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Source: Liliaceae s.l. of North America Update, database (version 2010)

ITIS records citing this source
 
 Kingdom Plantae
  Abama americana (Ker Gawl.) Morong -- not accepted
  Abama montana Small -- not accepted
  Agapanthus L'Hér. -- accepted -- agapanthus
  Agapanthus africanus (L.) Hoffmanns. -- accepted -- lily of the Nile
  Agapanthus orientalis F.M. Leight. -- not accepted
  Agapanthus praecox Willd. -- accepted -- African-lily
  Agapanthus praecox ssp. orientalis (F.M. Leight.) F.M. Leight. -- not accepted
  Agapanthus umbellatus L'Hér. -- not accepted
  Agave L. -- accepted -- agave, agave species
  Agave americana L. -- accepted -- American agave, American century plant, centuryplant, Maguey americano
  Agave americana ssp. americana L. -- accepted -- American century plant
  Agave americana ssp. protamericana Gentry -- accepted -- American century plant
  Agave americana var. americana L. -- accepted -- American century plant
  Agave americana var. expansa (Jacobi) Gentry -- accepted -- American century plant
  Agave americana var. marginata Trel. -- not accepted
  Agave americana var. mediopicta Trel. -- not accepted
  Agave americana var. striata Trel. -- not accepted
  Agave angustifolia Haw. -- accepted -- century plant, Maguey espadín
  Agave arizonica Gentry & J.H. Weber -- not accepted -- Arizona agave, Arizona century plant
  Agave asperrima Jacobi -- accepted -- Maguey áspero, rough century plant
  Agave asperrima var. asperrima Jacobi -- accepted -- rough century plant
  Agave atrovirens Karw. ex Salm-Dyck -- accepted -- maguey, Maguey de montańa
  Agave cantala Roxb. -- accepted -- cantala, Maguey de la India
  Agave chisosensis C.H. Mull. -- not accepted
  Agave chrysantha Peebles -- accepted -- golden flowered agave, goldenflower century plant
  Agave consociata Trel. -- not accepted
  Agave cupreata Trel. & A. Berger -- accepted
  Agave decipiens Baker -- accepted -- false sisal
  Agave delamateri W.C. Hodgs. & L. Slauson -- accepted -- Tonto Basin century plant
  Agave deserti Engelm. -- accepted -- desert agave, Maguey de Desierto
  Agave deserti ssp. simplex Gentry -- not accepted -- desert agave
  Agave deserti var. deserti Engelm. -- accepted -- desert agave
  Agave deserti var. simplex (Gentry) W.C. Hodgs. & Reveal -- accepted -- desert agave
  Agave desmettiana Jacobi -- accepted -- dwarf century plant, Maguey semati
  Agave eggersiana Trel. -- accepted -- Eggers' century plant
  Agave fourcroydes Lem. -- accepted -- henequen, Maguey henequén
  Agave glomeruliflora (Engelm.) A. Berger -- not accepted -- Chisos agave, Chisos Mountain century plant, Maguey del Bravo
  Agave gracilipes Trel. -- accepted -- Maguey de pastizal, slimfoot century plant
  Agave havardiana Trel. -- accepted -- Havard's century plant, Maguey de Havard
  Agave heteracantha Zucc. -- not accepted
  Agave huachucensis Baker -- not accepted
  Agave kaibabensis McKelvey -- not accepted
  Agave lata Shinners -- not accepted
  Agave lecheguilla Torr. -- accepted -- lecheguilla
  Agave lophantha Schiede -- not accepted -- Maguey mezortillo, thorncrest century plant
  Agave lophantha var. poselgeri (Salm-Dyck) A. Berger -- not accepted
  Agave maculata Engelm. ex Torr., non Regel -- not accepted
  Agave maculosa Hook. -- not accepted
  Agave maculosa var. minor Jacobi -- not accepted
  Agave mckelveyana Gentry -- accepted -- McKelvey's agave, McKelvey's century plant
  Agave missionum Trel. -- accepted -- corita
  Agave murpheyi F. Gibson -- accepted -- Maguey bandeado, Murphey agave, Murphey's century plant
  Agave neglecta Small -- accepted -- wild century plant
  Agave neomexicana Wooton & Standl. -- not accepted -- Maguey de Nuevo México
  Agave palmeri Engelm. -- accepted -- Maguey de tlalcoyote, Palmer agave, Palmer century plant, Palmer's century plant
  Agave palmeri var. chrysantha (Peebles) Little -- not accepted
  Agave parryi Engelm. -- accepted -- Mezcal yapavai, Parry agave, Parry's agave
  Agave parryi ssp. neomexicana (Wooton & Standl.) B. Ullrich -- accepted -- New Mexico agave, Parry's agave
  Agave parryi ssp. parryi Engelm. -- accepted -- Huachuca agave, Parry's agave, rough agave
  Agave parryi var. couesii (Engelm. ex Trel.) Kearney & Peebles -- not accepted
  Agave parryi var. huachucensis (Baker) Little -- 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
  Agave phillipsiana W.C. Hodgs. -- accepted -- Grand Canyon century plant
  Agave portoricensis Trel. -- not accepted -- Puerto Rico century plant
  Agave rigida var. sisalana (Perrine) Engelm. -- not accepted
  Agave scabra Salm-Dyck -- not accepted
  Agave schottii Engelm. -- accepted -- Maguey puercoespín, Schott agave, Schott's century plant
  Agave schottii var. schottii Engelm. -- accepted -- Schott agave, Schott's century plant
  Agave schottii var. treleasei (Toumey) Kearney & Peebles -- accepted -- Schott agave, Trelease's century plant
  Agave shawii Engelm. -- accepted -- coastal agave, Maguey primavera, Shaw's agave
  Agave shawii var. shawii Engelm. -- accepted -- coastal agave
  Agave sisalana Perrine -- accepted -- Maguey de Sisal, sisal, sisal hemp
  Agave tequilana F.A.C. Weber -- accepted -- Mezcal azul tequilero, tequila agave
  Agave tigrina (Engelm.) Cory -- not accepted
  Agave toumeyana Trel. -- accepted -- Toumey agave, Toumey's century plant
  Agave toumeyana ssp. bella (Breitung) Gentry -- not accepted
  Agave toumeyana var. bella Breitung -- accepted -- Toumey agave, Toumey's century plant
  Agave toumeyana var. toumeyana Trel. -- accepted -- Toumey agave, Toumey's century plant
  Agave univittata Haw. -- accepted -- thorncrest century plant
  Agave utahensis Engelm. -- accepted -- Utah agave
  Agave utahensis ssp. kaibabensis (McKelvey) Gentry -- not accepted
  Agave utahensis var. eborispina (Hester) Breitung -- accepted -- Utah agave
  Agave utahensis var. kaibabensis (McKelvey) Breitung -- accepted -- Kaibab agave
  Agave utahensis var. nevadensis Engelm. ex Greenm. & Roush -- accepted -- Nevada agave
  Agave utahensis var. utahensis Engelm. -- accepted -- Utah agave
  Agave variegata Jacobi -- not accepted
  Agave virginica L. -- not accepted
  Agave weberi F. Cels ex J. Poiss. -- accepted -- Maguey liso, Weber's century plant
  Agave X ajoensis W.C. Hodgs. -- accepted
  Agave X arizonica Gentry & J.H. Weber (pro. sp.) -- accepted -- Arizona century plant
  Agave X glomeruliflora (Engelm.) A. Berger -- accepted -- Chisos Mountain century plant
  Agave xylonacantha Salm-Dyck -- accepted -- century plant, Maguey diente de tiburón
  Aletris L. -- accepted -- colicroot
  Aletris aurea Walter -- accepted -- golden colicroot
  Aletris bracteata Northr. -- accepted -- bracted colicroot
  Aletris farinosa L. -- accepted -- white colicroot
  Aletris japonica Houtt. -- not accepted
  Aletris japonica Thunb. -- not accepted
  Aletris lutea Small -- accepted -- yellow colicroot
  Aletris obovata Nash -- accepted -- southern colicroot
  Aletris X tottenii E.T. Browne -- accepted -- Totten's colicroot
  Allibertia intermedia Marion ex Baker -- not accepted
  Allium L. -- accepted -- oignon, onion, wild onion
  Allium aaseae Ownbey -- accepted -- Aase's onion, South Idaho onion
  Allium abramsii (Ownbey & Aase) McNeal -- accepted -- Abrams' allium
  Allium acetabulum (Raf.) Shinners -- not accepted
  Allium acuminatum Hook. -- accepted -- taper-tip onion, tapertip onion
  Allium acuminatum var. cuspidatum Fernald -- not accepted
  Allium allegheniense Small -- not accepted -- Allegheny onion
  Allium ambiguum M.E. Jones -- not accepted
  Allium ampeloprasum L. -- accepted -- broadleaf wild leek
  Allium ampeloprasum var. ampeloprasum L. -- not accepted -- broadleaf wild leek
  Allium ampeloprasum var. atroviolaceum (Boiss.) Regel -- not accepted -- broadleaf wild leek
  Allium ampeloprasum var. porrum (L.) J. Gay -- not accepted
  Allium amplectens Torr. -- accepted -- narrowleaf onion
  Allium anceps Kellogg -- accepted -- Kellogg's onion, twinleaf onion
