsinoides var. hiticaulis Torr. -- not accepted
	Falcata pitcheri (Torr. & A. Gray) Kuntze -- not accepted
	Fallugia paradoxa (D. Don) Endl. ex Torr. -- accepted -- Apache plume
	Ferocactus viridescens (Torr. & A. Gray) Britton & Rose -- accepted -- Biznaga-barril verdosa, coast barrel cactus, San Diego barrel cactus
	Festuca acutiflora (Torr.) Bigelow -- not accepted
	Festuca altaica ssp. scabrella (Torr.) Hultén -- not accepted
	Festuca altaica var. aristulata (Torr.) St.-Yves -- not accepted
	Festuca altaica var. scabrella (Torr.) Breitung -- not accepted
	Festuca aristulata (Torr.) Shear ex Piper -- not accepted
	Festuca aristulata var. aristulata (Torr.) Shear ex Piper -- not accepted
	Festuca macrostachya Torr. & A. Gray -- not accepted
	Festuca octoflora var. aristulata Torr. ex L.H. Dewey -- not accepted
	Festuca scabrella Torr. -- not accepted
	Festuca scabrella ssp. scabrella Torr. -- not accepted
	Festuca scabrella var. scabrella Torr. -- not accepted
	Festuca tenella var. aristulata Torr. -- not accepted
	Filaginopsis drummondii Torr. & A. Gray -- not accepted
	Filaginopsis multicaulis (DC.) Torr. & A. Gray -- not accepted
	Filago candida (Torr. & A. Gray) Shinners -- not accepted
	Filago verna var. drummondii (Torr. & A. Gray) Shinners -- not accepted
	Fimbristylis baldwiniana (Schult.) Torr. -- not accepted
	Fimbristylis drummondii (Torr. & Hook. ex Torr.) Boeckeler -- not accepted
	Fimbristylis puberula var. drummondii (Torr. & Hook.) D.B. Ward -- not accepted
	Forestiera angustifolia Torr. -- accepted -- narrowleaf forestiera, Texas forestiera, Texas swampprivet
	Forestiera phillyreoides (Benth.) Torr. -- not accepted -- desert-olive forestiera
	Forestiera reticulata Torr. -- accepted -- netleaf forestiera, netleaf swampprivet
	Forestiera sphaerocarpa Torr. -- not accepted
	Frankenia jamesii Torr. ex A. Gray -- accepted -- frank bush, James' seaheath
	Franseria deltoidea Torr. -- not accepted
	Frasera paniculata Torr. -- accepted -- tufted elkweed, tufted frasera, Utah elkweed
	Frasera parryi Torr. -- accepted -- Coahuila frasera
	Fraxinus anomala Torr. ex S. Watson -- accepted -- singleleaf ash
	Fraxinus anomala var. amonala Torr. ex S. Watson -- not accepted
	Fraxinus anomala var. anomala Torr. ex S. Watson -- accepted -- singleleaf ash
	Fraxinus cuspidata Torr. -- accepted -- fragrant ash
	Fraxinus dipetala var. trifoliolata Torr. -- not accepted
	Fraxinus pennsylvanica ssp. velutina (Torr.) G.N. Mill. -- not accepted
	Fraxinus trifoliata (Torr.) F.H. Lewis & Epling -- not accepted
	Fraxinus trifoliolata (Torr.) F.H. Lewis & Epling -- not accepted
	Fraxinus velutina Torr. -- accepted -- velvet ash
	Fremontia californica Torr. -- not accepted
	Fremontodendron californicum (Torr.) Coville -- accepted -- California flannelbush, California fremontia, flannelbush
	Fremontodendron californicum ssp. californicum (Torr.) Coville -- not accepted -- California flannelbush, flannelbush
	Fritillaria kamtschatcensis Torr. -- not accepted
	Fritillaria liliacea Torr. -- not accepted
	Fritillaria parviflora Torr. -- not accepted
	Fritillaria pluriflora Torr. ex Benth. -- accepted -- adobe lily, adobe-lily
	Fuirena pumila (Torr.) Spreng. -- accepted -- dwarf umbrella-sedge, dwarf umbrellasedge
	Fuirena simplex var. aristulata (Torr.) Kral -- accepted -- western umbrella-sedge, western umbrellasedge
	Fuirena squarrosa var. aristulata Torr. -- not accepted
	Fuirena squarrosa var. pumila Torr. -- not accepted
	Funastrum cynanchoides ssp. heterophyllum (Engelm. ex Torr.) Kartesz -- not accepted -- Hartweg's twinevine
	Funastrum heterophyllum (Engelm. ex Torr.) Standl. -- not accepted
	Gaillardia pinnatifida Torr. -- accepted -- blanketflower, red dome blanketflower, red-dome blanketflower, slender gaillardia, yellow blanketflower
	Gaillardia pinnatifida var. pinnatifida Torr. -- not accepted -- red dome blanketflower
	Galactia brachypoda Torr. & A. Gray -- not accepted
	Galactia elliottii var. leavenworthii Torr. & A. Gray -- not accepted
	Galactia floridana Torr. & A. Gray -- accepted -- Florida milkpea
	Galactia spiciformis Torr. & A. Gray -- not accepted
	Galarhoeus inundatus (Torr. ex Chapm.) Small -- not accepted
	Galium angustifolium Nutt. ex Torr. & A. Gray -- accepted -- narrowleaf bedstraw
	Galium californicum var. texanum Torr. & A. Gray -- not accepted
	Galium circaezans var. lanceolatum (Torr.) Torr. & A. Gray -- not accepted
	Galium concinnum Torr. & A. Gray -- accepted -- shining bedstraw
	Galium lanceolatum Torr. -- accepted -- lanceleaf wild licorice
	Galium pilosum var. puncticulosum (Michx.) Torr. & A. Gray -- accepted -- hairy bedstraw
	Galium rotundifolium var. lanceolatum (Torr.) Kuntze -- not accepted
	Galium strictum Torr. -- not accepted
	Galium texanum (Torr. & A. Gray) Wiegand -- not accepted
	Galium trifidum var. latifolium Torr. -- not accepted
	Galium trifidum var. tinctorium (L.) Torr. & A. Gray -- not accepted
	Galium virgatum var. leiocarpum Torr. & A. Gray -- not accepted
	Galpinsia lavandulifolia (Torr. & A. Gray) Small -- not accepted
	Garrya fremonti Torr. -- not accepted
	Garrya fremontii Torr. -- accepted -- bearbrush
	Garrya lindheimeri Torr. -- not accepted
	Garrya ovata ssp. lindheimeri (Torr.) Dahling -- accepted -- eggleaf silktassel, Lindheimer's silktassel
	Garrya wrightii Torr. -- accepted -- Wright's silktassel
	Gaura biennis var. pitcheri Torr. & A. Gray -- not accepted
	Gaura coccinea var. parvifolia (Torr.) Rickett -- not accepted
	Gaura drummondii (Spach) Torr. & A. Gray -- not accepted -- Drummond's beeblossom, scented gaura
	Gaura filipes var. major Torr. & A. Gray -- not accepted
	Gaura heterandra Torr. -- not accepted
	Gaura pitcheri (Torr. & A. Gray) Small -- not accepted
	Gaura villosa Torr. -- not accepted -- woolly beeblossom, woolly gaura
	Gaura villosa ssp. villosa Torr. -- not accepted -- woolly beeblossom
	Gaurella canescens (Torr. & Frém.) A. Nelson -- not accepted
	Gaylussacia dumosa (Andrews) Torr. & A. Gray -- accepted -- dwarf huckleberry
	Gaylussacia dumosa var. dumosa (Andrews) Torr. & A. Gray -- not accepted -- dwarf huckleberry
	Gaylussacia frondosa (L.) Torr. & A. Gray -- accepted -- blue huckleberry, dangleberry
	Gaylussacia frondosa var. frondosa (L.) Torr. & A. Gray -- not accepted
	Gaylussacia ursina (M.A. Curtis) Torr. & A. Gray -- accepted -- bear huckleberry
	Gayophytum diffusum Torr. & A. Gray -- accepted -- bigflower groundsmoke, spreading groundsmoke
	Gayophytum diffusum ssp. diffusum Torr. & A. Gray -- accepted -- spreading groundsmoke
	Gayophytum nuttallii Torr. & A. Gray -- not accepted
	Gayophytum racemosum Torr. & A. Gray -- accepted -- black-foot groundsmoke, blackfoot groundsmoke
	Gayophytum racemosum var. caesium (Torr. & A. Gray) Munz -- not accepted
	Gayophytum ramosissimum Torr. & A. Gray -- accepted -- muchbranched groundsmoke, pinyon groundsmoke
	Gentiana fremontii Torr. -- accepted -- moss gentian
	Geraea Torr. & A. Gray -- accepted -- desert sunflower, desertsunflower
	Geraea canescens Torr. & A. Gray -- accepted -- desert sunflower, desertgold, hairy desertsunflower
	Geraea canescens var. canescens Torr. & A. Gray -- not accepted -- hairy desert sunflower, hairy desertsunflower
	Geranium caespitosum var. fremontii (Torr. ex A. Gray) Dorn -- not accepted -- Fremont's geranium
	Geranium fremontii Torr. ex A. Gray -- not accepted
	Geranium viscosissimum var. incisum (Torr. & A. Gray) N.H. Holmgren -- accepted -- sticky purple geranium
	Gerardia barbata (Torr. & A. Gray) S.F. Blake -- not accepted
	Gerardia grandiflora var. serrata (Torr. ex Benth.) B.L. Rob. -- not accepted
	Geum vernum (Raf.) Torr. & A. Gray -- accepted -- heartleaf avens, spring avens
	Gilia gunnisonii Torr. & A. Gray -- not accepted
	Gilia longiflora (Torr.) G. Don -- not accepted
	Gilia macombii Torr. ex A. Gray -- not accepted
	Gilia polycladon Torr. -- not accepted
	Gilia pungens (Torr.) Benth. -- not accepted
	Gilia subnuda Torr. ex A. Gray -- not accepted -- Canyon Lands gilia, coral gilia, coral gily-flower
	Gilia thurberi (Torr. ex A. Gray) A. Gray -- not accepted
	Glyceria acutiflora Torr. -- accepted -- creeping mannagrass
	Glyceria americana (Torr.) Pammel -- not accepted
	Glyceria elongata (Torr.) Trin. -- not accepted
	Glyceria maxima var. americana (Torr.) B. Boivin -- not accepted
	Glyceria pallida (Torr.) Trin. -- not accepted
	Glyceria pallida var. pallida (Torr.) Trin. -- not accepted
	Glycosma occidentalis Nutt. ex Torr. & A. Gray -- not accepted
	Gnaphalium purpureum var. falcatum (Lam.) Torr. & A. Gray -- not accepted
	Godetia epilobioides (Nutt. ex Torr. & A. Gray) S. Watson -- not accepted
	Gomphrena caespitosa Torr. -- accepted -- tufted ball clover, tufted globe amaranth
	Gomphrena sonorae Torr. -- accepted -- Sonoran globe amaranth, Sonoran globe-amaranth
	Gomphrena tuberifera Torr. -- not accepted
	Gonolobus parvifolius Torr. -- not accepted
	Gonolobus productus Torr. -- not accepted
	Gratiola neglecta Torr. -- accepted -- clammy hedge-hyssop, clammy hedgehyssop, drug hedgehyssop, hedge hyssop, neglected hedgehyssop
	Guincula lobata (Torr.) Raf. -- not accepted
	Gutierrezia californica (DC.) Torr. & A. Gray -- accepted -- California snakeweed, San Joaquin snakeweed
	Gutierrezia texana (DC.) Torr. & A. Gray -- accepted -- Texas broomweed, Texas snakeweed
	Gutierrezia texana var. texana (DC.) Torr. & A. Gray -- accepted -- Texas snakeweed
	Habenaria grandiflora (Bigelow) Torr. -- not accepted
	Habenaria hookeri Torr. ex A. Gray -- not accepted
	Halea ludoviciana Torr. & A. Gray -- not accepted
	Hamosa leptocarpa (Torr. & A. Gray) Rydb. -- not accepted
	Haplopappus alpigenus Torr. & A. Gray -- not accepted
	Haplopappus divaricatus var. hookerianus (Torr. & A. Gray) Waterf. -- not accepted
	Haplopappus drummondii (Torr. & A. Gray) S.F. Blake -- not accepted
	Haplopappus lanceolatus (Hook.) Torr. & A. Gray -- not accepted
	Haplopappus lanceolatus var. lanceolatus (Hook.) Torr. & A. Gray -- not accepted
	Haplopappus nuttallii Torr. & A. Gray -- not accepted
	Haplopappus pluriflorus (Torr. & A. Gray) H.M. Hall -- not accepted
	Haplopappus pygmaeus (Torr. & A. Gray) A. Gray -- not accepted
	Haplopappus racemosus (Nutt.) Torr. -- not accepted
	Haplopappus racemosus var. racemosus (Nutt.) Torr. -- not accepted
	Haplopappus uniflorus (Hook.) Torr. & A. Gray -- not accepted
	Haplopappus uniflorus var. uniflorus (Hook.) Torr. & A. Gray -- not accepted
	Hedeoma dentata Torr. -- accepted -- dentate false pennyroyal, dentate falsepennyroyal
	Hedeoma dentatum Torr. -- not accepted
	Hedeoma incana Torr. -- not accepted
	Hedeoma molle Torr. -- not accepted
	Hedeoma mollis Torr. -- accepted -- falsepennyroyal, softhair false pennyroyal
	Hedeoma nana (Torr.) Briq. -- accepted -- dwarf false pennyroyal, dwarf pennyroyal, false pennyroyal
	Hedeoma nana ssp. nana (Torr.) Briq. -- accepted -- dwarf false pennyroyal, false pennyroyal, falsepennyroyal
	Hedeoma nanum (Torr.) Briq. -- not accepted
	Hedeoma nanum var. namum (Torr.) Briq. -- not accepted
	Hedeoma plicata Torr. -- accepted -- falsepennyroyal, veiny false pennyroyal
	Hedeoma plicatum Torr. -- not accepted
	Hedeoma serpylloides Torr. -- not accepted
	Hedyotis caerulea var. minor (Michx.) Torr. & A. Gray -- not accepted
	Hedyotis halei Torr. & A. Gray -- not accepted
	Hedyotis longifolia var. ciliolata (Torr.) Mohlenbr. -- not accepted
	Hedyotis longifolia var. tenuifolia (Nutt.) Torr. & A. Gray -- not accepted
	Hedyotis minima (Beck) Torr. & A. Gray -- not accepted
	Hedyotis purpurea (L.) Torr. & A. Gray -- not accepted
	Hedyotis purpurea var. ciliolata (Torr.) Fosberg -- not accepted
	Helenium autumnale var. canaliculatum (Lam.) Torr. & A. Gray -- not accepted
	Helenium autumnale var. grandiflorum (Nutt.) Torr. & A. Gray -- not accepted -- fall sneezeweed
	Helenium incisum (Torr. & A. Gray) Alph. Wood -- not accepted
	Helianthella Torr. & A. Gray -- accepted -- helianthella
	Helianthella grandiflora Torr. & A. Gray -- not accepted
	Helianthella tenuifolia Torr. & A. Gray -- not accepted
	Helianthella uniflora (Nutt.) Torr. & A. Gray -- accepted -- oneflower helianthella
	Helianthella uniflora var. douglasii (Torr. & A. Gray) W.A. Weber -- not accepted -- Douglas' helianthella
	Helianthella uniflora var. uniflora (Nutt.) Torr. & A. Gray -- not accepted -- oneflower helianthella
	Helianthemum scoparium Nutt. ex Torr. & A. Gray -- accepted -- Bisbee Peak rushrose
	Helianthus argophyllis Torr. & A. Gray -- not accepted
	Helianthus argophyllus Torr. & A. Gray -- accepted -- silverleaf sunflower
	Helianthus cinereus var. sullivantii Torr. & A. Gray -- not accepted
	Helianthus cucumerifolius Torr. & A. Gray -- not accepted
	Helianthus debilis ssp. cucumerifolius (Torr. & A. Gray) Heiser -- accepted -- cucumberleaf sunflower
	Helianthus debilis var. cucumerifolius (Torr. & A. Gray) A. Gray -- not accepted
	Helianthus hirsutus var. stenophyllus Torr. & A. Gray -- not accepted
	Helianthus hirsutus var. trachyphyllus Torr. & A. Gray -- not accepted
	Helianthus laevigatus Torr. & A. Gray -- accepted -- smooth sunflower
	Helianthus microcephalus Torr. & A. Gray -- accepted -- small woodland sunflower
	Helianthus nuttallii Torr. & A. Gray -- accepted -- Nuttall's sunflower
	Helianthus nuttallii ssp. nuttallii Torr. & A. Gray -- accepted -- Nuttall's sunflower
	Helianthus occidentalis ssp. plantagineus (Torr. & A. Gray) Shinners -- accepted -- fewleaf sunflower, Gewleaf sunflower
	Helianthus occidentalis var. dowellianus (M.A. Curtis) Torr. & A. Gray -- not accepted
	Helianthus occidentalis var. plantagineus Torr. & A. Gray -- not accepted
	Helianthus radula (Pursh) Torr. & A. Gray -- accepted -- rayless sunflower, stiff sunflower
	Helianthus schweinitzii Torr. & A. Gray -- accepted -- Schweinitz's sunflower
	Helianthus stenophyllus (Torr. & A. Gray) E.E. Watson -- not accepted
	Helianthus X cinereus Torr. & A. Gray (pro sp.) -- accepted -- sunflower
	Heliotropium angustifolium Torr. -- not accepted
	Heliotropium confertifolium (Torr.) Torr. ex A. Gray -- accepted -- leafy heliotrope
	Heliotropium glabriusculum (Torr.) A. Gray -- accepted -- greeneye heliotrope
	Heliotropium greggii Torr. -- accepted -- fragrant heliotrope
	Heliotropium leavenworthii Torr. -- not accepted
	Heliotropium molle (Torr.) I.M. Johnst. -- accepted -- soft heliotrope
	Heliotropium phyllostachum Torr. -- not accepted
	Heliotropium phyllostachyum Torr. -- not accepted
	Heliotropium tenellum (Nutt.) Torr. -- accepted -- pasture heliotrope
	Hemizonia corymbosa (DC.) Torr. & A. Gray -- not accepted -- coastal tarweed
	Hemizonia corymbosa ssp. corymbosa (DC.) Torr. & A. Gray -- not accepted -- coastal tarweed
	Hemizonia fasciculata (DC.) Torr. & A. Gray -- not accepted -- clustered tarweed
	Hemizonia pugens (Hook. & Arn.) Torr. & A. Gray -- not accepted
	Hemizonia pugens var. pugens (Hook. & Arn.) Torr. & A. Gray -- not accepted
	Hemizonia pungens (Hook. & Arn.) Torr. & A. Gray -- not accepted -- common spikeweed, common tarweed, spikeweed
	Hemizonia pungens ssp. pungens (Hook. & Arn.) Torr. & A. Gray -- not accepted -- common tarweed, spikeweed
	Hesperaloe parviflora (Torr.) J.M. Coult. -- accepted -- redflower false yucca, redflower falseyucca, Samandoque flor roja
	Hesperaloe parviflora var. parviflora (Torr.) J.M. Coult. -- not accepted -- redflower false yucca, smallflower falseyucca
	Hesperocnide Torr. -- accepted -- stingingnettle
	Hesperocnide tenella Torr. -- accepted -- western nettle, western stingingnettle
	Hesperoscordium maritimum Torr. -- not accepted
	Hesperoscordum maritimum Torr. -- not accepted
	Hesperoyucca whipplei (Torr.) Baker -- accepted -- chaparral yucca
	Heterogaura heterandra (Torr.) Coville -- not accepted
	Heterotheca graminifolia var. tenuifolia (Torr.) Gandhi & R.D. Thomas -- not accepted
	Heterotheca oligantha (Chapm. ex Torr. & A. Gray) V.L. Harms -- not accepted
	Heterotheca scabrella (Torr. & A. Gray) V.L. Harms -- not accepted
	Heuchera bracteata (Torr.) Ser. -- accepted -- bracted alumroot, Rocky Mountain alumroot
	Heuchera curtisii Torr. & A. Gray ex A. Gray -- not accepted
	Heuchera cylindrica var. glabella (Torr. & A. Gray) Wheelock -- not accepted -- beautiful alumroot
	Heuchera cylindrica var. ovalifolia (Torr. & A. Gray) Wheelock -- not accepted
	Heuchera glabella Torr. & A. Gray -- not accepted
	Heuchera ovalifolia Torr. & A. Gray -- not accepted
	Heuchera parvifolia Nutt. ex Torr. & A. Gray -- accepted -- common alumroot, little-leaf alumroot, littleleaf alumroot
	Heuchera parvifolia var. parvifolia Nutt. ex Torr. & A. Gray -- not accepted -- littleleaf alumroot
	Heuchera rubescens Torr. -- accepted -- pink alumroot
	Heuchera rubescens var. rubescens Torr. -- not accepted -- pink alumroot
	Heyderia decurrens (Torr.) K. Koch -- not accepted
	Hibiscus moscheutos var. occidentalis Torr. -- not accepted
	Hieracium longipilum Torr. -- accepted -- hairy hawkweed, longbeard hawkweed
	Hilaria jamesii (Torr.) Benth. -- accepted
	Hoffmannseggia drummondii Torr. & A. Gray -- accepted -- dwarf nicker
	Hoffmannseggia jamesii Torr. & A. Gray -- not accepted
	Hoffmannseggia microphylla Torr. -- accepted -- wand holdback
	Hoita rhombifolia (Torr.) Rydb. -- not accepted
	Holcophacos distortus (Torr. & A. Gray) Rydb. -- not accepted
	Honckenya oblongifolia Torr. & A. Gray -- not accepted
	Horkelia fusca var. tenuiloba Torr. -- not accepted
	Horkelia multifoliolata Torr. -- not accepted
	Horkelia tenuiloba (Torr.) A. Gray -- accepted -- Santa Rosa horkelia
	Horkelia tridentata Torr. -- accepted -- threetooth horkelia
	Horkelia tridentata ssp. tridentata Torr. -- not accepted -- threetooth horkelia
	Horkelia tridentata var. tridentata Torr. -- accepted -- threetooth horkelia
	Hosackia glabra (Vogel) Torr. -- not accepted
	Hosackia incana Torr. -- accepted -- woolly bird's-foot trefoil
	Hosackia subpinnata auct. non (Lag.) Torr. & A. Gray -- not accepted
	Houstonia ciliolata Torr. -- not accepted
	Hulsea Torr. & A. Gray -- accepted -- alpinegold, hulsea
	Hulsea californica Torr. & A. Gray -- accepted -- San Diego alpinegold
	Hunzikeria texana (Torr.) D'Arcy -- accepted -- Texas cupflower
	Hybanthus linearis (Torr.) Shinners -- not accepted
	Hydrangea arborescens var. oblonga Torr. & A. Gray -- not accepted
	Hydrangea arborescens var. sterilis Torr. & A. Gray -- not accepted
	Hydrochloa fluitans (Michx.) Torr. -- not accepted
	Hydrophila drummondii (Torr. & A. Gray) House -- not accepted
	Hydrophila drummondii sensu (Torr. & A. Gray) House -- not accepted
	Hymenatherum tagetoides (Torr. & A. Gray) A. Gray -- not accepted
	Hymenoclea Torr. & A. Gray ex A. Gray -- accepted -- burrobrush
	Hymenoclea monogyla Torr. & A. Gray -- not accepted
	Hymenoclea monogyra Torr. & A. Gray -- not accepted -- cheeseweed burrobrush, singlewhorl burrobrush, singlewhorl burrobush
	Hymenoclea salsola Torr. & A. Gray -- not accepted -- burrobrush, white burrobrush
	Hymenoclea salsola var. salsola Torr. & A. Gray -- not accepted -- burrobrush, white burrobrush
	Hymenopappus corymbosus Torr. & A. Gray -- not accepted
	Hymenopappus scabiosaeus var. corymbosus (Torr. & A. Gray) B.L. Turner -- accepted -- Carolina woollywhite
	Hymenoxys depressa (Torr. & A. Gray ex A. Gray) S.L. Welsh & Reveal -- not accepted
	Hymenoxys grandiflora (Torr. & A. Gray ex A. Gray) K.F. Parker -- accepted -- graylocks four-nerve daisy, graylocks hymenoxys
	Hypericum drummondii (Grev. & Hook.) Torr. & A. Gray -- accepted -- Drummond's St. Johnswort, nits and lice
	Hypericum microsepalum (Torr. & A. Gray) A. Gray ex S. Watson -- accepted -- flatwoods St. Johnswort
	Hypericum opacum Torr. & A. Gray -- not accepted
	Hyptis emoryi Torr. -- accepted -- desert lavender
	Ilex ambigua (Michx.) Torr. -- accepted -- Carolina holly
	Ilex ambigua var. montana (Torr. & A. Gray ex A. Gray) H.E. Ahles -- not accepted
	Ilex montana Torr. & A. Gray ex A. Gray -- accepted -- mountain holly, mountain winterberry
	Ilex verticillata var. padifolia (Willd.) Torr. & A. Gray ex S. Watson -- not accepted
	Ilex verticillata var. tenuifolia (Torr.) S. Watson -- not accepted
	Iliamna acerifolia (Nutt. ex Torr. & A. Gray) Greene -- not accepted
	Iliamna longisepala (Torr.) Wiggins -- accepted -- longsepal wild hollyhock
	Indigofera leptosepala Nutt. ex Torr. & A. Gray -- not accepted
	Indigofera miniata var. leptosepala (Nutt. ex Torr. & A. Gray) B.L. Turner -- not accepted -- western indigo
	Inula ericoides Torr. -- not accepted
	Iodanthus (Torr. & A. Gray) Steud. -- accepted
	Iodanthus dentatus (Torr.) Greene -- not accepted
	Iodanthus hesperidioides (Torr. & A. Gray) A. Gray -- not accepted
	Ipomoea costellata Torr. -- accepted -- crestrib morning-glory, crestrib morningglory
	Ipomoea leptophylla Torr. -- accepted -- bush morning-glory, bush morningglory
	Ipomoea leptotoma Torr. -- not accepted
	Ipomoea leptotoma var. leptotoma Torr. -- not accepted -- pink morningglory
	Ipomoea shumardiana (Torr.) Shinners -- accepted -- narrowleaf morning-glory, narrowleaf morningglory
	Ipomoea tenuiloba Torr. -- accepted -- spiderleaf
	Ipomoea tenuiloba var. tenuiloba Torr. -- accepted -- spiderleaf
	Ipomoea ternifolia var. leptotoma (Torr.) J.A. McDonald -- accepted -- pink morningglory, tripleleaf morning-glory
	Ipomopsis gunnisonii (Torr. & A. Gray) V.E. Grant -- accepted -- sand-dune skyrocket, sanddune ipomopsis, sanddune skyrocket
	Ipomopsis longiflora (Torr.) V.E. Grant -- accepted -- flaxflowered gilia, flaxflowered ipomopsis, white-flower skyrocket, whiteflowered gilia
	Ipomopsis longiflora ssp. longiflora (Torr.) V.E. Grant -- accepted -- flaxflowered gilia, flaxflowered ipomopsis
	Ipomopsis macombii (Torr. ex A. Gray) V.E. Grant -- accepted -- Macomb's ipomopsis, Macomb's skyrocket
	Ipomopsis polycladon (Torr.) V.E. Grant -- accepted -- manybranched gilia, manybranched ipomopsis, sprawling skyrocket
	Ipomopsis thurberi (Torr. ex A. Gray) V.E. Grant -- accepted -- El Paso skyrocket, Thurber skyrocket
	Iris douglasiana var. major Torr. -- not accepted
	Iris macrosiphon Torr. -- accepted -- bowltube iris
	Isnardia spathulata (Torr. & A. Gray) Small -- not accepted
	Isocoma drummondii (Torr. & A. Gray) Greene -- accepted -- Drummond's goldenbush, Drummond's goldenweed, Drummond's jimmyweed
	Isocoma pluriflora (Torr. & A. Gray) Greene -- accepted -- rayless goldenrod, southern goldenbush, southern jimmyweed
	Isolepis carinata Hook. & Arn. ex Torr. -- accepted -- keeled bulrush
	Isolepis cernua var. californica (Torr.) Kartesz -- not accepted
	Isolepis warei Torr. -- not accepted
	Isopappus divaricatus (Nutt.) Torr. & A. Gray -- not accepted
	Isopappus hookerianus Torr. & A. Gray -- not accepted
	Isopyrum biternatum (Raf.) Torr. & A. Gray -- not accepted
	Isotrema californica (Torr.) Huber -- not accepted
	Isotrema californicum (Torr.) Huber -- not accepted
	Ivesia Torr. & A. Gray -- accepted -- mousetail
	Ivesia gordanii (Hook.) Torr. & A. Gray -- not accepted
	Ivesia gordonii (Hook.) Torr. & A. Gray -- accepted -- Gordon's ivesia
	Ivesia gordonii var. gordonii (Hook.) Torr. & A. Gray -- accepted -- Gordon's ivesia
	Ivesia gracilis Torr. & A. Gray -- not accepted
	Ivesia multifoliata (Torr.) D.D. Keck -- not accepted
	Ivesia multifoliolata (Torr.) D.D. Keck -- accepted -- manyleaf mousetail
	Ivesia pickeringii Torr. ex A. Gray -- accepted -- Pickering ivesia, silky mousetail
	Jacksonia tenuifolia (Torr. & A. Gray) Greene -- not accepted
	Jamesia Torr. & A. Gray -- accepted -- cliffbush
	Jamesia americana Torr. & A. Gray -- accepted -- cliff Jamesia, cliffbush, fivepetal cliffbush
	Jamesia americana var. americana Torr. & A. Gray -- accepted -- fivepetal cliffbush
	Janipha manihot var. angustiloba Torr. -- not accepted
	Jarava durifolia (Parodi ex Torres) Peñailillo -- accepted
	Jarava scabrifolia (Torres) Peñailillo -- accepted
	Jatropha cardiophylla (Torr.) Müll. Arg. -- accepted -- sangre de cristo
	Jepsonia parryi (Torr.) Small -- accepted -- coast jepsonia, Parry's jepsonia
	Juglans major (Torr.) A. Heller -- accepted -- Arizona black walnut, Arizona walnut, New Mexico walnut
	Juglans major var. major (Torr.) A. Heller -- accepted -- Arizona walnut
	Juglans microcarpa var. major (Torr.) L.D. Benson -- not accepted
	Juglans rupestris Engelm. ex Torr. -- not accepted
	Juglans rupestris var. major Torr. -- not accepted
	Juncus longistylis Torr. -- accepted -- long-style rush, long-styled rush
	Juncus longistylis var. longistylis Torr. -- not accepted -- long-style rush, longstyle rush
	Juncus longistylus Torr. -- not accepted
	Juncus marginatus var. odoratus Torr. -- not accepted
	Juniperus californica ssp. osteosperma (Torr.) A.E. Murray -- not accepted
	Juniperus californica var. osteosperma (Torr.) L.D. Benson -- not accepted
	Juniperus californica var. osterosperma (Torr.) Little -- not accepted
	Juniperus deppeana var. pachyphlaea (Torr.) Martínez -- not accepted -- enebro aborí
	Juniperus osteosperma (Torr.) Little -- accepted -- Utah juniper
	Juniperus virginiana var. prostrata (Pers.) Torr. -- not accepted
	Kallstroemia grandiflora Torr. ex A. Gray -- accepted -- Arizona poppy, orange caltrop
	Keckiella ternata (Torr. ex A. Gray) Straw -- accepted -- scarlet keckiella
	Keckiella ternata ssp. ternata (Torr. ex A. Gray) Straw -- accepted -- scarlet keckiella
	Keckiella ternata var. ternata (Torr. ex A. Gray) Straw -- not accepted
	Kelloggia Torr. ex Benth. -- accepted
	Kelloggia galioides Torr. -- accepted -- milk kelloggia, milky kelloggia
	Kobresia bipartita (All.) Dalla Torre -- not accepted
	Koeleria canescens Torr. ex Trin. -- not accepted
	Koeleria pensylvanica var. major (Torr.) Torr. -- not accepted
	Koeleria truncata (Muhl.) Torr. -- not accepted
	Koeleria truncata var. major Torr. -- not accepted
	Koellia albescens (Torr. & A. Gray) Kuntze -- not accepted
	Koellia clinopodioides (Torr. & A. Gray) Kuntze -- not accepted
	Krameria lanceolata Torr. -- accepted -- spreading ratany, trailing krameria, trailing ratany
	Kraunhia macrostachya (Torr. & A. Gray) Small -- not accepted
	Krynitzkia crassisepala (Torr. & A. Gray) A. Gray -- not accepted
	Krynitzkia jamesii (Torr.) A. Gray -- not accepted
	Kuhnia eupatorioides var. corymbulosa Torr. & A. Gray -- not accepted
	Kuhnia eupatorioides var. gracilis Torr. & A. Gray -- not accepted
	Kyllinga sesquiflora Torr. -- not accepted
	Lacinaria boykinii (Torr. & A. Gray) Kuntze -- not accepted
	Lacinaria chapmanii (Torr. & A. Gray) Kuntze -- not accepted
	Lactuca canadensis var. integrifolia (Bigelow) Torr. & A. Gray -- not accepted
	Lactuca hirsuta var. albiflora (Torr. & A. Gray) Shinners -- not accepted -- hairy lettuce
	Lactuca spicata var. integrifolia (Torr. & A. Gray) Britton -- not accepted
	Langloisia schottii (Torr.) Greene -- not accepted
	Langloisia setosissima (Torr. & A. Gray ex Torr.) Greene -- accepted -- Great Basin langloisia, moth langloisia
	Langloisia setosissima ssp. setosissima (Torr. & A. Gray ex Torr.) Greene -- accepted -- Great Basin langloisia
	Lantana macropoda Torr. -- not accepted
	Laphamia bisetosa Torr. ex A. Gray -- not accepted
	Laphamia dissecta Torr. -- not accepted
	Lappula fremontii (Torr.) Greene -- not accepted
	Lasthenia fremontii (Torr. ex A. Gray) Greene -- accepted -- Fremont's goldfields
	Lathyrus venosus var. grandiflorus Torr. -- not accepted
	Layia carnosa (Nutt.) Torr. & A. Gray -- accepted -- beach layia, beach tidytips
	Layia fremontii (Torr. & A. Gray) A. Gray -- accepted -- Fremont's tidytips
	Leavenworthia Torr. -- accepted -- gladecress
	Leavenworthia aurea Torr. -- accepted -- golden gladecress, golden yelloweye
	Leavenworthia aurea var. aurea Torr. -- not accepted -- golden gladecress
	Leavenworthia michauxii Torr. -- not accepted
	Leiostemon ambiguus (Torr.) Greene -- not accepted
	Lemna perpusilla Torr. -- accepted -- minute duckweed
	Lepachys columnaris (Pursh) Torr. & A. Gray -- not accepted
	Lepachys peduncularis Torr. & A. Gray -- not accepted
	Lepachys pinnata (Vent.) Torr. & A. Gray -- not accepted
	Lepidium flavum Torr. -- accepted -- yellow pepperweed
	Lepidium flavum var. flavum Torr. -- not accepted -- yellow pepperweed
	Lepidium oxycarpum Torr. & A. Gray -- accepted -- forked pepperweed
	Lepitoma brevifolia Torr. ex Steud. -- not accepted
	Leptodactylon pungens (Torr.) Torr. ex Nutt. -- not accepted -- common prickly gilia, granite gilia, granite prickly gilia, granite prickly phlox
	Leptodactylon pungens var. pungens (Torr.) Torr. ex Nutt. -- not accepted
	Leptoglossis texana (Torr.) A. Gray -- not accepted
	Leptopoda fimbriata Torr. & A. Gray non Leptopoda fimbriata (Michx.) Eaton -- not accepted
	Lespedeza capitata var. vulgaris Torr. & A. Gray -- not accepted
	Lespedeza hirta var. sparsiflora Torr. & A. Gray -- not accepted
	Lesquerella angustifolia (Nutt. ex Torr. & A. Gray) S. Watson -- not accepted -- annual bladderpod, thread-leaved bladderpod, threadleaf bladderpod
	Lesquerella gracilis ssp. nuttallii (Torr. & A. Gray) Rollins & E.A. Shaw -- not accepted -- Nuttall's bladderpod
	Lesquerella nuttallii (Torr. & A. Gray) S. Watson -- not accepted
	Lesquerella pallida (Torr. & A. Gray) S. Watson -- not accepted -- white bladderpod
	Leucelene ericoides (Torr.) Greene -- not accepted
	Leucothoe davisiae Torr. ex A. Gray -- accepted -- Sierra laurel
	Levenworthia Torr. -- not accepted
	Levenworthia aurea Torr. -- not accepted
	Liatris chapmanii Torr. & A. Gray -- accepted -- Chapman's blazing star
	Liatris compacta (Torr. & A. Gray) Rydb. -- accepted -- scaly blazing star
	Liatris squarrosa var. compacta Torr. & A. Gray -- not accepted -- scaly blazing star
	Liatris X boykinii Torr. & A. Gray (pro sp.) -- accepted -- Boykin's gayfeather
	Libocedrus decurrens Torr. -- not accepted -- cedro de incienso
	Ligusticum apiifolium (Nutt. ex Torr. & A. Gray) A. Gray -- accepted -- celeryleaf licorice-root
	Linanthus pungens (Torr.) J.M. Porter & L.A. Johnson -- accepted -- granite prickly phlox
	Linnaea borealis ssp. longiflora (Torr.) Hultén -- not accepted -- longtube twinflower
	Linnaea borealis var. longiflora Torr. -- accepted -- longtube twinflower