  Allium arenicola Small -- not accepted
  Allium arenicola Osterh., non Small -- not accepted
  Allium aridum Rydb. -- not accepted
  Allium ascalonicum L. -- accepted -- wild onion
  Allium atrorubens S. Watson -- accepted -- dark red onion, darkred onion, red onion
  Allium atrorubens ssp. inyonis (M.E. Jones) Traub -- not accepted
  Allium atrorubens var. atrorubens S. Watson -- accepted -- darkred onion
  Allium atrorubens var. cristatum (S. Watson) McNeal -- accepted -- darkred onion, Wild onion
  Allium atrorubens var. inyonis (M.E. Jones) Ownbey & Aase -- not accepted
  Allium atroviolaceum Boiss. -- accepted -- broadleaf wild leek
  Allium attenuifolium Kellogg -- not accepted
  Allium austinae M.E. Jones -- not accepted
  Allium bakeri Regel -- not accepted
  Allium bidwelliae S. Watson -- not accepted
  Allium bigelovii S. Watson -- accepted -- Bigelow onion, Bigelow's onion
  Allium bisceptrum S. Watson -- accepted -- aspen onion, twincrest onion
  Allium bisceptrum var. bisceptrum S. Watson -- not accepted -- twincrest onion
  Allium bisceptrum var. palmeri (S. Watson) Cronquist -- not accepted -- aspen onion
  Allium bivalve (L.) Kuntze -- not accepted
  Allium bolanderi S. Watson -- accepted -- Bolander's onion
  Allium bolanderi var. bolanderi S. Watson -- accepted -- Bolander's onion
  Allium bolanderi var. mirabile (L.F. Hend.) McNeal -- accepted -- Bolander's onion
  Allium bolanderi var. stenanthum (Drew) Jeps. -- not accepted -- Bolander's onion
  Allium brandegeei S. Watson -- accepted -- Brandegee's onion
  Allium brevistylum S. Watson -- accepted -- shortstyle onion
  Allium breweri S. Watson -- not accepted
  Allium burdickii (Hanes) A.G. Jones -- not accepted -- narrow-leaf wild leek, narrowleaf wild leek
  Allium burlewii Davidson -- accepted -- Burlew's onion
  Allium campanulatum S. Watson -- accepted -- dusky onion, Sierra onion
  Allium campanulatum var. bidwelliae (S. Watson) Jeps. -- not accepted
  Allium canadense L. -- accepted -- ail du Canada, Canada garlic, meadow garlic, meadow onion, wild onion
  Allium canadense ssp. ecristatum (M.E. Jones) Traub & Ownbey -- not accepted
  Allium canadense ssp. hyacinthoides (Bush) Traub & Ownbey -- not accepted
  Allium canadense ssp. lavendulare (Bates) Traub & Ownbey -- not accepted
  Allium canadense ssp. mobilense (Regel) Traub & Ownbey -- not accepted
  Allium canadense var. canadense L. -- accepted -- Canada garlic, meadow garlic
  Allium canadense var. ecristatum (M.E. Jones) Ownbey -- accepted -- meadow garlic
  Allium canadense var. fraseri Ownbey -- accepted -- Fraser meadow garlic
  Allium canadense var. hyacinthoides (Bush) Ownbey -- accepted -- hyacinth meadow garlic
  Allium canadense var. lavendulare (Bates) Ownbey & Aase -- accepted -- meadow garlic
  Allium canadense var. mobilense (Regel) Ownbey -- accepted -- meadow garlic
  Allium canadense var. ovoideum Farw. -- not accepted
  Allium canadense var. robustum Farw. -- not accepted
  Allium carinatum L. -- accepted -- keeled garlic
  Allium cascadense M. Peck -- not accepted
  Allium cepa L. -- accepted -- garden onion
  Allium cepa var. aggregatum G. Don -- not accepted
  Allium cepa var. bulbiferum Regel -- not accepted
  Allium cepa var. cepa L. -- not accepted -- garden onion
  Allium cepa var. multiplicans L.H. Bailey -- not accepted
  Allium cepa var. proliferum (Moench) Regel -- not accepted
  Allium cepa var. solaninum Alef. -- not accepted -- garden onion
  Allium cepa var. viviparum (Metz) Mansf. -- not accepted -- garden onion
  Allium cernuum Roth -- accepted -- nodding onion
  Allium cernuum var. cernuum Roth -- not accepted -- nodding onion
  Allium cernuum var. neomexicanum (Rydb.) J.F. Macbr. -- not accepted -- New Mexican nodding onion
  Allium cernuum var. obtusum Cockerell ex J.F. Macbr. -- not accepted -- nodding onion
  Allium chinense G. Don -- accepted -- rakkyo
  Allium collinum Douglas ex S. Watson -- not accepted
  Allium columbianum (Ownbey & Mingrone) P.M. Peterson, Annable & Rieseberg -- accepted -- Columbian onion
  Allium constrictum (Ownbey & Mingrone) P.M. Peterson, Annable & Rieseberg -- accepted -- Grand Coulee onion
  Allium continuum Small -- not accepted
  Allium coryi M.E. Jones -- accepted -- yellowflower onion
  Allium cratericola Eastw. -- accepted -- Cascade onion
  Allium crenulatum Wiegand -- accepted -- Olympic onion
  Allium crispum Greene -- accepted -- crinkled onion
  Allium cristatum S. Watson -- not accepted
  Allium croceum Torr. -- not accepted
  Allium cusickii S. Watson -- not accepted
  Allium cuthbertii Small -- accepted -- striped garlic
  Allium davisiae M.E. Jones -- not accepted
  Allium denticulatum (Ownbey & Aase) McNeal -- accepted -- toothed onion
  Allium diabolense (Ownbey & Aase) McNeal -- accepted -- serpentine onion
  Allium dichlamydeum Greene -- accepted -- coastal onion
  Allium dictuon H. St. John -- accepted -- Blue Mountain onion
  Allium dictyotum Greene -- not accepted
  Allium diehlii (M.E. Jones) M.E. Jones -- not accepted
  Allium douglasii Hook. -- accepted -- Douglas' onion
  Allium douglasii var. columbianum Ownbey & Mingrone -- not accepted
  Allium douglasii var. constrictum Ownbey & Mingrone -- not accepted
  Allium douglasii var. nevii (S. Watson) Ownbey & Mingrone -- not accepted
  Allium drummondii Regel -- accepted -- drummond onion, Drummond's onion
  Allium elmendorfii M.E. Jones ex Ownbey -- accepted -- Elmendorf's onion
  Allium equicaeleste H. St. John -- not accepted
  Allium falcifolium Hook. & Arn. -- accepted -- scytheleaf onion
  Allium falcifolium var. demissum Jeps. -- not accepted
  Allium fibrillum M.E. Jones -- accepted -- Cuddy Mountain onion
  Allium fibrosum Rydb., non Regel -- not accepted
  Allium fimbriatum S. Watson -- accepted -- fringed onion
  Allium fimbriatum ssp. mohavense (Tidestr.) Traub & Ownbey -- not accepted
  Allium fimbriatum ssp. parryi (S. Watson) Traub & Ownbey -- not accepted
  Allium fimbriatum ssp. purdyi (Eastw.) Traub & Ownbey -- not accepted
  Allium fimbriatum var. abramsii Ownbey & Aase -- not accepted
  Allium fimbriatum var. denticulatum Ownbey & Aase -- not accepted
  Allium fimbriatum var. diabolense Ownbey & Aase -- not accepted
  Allium fimbriatum var. fimbriatum S. Watson -- accepted -- fringed onion
  Allium fimbriatum var. mohavense (Tidestr.) Jeps. -- accepted -- Mojave fringed onion
  Allium fimbriatum var. munzii Ownbey & Aase ex Traub -- not accepted
  Allium fimbriatum var. parryi (S. Watson) Ownbey & Aase -- not accepted
  Allium fimbriatum var. purdyi (Eastw.) Ownbey & Aase -- accepted -- Purdy's fringed onion, Purdy's onion
  Allium fimbriatum var. sharsmithiae Ownbey & Aase -- not accepted
  Allium fistulosum L. -- accepted -- welsh onion
  Allium fragile A. Nelson -- not accepted
  Allium fragrans Vent. -- not accepted
  Allium fraseri (Ownbey) Shinners -- not accepted
  Allium geyeri S. Watson -- accepted -- Geyer onion, Geyer's onion
  Allium geyeri ssp. tenerum (M.E. Jones) Traub & Ownbey -- not accepted
  Allium geyeri var. chatterleyi S.L. Welsh -- accepted -- Geyer's onion
  Allium geyeri var. geyeri S. Watson -- accepted -- Geyer onion, Geyer's onion
  Allium geyeri var. graniferum L.F. Hend. -- not accepted
  Allium geyeri var. tenerum M.E. Jones -- accepted -- bulbil onion
  Allium geyeri var. textile (A. Nelson & J.F. Macbr.) B. Boivin -- not accepted
  Allium glandulosum Link & Otto -- accepted -- gland onion
  Allium gooddingii Ownbey -- accepted -- Goodding's onion
  Allium haematochiton S. Watson -- accepted -- redskin onion
  Allium helleri Small -- not accepted
  Allium hickmanii Eastw. -- accepted -- Hickman's onion
  Allium hoffmanii Ownbey -- accepted -- beegum onion
  Allium howellii Eastw. -- accepted -- Howell's onion
  Allium howellii ssp. sanbenitense (Traub) Traub & Ownbey -- not accepted
  Allium howellii var. clokeyi Ownbey & Aase -- accepted -- Clokey's onion
  Allium howellii var. howellii Eastw. -- accepted -- Howell's onion
  Allium howellii var. sanbenitense (Traub) Ownbey & Aase -- accepted -- San Benito onion