	Linosyris texana Torr. & A. Gray -- not accepted
	Linum rigidum var. berlandieri (Hook.) Torr. & A. Gray -- not accepted
	Lipocarpha maculata (Michx.) Torr. -- accepted -- American halfchaff sedge
	Lippia cuneifolia (Torr.) Steud. -- not accepted
	Lithophragma (Nutt.) Torr. & A. Gray -- accepted -- woodland-star
	Lithophragma cymbalaria Torr. & A. Gray -- accepted -- mission woodland-star
	Lithospermum multiflorum Torr. ex A. Gray -- accepted -- manyflowered gromwell, manyflowered stoneseed, purple pucoon
	Lobelia boykinii Torr. & A. Gray ex A. DC. -- accepted -- Boykin's lobelia
	Loeseliastrum schottii (Torr.) Timbrook -- accepted -- Schott's calico
	Lomatium bicolor var. leptocarpum (Torr. & A. Gray) Schlessman -- accepted -- Wasatch desert parsley, Wasatch desertparsley, Wasatch lomatium
	Lomatium dasycarpum (Torr. & A. Gray) J.M. Coult. & Rose -- accepted -- woollyfruit desertparsley
	Lomatium dasycarpum ssp. dasycarpum (Torr. & A. Gray) J.M. Coult. & Rose -- accepted -- woollyfruit desertparsley
	Lomatium daucifolium (Torr. & A. Gray) J.M. Coult. & Rose -- not accepted
	Lomatium divaricatum (Pursh) Nutt. ex Torr. & A. Gray -- not accepted
	Lomatium foeniculaceum ssp. daucifolium (Torr. & A. Gray) W.L. Theob. -- accepted -- carrot-leaf desert-parsley, desert biscuitroot
	Lomatium foeniculaceum var. daucifolium (Torr. & A. Gray) Cronquist -- not accepted
	Lomatium leptocarpum (Torr. & A. Gray) J.M. Coult. & Rose -- not accepted
	Lomatium lucidum (Nutt. ex Torr. & A. Gray) Jeps. -- accepted -- shiny biscuitroot
	Lomatium macrocarpum (Nutt. ex Torr. & A. Gray) J.M. Coult. & Rose -- accepted -- bigseed biscuitroot, bigseed lomatium, large-fruit desert-parsley, largefruit biscuitroot, long mamma
	Lomatium macrocarpum var. ellipticum (Torr. & A. Gray) Jeps. -- not accepted
	Lomatium platycarpum (Torr.) J.M. Coult. & Rose -- not accepted
	Lomatium tenuifolium Nutt. ex Torr. & A. Gray -- not accepted
	Lomatium triternatum ssp. platycarpum (Torr.) Cronquist -- not accepted
	Lomatium utriculatum (Nutt. ex Torr. & A. Gray) J.M. Coult. & Rose -- accepted -- common lomatium
	Lonicera albiflora Torr. & A. Gray -- accepted -- western white honeysuckle, white honeysuckle
	Lonicera caerulea var. villosa (Michx.) Torr. & A. Gray -- not accepted
	Lonicera hispidula (Lindl.) Douglas ex Torr. & A. Gray -- accepted -- pink honeysuckle
	Lonicera hispidula var. hispidula (Lindl.) Douglas ex Torr. & A. Gray -- accepted -- pink honeysuckle
	Lotus incanus (Torr.) Greene -- not accepted -- woolly bird's-foot trefoil
	Ludwigia cylindrica var. brachycarpa Torr. & A. Gray -- not accepted
	Ludwigia glandulosa ssp. brachycarpa (Torr. & A. Gray) C.I. Peng -- accepted -- cylindricfruit primrose-willow
	Ludwigia spathulata Torr. & A. Gray -- accepted -- spoon primrose-willow
	Lupinus argenteus var. decumbens (Torr.) S. Watson -- not accepted
	Lupinus decumbens Torr. -- not accepted
	Lupinus falcifer Nutt. ex Torr. & A. Gray (pro. syn.) -- not accepted
	Lupinus foliosus (Torr. & A. Gray) Nutt. ex Hook. -- not accepted
	Lupinus laxiflorus var. foliosus Torr. & A. Gray -- not accepted
	Lupinus laxiflorus var. tenellus (Douglas ex G. Don) Torr. & A. Gray -- not accepted
	Lupinus nanus ssp. latifolius (Benth. ex Torr.) D.B. Dunn -- accepted -- sky lupine
	Lupinus nanus var. latifolius Benth. ex Torr. -- not accepted
	Lupinus polyphyllus ssp. polyphyllus var. grandifolius (Lindl. ex J. Agardh) Torr. & A. Gray -- not accepted -- bigleaf lupine
	Lupinus polyphyllus var. grandifolius (Lindl. ex J. Agardh) Torr. & A. Gray -- accepted -- bigleaf lupine
	Lupinus trifidus Torr. ex S. Watson -- not accepted
	Lupinus villosus var. diffusus (Nutt.) Torr. & A. Gray -- not accepted
	Lygodesma grandiflora (Nutt.) Torr. & A. Gray -- not accepted
	Lygodesmia aphylla var. texana Torr. & A. Gray -- not accepted
	Lygodesmia grandiflora (Nutt.) Torr. & A. Gray -- accepted -- largeflower skeletonplant, largeflower skeletonweed, rush-pink
	Lygodesmia grandiflora var. grandiflora (Nutt.) Torr. & A. Gray -- accepted
	Lygodesmia pauciflora (Torr.) Shinners -- not accepted
	Lygodesmia texana (Torr. & A. Gray) Greene -- accepted -- Texas skeletonplant
	Lyonia fruticosa (Michx.) G.S. Torr. -- accepted -- coastal plain staggerbush
	Lysias hookeriana (Torr. ex A. Gray) Rydb. -- not accepted
	Lysimachia loomisii Torr. -- accepted -- Loomis' yellow loosestrife
	Lythrum alatum var. lanceolatum (Elliott) Torr. & A. Gray ex Rothr. -- accepted -- winged lythrum
	Lythrum californicum Torr. & A. Gray -- accepted -- California loosestrife
	Machaeranthera asteroides (Torr.) Greene -- not accepted
	Machaeranthera asteroides var. asteroides (Torr.) Greene -- not accepted -- New Mexico tansyaster
	Machaeranthera tortifolia (Torr. & A. Gray) Cronquist & D.D. Keck -- not accepted
	Machaerocarpus californicus (Torr.) Small -- not accepted -- California damsonium
	Macroptilium supinum (Wiggins & Rollins) A. Delgado & L. Torres -- accepted -- supine bean
	Macrosiphonia brachysiphon (Torr.) A. Gray -- not accepted -- Huachuca Mountain rocktrumpet
	Macrosiphonia lanuginosa var. macrosiphon (Torr.) Henrickson -- not accepted -- plateau rocktrumpet
	Macrosiphonia macrosiphon (Torr.) A. Heller -- not accepted
	Madia dissitiflora (Nutt.) Torr. & A. Gray -- not accepted
	Madia sativa var. congesta Torr. & A. Gray -- not accepted
	Mahonia fremontii (Torr.) Fedde -- not accepted -- Fremont's barberry, Fremont's mahonia
	Malacothamnus fasciculatus (Nutt. ex Torr. & A. Gray) Greene -- accepted -- Mendocino bushmallow
	Malacothamnus fremontii (Torr. ex A. Gray) Torr. ex Greene -- accepted -- Fremon's bushmallow
	Malacothrix incana (Nutt.) Torr. & A. Gray -- accepted -- dunedelion
	Malacothrix saxatilis (Nutt.) Torr. & A. Gray -- accepted -- cliff desert dandelion, cliff desertdandelion
	Malacothrix saxatilis var. commutata (Torr. & A. Gray) Ferris -- accepted -- cliff desertdandelion
	Malacothrix saxatilis var. saxatilis (Nutt.) Torr. & A. Gray -- accepted -- cliff desertdandelion
	Malacothrix sonchoides (Nutt.) Torr. & A. Gray -- accepted -- sowthistle desert dandelion, sowthistle desertdandelion, yellow-saucers
	Malacothrix tenuifolia (Nutt.) Torr. & A. Gray -- not accepted
	Malva fasciculata Nutt. ex Torr. & A. Gray -- not accepted
	Malvastrum americanum (L.) Torr. -- accepted -- Indian Valley false mallow
	Malvastrum fasciculatum (Nutt. ex Torr. & A. Gray) Greene -- not accepted
	Malvastrum fremontii Torr. ex A. Gray -- not accepted
	Malvaviscus arboreus var. drummondii (Torr. & A. Gray) Schery -- accepted -- wax mallow
	Malvaviscus drummondii Torr. & A. Gray -- not accepted
	Mandevilla brachysiphon (Torr.) Pichon -- accepted -- Huachuca Mountain rocktrumpet
	Mandevilla macrosiphon (Torr.) Pichon -- accepted -- plateau rocktrumpet
	Manihot angustiloba (Torr.) Müll. Arg. -- accepted -- desertmountain manihot, narrow-leaf cassava
	Marah oregana (Torr. ex A. Gray) Howell -- accepted -- coastal manroot, western wildcucumber
	Marah oreganus (Torr. ex A. Gray) Howell -- not accepted -- coastal manroot, western wildcucumber
	Marina parryi (Torr. & A. Gray) Barneby -- accepted -- Parry dalea, Parry's false prairie-clover, Parry's indigobush
	Mariscus schweinitzii (Torr.) T. Koyama -- not accepted
	Matelea parviflora (Torr.) Woodson -- accepted -- smallflower milkvine
	Matelea parvifolia (Torr.) Woodson -- accepted -- littleleaf matelea, small-leaf anglepod, spearleaf
	Matelea producta (Torr.) Woodson -- accepted -- Texas milkvine
	Meconella californica Torr. & Frém. -- accepted -- California fairypoppy, Canada mint
	Megalodonta beckii (Torr. ex Spreng.) Greene -- not accepted -- Beck's watermarigold
	Megalodonta beckii var. beckii (Torr. ex Spreng.) Greene -- not accepted -- Beck's watermarigold
	Megastachya oxylepis (Torr.) E. Fourn. -- not accepted
	Meibomia longifolia (Torr. & A. Gray) Vail -- not accepted
	Meibomia pubens (Torr. & A. Gray) Rydb. -- not accepted
	Meibomia sessilifolia (Torr.) Kuntze -- not accepted
	Meibomia tenuifolia (Torr. & A. Gray) Kuntze -- not accepted
	Melampodium leucanthum Torr. & A. Gray -- accepted -- plains blackfoot, plains blackfoot daisy
	Melanobatus leucodermis (Douglas ex Torr. & A. Gray) Greene -- not accepted
	Melica eremophila Torres -- accepted
	Melica glabrescens (Torres) Torres -- accepted
	Melica imperfecta var. sesquiflora Torr. ex Scribn. -- not accepted
	Melica parodiana Torres -- accepted
	Melica purpurascens (Torr.) Hitchc. -- not accepted
	Melica sarmentosa var. monticola Torres -- accepted
	Melica violacea var. glabrescens Torres -- not accepted
	Mentzelia albicaulis (Douglas ex Hook.) Douglas ex Torr. & A. Gray -- accepted -- white blazingstar, white-stemmed evening-star, whitestem blazingstar, whitestem stickleaf
	Mentzelia albicaulis var. albicaulis (Hook.) Torr. & A. Gray -- not accepted -- whitestem blazingstar
	Mentzelia congesta Nutt. ex Torr. & A. Gray -- accepted -- united blazingstar, Ventana blazingstar
	Mentzelia congesta var. congesta Nutt. ex Torr. & A. Gray -- not accepted -- Ventana blazingstar
	Mentzelia floridana Nutt. ex Torr. & A. Gray -- accepted -- poorman's patch
	Mentzelia gracilenta Torr. & A. Gray -- accepted -- grass blazingstar
	Mentzelia laevicaulis (Hook.) Torr. & A. Gray -- accepted -- blazingstar mentzelia, smoothstem blazingstar
	Mentzelia laevicaulis var. laevicaulis (Hook.) Torr. & A. Gray -- accepted -- smoothstem blazingstar
	Mentzelia lindleyi Torr. & A. Gray -- accepted -- Lindley's blazingstar
	Mentzelia micrantha (Hook. & Arn.) Torr. & A. Gray -- accepted -- San Luis blazingstar
	Mentzelia nuda (Pursh) Torr. & A. Gray -- accepted -- bractless blazingstar, goodmother, stickleaf mentzelia
	Mentzelia nuda var. nuda (Pursh) Torr. & A. Gray -- accepted -- bractless blazingstar
	Mentzelia pumila Nutt. ex Torr. & A. Gray -- accepted -- dwarf blazingstar, dwarf mentzelia, golden blazingstar
	Mentzelia pumila var. pumila Nutt. ex Torr. & A. Gray -- accepted -- dwarf mentzelia, dwarf stickleaf, golden blazingstar
	Mertensia alpina (Torr.) G. Don -- accepted -- alpine bluebells
	Mertensia ciliata (James ex Torr.) G. Don -- accepted -- mountain bluebells, shortstyle bluebells, tall fringe bluebells, tall fringed bluebells
	Mertensia ciliata var. ciliata (James ex Torr.) G. Don -- accepted -- tall fringe bluebells, tall fringed bluebells
	Mesadenia diversifolia (Torr. & A. Gray) Greene -- not accepted
	Micranthes tolmiei (Torr. & A. Gray) Brouillet & Gornall -- accepted -- alpine saxifrage, Tolmie's saxifrage
	Micromonolepis pusilla (Torr. ex S. Watson) Ulbr. -- accepted -- small povertyweed
	Miegia arundinacea Torr. ex Munro -- not accepted
	Mikania scandens var. pubescens (Nutt.) Torr. & A. Gray -- not accepted
	Milium pungens Torr. -- not accepted
	Miltitzia glandulifera (Torr. ex S. Watson) A. Heller -- not accepted
	Mimosa quadrivalvis var. angustata (Torr. & A. Gray) Barneby -- not accepted
	Mimosa strigillosa Torr. & A. Gray -- accepted -- herbaceous mimosa, powderpuff
	Mimulus geyeri Torr. -- not accepted
	Mimulus glabratus var. jamesii (Torr. & A. Gray ex Benth.) A. Gray -- accepted -- James' monkeyflower
	Mimulus jamesii Torr. & A. Gray ex Benth. -- not accepted
	Minuartia douglasii (Fenzl ex Torr. & A. Gray) Mattf. -- accepted -- Douglas' stitchwort
	Minuartia douglasii var. douglasii (Fenzl ex Torr. & A. Gray) Mattf. -- not accepted -- Douglas' stitchwort
	Mirabilis coccinea (Torr.) Benth. & Hook. f. -- accepted -- red four-o'clock, scarlet four o'clock, scarlet four-o'clock
	Mirabilis multiflora (Torr.) A. Gray -- accepted -- Colorado four o'clock, Colorado four-o'clock, manyflowered four-o'clock
	Mirabilis multiflora var. multiflora (Torr.) A. Gray -- accepted -- Colorado four o'clock
	Mitreola angustifolia (Torr. & A. Gray) J.B. Nelson -- not accepted
	Mitreola petiolata (J.F. Gmel.) Torr. & A. Gray -- accepted -- lax hornpod
	Momisia pallida (Torr.) Planch. -- not accepted
	Monarda humilis (Torr.) Prather & J.A. Keith -- accepted
	Monardella douglasii ssp. venosa (Torr.) Jokerst -- accepted -- veiny monardella
	Monardella douglasii var. venosa (Torr.) Jeps. -- not accepted -- veiny monardella
	Monardella nana ssp. leptosiphon (Torr.) Abrams -- accepted -- San Felipe monardella
	Monardella sheltonii (Torr.) Howell -- accepted -- Shelton's monardella
	Monardella villosa ssp. sheltonii (Torr.) Epling -- not accepted
	Monolepis pusilla Torr. ex S. Watson -- not accepted -- small monolepis, small povertyweed
	Monoptilon Torr. & A. Gray -- accepted -- desertstar, monoptilon
	Monoptilon bellidiforme Torr. & A. Gray ex A. Gray -- accepted -- daisy desertstar, Mojave desertstar
	Monotropa hypopithys var. rubra (Torr.) Farw. -- not accepted
	Monotropa hypopitys var. rubra (Torr.) Farw. -- not accepted
	Monroa Torr. -- not accepted -- false buffalograss
	Monroa squarrosa (Nutt.) Torr. -- not accepted -- false buffalo grass, false buffalograss
	Montia heterophylla (Torr. & A. Gray) Jeps. -- not accepted
	Montia perfoliata ssp. glauca (Nutt. ex Torr. & A. Gray) Ferris -- not accepted
	Montia sibirica var. heterophylla (Torr. & A. Gray) B.L. Rob. -- not accepted
	Montia spathulata var. exigua (Torr. & A. Gray) B.L. Rob. -- not accepted
	Montia spathulata var. tenuifolia (Torr. & A. Gray) Munz -- not accepted
	Morongia angustata (Torr. & A. Gray) Britton -- not accepted
	Mozinna cardiophylla Torr. -- not accepted
	Muehlenbergia utilis (Torr.) Hitchc. -- not accepted
	Muhlenbergia ambigua Torr. -- not accepted
	Muhlenbergia ambigua var. ambigua Torr. -- not accepted
	Muhlenbergia ambigua var. filiformis (Torr.) Farw. -- not accepted
	Muhlenbergia cuspidata (Torr. ex Hook.) Rydb. -- accepted -- plains muhly
	Muhlenbergia foliosa f. ambigua (Torr.) Wiegand -- not accepted
	Muhlenbergia foliosa ssp. ambigua (Torr.) Scribn. -- not accepted
	Muhlenbergia gracillima Torr. -- not accepted
	Muhlenbergia mexicana f. ambigua (Torr.) Fernald -- not accepted
	Muhlenbergia mexicana var. filiformis (Torr.) Scribn. -- accepted
	Muhlenbergia sylvatica (Torr.) Torr. ex A. Gray -- accepted -- forest muhly, woodland muhly
	Muhlenbergia sylvatica f. sylvatica (Torr.) Torr. ex A. Gray -- not accepted
	Muhlenbergia sylvatica var. sylvatica (Torr.) Torr. ex A. Gray -- not accepted -- muhlenbergie des bois variété des bois, woodland muhly
	Muhlenbergia tricholepis (Torr.) P.M. Peterson -- not accepted
	Muhlenbergia tricholepis (Torr.) Columbus -- accepted
	Muhlenbergia utilis (Torr.) Hitchc. -- accepted -- aparejo muhly, aparejograss
	Muilla maritima (Torr.) S. Watson -- accepted -- sea muilla
	Mulgedium spicatum var. integrifolium (Torr. & A. Gray) Small -- not accepted
	Munroa Torr. -- accepted
	Munroa squarrosa (Nutt.) Torr. -- accepted
	Munroa squarrosa var. squarrosa (Nutt.) Torr. -- not accepted
	Musineon divaricatum var. hookeri (Torr. & A. Gray) Mathias -- accepted -- Hooker's wildparsley, leafy wild parsley
	Musineon hookeri (Torr. & A. Gray) Nutt. -- not accepted
	Musineon tenuifolium (Nutt. ex Torr. & A. Gray) J.M. Coult. & Rose -- accepted -- slender wildparsley