  Allium hyacinthoides Bush -- not accepted
  Allium hyalinum Curran -- accepted -- glassy onion
  Allium incisum A. Nelson & J.F. Macbr. -- not accepted
  Allium inodorum Aiton -- not accepted
  Allium inodorum auct. non Aiton -- not accepted
  Allium intactum Jeps. -- not accepted
  Allium inyonis M.E. Jones -- not accepted
  Allium jepsonii (Ownbey & Aase) S. Denison & McNeal -- accepted -- Jepson's onion
  Allium johnstonii M.E. Jones ex Jeps. -- not accepted
  Allium kunthii G. Don -- accepted -- Kunth's onion
  Allium lacunosum S. Watson -- accepted -- pitted onion
  Allium lacunosum var. davisiae (M.E. Jones) McNeal & Ownbey -- accepted -- pitted onion
  Allium lacunosum var. kernensis McNeal & Ownbey -- accepted -- Kern's pitted onion
  Allium lacunosum var. lacunosum S. Watson -- accepted -- pitted onion
  Allium lacunosum var. micranthum Eastw. -- accepted -- pitted onion
  Allium lavendulare Bates -- not accepted
  Allium lavendulare var. fraseri (Ownbey) Shinners -- not accepted
  Allium lemmonii S. Watson -- accepted -- Lemmon onion, Lemmon's onion
  Allium macropetalum Rydb. -- accepted -- largeflower onion, largeflower wild onion
  Allium macrum S. Watson -- accepted -- rock onion
  Allium madidum S. Watson -- accepted -- swamp onion
  Allium marvinii Davidson -- not accepted
  Allium membranaceum Ownbey -- accepted -- papery onion
  Allium microscordion Small -- not accepted
  Allium minimum M.E. Jones -- not accepted
  Allium mirabile L.F. Hend. -- not accepted
  Allium miser Piper -- not accepted
  Allium mobilense Regel -- not accepted
  Allium modocense Jeps. -- not accepted
  Allium mohavense Tidestr. -- not accepted
  Allium monospermum Jeps. -- not accepted
  Allium monticola Davidson -- accepted -- San Bernardino Mountain onion
  Allium monticola var. keckii (Munz) Ownbey & Aase -- not accepted
  Allium multibulbosum Jacq. -- not accepted
  Allium munzii (Ownbey & Aase ex Traub) McNeal -- accepted -- Munz's onion
  Allium mutabile Michx. -- not accepted
  Allium natans Rydb. -- not accepted
  Allium neapolitanum Cirillo -- accepted -- white garlic
  Allium neomexicanum Rydb. -- not accepted
  Allium neopolitanum Cirillo -- not accepted -- daffodil garlic
  Allium nevadense S. Watson -- accepted -- Nevada onion
  Allium nevadense var. cristatum (S. Watson) Ownbey -- not accepted
  Allium nevii S. Watson -- accepted -- Nevius' garlic
  Allium nigrum L. -- accepted -- black garlic
  Allium nuttallii S. Watson -- not accepted
  Allium obtusum Lemmon -- accepted -- red Sierra onion, red Sierran onion
  Allium obtusum var. conspicuum Mortola & McNeal -- accepted -- red Sierra onion
  Allium obtusum var. obtusum Lemmon -- accepted -- red Sierra onion, red Sierran onion
  Allium occidentale A. Gray -- not accepted
  Allium odorum L. -- accepted -- Chinese chives
  Allium oleraceum L. -- accepted -- field garlic
  Allium oxyphilum Wherry -- not accepted -- Lillydale onion
  Allium palmeri S. Watson -- not accepted
  Allium paniculatum L. -- accepted -- Mediterranean onion, wild onion
  Allium paniculatum var. paniculatum L. -- accepted -- Mediterranean onion
  Allium parishii S. Watson -- accepted -- Parish's onion
  Allium parishii var. keckii Munz -- not accepted
  Allium parryi S. Watson -- accepted -- Parry's fringed onion
  Allium parvum Kellogg -- accepted -- small onion
  Allium parvum var. brucae M.E. Jones -- not accepted
  Allium parvum var. jacintense Munz -- not accepted
  Allium passeyi N.H. Holmgren & A.H. Holmgren -- accepted -- Passey's onion
  Allium peninsulare Lemmon ex Greene -- accepted -- Mexicali onion, peninsula onion
  Allium peninsulare var. crispum (Greene) Jeps. -- not accepted
  Allium peninsulare var. franciscanum McNeal & Ownbey -- accepted -- San Francisco onion
  Allium peninsulare var. peninsulare Lemmon ex Greene -- accepted -- peninsula onion
  Allium perdulce S.V. Fraser -- accepted -- plains onion
  Allium perdulce var. perdulce S.V. Fraser -- accepted -- plains onion
  Allium perdulce var. sperryi Ownbey -- accepted -- Sperry's onion
  Allium platycaule S. Watson -- accepted -- broadstem onion, broadstemmed onion
  Allium platyphyllum Tidestr. -- not accepted
  Allium pleianthum S. Watson -- not accepted -- manyflower onion
  Allium plummerae S. Watson -- accepted -- Tanners Canyon onion
  Allium porrum L. -- accepted -- garden leek
  Allium praecox Brandegee -- accepted -- early onion
  Allium punctum L.F. Hend. -- accepted -- dotted onion
  Allium purdyi Eastw. -- not accepted
  Allium ramosum L. -- accepted
  Allium recurvatum Rydb. -- not accepted
  Allium reticulatum G. Don -- not accepted
  Allium reticulatum var. ecristatum M.E. Jones -- not accepted
  Allium reticulatum var. playanum M.E. Jones -- not accepted
  Allium rhizomatum Wooton & Standl. -- accepted
  Allium robinsonii L.F. Hend. -- accepted -- Robinson's onion
  Allium rotundum L. -- accepted
  Allium rubrum Osterh. -- not accepted
  Allium runyonii Ownbey -- accepted -- Runyon's onion
  Allium rydbergii J.F. Macbr. -- not accepted
  Allium sabulicola Osterh. -- not accepted
  Allium sanbenitense Traub -- not accepted
  Allium sanbornii Alph. Wood -- accepted -- Sanborn's onion
  Allium sanbornii ssp. intactum (Jeps.) Traub -- not accepted
  Allium sanbornii var. congdonii Jeps. -- accepted -- Congdon's onion
  Allium sanbornii var. jepsonii Ownbey & Aase -- not accepted
  Allium sanbornii var. sanbornii Alph. Wood -- accepted -- Sanborn's onion
  Allium sanbornii var. tuolumnense Ownbey & Aase -- not accepted
  Allium sativum L. -- accepted -- cultivated garlic
  Allium sativum var. sativum L. -- accepted -- cultivated garlic
  Allium scaposum Benth. -- not accepted
  Allium schoenoprasum L. -- accepted -- wild chive, wild chives
  Allium schoenoprasum ssp. sibiricum (L.) Celak. -- not accepted
  Allium schoenoprasum var. laurentianum Fernald -- not accepted
  Allium schoenoprasum var. schoenoprasum L. -- not accepted -- wild chives
  Allium schoenoprasum var. sibiricum (L.) Hartm. -- not accepted -- wild chives
  Allium scilloides Douglas ex S. Watson -- accepted -- fragile onion
  Allium scissum A. Nelson & J.F. Macbr. -- not accepted
  Allium scorodoprasum L. -- accepted -- sand leek
  Allium scorodoprasum ssp. rotundum (L.) Stearn -- not accepted -- sand leek
  Allium serra McNeal & Ownbey -- accepted -- jeweled onion
  Allium serratum S. Watson -- not accepted -- pompom onion
  Allium sharsmithiae (Ownbey & Aase) McNeal -- accepted -- Sharsmith's onion
  Allium shevockii McNeal -- accepted -- Spanish needle onion
  Allium sibiricum L. -- not accepted
  Allium simillimum L.F. Hend. -- accepted -- simil onion
  Allium siskiyouense Ownbey -- accepted -- Siskiyou onion
  Allium speculae Ownbey & Aase -- accepted -- Little River Canyon onion
  Allium stellatum Fraser ex Ker Gawl. -- accepted -- autumn onion, prairie onion
  Allium stenanthum Drew -- not accepted
  Allium textile A. Nelson & J.F. Macbr. -- accepted -- prairie onion, textile onion, wild onion
  Allium tolmiei Baker -- accepted -- Tolm's onion, Tolmie onion, Tolmie's onion
  Allium tolmiei var. persimile Ownbey -- accepted -- sevendevils onion
  Allium tolmiei var. platyphyllum (Tidestr.) Ownbey -- not accepted -- Wallowa onion
  Allium tolmiei var. tolmiei Baker -- accepted -- Tolm's onion, Tolmie's onion
  Allium tribracteatum Torr. -- accepted -- threebract onion
  Allium tribracteatum var. andersonii S. Watson -- not accepted
  Allium tribracteatum var. diehlii M.E. Jones -- not accepted
  Allium tricoccum Aiton -- accepted -- ail des bois, ramp, small white leek, wild leek
  Allium tricoccum var. burdickii Hanes -- accepted -- narrowleaf wild leek
  Allium tricoccum var. tricoccum Aiton -- accepted -- ramp, wild leek
  Allium triquetrum L. -- accepted -- threecorner leek
  Allium tuberosum Rottler ex Spreng. -- accepted -- Chinese chives
  Allium tuolumnense (Ownbey & Aase) S. Denison & McNeal -- accepted -- Rawhide Hill onion
  Allium unifolium Kellogg -- accepted -- oneleaf onion
  Allium ursinum L. -- accepted -- bear garlic
  Allium validum S. Watson -- accepted -- Pacific onion, swamp onion
  Allium vancouverense Macoun -- not accepted
  Allium victorialis L. -- accepted -- victory onion
  Allium victorialis ssp. platyphyllum Hultén -- not accepted
  Allium vineale L. -- accepted -- wild garlic
  Allium vineale ssp. compactum (Thuill.) Coss. & Germ. -- not accepted -- compact onion, wild garlic
  Allium vineale ssp. kochii (Lange) K. Richt. -- not accepted -- Koch's garlic
  Allium vineale ssp. vineale L. -- not accepted -- wild garlic
  Allium vineale var. compactum (Thuill.) Asch. -- not accepted
  Allium watsonii Howell -- not accepted
  Allium X proliferum (Moench) Schrad. ex Willd. -- not accepted -- garden onion
  Allium yosemitense Eastw. -- accepted -- Yosemite onion
  Allium zenobiae Cory -- not accepted
  Aloe L. -- accepted -- aloes
  Aloe arborescens Mill. -- accepted -- aloé arborescente, aločs arborescent, atzavara, balsemera, candelabra aloe, candelabra plant, Kidachi aloe, krans aloe, krantz aloe, mountain bush aloe, octopus plant, Oldenland's bush aloe, pulpos, sword aloe, torch plant, woody aloe, zabila
  Aloe barbadensis Mill. -- not accepted
  Aloe ferox Mill. -- accepted -- acibara, áloe del cabo, aločs du Cap, bitter aloe, Cape aloe, Cape prickly aloe, common aloe, cultivated aloe, medicinal aloe, new aloes, red aloe, tap aloe
  Aloe graminicola Reynolds -- not accepted
  Aloe lateritia Engl. -- accepted
  Aloe perfoliata var. vera L. -- not accepted
  Aloe perryi Baker -- accepted -- Perry's aloe, Socotra aloe, Zanzibar aloe
  Aloe secundiflora Engl. -- accepted
  Aloe striatula Haw. -- accepted -- stripe-sheathed narrow-leaved aloe
  Aloe succotrina Lam. -- not accepted -- Fynbos aloe
  Aloe vera (L.) Burm. f. -- accepted -- acíbar, áloe de los Barbados, aloe vera, aločs amer, aločs vulgaire, aloja, atzavara, Barbados aloe, burn plant, coastal aloe, common aloe, Curaçao aloe, flor de deserto, Indian aloe, Jaffarabad aloe, lináloe, loto de deserto, maguey morado, mazambron, medicinal aloe, Mediterranean aloe, penca sábila, pita zabila, pitera amarelo, sábila do penca, star cactus, toots amarelo, true aloe, unguentine cactus, West Indian aloe
  Aloe vulgaris Lam. -- not accepted
  Aloe X schoenlandi Baker -- not accepted
  Alstroemeria L. -- accepted -- lily of the Incas
  Alstroemeria aurantiaca D. Don -- not accepted
  Alstroemeria aurea Graham -- accepted -- Peruvian-lily
  Alstroemeria haemantha Ruiz & Pav. -- accepted -- purple-spot parrot-lily, purplespot parrotlily
  Alstroemeria psittacina Lehm. -- not accepted -- lily of the Incas
  Alstroemeria pulchella L. f. -- accepted -- parrot-lily, parrotlily
  Alstroemeriaceae -- accepted
  Amaryllidaceae -- accepted
  Amaryllis L. -- accepted -- amaryllis
  Amaryllis atamasco L. -- not accepted
  Amaryllis belladonna L. -- accepted -- belladonna lily
  Amaryllis punicea Lam. -- not accepted
  Amaryllis reginae L. -- not accepted
  Amaryllis striata Lam. -- not accepted
  Amaryllis vittata L'Hér. -- not accepted
  Amaryllis zeylanica L. -- not accepted
  Amianthium A. Gray -- accepted -- amianthium
  Amianthium muscaetoxicum (Walter) A. Gray -- not accepted -- flypoison
  Amianthium muscitoxicum (Walter) A. Gray -- accepted -- flypoison
  Ammocharis Herb. -- accepted -- ammocharis
  Ammocharis tinneana (Kotschy & Peyr.) Milne-Redh. & Schweick. -- accepted
  Androstephium Torr. -- accepted -- funnel lily, funnellily
  Androstephium breviflorum S. Watson -- accepted -- pink funnel lily, pink funnellily, smallflower androstephium
  Androstephium caeruleum (Scheele) Greene -- not accepted -- blue funnel lily
  Androstephium coeruleum (Scheele) Greene -- accepted -- blue funnel lily, blue funnellily
  Anthericum chandleri Greenm. & C.H. Thomp. -- not accepted -- lilia de los llanos
  Anthericum flavescens Schult. & Schult. f. -- not accepted
  Anthericum reflexum Cav. -- not accepted
  Anthericum torreyi Baker -- not accepted
  Anticlea Kunth -- accepted -- anticlea, deathcamas
  Anticlea chlorantha (Richardson) Rydb. -- not accepted
  Anticlea coloradensis (Rydb.) Rydb. -- not accepted
  Anticlea elegans (Pursh) Rydb. -- accepted -- mountain deathcamas
  Anticlea elegans var. elegans (Pursh) Rydb. -- accepted -- mountain deathcamas
  Anticlea elegans var. glaucus (Nutt.) Zomlefer & Judd -- accepted -- mountain deathcamas
  Anticlea fremontii Torr. -- not accepted
  Anticlea mogollonensis (W.J. Hess & Sivinski) Zomlefer & Judd -- accepted -- Mogoll deathcamas
  Anticlea occidentalis (A. Gray) Zomlefer & Judd -- accepted -- western featherbells
  Anticlea vaginata Rydb. -- accepted -- sheathed deathcamas
  Anticlea virescens (Kunth) Rydb. -- accepted -- green deathcamas
  Anticlea volcanica (Benth.) Baker -- accepted
  Arthropodium R. Br. -- accepted -- rock lily
  Arthropodium cirrhatum (G. Forst.) R. Br. -- accepted -- rock-lily
  Asparagaceae -- accepted
  Asparagus L. -- accepted -- asparagus
  Asparagus aethiopicus L. -- accepted -- Sprenger's asparagus fern
  Asparagus africanus Lam. -- accepted -- African asparagus
  Asparagus asparagoides (L.) Druce -- accepted -- African asparagus fern
  Asparagus densiflorus (Kunth) Jessop -- accepted
  Asparagus officinalis L. -- accepted -- asparagus, garden asparagus, garden-asparagus
  Asparagus officinalis ssp. officinalis L. -- not accepted
  Asparagus plumosus Baker -- not accepted
  Asparagus setaceus (Kunth) Jessop -- accepted -- common asparagus fern
  Asparagus sprengeri Regel -- not accepted
  Asphodelus L. -- accepted -- asphodel
  Asphodelus albus Mill. -- accepted -- gamón-blanco
  Asphodelus fistulosus L. -- accepted -- onionweed, pink asphodel
  Asphodelus sphaerocarpus Gren. & Grodr. -- not accepted
  Asphodelus tenuifolius Cav. -- not accepted
  Astelia Banks & Sol. ex R. Br. -- accepted -- pineapplegrass
  Astelia argyrocoma A. Heller ex Skottsb. -- accepted -- silverhair pineapplegrass
  Astelia degeneri Skottsb. -- not accepted
  Astelia forbesii Skottsb. -- not accepted
  Astelia forbesii ssp. fallax Skottsb. -- not accepted
  Astelia forbesii ssp. nivea Skottsb. -- not accepted
  Astelia forbesii ssp. pachysperma Skottsb. -- not accepted
  Astelia menziesiana Sm. -- accepted -- pua'akuhinia
  Astelia menziesiana var. depauperata Skottsb. -- not accepted
  Astelia veratroides Gaudich. -- not accepted
  Astelia veratroides ssp. macrosperma Skottsb. -- not accepted -- pa'iniu
  Astelia veratroides var. gracilis Skottsb. -- not accepted -- pa'iniu
  Astelia waialealae Wawra -- accepted -- Kauai pa'iniu
  Asteliaceae -- accepted
  Atamosco atamasco (L.) Greene -- not accepted
  Atamosco candida (Lindl.) Small -- not accepted
  Atamosco carinata (Herb.) P. Wilson -- not accepted
  Atamosco longifolia (Hemsl.) Cockerell -- not accepted
  Atamosco rosea (Lindl.) Greene -- not accepted
  Atamosco simpsonii (Chapm.) Greene -- not accepted
  Atamosco treatiae (S. Watson) Greene -- not accepted
  Atamosco tubispatha Britton & P. Wilson, non (L'Hér.) M. Gómez -- not accepted
  Beaucarnea Lem. -- accepted -- bottle-palm
  Beaucarnea recurvata Lem. -- accepted -- bottle-palm
  Bloomeria Kellogg -- accepted -- goldenstar
  Bloomeria aurea Kellogg -- not accepted
  Bloomeria clevelandii S. Watson -- accepted -- San Diego goldenstar
  Bloomeria crocea (Torr.) Coville -- accepted -- common goldenstar
  Bloomeria crocea var. aurea (Kellogg) J.W. Ingram -- accepted -- common goldenstar
  Bloomeria crocea var. crocea (Torr.) Coville -- accepted -- common goldenstar
  Bloomeria crocea var. montana (Greene) J.W. Ingram -- accepted -- common goldenstar
  Bloomeria humilis Hoover -- accepted -- dwarf goldenstar
  Bomarea Mirb. -- accepted -- bomarea
  Bomarea hirsuta (Kunth) Herb. -- accepted
  Bomarea kalbreyeri Baker -- not accepted
  Brevoortia ida-maia Alph. Wood -- not accepted
  Brevoortia venusta Greene -- not accepted
  Brodiaea Sm. -- accepted -- brodiaea
  Brodiaea appendiculata Hoover -- accepted -- appendage brodiaea
  Brodiaea bridgesii S. Watson -- not accepted