	Musineum divaricatum (Pursh) Nutt. ex Torr. & A. Gray -- not accepted
	Musineum divaricatum var. hookeri Torr. & A. Gray -- not accepted
	Musineum tenuifolium Nutt. ex Torr. & A. Gray -- not accepted
	Myriophyllum hippuroides Nutt. ex Torr. & A. Gray -- accepted -- western watermilfoil
	Nabalus asperus (Michx.) Torr. & A. Gray -- not accepted
	Nama hispidum var. spathulatum (Torr.) C.L. Hitchc. -- not accepted
	Nama parvifolia (Torr.) Greenm. -- accepted
	Nama parvifolium (Torr.) Greenm. -- not accepted -- smallleaf fiddleleaf
	Nassella arcaensis (Speg.) Torres -- accepted
	Nassella arcuata (R.E. Fr.) Torres -- accepted
	Nassella burkartii (Torres) Barkworth & Torres -- accepted
	Nassella cabrerae Torres -- accepted
	Nassella carettei (Hauman) Torres -- accepted
	Nassella catamarcensis Torres -- accepted
	Nassella dasycarpa (Hitchc.) Torres -- accepted
	Nassella depauperata var. glabrata (Pilg.) Torres -- accepted
	Nassella elata (Speg.) Torres -- accepted
	Nassella fabrisii Torres -- accepted
	Nassella famatinensis Torres -- accepted
	Nassella glabripoda Torres -- accepted
	Nassella glabripoda var. glabripoda Torres -- accepted
	Nassella glabripoda var. planifolia Torres -- accepted
	Nassella leptothera (Speg.) Torres -- accepted
	Nassella ligularis (Griseb.) Barkworth & Torres -- accepted
	Nassella meyeri Torres -- accepted
	Nassella novari Torres -- accepted
	Nassella nubicola (Speg.) Torres -- accepted
	Nassella paramillonesis (Speg.) Torres -- accepted
	Nassella parva Torres -- accepted
	Nassella pubiflora var. humilior (Hack.) Torres -- accepted
	Nassella pubiflora var. levipoda Torres -- accepted
	Nassella punensis Torres -- accepted
	Nassella quinqueciliata (Roseng. & Izag.) Barkworth & Torres -- accepted
	Nassella ragonesei Torres -- accepted
	Nassella rupestris (Phil.) Torres -- accepted
	Nassella tucumana (Parodi) Torres -- accepted
	Nassella uspallatensis (Speg.) Torres -- accepted
	Nassella ventanicola (Cabrera & Torres) Barkworth -- accepted
	Nassella yaviensis Torres -- accepted
	Nasturtium curvisiliqua (Hook.) Nutt. ex Torr. & A. Gray -- not accepted
	Navarretia divaricata (Torr. ex A. Gray) Greene -- accepted -- divaricate navarretia, mountain navarretia
	Navarretia divaricata ssp. divaricata (Torr. ex A. Gray) Greene -- accepted -- divaricate navarretia
	Navarretia filicaulis (Torr. ex A. Gray) Greene -- accepted -- threadstem pincushionplant
	Navarretia schottii Torr. -- not accepted
	Negundo californica Torr. & A. Gray -- not accepted
	Negundo californicum Torr. & A. Gray -- not accepted
	Newberrya congesta Torr. ex A. Gray -- not accepted
	Nicoraella Torres -- not accepted
	Nicoraella bomanii (Hauman) Torres -- not accepted
	Nicoraella brevis Torres -- not accepted
	Nicoraella henrardiana (Parodi) Torres -- not accepted
	Nicoraella mucronata (Griseb.) Torres -- not accepted
	Nicoraella obtusa (Nees & Meyen) Torres -- not accepted
	Nicoraella rigidiseta (Pilg.) Torres -- not accepted
	Nicoraella venusta (Phil.) Torres -- not accepted
	Nicotiana attenuata Torr. ex S. Watson -- accepted -- coyote tabacco, coyote tobacco
	Nicotiana bigelovii (Torr.) S. Watson -- not accepted
	Nicotiana quadrivalvis var. bigelovii (Torr.) DeWolf -- accepted -- Bigelow's tobacco
	Nierembergia viscosa Torr. -- not accepted
	Nissolia schottii (Torr.) A. Gray -- accepted -- Schott yellowhood, Schott's yellowhood
	Nolina bigelovii (Torr.) S. Watson -- accepted -- Bigelow nolina, Bigelow's nolina, Palmilla de culebra
	Nolina bigelovii var. bigelovii (Torr.) S. Watson -- not accepted -- Bigelow's nolina
	Nolina erumpens (Torr.) S. Watson -- accepted -- beargrass, foothill beargrass, Palmilla de Chihuahua
	Nuphar advena var. tomentosa Torr. & A. Gray -- not accepted
	Nuttallia cerasiformis Torr. & A. Gray ex Hook. & Arn. -- not accepted
	Obione acanthocarpa Torr. -- not accepted
	Odontostomum Torr. -- accepted -- Hartweg's doll's-lily
	Odontostomum hartwegii Torr. -- accepted -- Hartweg's doll's-lily
	Odostemon fremontii (Torr.) Rydb. -- not accepted
	Oemleria cerasiformis (Torr. & A. Gray ex Hook. & Arn.) J.W. Landon -- accepted -- Indian plum
	Oenothera biennis var. canescens Torr. & A. Gray -- not accepted
	Oenothera biennis var. hookeri (Torr. & A. Gray) B. Boivin -- not accepted
	Oenothera bistorta Nutt. ex Torr. & A. Gray -- not accepted
	Oenothera boothii var. pygmaea (Douglas ex Lehm.) Torr. & A. Gray -- not accepted
	Oenothera breviflora Torr. & A. Gray -- not accepted
	Oenothera californica (Nutt. ex Torr. & A. Gray) Greene -- not accepted -- California eveningprimrose
	Oenothera canescens Torr. & Frém. -- accepted -- beakpod evening primrose, beakpod eveningprimrose, spotted evening primrose, spotted evening-primrose, spotted eveningprimrose
	Oenothera cardiophylla Torr. -- not accepted
	Oenothera claviformis Torr. & Frém. -- not accepted
	Oenothera coronopifolia Torr. & A. Gray -- accepted -- crownleaf evening primrose, crownleaf evening-primrose, crownleaf eveningprimrose
	Oenothera deltoides Torr. & Frém. -- accepted -- birdcage evening primrose, birdcage evening-primrose, birdcage eveningprimrose, dune primrose
	Oenothera deltoides ssp. deltoides Torr. & Frém. -- accepted -- birdcage evening primrose, birdcage evening-primrose, birdcage primrose, triangle eveningprimrose
	Oenothera elata ssp. hookeri (Torr. & A. Gray) W. Dietr. & W.L. Wagner -- accepted -- Hooker's evening primrose, Hooker's evening-primrose
	Oenothera heterophylla var. rhombipetala (Nutt. ex Torr. & A. Gray) Fosberg -- not accepted
	Oenothera hookeri Torr. & A. Gray -- not accepted
	Oenothera jamesii Torr. & A. Gray -- accepted -- James' eveningprimrose, trumpet evening primrose, trumpet evening-primrose
	Oenothera lavandulifolia Torr. & A. Gray -- accepted -- lavenderleaf sundrops
	Oenothera ovata Nutt. ex Torr. & A. Gray -- not accepted
	Oenothera parvula Nutt. ex Torr. & A. Gray -- not accepted
	Oenothera rhombipetala auct. non Nutt. ex Torr. & A. Gray -- not accepted -- fourpoint eveningprimrose
	Oenothera rhombipetala Nutt. ex Torr. & A. Gray -- accepted -- fourpoint evening primrose, fourpoint evening-primrose, fourpoint eveningprimrose, greater four-point evening-primrose
	Oenothera scapoidea Torr. & A. Gray -- not accepted
	Oenothera serrulata ssp. drummondii (Torr. & A. Gray) Munz -- not accepted
	Oenothera spachiana Torr. & A. Gray -- accepted -- Spach's evening primrose, Spach's evening-primrose, Spach's eveningprimrose
	Oenothera strigulosa (Fisch. & C.A. Mey.) Torr. & A. Gray -- not accepted
	Oenothera tanacetifolia Torr. & A. Gray -- not accepted
	Oligoneuron houghtonii (Torr. & A. Gray ex A. Gray) G.L. Nesom -- not accepted -- Houghton's goldenrod
	Oligoneuron nitidum (Torr. & A. Gray) Small -- not accepted -- shiny goldenrod
	Oligosporus filifolius (Torr.) W.A. Weber -- not accepted
	Oplopanax (Torr. & A. Gray) Miq. -- accepted
	Opulaster pauciflorus (Torr. & A. Gray) A. Heller -- not accepted
	Opuntia californica (Torr. & A. Gray) Coville -- not accepted -- California pricklypear
	Opuntia californica var. californica (Torr. & A. Gray) Coville -- not accepted -- California pricklypear
	Orbexilum gracile (Torr. & A. Gray) Rydb. -- not accepted
	Orbexilum pedunculatum var. gracile (Torr. & A. Gray) J.W. Grimes -- not accepted
	Orbexilum simplex (Nutt. ex Torr. & A. Gray) Rydb. -- accepted -- simple scurfpea, singlestem leather-root
	Orbexilum stipulatum (Torr. & A. Gray) Rydb. -- accepted -- largestipule leather-root
	Oreobatus deliciosus (Torr.) Rydb. -- not accepted
	Oreocallis davisiae (Torr. ex A. Gray) Small -- not accepted
	Oreocarya suffruticosa (Torr.) Greene -- not accepted
	Oreostemma alpigenum (Torr. & A. Gray) Greene -- accepted -- alpine aster, tundra aster
	Oreostemma alpigenum var. alpigenum (Torr. & A. Gray) Greene -- accepted -- tundra aster
	Oriza oryzoides Dalla Torre & Sarnth. -- not accepted
	Orthocarpus imbricatus Torr. ex S. Watson -- accepted -- mountain owl's-clover
	Oryza oryzoides (L.) Dalla Torre & Sarnth. -- not accepted
	Oryzopsis canadensis (Poir.) Torr. -- not accepted -- Canadian ricegrass
	Oryzopsis pungens (Torr.) Hitchc. -- not accepted -- mountain ricegrass
	Osmaronia cerasiformis (Torr. & A. Gray ex Hook. & Arn.) Greene -- not accepted
	Osmorhiza aristata var. longistylis (Torr.) B. Boivin -- not accepted
	Osmorhiza brachypoda Torr. -- accepted -- California sweet-cicely, California sweetcicely
	Osmorhiza longistylis (Torr.) DC. -- accepted -- aniseroot, longstyle sweetroot
	Osmorhiza nuda Torr. -- not accepted
	Osmorhiza occidentalis (Nutt. ex Torr. & A. Gray) Torr. -- accepted -- sweetanise, western sweetroot
	Othake sphacelata (Nutt. ex Torr.) Rydb. -- not accepted
	Oxalis berlandieri Torr. -- not accepted
	Oxybaphus coccineus Torr. -- not accepted
	Oxystylis Torr. & Frém. -- accepted
	Oxystylis lutea Torr. & Frém. -- accepted -- spiny caper
	Oxytheca perfoliata Torr. & A. Gray -- accepted -- perfoliate oxytheca, round-leaf puncturebract, roundleaf oxytheca
	Oxytheca watsonii Torr. & A. Gray -- accepted -- Watson's oxytheca
	Oxytropis deflexa ssp. sericea (Torr. & A. Gray) Cody -- not accepted
	Oxytropis deflexa var. sericea Torr. & A. Gray -- accepted -- blue nodding locoweed, longstem hangpod crazyweed, pendant-pod locoweed
	Oxytropis sericea var. speciosa (Torr. & A. Gray) S.L. Welsh -- accepted -- white locoweed
	Packera eurycephala (Torr. & A. Gray) W.A. Weber & Á. Löve -- accepted -- widehead groundsel
	Packera eurycephala var. eurycephala (Torr. & A. Gray) W.A. Weber & Á. Löve -- accepted -- widehead groundsel
	Packera millefolia (Torr. & A. Gray) W.A. Weber & Á. Löve -- accepted -- piedmont ragwort
	Packera multilobata (Torr. & A. Gray ex A. Gray) W.A. Weber & Á. Löve -- accepted -- lobeleaf groundsel
	Palafoxia callosa (Nutt.) Torr. & A. Gray -- accepted -- small palafox, small palafoxia
	Palafoxia hookerana Torr. & A. Gray -- not accepted
	Palafoxia hookeriana Torr. & A. Gray -- accepted -- sand palafox, showy palafoxia
	Palafoxia hookeriana var. hookeriana Torr. & A. Gray -- not accepted -- sand palafox
	Palafoxia integrifolia (Nutt.) Torr. & A. Gray -- accepted -- coastal plain palafox, coastalplain palafox
	Palafoxia sphacelata (Nutt. ex Torr.) Cory -- accepted -- othake, rayed palafoxia
	Panicularia acutiflora (Torr.) Kuntze -- not accepted
	Panicularia americana (Torr.) MacMill. -- not accepted
	Panicularia pallida (Torr.) Kuntze -- not accepted
	Panicum acuminatum var. fasciculatum (Torr.) Beetle -- not accepted
	Panicum acuminatum var. fasciculatum (Torr.) Lelong -- not accepted
	Panicum angustifolium J. Le Conte ex Torr. -- not accepted
	Panicum barbatum J. Le Conte ex Torr. -- not accepted
	Panicum capillare var. sylvaticum Torr. -- not accepted
	Panicum carinatum Torr. -- not accepted
	Panicum clandestinum var. pedunculatum (Torr.) Torr. -- not accepted
	Panicum debile Torr. ex Steud. -- not accepted
	Panicum depauperatum var. involutum (Torr.) Alph. Wood -- not accepted
	Panicum dichotomum var. fasciculatum Torr. -- not accepted
	Panicum dichotomum var. ramulosum (Torr.) Lelong -- not accepted
	Panicum fasciculatum var. reticulatum (Torr.) Beal -- not accepted
	Panicum fuscum var. reticulatum (Torr.) Scribn. & Merr. -- not accepted
	Panicum glaucum var. laevigatum J. Le Conte ex Torr. -- not accepted
	Panicum huachucae var. fasciculatum (Torr.) F.T. Hubb. -- not accepted
	Panicum insulare var. lachnanthum (Torr.) Kuntze -- not accepted
	Panicum involutum Torr. -- not accepted
	Panicum lachnanthum Torr. -- not accepted
	Panicum lanuginosum subvar. pilosum (Torr.) Farw. -- not accepted
	Panicum lanuginosum var. fasciculatum (Torr.) Fernald -- not accepted
	Panicum lindheimeri subvar. pilosum (Torr.) Farw. -- not accepted
	Panicum lindheimeri var. fasciculatum (Torr.) Fernald -- not accepted
	Panicum longifolium Torr. -- not accepted
	Panicum longifolium var. longifolium Torr. -- not accepted
	Panicum longisetum Torr. -- not accepted
	Panicum macrocarpon Torr. -- not accepted
	Panicum macrocarpon Leconte ex Torr. -- not accepted
	Panicum nitidum var. barbatum Torr. -- not accepted
	Panicum nitidum var. ciliatum Torr. -- not accepted
	Panicum nitidum var. pilosum Torr. -- not accepted
	Panicum nitidum var. ramulosum Torr. -- not accepted
	Panicum pedunculatum Torr. -- not accepted
	Panicum reticulatum Torr. -- not accepted
	Panicum umbrosum J. Le Conte ex Torr. -- not accepted
	Pappostipa speciosa var. media (Torres) Romasch. -- accepted
	Parkinsonia microphylla Torr. -- accepted -- littleleaf palo verde, yellow paloverde
	Paronychia baldwinii (Torr. & A. Gray) Fenzl ex Walp. -- accepted -- Baldwin's nailwort
	Paronychia baldwinii ssp. baldwinii (Torr. & A. Gray) Fenzl ex Walp. -- not accepted -- Baldwin's nailwort
	Paronychia depressa (Torr. & A. Gray) Nutt. ex A. Nelson -- accepted -- spreading nailwort
	Paronychia depressa var. depressa (Torr. & A. Gray) Nutt. ex A. Nelson -- not accepted -- spreading nailwort
	Paronychia drummondii Torr. & A. Gray -- accepted -- Drummond's nailwort
	Paronychia drummondii var. drummondii Torr. & A. Gray -- not accepted
	Paronychia jamesii Torr. & A. Gray -- accepted -- James' nailwort, nailwort
	Paronychia setacea Torr. & A. Gray -- accepted -- bristle nailwort
	Paronychia setacea var. setacea Torr. & A. Gray -- not accepted -- bristle nailwort
	Parosela formosa (Torr.) Vail -- not accepted
	Parosela jamesii Torr. -- not accepted -- James' prairie clover
	Parosela nana (Torr. ex A. Gray) A. Heller -- not accepted
	Parryella Torr. & A. Gray ex A. Gray -- accepted
	Parryella filifolia Torr. & A. Gray ex A. Gray -- accepted -- common dunebroom, dune broom
	Parthenium alpinum (Nutt.) Torr. & A. Gray -- accepted -- alpine feverfew, Arkansas River feverfew
	Pectis angustifolia Torr. -- accepted -- lemonscent, narrowleaf pectis
	Pectis angustifolia var. angustifolia Torr. -- accepted -- lemonscent, narrowleaf pectis
	Pediomelum digitatum (Nutt. ex Torr. & A. Gray) Isely -- accepted -- palmleaf Indian breadroot
	Pediomelum linearifolium (Torr. & A. Gray) J.W. Grimes -- accepted -- narrowleaf Indian breadroot, slimleaf scurfpea
	Pediomelum rhombifolium (Torr. & A. Gray) Rydb. -- accepted -- Gulf Indian breadroot, roundleaf scurfpea
	Pediomelum subacaule (Torr. & A. Gray) Rydb. -- accepted -- whiterim scurfpea
	Pediomelum subacaulis (Torr. & A. Gray) Rydb. -- not accepted
	Peltiphyllum peltatum (Torr. ex Benth.) Engl. -- not accepted
	Penstemon alpinus Torr. -- not accepted
	Penstemon alpinus var. alpinus Torr. -- not accepted
	Penstemon ambiguus Torr. -- accepted -- bush penstemon, gilia beardtongue, gilia penstemon
	Penstemon ambiguus var. ambiguus Torr. -- accepted -- gilia beardtongue, gilia penstemon
	Penstemon deustus ssp. heterander (Torr. & A. Gray) Pennell & D.D. Keck -- not accepted
	Penstemon deustus var. heterander (Torr. & A. Gray) Cronquist -- not accepted
	Penstemon fendleri Torr. & A. Gray -- accepted -- Fendler's beardtongue, Fendler's penstemon
	Penstemon fremontii Torr. & A. Gray -- accepted -- Fremont's beardtongue, Fremont's penstemon