  Brodiaea californica Lindl. -- accepted -- California brodiaea
  Brodiaea californica ssp. californica Lindl. -- accepted -- California brodiaea
  Brodiaea californica ssp. leptandra (Greene) J.C. Pires -- accepted -- California brodiaea
  Brodiaea californica var. californica Lindl. -- not accepted -- California brodiaea
  Brodiaea californica var. leptandra (Greene) Hoover -- not accepted -- California brodiaea
  Brodiaea capitata Benth. -- not accepted
  Brodiaea clementina (Hoover) Munz -- not accepted
  Brodiaea congesta Sm. -- not accepted
  Brodiaea coronaria (Salisb.) Engl. -- accepted -- crown brodiaea
  Brodiaea coronaria ssp. coronaria (Salisb.) Engl. -- accepted -- crown brodiaea
  Brodiaea coronaria ssp. rosea (Greene) T.F.Niehaus -- accepted -- Indian Valley brodiaea
  Brodiaea coronaria var. kernensis Hoover -- not accepted
  Brodiaea coronaria var. macropoda (Torr.) Hoover -- not accepted
  Brodiaea coronaria var. rosea (Greene) Hoover -- not accepted
  Brodiaea crocea (Alph. Wood) S. Watson -- not accepted
  Brodiaea crocea var. modesta (H.M. Hall) Munz -- not accepted
  Brodiaea dissimulata M. Peck -- not accepted
  Brodiaea douglasii S. Watson -- not accepted
  Brodiaea douglasii var. howellii (S. Watson) M. Peck -- not accepted
  Brodiaea dudleyi (Hoover) Munz -- not accepted
  Brodiaea elegans Hoover -- accepted -- harvest brodiaea
  Brodiaea elegans ssp. elegans Hoover -- accepted -- harvest brodiaea
  Brodiaea elegans ssp. hooveri T.F. Niehaus -- accepted -- Hoover's brodiaea
  Brodiaea elegans var. australis Hoover -- not accepted
  Brodiaea elegans var. mundula (Jeps.) Hoover -- not accepted
  Brodiaea filifolia S. Watson -- accepted -- thread-leaved brodiaea, threadleaf brodiaea
  Brodiaea gracilis S. Watson -- not accepted
  Brodiaea grandiflora (Lindl.) J.F. Macbr. -- not accepted
  Brodiaea grandiflora var. minor Benth. -- not accepted
  Brodiaea hendersonii (Greene) S. Watson -- not accepted
  Brodiaea hendersonii var. galeae M. Peck -- not accepted
  Brodiaea howellii S. Watson -- not accepted
  Brodiaea hyacinthina (Lindl.) Baker -- not accepted
  Brodiaea hyacinthina var. greenei (Hoover) Munz -- not accepted
  Brodiaea hyacinthina var. lactea Baker -- not accepted
  Brodiaea ida-maia (Alph. Wood) Greene -- not accepted
  Brodiaea insignis (Jeps.) T.F. Niehaus -- accepted -- Kaweah brodiaea
  Brodiaea jolonensis Eastw. -- accepted -- chaparral brodiaea
  Brodiaea kinkiensis T.F. Niehaus -- accepted -- San Clemente Island brodiaea
  Brodiaea laxa (Benth.) S. Watson -- not accepted
  Brodiaea laxa var. candida (Greene) Jeps. -- not accepted
  Brodiaea laxa var. nimia Jeps. -- not accepted
  Brodiaea laxa var. tracyi Jeps. -- not accepted
  Brodiaea leachiae M. Peck -- not accepted
  Brodiaea lemmoniae S. Watson -- not accepted
  Brodiaea leptandra (Greene) Baker -- not accepted
  Brodiaea lugens (Greene) Baker -- not accepted
  Brodiaea lutea (Lindl.) C.V. Morton -- not accepted
  Brodiaea lutea var. anilina (Greene) Munz -- not accepted
  Brodiaea lutea var. cookii (Hoover) Munz -- not accepted
  Brodiaea lutea var. scabra (Greene) Munz -- not accepted
  Brodiaea minor (Benth.) S. Watson -- accepted -- vernalpool brodiaea
  Brodiaea minor var. nana (Hoover) Hoover -- not accepted
  Brodiaea multiflora Benth. -- not accepted
  Brodiaea nana Hoover -- accepted
  Brodiaea orcuttii (Greene) Baker -- accepted -- Orcutt's brodiaea
  Brodiaea pallida Hoover -- accepted -- Chinese Camp brodiaea
  Brodiaea palmeri S. Watson -- not accepted
  Brodiaea peduncularis (Lindl.) S. Watson -- not accepted
  Brodiaea pulchella (Salisb.) Greene -- not accepted
  Brodiaea pulchella var. pauciflora (Torr.) C.V. Morton -- not accepted
  Brodiaea purdyi Eastw. -- not accepted -- Sierra brodiaea
  Brodiaea rosea (Greene) Baker -- not accepted
  Brodiaea santarosae T.J. Chester, W.P. Armstr. & Madore -- accepted -- Santa Rosa basalt brodiaea
  Brodiaea scabra (Greene) Baker -- not accepted
  Brodiaea scabra var. anilina (Greene) Baker -- not accepted
  Brodiaea sierrae R.E. Preston -- accepted -- Sierra foothills brodiaea
  Brodiaea stellaris S. Watson -- accepted -- starflower brodiaea
  Brodiaea synandra var. insignis Jeps. -- not accepted
  Brodiaea terrestris Kellogg -- accepted -- dwarf brodiaea
  Brodiaea terrestris ssp. kernensis (Hoover) T.F. Niehaus -- accepted -- Kern brodiaea
  Brodiaea terrestris ssp. terrestris Kellogg -- accepted -- dwarf brodiaea
  Brodiaea uniflora (Lindl.) Engl. -- not accepted
  Brodiaea venusta (Greene) Greene -- not accepted
  Brodiaea versicolor (Hoover) Munz -- not accepted
  Brodiaea volubilis (Kellogg) Baker -- not accepted
  Bryocles ventricosa Salisb. -- not accepted
  Bulbine Wolf -- accepted
  Bulbine semibarbata (R. Br.) Haw. -- accepted
  Bulbocodium serotinum L. -- not accepted
  Calliprora ixioides (W.T. Aiton) Greene -- not accepted
  Calliprora ixioides var. lugens (Greene) Abrams -- not accepted
  Calliprora scabra Greene -- not accepted
  Calliprora scabra var. anilina Greene -- not accepted
  Calochortus Pursh -- accepted -- mariposa lily
  Calochortus albus Douglas ex Benth. -- accepted -- white fairy-lantern
  Calochortus albus var. rubellus Greene -- not accepted
  Calochortus amabilis Purdy -- accepted -- Diogenes' lantern
  Calochortus ambiguus (M.E. Jones) Ownbey -- accepted -- doubting mariposa lily
  Calochortus amoenus Greene -- accepted -- purple fairy-lantern
  Calochortus apiculatus Baker -- accepted -- pointedtip mariposa lily
  Calochortus argillosus (Hoover) Zebell & P.L. Fiedl. -- accepted -- clay mariposa lily
  Calochortus aureus S. Watson -- accepted -- golden mariposa lily
  Calochortus bruneaunis A. Nelson & J.F. Macbr. -- accepted -- Bruneau mariposa lily
  Calochortus caeruleus (Kellogg) S. Watson -- not accepted -- beavertail grass
  Calochortus caeruleus var. fimbriatus Ownbey -- not accepted
  Calochortus caeruleus var. maweanus (Leichtlin) Jeps. -- not accepted
  Calochortus caeruleus var. nanus (Alph. Wood) Ownbey -- not accepted
  Calochortus caeruleus var. westonii (Eastw.) Ownbey -- not accepted
  Calochortus catalinae S. Watson -- accepted -- Santa Catalina mariposa lily
  Calochortus clavatus S. Watson -- accepted -- clubhair mariposa lily
  Calochortus clavatus ssp. pallidus (Hoover) Munz -- not accepted
  Calochortus clavatus ssp. recurvifolius (Hoover) Munz -- not accepted -- Arroyo de la Cruz mariposa lily
  Calochortus clavatus var. avius Jeps. -- accepted -- clubhair mariposa lily, Pleasant Valley mariposa
  Calochortus clavatus var. clavatus S. Watson -- accepted -- clubhair mariposa lily
  Calochortus clavatus var. gracilis Ownbey -- accepted -- slender mariposa lily
  Calochortus clavatus var. pallidus (Hoover) P.L. Fiedl. & Zebell -- accepted -- clubhair mariposa lily
  Calochortus clavatus var. recurvifolius (Hoover) P.L. Fiedl. & Zebell -- accepted -- Arroyo de la Cruz mariposa lily
  Calochortus coeruleus (Kellogg) S. Watson -- accepted -- beavertail grass
  Calochortus coeruleus var. fimbriatus Ownbey -- not accepted
  Calochortus coeruleus var. maweanus (Leichtlin) Jeps. -- not accepted
  Calochortus coeruleus var. nanus (Alph. Wood) Ownbey -- not accepted
  Calochortus coeruleus var. westonii (Eastw.) Ownbey -- not accepted
  Calochortus concolor (Baker) Purdy -- accepted -- goldenbowl mariposa lily
  Calochortus coxii M.R. Godfrey & Callahan -- accepted -- Cox's mariposa lily
  Calochortus davidsonianus Abrams -- not accepted
  Calochortus douglasianus Schult. f. -- not accepted
  Calochortus dunnii Purdy -- accepted -- Dunn's mariposa lily
  Calochortus elegans Pursh -- accepted -- elegant mariposa lily
  Calochortus elegans var. elegans Pursh -- accepted -- elegant mariposa lily
  Calochortus elegans var. lobbii Baker -- not accepted
  Calochortus elegans var. nanus Alph. Wood -- accepted -- elegant mariposa lily
  Calochortus elegans var. oreophilus Ownbey -- not accepted -- elegant mariposa lily
  Calochortus elegans var. selwayensis (H. St. John) Ownbey -- accepted -- Selway mariposa lily
  Calochortus eurycarpus S. Watson -- accepted -- bigpod mariposa lily, white mariposa lily
  Calochortus excavatus Greene -- accepted -- Inyo County star-tulip, Inyo mariposa lily
  Calochortus flexuosus S. Watson -- accepted -- straggling mariposa lily, weakstem mariposa lily, winding mariposa lily
  Calochortus greenei S. Watson -- accepted -- Greene's mariposa lily
  Calochortus gunnisonii S. Watson -- accepted -- Gunnison mariposa lily, Gunnison's mariposa lily
  Calochortus gunnisonii var. gunnisonii S. Watson -- accepted -- Gunnison mariposa lily, Gunnison's mariposa lily
  Calochortus gunnisonii var. perpulcher Cockerell -- accepted -- Gunnison's mariposa lily
  Calochortus howellii S. Watson -- accepted -- Howell's mariposa lily
  Calochortus indecorus Ownbey & M. Peck -- accepted -- Sexton Mountain mariposa lily
  Calochortus invenustus Greene -- accepted -- plain mariposa lily
  Calochortus kennedyi Porter -- accepted -- desert mariposa lily, red mariposa lily
  Calochortus kennedyi var. kennedyi Porter -- accepted -- desert mariposa lily
  Calochortus kennedyi var. munzii Jeps. -- accepted -- desert mariposa lily
  Calochortus leichtlinii Hook. f. -- accepted -- Leichtlin's mariposa lily, smokey mariposa
  Calochortus lobbii sensu Purdy -- not accepted
  Calochortus longebarbatus S. Watson -- accepted -- longbeard mariposa lily
  Calochortus longebarbatus var. longebarbatus S. Watson -- accepted -- long-haired star-tulip, longbeard mariposa lily
  Calochortus longebarbatus var. peckii Ownbey -- accepted -- longbeard mariposa lily, Peck's mariposa
  Calochortus luteus Douglas ex Lindl. -- accepted -- yellow mariposa lily
  Calochortus luteus var. citrinus (Baker) S. Watson -- not accepted
  Calochortus luteus var. concolor Baker -- not accepted
  Calochortus luteus var. oculatus S. Watson -- not accepted
  Calochortus lyallii Baker -- accepted -- Lyall's mariposa lily
  Calochortus macrocarpus Douglas -- accepted -- greenband mariposa lily, sagebrush mariposa lily
  Calochortus macrocarpus var. macrocarpus Douglas -- accepted -- sagebrush mariposa lily
  Calochortus macrocarpus var. maculosus (A. Nelson & J.F. Macbr.) A. Nelson & J.F. Macbr. -- accepted -- Nez Perce mariposa lily
  Calochortus maculosus A. Nelson & J.F. Macbr. -- not accepted
  Calochortus maweanus Leichtlin -- not accepted
  Calochortus minimus Ownbey -- accepted -- Sierra mariposa lily
  Calochortus monanthus Ownbey -- accepted -- Shasta River mariposa lily
  Calochortus monophyllus (Lindl.) Lem. -- accepted -- yellow star-tulip
  Calochortus nanus (Alph. Wood) Piper -- not accepted
  Calochortus nitidus Douglas -- accepted -- broadfruit mariposa, broadfruit mariposa lily
  Calochortus nudus S. Watson -- accepted -- naked mariposa lily
  Calochortus nudus var. shastensis (Purdy) Jeps. -- not accepted
  Calochortus nuttallii Torr. & A. Gray -- accepted -- sego lily, sego-lily
  Calochortus nuttallii var. aureus (S. Watson) Ownbey -- not accepted
  Calochortus nuttallii var. bruneaunis (A. Nelson & J.F. Macbr.) Ownbey -- not accepted
  Calochortus nuttallii var. panamintensis Ownbey -- not accepted
  Calochortus obispoensis Lemmon -- accepted -- San Luis mariposa lily
  Calochortus palmeri S. Watson -- accepted -- Palmer's mariposa lily
  Calochortus palmeri var. munzii Ownbey -- accepted -- Munz's mariposa lily
  Calochortus palmeri var. palmeri S. Watson -- accepted -- Palmer's mariposa lily
  Calochortus paludicola Davidson -- not accepted
  Calochortus panamintensis (Ownbey) Reveal -- accepted -- Panamint Mountain mariposa lily
  Calochortus persistens Ownbey -- accepted -- Siskiyou mariposa lily
  Calochortus plummerae Greene -- accepted -- Plummer's mariposa lily
  Calochortus pulchellus Douglas ex Benth. -- accepted -- Mount Diablo fairy-lantern
  Calochortus purdyi Eastw. -- not accepted
  Calochortus raichei Farwig & V. Girard -- accepted -- Cedars mariposa lily, The Cedars globe-lily
  Calochortus rhodothecus Clokey -- not accepted
  Calochortus selwayensis H. St. John -- not accepted
  Calochortus shastensis Purdy -- not accepted
  Calochortus simulans (Hoover) Munz -- accepted -- San Luis Obispo mariposa lily
  Calochortus splendens Douglas ex Benth. -- accepted -- desert senna, splendid mariposa lily
  Calochortus striatus Parish -- accepted -- alkali mariposa lily
  Calochortus subalpinus Piper -- accepted -- subalpine mariposa lily
  Calochortus superbus Purdy ex J.T. Howell -- accepted -- yellow mariposa
  Calochortus tiburonensis A.J. Hill -- accepted -- Tiburon mariposa lily
  Calochortus tolmiei Hook. & Arn. -- accepted -- Tolmie star-tulip
  Calochortus umbellatus Alph. Wood -- accepted -- Oakland mariposa lily
  Calochortus umpquaensis Fredricks -- accepted -- Umpqua mariposa lily
  Calochortus uniflorus Hook. & Arn. -- accepted -- Monterey mariposa lily
  Calochortus venustus Douglas ex Benth. -- accepted -- butterfly mariposa lily
  Calochortus venustus var. carolii Cockerell -- not accepted
  Calochortus venustus var. purpurascens S. Watson -- not accepted
  Calochortus venustus var. sanguineus Horton -- not accepted
  Calochortus venustus var. sulphureus Purdy -- not accepted
  Calochortus vestae Purdy -- accepted -- coast range mariposa lily
  Calochortus watsonii var. ambiguus M.E. Jones -- not accepted
  Calochortus weedii Alph. Wood -- accepted -- Weed's mariposa lily
  Calochortus weedii var. intermedius Ownbey -- accepted -- foothill mariposa lily, Weed's mariposa lily
  Calochortus weedii var. vestus Purdy -- accepted -- Weed's mariposa lily
  Calochortus weedii var. weedii Alph. Wood -- accepted -- Weed's mariposa lily
  Calochortus westonii Eastw. -- accepted -- Shirley Meadows mariposa lily
  Camassia Lindl. -- accepted -- camas
  Camassia angusta (Engelm. & A. Gray) Blank. -- accepted -- prairie camas
  Camassia cusickii S. Watson -- accepted -- Cusick's camas
  Camassia esculenta (Raf.) Cory -- not accepted
  Camassia howellii S. Watson -- accepted -- Howell's camas
  Camassia leichtlinii (Baker) S. Watson -- accepted -- camas, great camas, large camas
  Camassia leichtlinii ssp. leichtlinii (Baker) S. Watson -- accepted -- large camas, Leichtlin camassia
  Camassia leichtlinii ssp. suksdorfii (Greenm.) Gould -- accepted -- Suksdorf's large camas
  Camassia leichtlinii var. suksdorfii (Greenm.) C.L. Hitchc. -- not accepted
  Camassia quamash (Pursh) Greene -- accepted -- common camas, small camas
  Camassia quamash ssp. azurea (A. Heller) Gould -- accepted -- small camas
  Camassia quamash ssp. breviflora Gould -- accepted -- small camas
  Camassia quamash ssp. intermedia Gould -- accepted -- small camas
  Camassia quamash ssp. linearis Gould -- accepted -- small camas
  Camassia quamash ssp. maxima Gould -- accepted -- small camas
  Camassia quamash ssp. quamash (Pursh) Greene -- accepted -- small camas
  Camassia quamash ssp. teapeae (H. St. John) H. St. John -- not accepted
  Camassia quamash ssp. utahensis Gould -- accepted -- Utah small camas
  Camassia quamash ssp. walpolei (Piper) Gould -- accepted -- Walpole's small camas
  Camassia quamash var. azurea (A. Heller) C.L. Hitchc. -- not accepted
  Camassia quamash var. breviflora (Gould) C.L. Hitchc. -- not accepted
  Camassia quamash var. intermedia (Gould) C.L. Hitchc. -- not accepted
  Camassia quamash var. linearis (Gould) J.T. Howell -- not accepted
  Camassia quamash var. maxima (Gould) B. Boivin -- not accepted
  Camassia quamash var. utahensis (Gould) C.L. Hitchc. -- not accepted
  Camassia scilloides (Raf.) Cory -- accepted -- Atlantic camas
  Camassia suksdorfii Greenm. -- not accepted
  Chamaelirium Willd. -- accepted -- chamaelirium
  Chamaelirium luteum (L.) A. Gray -- accepted -- fairywand
  Chamaelirium obovale Small -- not accepted
  Chionodoxa Boiss. -- accepted -- chionodoxa
  Chionodoxa cretica Boiss. & Heldr. -- not accepted
  Chionodoxa forbesii Baker -- accepted -- glory-of-the-snow
  Chionodoxa luciliae Boiss. -- accepted -- glory of the snow
  Chionodoxa sardensis Whittall ex Barr & Sugden -- accepted -- glory-of-the-snow