	Penstemon fremontii var. fremontii Torr. & A. Gray -- accepted -- Fremont's beardtongue
	Penstemon glaber var. alpinus (Torr.) A. Gray -- accepted -- alpine penstemon, alpine sawsepal penstemon
	Penstemon ternatus Torr. ex A. Gray -- not accepted
	Penstemon thurberi Torr. -- accepted -- Thurber's penstemon
	Pentodon halei (Torr. & A. Gray) A. Gray -- not accepted
	Perideridia californica (Torr.) A. Nelson & J.F. Macbr. -- accepted -- California yampah
	Peritoma platycarpa (Torr.) Iltis -- accepted -- golden spiderflower
	Perityle bisetosa (Torr. ex A. Gray) Shinners -- accepted -- twobristle rockdaisy, twospike rockdaisy
	Perityle bisetosa var. bisetosa (Torr. ex A. Gray) Shinners -- accepted -- twobristle rockdaisy, twospike rockdaisy
	Perityle dissecta (Torr.) A. Gray -- accepted -- dissected rockdaisy, slimlobe rockdaisy
	Perityle emoryi Torr. -- accepted -- Emory's rockdaisy, Emory's rocklily
	Perityle emoryi var. nuda (Torr.) A. Gray -- not accepted
	Petalostemon albidus (Torr. & A. Gray) Small -- not accepted
	Petalostemon candidus var. oligophyllus (Torr.) F.J. Herm. -- not accepted
	Petalostemon carneus var. albidus Torr. & A. Gray -- not accepted
	Petalostemon emarginatus Torr. & A. Gray -- not accepted
	Petalostemon gracilis var. oligophyllus Torr. -- not accepted
	Petalostemon griseus Torr. & A. Gray -- not accepted
	Petalostemon macrostachyus Torr. -- not accepted
	Petalostemon microphyllus (Torr. & A. Gray) A. Heller -- not accepted
	Petalostemon obovatus Torr. & A. Gray -- not accepted
	Petalostemon oligophyllus (Torr.) Torr. ex Smyth -- not accepted
	Petalostemon phleoides Torr. & A. Gray -- not accepted
	Petalostemon phleoides var. microphyllus Torr. & A. Gray -- not accepted
	Petrophytum (Nutt. ex Torr. & A. Gray) Rydb. -- accepted -- rockspirea
	Peucedanum ambiguum (Nutt.) Nutt. ex Torr. & A. Gray -- not accepted
	Peucedanum macrocarpum Nutt. ex Torr. & A. Gray -- not accepted
	Phaca neglecta Torr. & A. Gray -- not accepted
	Phacelia bicolor Torr. ex S. Watson -- accepted -- twocolor phacelia
	Phacelia bicolor var. bicolor Torr. ex S. Watson -- not accepted
	Phacelia crassifolia Torr. ex S. Watson -- not accepted
	Phacelia crenulata Torr. ex S. Watson -- accepted -- caterpillarweed, cleftleaf wildheliotrope, notch-leaf scorpion-weed
	Phacelia crenulata var. crenulata Torr. ex S. Watson -- accepted -- cleftleaf wildheliotrope
	Phacelia curvipes Torr. ex S. Watson -- accepted -- Washoe phacelia, Washoe scorpion-weed
	Phacelia douglasii (Benth.) Torr. -- accepted -- Douglas' phacelia
	Phacelia douglasii var. douglasii (Benth.) Torr. -- accepted -- Douglas' phacelia
	Phacelia fremontii Torr. -- accepted -- Fremont's phacelia, Fremont's scorpion-weed
	Phacelia glaberrima (Torr. ex S. Watson) J.T. Howell -- accepted -- Reese River phacelia, southwestern phacelia
	Phacelia gymnoclada Torr. ex S. Watson -- accepted -- nakedstem phacelia
	Phacelia hastata var. leucophylla (Torr.) Cronquist -- not accepted
	Phacelia humilis Torr. & A. Gray -- accepted -- low phacelia
	Phacelia humilis var. humilis Torr. & A. Gray -- accepted -- low phacelia
	Phacelia hydrophylloides Torr. ex A. Gray -- accepted -- waterleaf phacelia
	Phacelia infundibuliformis Torr. -- accepted -- Rio Grande phacelia, Rio Grande scorpionweed
	Phacelia integrifolia Torr. -- accepted -- gypsum phacelia, gypsum scorpion-weed, scorpion-weed
	Phacelia integrifolia var. integrifolia Torr. -- accepted -- gypsum phacelia, gypsum scorpion-weed, gypsum scorpionweed
	Phacelia intergrifolia Torr. -- not accepted
	Phacelia invesiana Torr. -- not accepted
	Phacelia ivesiana Torr. -- accepted -- Ives' phacelia, Ives' scorpion-weed
	Phacelia ivesiana var. ivesiana Torr. -- accepted -- Ives' phacelia, Ives' scorpion-weed
	Phacelia leucophylla Torr. -- not accepted
	Phacelia longipes Torr. ex A. Gray -- accepted -- longstalk phacelia
	Phacelia lutea var. glandulifera (Torr. ex S. Watson) Cronquist -- not accepted
	Phacelia neomexicana Thurb. ex Torr. -- accepted -- New Mexico phacelia, New Mexico scorpion-weed, New Mexico scorpionweed
	Phacelia palmeri Torr. ex S. Watson -- accepted -- Palmer's phacelia, Palmer's scorpion-weed, Palmer's scorpionweed
	Phacelia parryi Torr. -- accepted -- Parry's phacelia, Parry's scorpion-weed
	Phacelia popei Torr. & A. Gray -- accepted -- Pope's phacelia, Pope's scorpionweed
	Phacelia ramosissima var. latifolia (Torr.) Cronquist -- accepted -- branched scorpion-weed, branching phacelia
	Phacelia rotundifolia Torr. ex S. Watson -- accepted -- natalgrass, round-leaf scorpion-weed, roundleaf phacelia
	Phacelia viscida (Benth. ex Lindl.) Torr. -- accepted -- tacky phacelia
	Phalaris ludoviciana Torr. ex Trin. -- not accepted
	Phaseolus leiospermus Torr. & A. Gray -- not accepted
	Phaseolus polystachios var. sinuatus (Nutt. ex Torr. & A. Gray) R. Marechal, J.M. Mascherpa & F. Stainier -- accepted -- thicket bean
	Phaseolus sinuatus Nutt. ex Torr. & A. Gray -- not accepted
	Phellopterus montanus Nutt. ex Torr. & A. Gray (pro. syn.) -- not accepted
	Phemeranthus brevifolius (Torr.) Hershk. -- accepted -- pygmy fameflower
	Phemeranthus spinescens (Torr.) Hershk. -- accepted -- spiny fameflower
	Philadelphus oreganus Nutt. ex Torr. & A. Gray -- not accepted -- Oregon mock orange
	Philibertia heterophylla (Engelm. ex Torr.) Jeps. -- not accepted
	Phippsia fasciculata (Torr.) Á. Löve & D. Löve -- not accepted
	Phlox adsurgens Torr. ex A. Gray -- accepted -- northern phlox
	Phlox canescens Torr. & A. Gray -- not accepted
	Phlox hoodii ssp. canescens (Torr. & A. Gray) Wherry -- accepted -- carpet phlox
	Phlox hoodii var. canescens (Torr. & A. Gray) M. Peck -- not accepted
	Phlox longifolia var. stansburyi (Torr.) A. Gray -- not accepted
	Phlox speciosa ssp. occidentalis (Durand ex Torr.) Wherry -- accepted -- showy phlox
	Phlox speciosa ssp. woodhousei (Torr. ex A. Gray) Wherry -- accepted -- Woodhouse's phlox, woody phlox
	Phlox speciosa var. occidentalis (Durand ex Torr.) M. Peck -- not accepted
	Phlox speciosa var. woodhousei Torr. ex A. Gray -- not accepted
	Phlox stansburyi (Torr.) A. Heller -- accepted -- cold-desert phlox, Stansbury's phlox
	Phlox stansburyi ssp. stansburyi (Torr.) A. Heller -- accepted -- cold-desert phlox, Stansbury's phlox
	Phlox triovulata Thurb. ex Torr. -- accepted -- three-seed phlox, threeseed phlox
	Phlox woodhousei (Torr. ex A. Gray) E.E. Nelson -- not accepted
	Phoebanthus grandiflora (Torr. & A. Gray) S.F. Blake -- not accepted
	Phoebanthus grandiflorus (Torr. & A. Gray) S.F. Blake -- accepted -- Florida false sunflower
	Phoebanthus tenuifolia (Torr. & A. Gray) S.F. Blake -- not accepted
	Phoebanthus tenuifolius (Torr. & A. Gray) S.F. Blake -- accepted -- pineland false sunflower
	Pholisma sonorae (Torr. ex A. Gray) Yatsk. -- accepted -- sandfood
	Phoradendron bolleanum ssp. densum (Torr. ex Trel.) Wiens -- not accepted
	Phoradendron bolleanum ssp. pauciflorum (Torr.) Wiens -- not accepted
	Phoradendron bolleanum var. capitellatum (Torr. ex Trel.) Kearney & Peebles -- not accepted
	Phoradendron bolleanum var. densum (Torr. ex Trel.) Fosberg -- not accepted
	Phoradendron bolleanum var. pauciflorum (Torr.) Fosberg -- not accepted
	Phoradendron capitellatum Torr. ex Trel. -- accepted -- downy mistletoe, woolly mistletoe
	Phoradendron densum Torr. ex Trel. -- not accepted -- dense mistletoe
	Phoradendron pauciflorum Torr. -- not accepted -- fir mistletoe
	Phyla cuneifolia (Torr.) Greene -- accepted -- fogfruit, wedgeleaf, wedgeleaf fogfruit
	Phyllanthus ericoides Torr. -- accepted -- heather leaf-flower, heather leafflower
	Phyodina micrantha (Torr.) D.R. Hunt -- not accepted
	Physalis cinerascens var. spathulifolia (Torr.) J.R. Sullivan -- accepted -- smallflower groundcherry
	Physalis crassifolia var. cardiophylla (Torr.) A. Gray -- not accepted
	Physalis lanceolata var. spathulifolia Torr. -- not accepted
	Physalis lobata Torr. -- not accepted
	Physalis pumila var. sonorae Torr. -- not accepted
	Physalis virginiana var. sonorae (Torr.) Waterf. -- not accepted -- groundcherry, smooth groundcherry, Sonora groundcherry
	Physalis viscosa var. spathulifolia (Torr.) A. Gray -- not accepted
	Physaria (Nutt. ex Torr. & A. Gray) A. Gray -- accepted -- twinpod
	Physaria angustifolia (Nutt. ex Torr. & A. Gray) O'Kane & Al-Shehbaz -- accepted -- threadleaf bladderpod
	Physaria gracilis ssp. nuttallii (Torr. & A. Gray) O'Kane & Al-Shehbaz -- accepted -- Nuttall's bladderpod
	Physaria pallida (Torr. & A. Gray) O'Kane & Al-Shehbaz -- accepted -- white bladderpod
	Physocarpus monogynus (Torr.) J.M. Coult. -- accepted -- mountain ninebark
	Physocarpus pauciflorus (Torr. & A. Gray) Piper -- not accepted
	Pinus cembroides var. monophylla (Torr. & Frém.) Voss -- not accepted
	Pinus monophylla Torr. & Frém. -- accepted -- nut pine, one-leaf pine, piñón simple, singleleaf pinyon
	Pinus monophylla var. monophylla Torr. & Frém. -- accepted -- singleleaf pinyon
	Piptatherum nigrum Torr. -- not accepted
	Piptatherum pungens (Torr.) Dorn -- accepted -- mountain ricegrass
	Piptochaetium medium (Speg.) Torres -- accepted
	Piriqueta caroliniana var. viridis (Small) G.S. Torr. -- not accepted
	Pityopsis graminifolia var. tenuifolia (Torr.) Semple & F.D. Bowers -- accepted -- grassleaf goldaster, narrowleaf silkgrass
	Pityopsis oligantha (Chapm. ex Torr. & A. Gray) Small -- accepted -- grassleaf goldaster
	Plagiochila porelloides (Torr. ex Nees) Lindenb. -- accepted
	Plagiochila porelloides var. porelloides (Torr. ex Nees) Lindenb. -- accepted
	Plagiopus oederi var. alpina (Schwaegr.) Torre & Sarnth. -- not accepted
	Plantago eriopoda Torr. -- accepted -- alkali plantain, red-woolly plantain, redwood plantain, redwool plantain, saline plantain
	Platanthera hookeri (Torr. ex A. Gray) Lindl. -- accepted -- Hooker's orchid
	Plectritis macrocera Torr. & A. Gray -- accepted -- longhorn plectritis, white cornsalad
	Plectritis macrocera ssp. macrocera Torr. & A. Gray -- accepted -- longhorn plectritis
	Pleuraphis Torr. -- not accepted -- galleta grass, Pleuraphis
	Pleuraphis jamesii Torr. -- not accepted -- galleta, James' galleta
	Poa aquatica var. americana Torr. -- not accepted
	Poa arachnifera Torr. -- accepted -- Texas bluegrass
	Poa canadensis (Michx.) Torr. -- not accepted
	Poa compressa var. sylvestris Torr. -- not accepted
	Poa debilis Torr. -- not accepted
	Poa dentata Torr. -- not accepted
	Poa elongata Torr. -- not accepted
	Poa elongata Torr. ex Spreng. -- not accepted
	Poa fasciculata Torr. -- not accepted
	Poa festucoides J. Le Conte ex Torr. -- not accepted
	Poa hirsuta var. spectabilis (Pursh) Torr. -- not accepted
	Poa oxylepis Torr. -- not accepted
	Podosemum gracillimum (Torr.) Bush -- not accepted
	Pogogyne serpylloides (Torr.) A. Gray -- accepted -- thymeleaf mesamint
	Polanisia dodecandra ssp. trachysperma (Torr. & A. Gray) Iltis -- accepted -- clammyweed, red-whisker clammyweed, sandyseed clammyweed, western clammyweed
	Polanisia dodecandra var. trachysperma (Torr. & A. Gray) Iltis -- not accepted
	Polanisia jamesii (Torr. & A. Gray) Iltis -- accepted -- James' clammyweed
	Polanisia tenuifolia Torr. & A. Gray -- accepted -- slenderleaf clammyweed
	Polanisia trachysperma Torr. & A. Gray -- not accepted
	Poliomintha incana (Torr.) A. Gray -- accepted -- frosted mint, hoary rosemarymint, rosemary mint
	Poliomintha mollis (Torr.) A. Gray -- not accepted
	Polionintha incana (Torr.) A. Gray -- not accepted
	Polygala balduinii var. chlorgena Torr. & A. Gray -- not accepted
	Polygala chapmanii Torr. & A. Gray -- accepted -- Chapman's milkwort
	Polygala grandiflora var. angustifolia Torr. & A. Gray -- not accepted -- showy milkwort
	Polygala hookeri Torr. & A. Gray -- accepted -- Hooker's milkwort
	Polygala leptocaulis Torr. & A. Gray -- accepted -- swamp milkwort
	Polygala nuttallii Torr. & A. Gray -- accepted -- Nuttall's milkwort
	Polygala senega var. latifolia Torr. & A. Gray -- not accepted -- Seneca snakeroot
	Polypogon monspeliensis var. monolepis Torr. -- not accepted
	Polypteris hookeriana (Torr. & A. Gray) A. Gray -- not accepted
	Polypteris sphacelata (Nutt. ex Torr.) Trel. -- not accepted
	Pomaria jamesii (Torr. & A. Gray) Walp. -- accepted -- James' holdback
	Pontederia cordata var. angustifolia (Pursh) Torr. -- not accepted
	Pontederia cordata var. lancifolia (Muhl. ex Elliott) Torr. -- not accepted
	Populus balsamifera ssp. trichocarpa (Torr. & A. Gray) Brayshaw -- not accepted -- balsam poplar, black cottonwood
	Populus trichocarpa Torr. & A. Gray ex Hook. -- accepted -- black cottonwood
	Porterella Torr. -- accepted
	Porterella carnosula (Hook. & Arn.) Torr. -- accepted -- fleshy porterella, porterplant
	Potentilla anserina var. grandis Torr. & A. Gray -- not accepted
	Potentilla canadensis var. pumila (Poir.) Torr. & A. Gray -- not accepted
	Potentilla canadensis var. simplex (Michx.) Torr. & A. Gray -- not accepted
	Potentilla effusa var. gossypina Nutt. ex Torr. & A. Gray -- not accepted
	Potentilla egedii ssp. grandis (Torr. & A. Gray) Hultén -- not accepted
	Potentilla egedii var. grandis (Torr. & A. Gray) J.T. Howell -- not accepted
	Potentilla flabellifolia Hook. ex Torr. & A. Gray -- accepted -- high mountain cinquefoil, Mount Rainier cinquefoil
	Potentilla gracilis var. flabelliformis (Lehm.) Nutt. ex Torr. & A. Gray -- accepted -- fanleaf cinquefoil, slender cinquefoil
	Potentilla leneophylla Torr. & James ex Eaton -- not accepted
	Potentilla leucophylla Torr. -- not accepted
	Potentilla multifoliata (Torr.) Kearney & Peebles -- not accepted
	Potentilla multifoliolata (Torr.) Kearney & Peebles -- not accepted
	Potentilla pensylvanica var. bipinnatifida (Douglas ex Hook.) Torr. & A. Gray -- not accepted
	Potentilla pentandra Engelm. ex Torr. & A. Gray -- not accepted
	Potentilla pickeringii (Torr. ex A. Gray) Greene -- not accepted
	Potentilla rivalis var. pentandra (Engelm. ex Torr. & A. Gray) S. Watson -- not accepted -- brook cinquefoil, cinquefoil
	Prenanthes barbata (Torr. & A. Gray) Milstead -- accepted -- barbed rattlesnakeroot
	Prenanthes nana (Bigelow) Torr. -- not accepted -- dwarf rattlesnakeroot
	Prenanthes serpentaria var. barbata Torr. & A. Gray -- not accepted
	Primula angustifolia Torr. -- accepted -- alpine primrose
	Prosartes hookeri Torr. -- accepted -- drops-of-gold
	Prosartes hookeri var. hookeri Torr. -- not accepted -- drops-of-gold
	Prosartes hookeri var. trachyandra (Torr.) Kartesz -- not accepted -- drops of gold
	Prosartes trachyandra Torr. -- not accepted
	Prosopis chilensis var. glandulosa (Torr.) Standl. -- not accepted
	Prosopis glandulosa Torr. -- accepted -- honey mesquite
	Prosopis glandulosa var. glandulosa Torr. -- accepted -- honey mesquite
	Prosopis juliflora var. glandulosa (Torr.) Cockerell -- not accepted
	Prosopis odorata Torr. & Frém. -- not accepted
	Prunus americana var. mollis (Torr.) Torr. & A. Gray -- not accepted
	Prunus fasciculata (Torr.) A. Gray -- accepted -- desert almond, desert peach
	Prunus fasciculata var. fasciculata (Torr.) A. Gray -- accepted -- desert almond
	Prunus glandulosa (Hook.) Torr. & A. Gray -- not accepted