  Chlorogalum Kunth -- accepted -- soapplant
  Chlorogalum angustifolium Kellogg -- accepted -- narrowleaf soap plant
  Chlorogalum grandiflorum Hoover -- accepted -- Red Hills soap plant, Red Hills soaproot
  Chlorogalum parviflorum S. Watson -- accepted -- smallflower soap plant
  Chlorogalum pomeridianum (DC.) Kunth -- accepted -- wavyleaf soap plant
  Chlorogalum pomeridianum var. divaricatum (Lindl.) Hoover -- accepted -- wavyleaf soap plant
  Chlorogalum pomeridianum var. minus Hoover -- accepted -- wavyleaf soap plant
  Chlorogalum pomeridianum var. pomeridianum (DC.) Kunth -- accepted -- wavyleaf soap plant
  Chlorogalum purpureum Brandegee -- accepted -- purple amole
  Chlorogalum purpureum var. purpureum Brandegee -- accepted -- purple amole, purple anole
  Chlorogalum purpureum var. reductum Hoover -- accepted -- Camatta Canyon amole, purple amole
  Chlorophytum Ker Gawl. -- accepted -- chlorophytum
  Chlorophytum capense (L.) Voss -- accepted -- bracketplant
  Chlorophytum comosum (Thunb.) Jacques -- accepted -- spider plant
  Choretis galvestonensis Herb. -- not accepted
  Chrosperma muscitoxicum (Walter) Kuntze -- not accepted
  Clintonia Raf. -- accepted -- bluebead
  Clintonia alleghaniensis Harned -- not accepted
  Clintonia andrewsiana Torr. -- accepted -- Andrew's clintonia
  Clintonia borealis (Aiton) Raf. -- accepted -- bluebead
  Clintonia umbellulata (Michx.) Morong -- accepted -- white clintonia
  Clintonia uniflora (Menzies ex Schult. & Schult. f.) Kunth -- accepted -- bride's bonnet
  Clistoyucca brevifolia (Engelm.) Rydb. -- not accepted
  Clivia Lindl. -- accepted -- Kaffir-lily
  Clivia miniata (Lindl.) Regel -- accepted -- Kaffir-lily
  Colchicaceae -- accepted
  Colchicum L. -- accepted -- colchicum
  Colchicum autumnale L. -- accepted -- autumn crocus
  Colchicum speciosum Steven -- accepted -- showy colchicum
  Convallaria L. -- accepted -- convallaria, lily of the valley
  Convallaria biflora Walter -- not accepted
  Convallaria fruticosa L. -- not accepted
  Convallaria majalis L. -- accepted -- European lily of the valley, lily-of-the-valley
  Convallaria majalis var. majalis L. -- accepted -- European lily of the valley
  Convallaria majalis var. montana (Raf.) H.E. Ahles -- accepted
  Convallaria majuscula Greene -- not accepted -- American lily of the valley, American lily-of-the-valley
  Convallaria montana Raf. -- not accepted
  Convallaria pubescens Willd. -- not accepted
  Convallaria racemosa L. -- not accepted
  Convallaria stellata L. -- not accepted
  Convallaria trifolia L. -- not accepted
  Cooperia Herb. -- not accepted -- rainlily
  Cooperia drummondii Herb. -- not accepted -- evening rainlily, Texas rainlily
  Cooperia jonesii Cory -- not accepted -- Jones' rainlily
  Cooperia pedunculata Herb. -- not accepted -- coopers rainlily, prairie lily
  Cooperia smallii Alexander -- not accepted -- Small's rainlily
  Cooperia traubii W. Hayw. -- not accepted -- Traub's rainlily
  Cordyline Comm. ex R. Br. -- accepted -- cordyline
  Cordyline australis (G. Forst.) Endl. -- accepted -- cabbage tree
  Cordyline banksii Hook. f. -- accepted -- ti ngahere
  Cordyline fruticosa (L.) A. Chev -- accepted -- tiplant
  Cordyline guineensis (L.) Britton -- not accepted
  Cordyline terminalis (L.) Kunth -- not accepted
  Cordyline terminalis var. ti (Schott) Baker -- not accepted
  Crinum L. -- accepted -- swamplily
  Crinum amabile Ker Gawl. -- not accepted -- giant swamplily
  Crinum americanum L. -- accepted -- seven sisters
  Crinum americanum var. americanum L. -- accepted -- seven sisters
  Crinum americanum var. traubii (Moldenke) L.S. Hannibal -- accepted -- seven sisters
  Crinum asiaticum L. -- accepted -- poisonbulb
  Crinum bulbispermum (Burm. f.) Milne-Redh. & Schweick. -- accepted -- hardy swamplily
  Crinum floridanum Fraser ex Steud. -- not accepted
  Crinum latifolium var. zeylanicum (L.) Hook. f. -- not accepted
  Crinum longifolium (L.) Thunb. -- accepted
  Crinum macowanii Baker -- accepted -- pyjama lily
  Crinum strictum Herb. -- not accepted
  Crinum strictum var. traubii Moldenke -- not accepted
  Crinum zeylanicum (L.) L. -- accepted -- Ceylon swamplily
  Curculigo Gaertn. -- accepted -- curculigo
  Curculigo capitulata (Lour.) Kuntze -- not accepted -- palm-grass
  Curculigo orchioides Gaertn. -- accepted
  Curculigo scorzonerifolia (Lam.) Baker -- accepted -- gorgojo
  Cyclobothra caerulea Kellogg -- not accepted
  Cyclobothra coerulea Kellogg -- not accepted
  Cyclobothra monophylla Lindl. -- not accepted
  Dasylirion Zucc. -- accepted -- sotol
  Dasylirion heteracanthum I.M. Johnst. -- not accepted -- Trans-Pecos sotol
  Dasylirion leiophyllum Engelm. ex Trel. -- accepted -- green sotol, smooth sotol, Sotol brillante
  Dasylirion texanum Scheele -- accepted -- Sotol texano, Texas sotol
  Dasylirion wheeleri S. Watson -- accepted -- common sotol, sotol, Sotol de desierto
  Dianella Lam. -- accepted -- dianella
  Dianella caerulea Sims -- not accepted -- cerulean flaxlily
  Dianella ensifolia (L.) DC. -- accepted -- cerulean flaxlily
  Dianella odorata Blume -- not accepted
  Dianella saffordiana Fosberg & Sachet -- accepted
  Dianella sandwicensis Hook. & Arn. -- accepted -- `uki`uki
  Dichelostemma Kunth -- accepted -- snakelily
  Dichelostemma californicum (Torr.) Alph. Wood -- not accepted
  Dichelostemma capitatum (Benth.) Alph. Wood -- accepted -- bluedicks
  Dichelostemma capitatum ssp. capitatum (Benth.) Alph. Wood -- accepted -- bluedick, bluedicks
  Dichelostemma capitatum ssp. pauciflorum (Torr.) Keator -- accepted -- bluedicks
  Dichelostemma congestum (Sm.) Kunth -- accepted -- ookow
  Dichelostemma ida-maia (Alph. Wood) Greene -- accepted -- firecracker flower
  Dichelostemma lacuna-vernalis L.W. Lenz -- not accepted
  Dichelostemma multiflorum (Benth.) A. Heller -- accepted -- roundtooth snakelily
  Dichelostemma pulchellum (Salisb.) A. Heller -- not accepted
  Dichelostemma pulchellum var. capitatum (Benth.) Reveal -- not accepted
  Dichelostemma pulchellum var. pauciflorum (Torr.) Hoover -- not accepted
  Dichelostemma volubile (Kellogg) A. Heller -- accepted -- twining snakelily
  Dichelostemma X venustum (Greene) Hoover (pro. sp.) -- not accepted -- rose firecracker flower, snakelily
  Disporum Salisb. ex D. Don -- accepted -- fairybells
  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. oreganum (S. Watson) Q. Jones -- not accepted -- Oregon drops of gold
  Disporum hookeri var. parvifolium (S. Watson) Britton -- not accepted -- drops of gold
  Disporum hookeri var. trachyandrum (Torr.) Q. Jones -- not accepted -- drops of gold
  Disporum lanuginosum (Michx.) G. Nicholson -- not accepted -- yellow fairybells
  Disporum maculatum (Buckley) Britton -- not accepted -- yellow mandarin
  Disporum oreganum (S. Watson) W.T. Mill. -- not accepted
  Disporum parvifolium (S. Watson) Britton -- not accepted
  Disporum smithii (Hook.) Piper -- not accepted -- largeflower fairybells
  Disporum trachyandrum (Torr.) Britton -- not accepted
  Disporum trachycarpum (S. Watson) Benth. & Hook. f. -- not accepted -- rough-fruit fairybells, roughfruit fairybells, wartberry fairybells
  Disporum trachycarpum var. subglabrum E.H. Kelso -- not accepted
  Dracaena L. -- accepted -- dracaena
  Dracaena aurea H. Mann -- accepted
  Dracaena borealis Aiton -- not accepted
  Dracaena cinnabari Balf. f. -- accepted -- Socotra dragontree
  Dracaena concinna Kunth -- accepted
  Dracaena draco (L.) L. -- accepted -- dragontree
  Dracaena fernaldii (H. St. John) Jankalski -- accepted
  Dracaena forbesii O. Deg. -- accepted
  Dracaena fragrans (L.) Ker Gawl. -- accepted -- fragrant dracaena
  Dracaena halapepe (H. St. John) Jankalski -- accepted
  Dracaena hawaiiensis Fosberg -- not accepted
  Dracaena konaensis (H. St. John) Jankalski -- accepted
  Dracaena marginata Lam. -- not accepted -- dragontree
  Dracaena reflexa Lam. -- accepted
  Dracaena reflexa var. angustifolia Baker -- accepted
  Dracaena rockii (H. St. John) Jankalski -- not accepted