	Prunus mollis Torr. -- not accepted
	Prunus virginiana var. demissa (Nutt.) Torr. -- accepted -- western chokecherry
	Psathyrotes ramosissima (Torr.) A. Gray -- accepted -- turtleback, velvet turtleback
	Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartm. -- accepted -- sticky starwort, sticky-starwort, tuber starwort
	Psilocarya Torr. -- not accepted
	Psilocarya scirpoides Torr. -- not accepted
	Psoralea digitata Nutt. ex Torr. & A. Gray -- not accepted
	Psoralea floribunda Nutt. ex Torr. & A. Gray -- not accepted
	Psoralea linearifolia Torr. & A. Gray -- not accepted
	Psoralea macrostachya var. rhombifolia Torr. -- not accepted
	Psoralea obtusifolia Torr. & A. Gray -- not accepted
	Psoralea psoralioides var. gracilis (Torr. & A. Gray) F.L. Freeman -- not accepted
	Psoralea rhombifolia Torr. & A. Gray -- not accepted
	Psoralea simplex Nutt. ex Torr. & A. Gray -- not accepted
	Psoralea stipulata Torr. & A. Gray -- not accepted
	Psoralea subacaulis Torr. & A. Gray -- not accepted
	Psoralea tenuiflora var. floribunda (Nutt. ex Torr. & A. Gray) Rydb. -- not accepted
	Psoralidium digitatum (Nutt. ex Torr. & A. Gray) Rydb. -- not accepted
	Psoralidium linearifolium (Torr. & A. Gray) Rydb. -- not accepted
	Psorothamnus arborescens (Torr. ex A. Gray) Barneby -- accepted -- Mojave dalea, Mojave indigobush, Mojave smokebush
	Psorothamnus arborescens var. arborescens (Torr. ex A. Gray) Barneby -- accepted -- Mojave indigobush
	Psorothamnus fremontii (Torr. ex A. Gray) Barneby -- accepted -- Fremont dalea, Fremont's dalea
	Psorothamnus fremontii var. fremontii (Torr. ex A. Gray) Barneby -- accepted -- Fremont false dalea, Fremont's dalea
	Psorothamnus polydenius (Torr. ex S. Watson) Rydb. -- accepted -- Nevada dalea
	Psorothamnus polydenius var. polydenius (Torr. ex S. Watson) Rydb. -- accepted -- Nevada dalea, Nevada smokebush
	Psorothamnus schottii (Torr.) Barneby -- accepted -- indigobush, Schott false dalea, Schott's dalea
	Ptelea baldwinii Torr. & A. Gray -- not accepted
	Ptelea trifoliata ssp. trifoliata var. mollis Torr. & Gray -- not accepted -- common hoptree
	Ptelea trifoliata var. mollis Torr. & A. Gray -- accepted -- common hoptree
	Pterogonum alatum (Torr.) H. Gross -- not accepted
	Pteryxia (Nutt. ex Torr. & A. Gray) Nutt. ex J.M. Coult. & Rose -- accepted -- springparsley, wavewing
	Pteryxia terebinthina var. albiflora (Torr. & A. Gray) Mathias -- not accepted -- smoothshore springparsley, turpentine wavewing
	Pteryxia terebinthina var. foeniculacea (Torr. & A. Gray) Mathias -- accepted -- turpentine wavewing
	Ptilocalyx greggii Torr. & A. Gray -- not accepted
	Ptiloria pauciflora (Torr.) Raf. -- not accepted
	Puccinellia fasciculata (Torr.) E.P. Bicknell -- accepted -- saltmarsh alkaligrass, Torrey alkaligrass
	Puccinellia fasciculata var. fasciculata (Torr.) E.P. Bicknell -- not accepted
	Puccinellia pallida (Torr.) T. Koyama -- not accepted
	Puccinellia pallida (Torr.) R.T. Clausen -- not accepted
	Puccinellia pallida ssp. pallida (Torr.) R.T. Clausen -- not accepted
	Pulmonaria ciliata James ex Torr. -- not accepted
	Purshia ericifolia (Torr. ex A. Gray) Henrickson -- accepted -- heath cliffrose
	Purshia mexicana var. stansburiana (Torr.) S.L. Welsh -- not accepted
	Purshia mexicana var. stansburyana (Torr.) S.L. Welsh -- accepted
	Purshia stansburiana (Torr.) Henrickson -- not accepted -- Stansbury's cliffrose
	Purshia stansburyana (Torr.) Henrickson -- not accepted -- Stansbury's cliffrose
	Pycnanthemum albescens Torr. & A. Gray -- accepted -- whiteleaf mountainmint
	Pycnanthemum californicum Torr. ex T. Durand -- accepted -- Sierra mint
	Pycnanthemum clinopodioides Torr. & A. Gray -- accepted -- basil mountainmint
	Pycnanthemum clinopodopodes Torr. & A. Gray -- not accepted
	Pyrola uliginosa Torr. & A. Gray ex Torr. -- not accepted
	Pyrrocoma racemosa (Nutt.) Torr. & A. Gray -- accepted -- clustered goldenweed
	Pyrrocoma racemosa var. racemosa (Nutt.) Torr. & A. Gray -- accepted -- clustered goldenweed
	Quamoclidion multiflorum (Torr.) Torr. ex A. Gray -- not accepted
	Quercus agrifolia var. oxyadenia (Torr.) J.T. Howell -- not accepted -- coastal live oak
	Quercus breviloba (Torr.) Sarg. -- not accepted
	Quercus californica (Torr.) Cooper -- not accepted
	Quercus durandii var. breviloba (Torr.) E.J. Palmer -- accepted -- bastard oak
	Quercus emoryi Torr. -- accepted -- Emory's oak
	Quercus gunnisonii (Torr. & A. Gray) Rydb. -- not accepted
	Quercus oblongifolia Torr. -- accepted -- Mexican blue oak
	Quercus shumardii var. microcarpa (Torr.) Shinners -- not accepted
	Quercus sinuata var. breviloba (Torr.) C.H. Mull. -- not accepted -- bastard oak, white shin oak
	Quercus undulata Torr. -- not accepted
	Quercus X acutidens Torr. -- accepted
	Quercus X undulata Torr. -- accepted
	Quincula lobata (Torr.) Raf. -- accepted -- Chinese lantern, Chinese-lantern, purple groundcherry, purpleflower groundcherry
	Raimannia rhombipetala (Nutt. ex Torr. & A. Gray) Rose -- not accepted
	Ranunculus delphiniifolius Torr. ex Eaton -- not accepted
	Ranunculus flammula var. laxicaulis Torr. & A. Gray -- not accepted
	Ranunculus laxicaulis (Torr. & A. Gray) Darby -- accepted -- Mississippi buttercup
	Ranunculus laxicaulis var. laxicaulis (Torr. & A. Gray) Darby -- not accepted -- Mississippi buttercup
	Ranunculus occidentalis var. parviflorus Torr. -- not accepted
	Ranunculus reptans var. intermedius (Hook.) Torr. & A. Gray -- not accepted
	Ranunculus reptans var. ovalis (Bigelow) Torr. & A. Gray -- not accepted
	Ranunculus uncinatus var. parviflorus (Torr.) L.D. Benson -- not accepted -- Idaho buttercup
	Ratibida peduncularis (Torr. & A. Gray) Barnhart -- accepted -- naked Mexicanhat, naked prairie coneflower
	Ratibida peduncularis var. peduncularis (Torr. & A. Gray) Barnhart -- accepted -- naked Mexicanhat
	Reboulea pallens var. major (Torr.) Farw. -- not accepted
	Reboulea pensylvanica var. major (Torr.) A. Gray -- not accepted
	Reboulea truncata Torr. ex Munro -- not accepted
	Rhododendron arborescens (Pursh) Torr. -- accepted -- smooth azalea, sweet azalea
	Rhododendron calendulaceum (Michx.) Torr. -- accepted -- flame azalea
	Rhododendron canadense (L.) Torr. -- accepted -- rhodora
	Rhododendron hispidum (Pursh) Torr. -- not accepted
	Rhododendron nitidum (Pursh) Torr. -- not accepted
	Rhododendron nudiflorum (L.) Torr. -- not accepted
	Rhododendron occidentale (Torr. & A. Gray) A. Gray -- accepted -- California azalea, Sonoma azalea, western azalea
	Rhododendron occidentale var. occidentale (Torr. & A. Gray) A. Gray -- not accepted -- western azalea
	Rhododendron viscosum (L.) Torr. -- accepted -- clammy azalea, swamp azalea, swamp honeysuckle, Texas azalea
	Rhus diversiloba Torr. & A. Gray -- not accepted
	Rhus glabra var. occidentalis Torr. -- not accepted
	Rhynchosia intermedia (Torr. & A. Gray) Small -- not accepted
	Rhynchosia latifolia Nutt. ex Torr. & A. Gray -- accepted -- broadleaf snoutbean, prairie snoutbean
	Rhynchosia senna var. texana (Torr. & A. Gray) M.C. Johnst. -- accepted -- rosary bean, Texas snoutbean
	Rhynchosia texana Torr. & A. Gray -- not accepted
	Rhynchosia tomentosa var. erecta (Walter) Torr. & A. Gray -- not accepted
	Rhynchosia tomentosa var. mollissima (Elliott) Torr. & A. Gray -- accepted -- twining snoutbean
	Rhynchosia tomentosa var. monophylla (Michx.) Torr. & A. Gray -- not accepted
	Rhynchosia tomentosa var. volubilis (Michx.) Torr. & A. Gray -- not accepted
	Rhynchospora capillacea Torr. -- accepted -- horned beakrush, needle beaksedge
	Rhynchospora macrostachya Torr. ex A. Gray -- accepted -- tall horned beaksedge
	Rhynchospora macrostachya var. macrostachya Torr. ex A. Gray -- not accepted -- tall horned beaksedge
	Rhynchospora scirpoides (Torr.) A. Gray -- accepted -- longbeak beaksedge
	Richardia tricocca (Torr. & A. Gray) Standl. -- accepted -- prairie Mexican clover
	Richardia tricocco (Torr. & A. Gray) Standl. -- not accepted
	Rosa foliolosa Nutt. ex Torr. & A. Gray -- accepted -- white prairie rose
	Rosa setigera var. glabra Torr. & A. Gray -- not accepted
	Rosa setigera var. tomentosa Torr. & A. Gray -- not accepted -- climbing rose
	Rottboellia cylindrica (Michx.) Torr. -- not accepted
	Rubus deliciosus Torr. -- accepted -- delicious raspberry
	Rubus flagellaris var. humifusus (Torr. & A. Gray) B. Boivin -- not accepted
	Rubus idaeus var. americanus Torr. -- not accepted
	Rubus leucodermis Douglas ex Torr. & A. Gray -- accepted -- western raspberry, whitebark raspberry
	Rubus leucodermis var. leucodermis Douglas ex Torr. & A. Gray -- not accepted -- whitebark raspberry
	Rubus occidentalis var. leucodermis (Douglas ex Torr. & A. Gray) Focke -- not accepted
	Rudbeckia alismifolia Torr. & A. Gray -- not accepted
	Rudbeckia graminifolia (Torr. & A. Gray) C.L. Boynt. & Beadle -- accepted -- grassleaf coneflower
	Rudbeckia grandiflora var. alismifolia (Torr. & A. Gray) Cronquist -- accepted -- rough coneflower
	Rudbeckia heliopsidis Torr. & A. Gray -- accepted -- sunfacing coneflower
	Rudbeckia heterophylla Torr. & A. Gray -- not accepted
	Rudbeckia laciniata var. heterophylla (Torr. & A. Gray) Fernald & B.G. Schub. -- accepted
	Rudbeckia pinnatiloba (Torr. & A. Gray) Beadle -- not accepted
	Rudbeckia triloba var. pinnatiloba Torr. & A. Gray -- accepted -- browneyed Susan
	Ruellia pedunculata Torr. ex A. Gray -- accepted -- stalked wild petunia
	Ruellia pedunculata ssp. pedunculata Torr. ex A. Gray -- accepted -- stalked wild petunia
	Rumex hymenosepalus Torr. -- accepted -- canaigre, canaigre dock
	Rumex salicifolius var. denticulatus Torr. -- not accepted -- California dock, toothed willow dock
	Rydbergia grandiflora (Torr. & A. Gray ex A. Gray) Greene -- not accepted
	Sabatia campanulata (L.) Torr. -- accepted -- slender rose gentian, slender rosegentian
	Sabatia lanceolata (Walter) Torr. & A. Gray -- not accepted
	Sabina osteosperma (Torr.) Antoine -- not accepted
	Sabulina brevifolia (Nutt. ex Torr. & A. Gray) Small -- not accepted
	Sagina decumbens (Elliott) Torr. & A. Gray -- accepted -- beach pearlwort, trailing pearlwort
	Sagina decumbens ssp. decumbens (Elliott) Torr. & A. Gray -- accepted -- trailing pearlwort
	Salazaria Torr. -- accepted -- bladdersage
	Salazaria mexicana Torr. -- accepted -- bladdersage, Mexican bladdersage
	Salicornia bigelovii Torr. -- accepted -- dwarf saltwort
	Salix bigelovii Torr. -- not accepted
	Salix lasiolepis var. bigelovii (Torr.) Bebb -- not accepted -- Bigelow's willow
	Salix nigra var. falcata (Pursh) Torr. -- not accepted
	Salix petiolaris var. grisea (Willd.) Torr. -- not accepted
	Salvia azurea ssp. pitcheri (Torr. ex Benth.) Epling -- not accepted
	Salvia pitcheri Torr. ex Benth. -- not accepted
	Salvia texana (Scheele) Torr. -- accepted -- Texas sage
	Sambucus pubens var. arborescens Torr. & A. Gray -- not accepted
	Sambucus racemosa ssp. pubens var. arborescens (Torr. & A. Gray) A. Gray -- not accepted
	Sambucus racemosa ssp. pubens var. leucocarpa (Torr. & A. Gray) Cronquist -- not accepted
	Sambucus racemosa var. arborescens (Torr. & A. Gray) A. Gray -- accepted -- Pacific red elder
	Sambucus racemosa var. leucocarpa (Torr. & A. Gray) Cronquist -- accepted -- European red elderberry
	Sanicula tuberosa Torr. -- accepted -- turkey pea
	Sarcobatus vermiculatus (Hook.) Torr. -- accepted -- black greasewood, greasewood
	Sarcobatus vermiculatus var. vermiculatus (Hook.) Torr. -- not accepted -- greasewood
	Sarcodes Torr. -- accepted -- snow plant, snowplant
	Sarcodes sanguinea Torr. -- accepted -- snowplant
	Sarracenia purpurea ssp. heterophylla (Eaton) Torr. -- not accepted
	Sarracenia purpurea var. heterophylla (Eaton) Torr. -- not accepted
	Satureja glabella var. angustifolia (Torr.) Svenson -- not accepted
	Saxifraga jamesii Torr. -- not accepted
	Saxifraga peltata Torr. ex Benth. -- not accepted
	Saxifraga sullivantii Torr. & A. Gray -- not accepted
	Saxifraga tolmiei Torr. & A. Gray -- not accepted -- alpine saxifrage, Tolmie's saxifrage
	Schaueria linearifolia Torr. -- not accepted
	Schaueria parvifolia Torr. -- not accepted
	Schizachne purpurascens (Torr.) Swallen -- accepted -- false melic, false melic grass
	Schizachne purpurascens f. purpurascens (Torr.) Swallen -- not accepted
	Schizachne purpurascens ssp. purpurascens (Torr.) Swallen -- accepted
	Schizachne purpurascens var. purpurascens (Torr.) Swallen -- not accepted
	Schoenolirion Torr. ex Durand -- accepted -- sunnybell
	Schoenoplectus fluviatilis (Torr.) M.T. Strong -- not accepted -- river bulrush
	Schoenoplectus subterminalis (Torr.) Soják -- accepted -- swaying bulrush
	Schrankia angustata Torr. & A. Gray -- not accepted
	Scirpus carinatus (Hook. & Arn. ex Torr.) A. Gray, non Sm. -- not accepted
	Scirpus cernuus ssp. californicus (Torr.) Thorne -- not accepted
	Scirpus cernuus var. californicus (Torr.) Beetle -- not accepted
	Scirpus cylindricus (Torr.) Britton -- not accepted
	Scirpus fluviatilis (Torr.) A. Gray -- not accepted
	Scirpus glaucus Torr. -- not accepted
	Scirpus nanus var. anachaetus (Torr.) Britton -- not accepted
	Scirpus rostellatus Torr. -- not accepted
	Scirpus subterminalis Torr. -- not accepted
	Scirpus subterminalis var. cylindricus (Torr.) T. Koyama -- not accepted
	Sclerachne Torr. ex Trin. -- not accepted
	Sclerachne arkansana (Nutt.) Torr. ex Trin. -- not accepted
	Scleria baldwinii (Torr.) Steud. -- accepted -- Baldwin's nutrush
	Sclerochloa arenaria var. fasciculata (Torr.) A. Gray -- not accepted
	Scoliopus Torr. -- accepted -- fetid adderstongue
	Scoliopus bigelovii Torr. -- accepted -- California fetid adderstongue
	Scutellaria parvula var. missouriensis (Torr.) Goodman & C.A. Lawson -- accepted -- Leonard's skullcap
	Scutellaria resinosa Torr. -- accepted -- sticky skullcap
	Sedum lanceolatum Torr. -- accepted -- lance-leaf stonecrop, lanceleaf stonecrop, spearleaf stonecrop
	Sedum lanceolatum ssp. lanceolatum Torr. -- not accepted -- lance-leaf stonecrop, spearleaf stonecrop
	Sedum lanceolatum var. lanceolatum Torr. -- accepted -- spearleaf stonecrop
	Sedum nuttallii Torr. & E. James ex Eaton -- accepted -- yellow stonecrop
	Selenia dissecta Torr. & A. Gray -- accepted -- Texas selenia
	Selinocarpus angustifolius Torr. -- not accepted -- narrowleaf moonpod
	Selinocarpus parvifolius (Torr.) Standl. -- not accepted -- littleleaf moonpod
	Senecio aureus var. borealis Torr. & A. Gray -- not accepted
	Senecio cymbalarioides var. borealis (Torr. & A. Gray) Greenm. -- not accepted
	Senecio douglasii var. jamesii (Torr. & A. Gray) Ediger ex Correll & M.C. Johnst. -- not accepted
	Senecio eurycephalus Torr. & A. Gray -- not accepted -- widehead groundsel
	Senecio eurycephalus var. eurycephalus Torr. & A. Gray -- not accepted -- Siskiyou ragwort
	Senecio fremontii Torr. & A. Gray -- accepted -- dwarf mountain ragwort, Fremont's groundsel
	Senecio fremontii var. fremontii Torr. & A. Gray -- accepted -- dwarf mountain ragwort
	Senecio hookeri Torr. & A. Gray -- not accepted
	Senecio millefolium Torr. & A. Gray -- not accepted -- piedmont ragwort
	Senecio millefolius Torr. & A. Gray -- not accepted
	Senecio multilobatus Torr. & A. Gray ex A. Gray -- not accepted -- lobeleaf groundsel
	Senecio obovatus var. elliottii (Torr. & A. Gray) Fernald -- not accepted
	Senecio riddellii Torr. & A. Gray -- accepted -- Riddell's groundsel, Riddell's ragwort, sand groundsel
	Senecio spartioides Torr. & A. Gray -- accepted -- broom groundsel, broom-like ragwort, broomlike ragwort
	Senecio spartioides var. fremontii (Torr. & A. Gray) Greenm. -- not accepted
	Senecio spartioides var. spartioides Torr. & A. Gray -- not accepted -- broom-like ragwort
	Senecio streptanthifolius var. borealis (Torr. & A. Gray) J.F. Bain -- not accepted -- Rocky Mountain groundsel
	Serjania incisa Torr. -- accepted -- slashleaf slipplejack
	Setaria glauca var. purpurascens (Kunth) Torr. -- not accepted
	Setcreasea brevifolia (Torr.) Pilg. -- not accepted
	Setcreasea leiandra (Torr.) Pilg. -- not accepted
	Sherwoodia galacifolia (Torr. & A. Gray) House -- not accepted
	Shortia Torr. & A. Gray -- accepted
	Shortia galacifolia Torr. & A. Gray -- accepted -- Oconee bells, Oconee-bells
	Shortia galacifolia var. galacifolia Torr. & A. Gray -- accepted -- Oconee bells
	Sida elliottii Torr. & A. Gray -- accepted -- Elliott's fanpetals
	Sida elliottii var. elliottii Torr. & A. Gray -- accepted -- Elliott's fanpetals
	Sida filicaulis Torr. & A. Gray -- not accepted
	Sida hederacea (Douglas ex Hook.) Torr. ex A. Gray -- not accepted -- alkali mallow, alkali sida, dollar weed
	Sida texana (Torr. & A. Gray) Small -- not accepted
	Sidalcea diploscypha (Torr. & A. Gray) A. Gray -- accepted -- fringed checkerbloom
	Sidalcea malviflora ssp. californica (Nutt. ex Torr. & A. Gray) C.L. Hitchc. -- accepted -- California checkerbloom
	Sidalcea malviflora var. californica (Nutt. ex Torr. & A. Gray) Jeps. -- not accepted
	Sidalcea oregana (Nutt. ex Torr. & A. Gray) A. Gray -- accepted -- Oregon checkerbloom, Oregon checkermallow
	Sidalcea oregana ssp. oregana (Nutt. ex Torr. & A. Gray) A. Gray -- accepted -- Oregon checkerbloom, Oregon checkermallow
	Sidalcea oregana ssp. oregana var. oregana (Nutt. ex Torr. & A. Gray) A. Gray -- not accepted -- Oregon checkerbloom, Oregon checkermallow
	Sidalcea oregana var. oregana (Nutt. ex Torr. & A. Gray) A. Gray -- not accepted -- Oregon checkerbloom
	Sieglingia mutica (Torr.) Kuntze -- not accepted
	Silphium compositum ssp. ovatifolium (Torr. & A. Gray) Sweeny & T.R. Fisher -- not accepted
	Silphium compositum var. ovatifolium Torr. & A. Gray -- not accepted -- kidneyleaf rosinweed
	Silphium compositum var. reniforme (Raf. ex Nutt.) Torr. & A. Gray -- not accepted -- kidneyleaf rosinweed
	Silphium integrifolium var. laeve Torr. & A. Gray -- accepted -- wholeleaf rosinweed
	Silphium ovatifolium (Torr. & A. Gray) Small -- not accepted
	Siphonoglossa longiflora (Torr.) A. Gray -- not accepted -- longflower tubetongue
	Siphonoglossa pilosella (Nees) Torr. -- not accepted -- hairy tubetongue
	Siphonychia americana (Nutt.) Torr. & A. Gray -- not accepted
	Sisymbrium dentatum Torr. -- not accepted
	Sisymbrium linifolium (Nutt.) Nutt. ex Torr. & A. Gray -- accepted -- flaxleaf plainsmustard
	Solanum fendleri A. Gray ex Torr. -- not accepted -- Fendler horsenettle, Fendler's horsenettle
	Solanum fendleri var. fendleri A. Gray ex Torr. -- not accepted -- Fendler's horse-nettle, Fendler's horsenettle
	Solanum jamesii Torr. -- accepted -- wild potato
	Solanum umbelliferum var. glabrescens Torr. -- not accepted -- bluewitch
	Solanum umbelliferum var. incanum Torr. -- not accepted -- bluewitch
	Solidago amplexicaulis Torr. & A. Gray ex A. Gray non M. Martens -- not accepted
	Solidago angusta Torr. & A. Gray -- not accepted
	Solidago bicolor var. concolor Torr. & A. Gray -- not accepted
	Solidago boothii var. brachyphylla (Chapm. ex Torr. & A. Gray) A. Gray -- not accepted
	Solidago boottii var. brachyphylla (Chapm. ex Torr. & A. Gray) A. Gray -- not accepted
	Solidago brachyphylla Chapm. ex Torr. & A. Gray -- accepted -- Dixie goldenrod
	Solidago buckleyi Torr. & A. Gray -- accepted -- Buckley's goldenrod
	Solidago caesia var. curtisii (Torr. & A. Gray) Alph. Wood -- not accepted -- mountain decumbent goldenrod
	Solidago canadensis var. scabra Torr. & A. Gray -- not accepted -- Canada goldenrod, Canadian goldenrod
	Solidago curtisii Torr. & A. Gray -- accepted -- mountain decumbent goldenrod
	Solidago curtisii var. curtisii Torr. & A. Gray -- accepted
	Solidago drummondii Torr. & A. Gray -- accepted -- Drummond's goldenrod
	Solidago elliottii Torr. & A. Gray -- not accepted
	Solidago gracillima Torr. & A. Gray -- not accepted -- Virginia goldenrod
	Solidago houghtonii Torr. & A. Gray ex A. Gray -- accepted -- Houghton's goldenrod
	Solidago lancifolia Torr. & A. Gray -- accepted -- lance-leaf goldenrod
	Solidago leavenworthii Torr. & A. Gray -- accepted -- Leavenworth's goldenrod
	Solidago leptocephala Torr. & A. Gray -- not accepted
	Solidago monticola Torr. & A. Gray -- not accepted
	Solidago neglecta Torr. & A. Gray -- not accepted
	Solidago nitida Torr. & A. Gray -- accepted -- shiny goldenrod
	Solidago occidentalis (Nutt.) Torr. & A. Gray -- not accepted
	Solidago patula ssp. strictula Torr. & A. Gray -- accepted -- roundleaf goldenrod
	Solidago patula var. strictula Torr. & A. Gray -- not accepted -- roundleaf goldenrod
	Solidago petiolaris var. angusta (Torr. & A. Gray) A. Gray -- not accepted -- downy ragged goldenrod
	Solidago ptarmicoides (Torr. & A. Gray) B. Boivin -- accepted -- prairie goldenrod, upland white aster, verge-d'or faux-ptarmica, white flat-top goldenrod
	Solidago rigidiuscula (Torr. & A. Gray) Porter -- not accepted
	Solidago roanensis var. monticola (Torr. & A. Gray) Fernald -- not accepted
	Solidago scaberrima Torr. & A. Gray -- not accepted
	Solidago shortii Torr. & A. Gray -- accepted -- Short's goldenrod
	Solidago speciosa var. angustata Torr. & A. Gray -- not accepted
	Solidago speciosa var. rigidiuscula Torr. & A. Gray -- accepted -- showy goldenrod
	Solidago stricta ssp. gracillima (Torr. & A. Gray) Semple -- accepted -- Virginia goldenrod
	Solidago uliginosa var. linoides (Torr. & A. Gray) Fernald -- not accepted -- bog goldenrod
	Solidago uliginosa var. neglecta (Torr. & A. Gray) Fernald -- not accepted
	Solidago uliginosa var. terrae-novae (Torr. & A. Gray) Fernald -- not accepted -- bog goldenrod
	Solidago verna M.A. Curtis ex Torr. & A. Gray -- accepted -- springflowering goldenrod
	Sophora affinis Torr. & A. Gray -- not accepted -- Eve's necklacepod, Texas sophora
	Sophora tomentosa var. truncata Torr. & A. Gray -- accepted -- yellow necklacepod
	Sorengia longifolia (Torr.) Zuloaga & Morrone -- not accepted
	Sorengia longifolia ssp. longifolia (Torr.) Zuloaga & Morrone -- not accepted
	Sphaeralcea coccinea ssp. dissecta (Nutt. ex Torr. & A. Gray) Kearney -- not accepted
	Sphaeralcea coccinea var. dissecta (Nutt. ex Torr. & A. Gray) Garrett -- not accepted
	Sphaeralcea emoryi Torr. ex A. Gray -- accepted -- Emory's desertmallow, Emory's globemallow
	Sphaeralcea emoryi ssp. emoryi Torr. ex A. Gray -- not accepted -- Emory's globemallow
	Sphaeralcea emoryi var. emoryi Torr. ex A. Gray -- not accepted -- globemallow
	Sphaeralcea grossulariifolia ssp. pedata (Torr. ex A. Gray) Kearney -- accepted -- berryleaf globemallow, gooseberryleaf globemallow
	Sphaeralcea grossulariifolia var. pedata (Torr. ex A. Gray) Kearney -- not accepted
	Sphaeralcea incana Torr. ex A. Gray -- accepted -- gray globemallow, soft globe-mallow
	Sphaeralcea incana ssp. incana Torr. ex A. Gray -- accepted -- gray globemallow
	Sphaeralcea rivularis (Douglas ex Hook.) Torr. -- not accepted
	Sphenopholis obtusata var. major (Torr.) Erdman -- not accepted
	Sphenopholis pallens ssp. major (Torr.) Scribn. -- not accepted
	Sphenopholis pallens var. major (Torr.) Scribn. ex B.L. Rob. -- not accepted
	Spigelia loganioides (Torr. & A. Gray ex Endl. & Fenzl) A. DC. -- accepted -- Florida pinkroot
	Spigelia texana (Torr. & A. Gray) A. DC. -- accepted -- Texas pinkroot
	Spiraea californica Torr. -- not accepted
	Spiraea millefolium Torr. -- not accepted
	Spiraea monogyna Torr. -- not accepted
	Spiraea pectinata (Pursh) Torr. & A. Gray -- not accepted
	Sporobolus airoides (Torr.) Torr. -- accepted -- alkali sacaton, alkali-sacaton
	Sporobolus airoides var. airoides (Torr.) Torr. -- accepted
	Sporobolus compressus (Torr.) Kunth -- not accepted
	Sporobolus cryptandrus (Torr.) A. Gray -- accepted -- sand dropseed
	Sporobolus cryptandrus var. typicus (Torr.) E.K. Jones & Fassett -- not accepted
	Sporobolus cuspidatus (Torr. ex Hook.) Alph. Wood -- not accepted
	Sporobolus depauperatus (Torr. ex Hook.) Scribn. -- not accepted
	Sporobolus longifolius (Torr.) Alph. Wood -- not accepted
	Sporobolus tricholepis (Torr.) J.M. Coult. -- not accepted
	Sporobolus utilis (Torr.) Scribn. -- not accepted
	Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood -- accepted -- poverty dropseed, poverty grass
	Sporobolus vaginiflorus var. vaginiflorus (Torr. ex A. Gray) Alph. Wood -- accepted -- poverty dropseed
	Spraguea Torr. -- not accepted
	Spraguea umbellata Torr. -- not accepted
	Stellaria borealis var. crispa (Cham. & Schltdl.) Fenzl ex Torr. & A. Gray -- not accepted
	Stellaria jamesiana Torr. -- not accepted
	Stellaria littoralis Torr. -- accepted -- beach starwort
	Stellaria nuttallii Torr. & A. Gray -- not accepted
	Stenandrium barbatum Torr. & A. Gray -- accepted -- early shaggytuft
	Stenophyllus warei (Torr.) Britton -- not accepted
	Stephanomeria pauciflora (Torr.) A. Nelson -- accepted -- brownplume wirelettuce, fewflower wirelettuce, skeletonweed, wire lettuce, wire-lettuce
	Stephanomeria pauciflora var. pauciflora (Torr.) A. Nelson -- not accepted
	Stillingia salicifolia (Torr.) Raf. -- not accepted
	Stillingia spinulosa Torr. -- accepted -- annual stillingia, annual toothleaf
	Stillingia sylvatica var. linearifolia (Torr.) Müll. Arg. -- not accepted
	Stillingia sylvatica var. salicifolia Torr. -- not accepted
	Stipa burkartii Torres -- not accepted
	Stipa durifolia Parodi ex Torres -- not accepted
	Stipa occidentalis Thurb. ex Torr. -- not accepted
	Stipa scabrifolia Torres -- not accepted
	Stipa ventanicola Cabrera & Torres -- not accepted
	Streptanthus crassicaulis Torr. -- not accepted
	Strombocarpa odorata (Torr. & Frém.) A. Gray -- not accepted
	Strophostyles leiosperma (Torr. & A. Gray) Piper -- accepted -- slick-seed fuzzy-bean, slickseed fuzzybean, smoothseed wildbean
	Stylisma pickeringii (Torr. ex M.A. Curtis) A. Gray -- accepted -- Pickering's dawnflower, Pickering's morning-glory
	Stylisma pickeringii var. pickeringii (Torr. ex M.A. Curtis) A. Gray -- accepted -- Pickering's dawnflower
	Styphnolobium affine (Torr. & A. Gray) Walp. -- accepted -- Eve's necklacepod
	Styrax californicus Torr. -- not accepted
	Styrax officinalis var. californicus (Torr.) Rehder -- not accepted
	Styrax officinalis var. redivivus (Torr.) R.A. Howard -- not accepted -- drug snowbell
	Styrax platanifolius Engelm. ex Torr. -- accepted -- sycamoreleaf snowbell
	Styrax platanifolius ssp. platanifolius Engelm. ex Torr. -- accepted -- sycamoreleaf snowbell
	Styrax rediviva (Torr.) Wheeler -- not accepted -- drug snowbell
	Styrax redivivus (Torr.) L.C. Wheeler -- accepted -- California styrax, drug snowbell
	Suaeda moquinii (Torr.) Greene -- not accepted -- alkali seepweed, Mojave seablite, shrubby seepweed, Torrey's seepweed
	Suckleya suckleyana (Torr.) Rydb. -- accepted -- poison suckleya
	Suckleyi suckleyana (Torr.) Rydb. -- not accepted
	Sullivantia Torr. & A. Gray ex A. Gray -- accepted -- coolwort
	Sullivantia ohionis Torr. & A. Gray ex A. Gray -- not accepted
	Sullivantia sullivantii (Torr. & A. Gray) Britton -- accepted -- Sullivant's coolwort
	Swertia parryi (Torr.) Kuntze -- not accepted
	Symphyotrichum anomalum (Engelm. ex Torr. & A. Gray) G.L. Nesom -- accepted -- manyray aster
	Symphyotrichum boreale (Torr. & A. Gray) A. Löve & D. Löve -- accepted -- northern bog aster
	Symphyotrichum chapmanii (Torr. & A. Gray) Semple & Brouillet -- accepted -- savannah aster
	Symphyotrichum dumosum var. strictior (Torr. & A. Gray) G.L. Nesom -- accepted -- rice button aster
	Symphyotrichum dumosum var. subulifolium (Torr. & A. Gray) G.L. Nesom -- accepted -- rice button aster
	Symphyotrichum elliotii (Torr. & A. Gray) G.L. Nesom -- accepted -- Elliott's aster
	Symphyotrichum ericoides var. stricticaule (Torr. & A. Gray) G.L. Nesom -- not accepted -- white heath aster
	Symphyotrichum falcatum var. commutatum (Torr. & A. Gray) G.L. Nesom -- accepted -- white prairie aster
	Symphyotrichum novi-belgii var. elodes (Torr. & A. Gray) G.L. Nesom -- accepted -- New York aster
	Symphyotrichum spathulatum var. fremontii (Torr. & A. Gray) G.L. Nesom -- not accepted
	Taenidia (Torr. & A. Gray) Drude -- accepted
	Talinum brevifolium Torr. -- not accepted -- pygmy fameflower, pygmy talinum
	Talinum spinescens Torr. -- not accepted -- spiny fameflower
	Tanacetum capitatum (Nutt.) Torr. & A. Gray -- not accepted
	Tanacetum nuttallii Torr. & A. Gray -- not accepted
	Taraxia (Nutt. ex Torr. & A. Gray) Raim. -- accepted
	Taraxia breviflora (Torr. & A. Gray) Nutt. ex Small -- accepted -- fewflower evening primrose
	Taraxia tanacetifolia (Torr. & A. Gray) Piper -- accepted -- tansyleaf evening primrose
	Tauschia arguta (Torr. & A. Gray) J.F. Macbr. -- accepted -- southern umbrellawort
	Telesonix jamesii (Torr.) Raf. -- accepted -- James' saxifrage, James' telesonix
	Tephrosia flexuosa (Vail) Chapm. ex Torr. & A. Gray -- not accepted
	Tephrosia spicata (Walter) Torr. & A. Gray -- accepted -- spiked hoarypea
	Tephrosia virginiana var. glabra Nutt. ex Torr. & A. Gray -- not accepted
	Tephrosia virginiana var. holosericea (Nutt.) Torr. & A. Gray -- not accepted
	Tetradymia glabrata Torr. & A. Gray -- accepted -- littleleaf horsebrush
	Tetradymia nuttallii Torr. & A. Gray -- accepted -- Nuttall's horsebrush
	Tetradymia ramosissima Torr. -- not accepted
	Tetragonotheca ludoviciana (Torr. & A. Gray) A. Gray ex H.M. Hall -- accepted -- Louisiana nerveray
	Tetragonothela ludoviciana (Torr. & A. Gray) A. Gray ex H.M. Hall -- not accepted
	Tetramerium nervosum var. hispidum (Nees) Torr. -- not accepted
	Tetramerium platystegium Torr. -- not accepted
	Tetraneuris depressa (Torr. & A. Gray ex A. Gray) Greene -- not accepted -- flat four-nerve daisy
	Tetraneuris grandiflora (Torr. & A. Gray ex A. Gray) K.F. Parker -- not accepted -- graylocks four-nerve daisy
	Teucrium laciniatum Torr. -- accepted -- germander, lacy germander
	Thalictrum fendleri var. polycarpum Torr. -- not accepted -- Fendler's meadow-rue, manyfruit meadowrue
	Thalictrum occidentale var. megacarpum (Torr.) H. St. John -- not accepted
	Thalictrum polycarpum (Torr.) S. Watson -- accepted
	Thamnosma Torr. & Frém. -- accepted -- desert rue, desertrue
	Thamnosma montana Torr. & Frém. -- accepted -- Mohave desertrue, turpentine broom, turpentinebroom
	Thamnosma texana (A. Gray) Torr. -- accepted -- desert rue, Dutchman's britches, rue of the mountains
	Thelesperma gracile (Torr.) A. Gray -- not accepted
	Thelypodium brachycarpum Torr. -- accepted -- short-podded thelypody, shortpod thelypody
	Thelypodium sagittatum (Nutt. ex Torr. & A. Gray) Endl. ex Walp. -- accepted -- arrow thelypody, slender thelypody
	Thelypodium sagittatum ssp. sagittatum (Nutt. ex Torr. & A. Gray) Endl. ex Walp. -- accepted -- arrow thelypody
	Thermopsis fraxinifolia (Nutt. ex Torr. & A. Gray) M.A. Curtis -- accepted -- ashleaf goldenbanner
	Tidestromia suffruticosa (Torr.) Standl. -- accepted -- shrubby honeysweet, shrubby tidestromia
	Tidestromia suffruticosa var. suffruticosa (Torr.) Standl. -- accepted -- shrubby honeysweet
	Tillaea aquatica var. drummondii (Torr. & A. Gray) Jeps. -- not accepted
	Tillaea aquatica var. drummondii sensu (Torr. & A. Gray) Jeps. -- not accepted
	Tillaea drummondii Torr. & A. Gray -- not accepted
	Tillaeastrum drummondii (Torr. & A. Gray) Britton -- not accepted
	Tillaeastrum drummondii sensu (Torr. & A. Gray) Britton -- not accepted
	Tinantia anomala (Torr.) C.B. Clarke -- accepted -- false dayflower, widowstears
	Tiquilia brevifolia var. plicata Torr. -- not accepted
	Tiquilia greggii (Torr. & A. Gray) A.T. Richardson -- accepted -- Gregg's coldenia, plumed crinklemat
	Tiquilia hispidissima (Torr. & A. Gray) A.T. Richardson -- accepted -- hairy coldenia, hairy crinklemat
	Tiquilia plicata (Torr.) A.T. Richardson -- accepted -- fan-leaf crinklemat, fanleaf crinklemat, fanleaf tiquilia
	Tithymalopsis wrightii (Torr. & A. Gray) Small -- not accepted
	Tithymalus inundatus (Torr. ex Chapm.) Small -- not accepted
	Tolmiea Torr. & A. Gray -- accepted -- pig-a-back plant, youth on age
	Tolmiea menziesii (Pursh) Torr. & A. Gray -- accepted -- youth on age
	Tonestus pygmaeus (Torr. & A. Gray) A. Nelson -- accepted -- pygmy goldenweed
	Torreya californica Torr. -- accepted -- California nutmeg, California torreya
	Torreyochloa pallida (Torr.) G.L. Church -- accepted -- pale false mannagrass
	Torreyochloa pallida var. pallida (Torr.) G.L. Church -- accepted -- pale false mannagrass, pale manna grass
	Toxicodendron diversilobum (Torr. & A. Gray) Greene -- accepted -- Pacific poison oak
	Toxicodendron radicans ssp. diversilobum (Torr. & A. Gray) Thorne -- not accepted
	Toxicoscordion fremontii (Torr.) Rydb. -- accepted -- Fremont's deathcamas
	Tradescantia anomala Torr. -- not accepted
	Tradescantia brevifolia (Torr.) Rose -- accepted -- Trans-Pecos spiderwort, TransPecos spiderwort
	Tradescantia leiandra Torr. -- accepted -- canyon spiderwort
	Tradescantia leiandra var. brevifolia Torr. -- not accepted
	Tradescantia leiandra var. leiandra Torr. -- not accepted -- canyon spiderwort
	Tradescantia micrantha Torr. -- not accepted
	Tragia laciniata (Torr.) Müll. Arg. -- accepted -- Sonoita noseburn
	Tragia leptophylla (Torr.) I.M. Johnst. -- not accepted -- fineleaf noseburn
	Tragia nepetifolia var. leptophylla (Torr.) Shinners -- not accepted
	Tragia nepetifolia var. ramosa (Torr.) Müll. Arg. -- not accepted
	Tragia ramosa Torr. -- accepted -- branched noseburn, branched tragia, catnip noseburn, noseburn
	Tragia ramosa var. leptophylla Torr. -- not accepted
	Tricardia Torr. ex S. Watson -- accepted
	Tricardia watsonii Torr. ex S. Watson -- accepted -- threehearts
	Trichocoronis wrightii (Torr. & A. Gray) A. Gray -- accepted -- limestone bugheal, river bugheal
	Trichocoronis wrightii var. wrightii (Torr. & A. Gray) A. Gray -- not accepted
	Trichodium montanum Torr. -- not accepted
	Trichophorum palustre var. calvum (Torr.) House -- not accepted
	Tricuspis mutica Torr. -- not accepted
	Tricuspis pulchella (Kunth) Torr. -- not accepted
	Tricuspis sesleroides Torr. -- not accepted
	Tridens muticus (Torr.) Nash -- accepted -- slim tridens
	Tridens muticus f. muticus (Torr.) Nash -- accepted
	Tridens muticus var. muticus (Torr.) Nash -- accepted -- rough tridens, slim tridens
	Trientalis europaea var. latifolia (Hook.) Torr. -- not accepted
	Trifolium albopurpureum Torr. & A. Gray -- accepted -- rancheria clover
	Trifolium amphianthum Torr. & A. Gray -- not accepted
	Trifolium amplectens Torr. & A. Gray -- not accepted
	Trifolium barbigerum Torr. -- accepted -- bearded clover
	Trifolium barbigerum var. barbigerum Torr. -- accepted -- bearded clover
	Trifolium dasyphyllum Torr. & A. Gray -- accepted -- alpine clover, Uinta clover, whiproot clover
	Trifolium dasyphyllum ssp. dasyphyllum Torr. & A. Gray -- accepted -- alpine clover
	Trifolium depauperatum var. amplectens (Torr. & A. Gray) S. Watson -- accepted -- balloon sack clover
	Trifolium gracilentum Torr. & A. Gray -- accepted -- pin-point clover, pinpoint clover
	Trifolium gracilentum var. gracilentum Torr. & A. Gray -- accepted -- pinpoint clover
	Trifolium heterodon Torr. & A. Gray -- not accepted
	Trifolium involucratum var. heterodon (Torr. & A. Gray) S. Watson -- not accepted
	Trifolium macraei var. albopurpureum (Torr. & A. Gray) Greene -- not accepted
	Trifolium nanum Torr. -- accepted -- dwarf clover
	Trillium angustipetalum (Torr.) J.D. Freeman -- accepted -- narrowpetal wakerobin
	Trillium chloropetalum (Torr.) Howell -- accepted -- giant wakerobin
	Trillium chloropetalum var. angustipetalum (Torr.) Munz -- not accepted
	Trillium chloropetalum var. chloropetalum (Torr.) Howell -- accepted -- giant wakerobin
	Trillium erectum var. flavum Torr. -- not accepted
	Trillium sessile var. angustipetalum Torr. -- not accepted
	Trillium sessile var. chloropetalum Torr. -- not accepted
	Triodia mutica (Torr.) Scribn. -- not accepted
	Triodia pallida (Torr.) Spreng. -- not accepted
	Tripterocalyx (Torr.) Hook. -- accepted -- sandpuffs
	Tripterocalyx micranthus (Torr.) Hook. -- accepted -- sandpuffs, small-flower sandpuffs, smallflower sand verbena
	Trisetum kochianum Hern. Torres -- not accepted
	Trisetum palustre (Michx.) Torr. -- not accepted
	Trisetum purpurascens Torr. -- not accepted
	Troximon glaucum var. dasycephalum Torr. & A. Gray -- not accepted
	Tylosema (Schweinf.) Torre & Hillc. -- accepted
	Tylosema fassoglense (Kotschy ex Schweinf.) Torre & Hillc. -- accepted
	Uniola stricta Torr. -- not accepted
	Urachne canadensis (Poir.) Torr. -- not accepted
	Urachne canadensis Torr. & A. Gray ex Trin. & Rupr. -- not accepted
	Uralepis pallida (Torr.) Kunth -- not accepted
	Urochloa fasciculata var. reticulata (Torr.) R.D. Webster -- not accepted
	Urochloa fusca var. reticulata (Torr.) B.F. Hansen & Wunderlin -- not accepted
	Utricularia striata Leconte ex Torr. -- accepted -- striped bladderwort
	Vaccinium membranaceum Douglas ex Torr. -- accepted -- mountain bilberry, thinleaf huckleberry
	Vaccinium vacillans Kalm ex Torr. -- not accepted
	Vachellia schottii (Torr.) Seigler & Ebinger -- accepted -- Schott's wattle
	Valeriana ciliata Torr. & A. Gray -- not accepted
	Valeriana edulis Nutt. ex Torr. & A. Gray -- accepted -- edible valerian, tobacco root, tobaccoroot
	Valeriana edulis ssp. ciliata (Torr. & A. Gray) F.G. Mey. -- not accepted
	Valeriana edulis var. ciliata (Torr. & A. Gray) Cronquist -- accepted -- tobacco root
	Valeriana edulis var. edulis Nutt. ex Torr. & A. Gray -- accepted -- tobacco root
	Valeriana sitchensis ssp. uliginosa (Torr. & A. Gray) F.G. Mey. -- accepted -- marsh valerian, valériane de Sitka sous-espèce des tourbières
	Valeriana sitchensis var. uliginosa (Torr. & A. Gray) B. Boivin -- not accepted
	Valeriana uliginosa (Torr. & A. Gray) Rydb. -- not accepted -- mountain valerian
	Valerianella longiflora (Torr. & A. Gray) Walp. -- accepted -- longtube cornsalad, tubeflower cornsalad
	Valerianella nuttallii (Torr. & A. Gray) Walp. -- accepted -- Nuttall's cornsalad
	Valerianella woodsiana (Torr. & A. Gray) Walp. -- not accepted -- Woods' cornsalad
	Vallisneria spiralis var. americana (Michx.) Torr. -- not accepted
	Vallisneria spiralis var. asiatica (Michx.) Torr. -- not accepted
	Vanquelinia californica (Torr.) Sarg. -- not accepted
	Vauquelinia californica (Torr.) Sarg. -- accepted -- Arizona rosewood
	Vauquelinia californica ssp. californica (Torr.) Sarg. -- accepted -- Arizona rosewood, California rosewood
	Vernonia baldwinii Torr. -- accepted -- Baldwin's ironweed, interior ironweed, ironweed, western ironweed
	Vernonia baldwinii ssp. baldwinii Torr. -- not accepted -- Baldwin's ironweed
	Vernonia gigantea ssp. ovalifolia (Torr. & A. Gray) Urbatsch -- not accepted -- giant ironweed
	Vernonia marginata (Torr.) Raf. -- accepted -- ironplant, plains ironweed
	Vernonia ovalifolia Torr. & A. Gray -- not accepted
	Vesicaria grandiflora var. pallida Torr. & A. Gray -- not accepted
	Viburnum cassinoides var. angustifolium (Torr. & A. Gray) Shinners -- not accepted
	Viburnum dentatum var. scabrellum Torr. & A. Gray -- not accepted -- southern arrowwood
	Viburnum nudum var. angustifolium Torr. & A. Gray -- not accepted
	Viburnum nudum var. cassinoides (L.) Torr. & A. Gray -- accepted -- possumhaw, withe-rod
	Viburnum pauciflorum Bach. Pyl. ex Torr. & A. Gray -- not accepted
	Viburnum prunifolium var. ferrugineum Torr. & A. Gray -- not accepted
	Viburnum scabrellum (Torr. & A. Gray) Chapm. -- not accepted
	Vicia exigua var. californica Torr. -- not accepted
	Vicia leavenworthii Nutt. ex Torr. & A. Gray -- not accepted
	Vicia ludoviciana Nutt. ex Torr. & A. Gray -- accepted -- deerpea vetch, Louisiana vetch, slim vetch
	Vicia ludoviciana ssp. leavenworthii (Nutt. ex Torr. & A. Gray) Lassetter & C.R. Gunn -- not accepted -- Leavenworth's vetch
	Vicia ludoviciana ssp. ludoviciana Nutt. ex Torr. & A. Gray -- not accepted -- Louisiana vetch, slim vetch
	Vicia ludoviciana var. leavenworthii (Nutt. ex Torr. & A. Gray) Broich -- accepted -- Leavenworth's vetch
	Vicia ludoviciana var. ludoviciana Nutt. ex Torr. & A. Gray -- accepted -- Louisiana vetch
	Vicia ludoviciana var. texana (Torr. & A. Gray) Shinners -- not accepted
	Vicia micrantha Nutt. ex Torr. & A. Gray -- not accepted
	Vicia sparsifolia Nutt. ex Torr. & A. Gray -- not accepted
	Vicia texana (Torr. & A. Gray) Small -- not accepted
	Vilfa airoides (Torr.) Trin. ex Steud. -- not accepted
	Vilfa cryptandra (Torr.) Trin. -- not accepted
	Vilfa cuspidata Torr. ex Hook. -- not accepted
	Vilfa depauperata Torr. ex Hook. -- not accepted
	Vilfa serotina Torr. ex A. Gray -- not accepted
	Vilfa tricholepis Torr. -- not accepted
	Vilfa utilis Torr. -- not accepted
	Vilfa vaginiflora Torr. ex A. Gray -- not accepted
	Viola beckwithii Torr. & A. Gray -- accepted -- Beckwith's violet
	Viola beckwithii ssp. beckwithii Torr. & A. Gray -- not accepted -- Beckwith's violet
	Viola canadensis var. corymbosa Nutt. ex Torr. & A. Gray -- not accepted -- Canadian white violet
	Viola ocellata Torr. & A. Gray -- accepted -- pinto violet
	Viola pedunculata Torr. & A. Gray -- accepted -- Johnny-jump-up
	Viola pedunculata ssp. pedunculata Torr. & A. Gray -- accepted -- Johnny-jump-up
	Viola primulifolia var. acuta (Bigelow) Torr. & A. Gray -- not accepted
	Viola pubescens var. scabriuscula Torr. & A. Gray -- accepted -- downy yellow violet
	Viola sagittata var. ovata (Nutt.) Torr. & A. Gray -- accepted -- arrowleaf violet
	Viola sheltonii Torr. -- accepted -- Shelton's violet
	Viola shletonii Torr. -- not accepted
	Viorna baldwinii (Torr. & A. Gray) Small -- not accepted
	Viorna pitcheri (Torr. & A. Gray) Britton -- not accepted
	Waldsteinia lobata (Baldwin) Torr. & A. Gray -- accepted -- piedmont barren strawberry
	Waldstenia lobata (Baldwin) Torr. & A. Gray -- not accepted
	Washingtonia longistylis (Torr.) Britton -- not accepted
	Whipplea Torr. -- accepted
	Whipplea modesta Torr. -- accepted -- common whipplea
	Windsoria pallida Torr. -- not accepted
	Wisteria frutescens var. macrostachya Torr. & A. Gray -- not accepted
	Wisteria macrostachya (Torr. & A. Gray) Nutt. ex B.L. Rob. & Fernald -- not accepted
	Woodsia obtusa (Spreng.) Torr. -- accepted -- blunt-lobe woodsia, bluntlobe cliff fern, woodsie à lobes arrondis
	Woodsia obtusa ssp. obtusa (Spreng.) Torr. -- accepted -- bluntlobe cliff fern
	Wyethia ovata Torr. & A. Gray ex Torr. -- not accepted -- southern mule-ears
	Xamesike depressa (Torr. ex Spreng.) Raf. -- not accepted
	Xanthisma texanum ssp. drummondii (Torr. & A. Gray) Semple -- not accepted -- Drummond's sleepydaisy
	Xanthisma texanum var. drummondii (Torr. & A. Gray) A. Gray -- accepted -- Drummond's sleepydaisy
	Xanthium strumarium var. canadense (Mill.) Torr. & A. Gray -- not accepted -- Canada cocklebur, Canada cockleburr, cocklebur, common cocklebur, rough cocklebur, rough cockleburr
	Xylorhiza tortifolia (Torr. & A. Gray) Greene -- accepted -- Mojave aster, Mojave woodyaster
	Xylorhiza tortifolia var. tortifolia (Torr. & A. Gray) Greene -- accepted -- Mojave aster, Mojave woodyaster
	Yeatesia platystegia (Torr.) Hilsenb. -- accepted -- Montell bractspike
	Yucca baccata Torr. -- accepted -- banana yucca, datil yucca, Izote de dátil
	Yucca baccata var. baccata Torr. -- accepted -- banana yucca
	Yucca baccata var. macrocarpa Torr. -- not accepted
	Yucca brevifolia Schott ex Torr. (pro. syn.) -- not accepted -- Joshua tree
	Yucca macrocarpa (Torr.) Coville -- not accepted
	Yucca puberula Torr. -- not accepted
	Yucca whipplei Torr. -- not accepted -- chaparral yucca, Izote de hoz
	Yucca whipplei var. whipplei Torr. -- not accepted -- chaparral yucca, whipple yucca
	Zamia inermis Vovides, J.D. Rees & Vázq. Torres -- accepted
	Zamia polymorpha D.W. Stev., A. Moretti & Vázq. Torres -- not accepted
	Zamia purpurea Vovides, J.D. Rees & Vázq. Torres -- accepted
	Zapoteca formosa var. schottii (Torr. ex S. Watson) H.M. Hern. -- accepted -- Schott's stickpea
	Zea mays var. precox Torr. -- not accepted
	Zeltnera beyrichii (Torr. & A. Gray) G. Mans. -- accepted -- mountain pink, quinineweed, rock centaury
	Zigadenus fremontii (Torr.) Torr. ex S. Watson -- not accepted -- Fremont's deathcamas
	Zigadenus fremontii var. fremontii (Torr.) Torr. ex S. Watson -- not accepted -- Fremont's deathcamas
	Ziziphus obtusifolia (Hook. ex Torr. & A. Gray) A. Gray -- accepted -- graythorn, Lote bush, lotebush
	Ziziphus obtusifolia var. obtusifolia (Hook. ex Torr. & A. Gray) A. Gray -- accepted -- graythorn, lotebush
	Ziziphus parryi Torr. -- accepted -- Parry's jujube
	Ziziphus parryi var. parryi Torr. -- not accepted -- lotebush

Kingdom Bacteria
	Lactobacillus curvatus melibiosus Torriani et al., 1996 -- invalid
	Lactobacillus sakei carnosus Torriani et al., 1996 -- valid
	Lactococcus lactis hordniae (ex Latorre-Guzman et al., 1977) Schleifer et al., 1986 -- valid
	Propionibacterium lymphophilum (Torrey, 1916) Johnson and Cummins, 1972 -- invalid
	Propionimicrobium lymphophilum (Torrey, 1916) Stackebrandt et al., 2002 -- valid

Kingdom Archaea
	Haloarcula Torreblanca et al., 1986 -- valid
	Haloarcula vallismortis (Gonzalez et al., 1979) Torreblanca et al., 1986 -- valid
	Haloferax Torreblanca et al., 1986 -- valid
	Haloferax mediterranei (Rodriguez-Valera et al., 1983) Torreblanca et al., 1987 -- valid
	Haloferax volcanii (Mullakhanbhai and Larsen, 1975) Torreblanca et al., 1986 -- valid