  Dracaena steudneri Schweinf. ex Engl. -- accepted -- bush nightfighter
  Dracaena surculosa Lindl. -- accepted -- gold dust dracaena
  Dracaena terminalis (L.) L. -- not accepted
  Drimia Jacq. ex Willd. -- accepted
  Drimia maritima (L.) Stearn -- accepted
  Echeandia Ortega -- accepted -- echeandia
  Echeandia chandleri (Greenm. & C.H. Thomp.) M.C. Johnst. -- accepted -- Chandler's craglily
  Echeandia flavescens (Schult. & Schult. f.) Cruden -- accepted -- amberlily, Torrey's craglily
  Echeandia reflexa (Cav.) Rose -- accepted -- reflexed craglily
  Echeandia texensis Cruden -- accepted -- Texas craglily
  Endymion hispanicus (Mill.) Chouard -- not accepted
  Endymion non-scripta (L.) Garcke -- not accepted
  Endymion nonscripta (L.) Garcke -- not accepted
  Eremocrinum M.E. Jones -- accepted -- eremocrinum
  Eremocrinum albomarginatum (M.E. Jones) M.E. Jones -- accepted -- lonely lily, lonely-lily
  Erythronium L. -- accepted -- fawnlily
  Erythronium albidum Nutt. -- accepted -- small white fawnlily, white fawnlily
  Erythronium albidum var. coloratum Sterns -- not accepted
  Erythronium albidum var. mesochoreum (Knerr) Rickett -- not accepted
  Erythronium americanum Ker Gawl. -- accepted -- dogtooth violet
  Erythronium americanum ssp. americanum Ker Gawl. -- accepted -- dogtooth violet
  Erythronium americanum ssp. harperi (W. Wolf) C.R. Parks & Hardin -- accepted -- dogtooth violet
  Erythronium americanum var. rubrum Farw. -- not accepted
  Erythronium californicum Purdy -- accepted -- California fawnlily
  Erythronium citrinum S. Watson -- accepted -- cream fawnlily
  Erythronium citrinum var. citrinum S. Watson -- not accepted -- cream fawnlily
  Erythronium citrinum var. roderickii Shevock & G.A. Allen -- not accepted -- lemon colored fawn-lily, Roderick's fawnlily
  Erythronium elegans P.C. Hammond & K.L. Chambers -- accepted -- Coast Range fawnlily
  Erythronium giganteum auct. non Lindl. -- not accepted
  Erythronium giganteum ssp. leucandrum Applegate -- not accepted
  Erythronium grandiflorum Pursh -- accepted -- dogtooth lily, yellow avalanche-lily
  Erythronium grandiflorum ssp. candidum Piper -- accepted -- yellow avalanche-lily
  Erythronium grandiflorum ssp. chrysandrum Applegate -- not accepted -- yellow avalanche-lily
  Erythronium grandiflorum ssp. grandiflorum Pursh -- accepted -- yellow avalanche-lily
  Erythronium grandiflorum ssp. nudipetalum Applegate -- not accepted -- yellow avalanche-lily
  Erythronium grandiflorum ssp. pusaterii Munz & J.T. Howell -- not accepted -- Kaweah fawn lily
  Erythronium grandiflorum var. candidum (Piper) Abrams -- not accepted
  Erythronium grandiflorum var. chrysandrum (Applegate) Scoggan -- not accepted
  Erythronium grandiflorum var. idahoense (H. St. John & G.N. Jones) R.J. Davis -- not accepted
  Erythronium grandiflorum var. nudipetalum (Applegate) C.L. Hitchc. -- not accepted
  Erythronium grandiflorum var. pallidum H. St. John -- not accepted
  Erythronium helenae Applegate -- accepted -- Pacific fawnlily
  Erythronium hendersonii S. Watson -- accepted -- Henderson's fawnlily
  Erythronium howellii S. Watson -- not accepted -- Howell's fawnlily
  Erythronium idahoense H. St. John & G.N. Jones -- not accepted
  Erythronium klamathense Applegate -- accepted -- Klamath fawnlily
  Erythronium mesochoreum Knerr -- accepted -- midland fawnlily, white fawnlily
  Erythronium montanum S. Watson -- accepted -- white avalanche-lily
  Erythronium multiscapideum (Kellogg) A. Nelson & P.B. Kenn. -- accepted -- Sierra fawnlily
  Erythronium oregonum Applegate -- accepted -- giant white fawnlily
  Erythronium oregonum ssp. leucandrum (Applegate) Applegate -- not accepted -- giant white fawnlily
  Erythronium oregonum ssp. oregonum Applegate -- not accepted -- giant white fawnlily
  Erythronium parviflorum (S. Watson) Goodd. -- not accepted
  Erythronium pluriflorum Shevock, Bartel & G.A. Allen -- accepted -- manyflower fawnlily
  Erythronium propullans A. Gray -- accepted -- Minnesota dwarf trout lily, Minnesota fawnlily, Minnesota trout lily
  Erythronium purpurascens S. Watson -- accepted -- purple fawnlily
  Erythronium pusaterii (Munz & J.T. Howell) Shevock, Bartel & G.A. Allen -- accepted -- Kaweah Lakes fawnlily
  Erythronium quinaultense G.A. Allen -- accepted
  Erythronium revolutum Sm. -- accepted -- mahogany fawnlily
  Erythronium rostratum W. Wolf -- accepted -- yellow troutlily
  Erythronium taylorii Shevock & G.A. Allen -- accepted -- Taylor's fawnlily
  Erythronium tuolumnense Applegate -- accepted -- Tuolumne fawn-lily, Tuolumne fawnlily
  Erythronium umbilicatum C.R. Parks & Hardin -- accepted -- dimpled troutlily
  Erythronium umbilicatum ssp. monostolum C.R. Parks & Hardin -- accepted -- dimpled troutlily
  Erythronium umbilicatum ssp. umbilicatum C.R. Parks & Hardin -- accepted -- dimpled troutlily
  Eucharis Planch. & Linden -- accepted -- Amazonlily
  Eucharis amazonica Linden ex Planch. -- accepted -- Amazonlily
  Eucharis X grandiflora Planch. & Linden (pro. sp.) -- accepted
  Eurycles amboinensis (L.) Lindl. -- not accepted
  Fritillaria L. -- accepted -- fritillary, mission bells
  Fritillaria adamantina M. Peck -- not accepted -- Diamond Lake mission-bells
  Fritillaria affinis (Schult.) Sealy -- accepted -- checker lily
  Fritillaria affinis var. affinis (Schult.) Sealy -- accepted -- checker lily
  Fritillaria affinis var. tristulis (A.L. Grant) B. Ness -- accepted -- checker lily
  Fritillaria agrestis Greene -- accepted -- stink bells, stinkbells
  Fritillaria atropurpurea Nutt. -- accepted -- leopard lily, spotted fritillary, spotted missionbells
  Fritillaria atropurpurea var. falcata Jeps. -- not accepted
  Fritillaria atropurpurea var. pinetorum (Davidson) I.M. Johnst. -- not accepted
  Fritillaria biflora Lindl. -- accepted -- chocolate lily, mission bells
  Fritillaria biflora var. biflora Lindl. -- accepted -- chocolate lily, mission bells
  Fritillaria biflora var. ineziana Jeps. -- accepted -- chocolate lily
  Fritillaria biflora var. inflexa Jeps. -- not accepted
  Fritillaria brandegeei Eastw. -- accepted -- greenhorn fritillary
  Fritillaria camschatcensis (L.) Ker Gawl. -- accepted -- Kamchatka fritillary
  Fritillaria camschatcensis var. floribunda (Benth.) B. Boivin -- not accepted
  Fritillaria coccinea (Greene) Greene -- not accepted
  Fritillaria eastwoodiae R.M. Macfarl. -- accepted -- Butte County fritillary, Butte fritillary
  Fritillaria eximia Eastw. -- not accepted
  Fritillaria falcata (Jeps.) D.E. Beetle -- accepted -- talus fritillary
  Fritillaria gentneri Gilkey -- accepted -- Gentner's fritillary
  Fritillaria glauca Greene -- accepted -- Siskiyou fritillary
  Fritillaria gracillima Smiley -- not accepted
  Fritillaria grayana Rchb. f. & Baker -- not accepted -- Gray's fritillary
  Fritillaria hutchinsonii Davidson -- not accepted
  Fritillaria imperialis L. -- accepted -- imperial fritillary
  Fritillaria kamtschatcensis Torr. -- not accepted
  Fritillaria lanceolata Pursh -- not accepted
  Fritillaria lanceolata var. tristulis A.L. Grant -- not accepted
  Fritillaria liliacea Lindl. -- accepted -- fragrant fritillary
  Fritillaria liliacea Benth. -- not accepted
  Fritillaria meleagris L. -- accepted -- chequered lily
  Fritillaria micrantha A. Heller -- accepted -- brown fritillary
  Fritillaria multiflora Kellogg -- not accepted
  Fritillaria multiscapidea Kellogg -- not accepted
  Fritillaria mutica Lindl. -- not accepted
  Fritillaria mutica var. gracilis (S. Watson) Jeps. -- not accepted
  Fritillaria ojaiensis Davidson -- accepted -- Ojai fritillary
  Fritillaria parviflora Torr. -- not accepted
  Fritillaria phaeanthera Eastw. non. Purdy -- not accepted
  Fritillaria pinetorum Davidson -- accepted -- Davidson's fritillary, pinewoods fritillary
  Fritillaria pluriflora Torr. ex Benth. -- accepted -- adobe lily, adobe-lily
  Fritillaria pudica (Pursh) Spreng. -- accepted -- yellow bells, yellow fritillary, yellow missionbells, yellowbells
  Fritillaria purdyi Eastw. -- accepted -- Purdy's fritillary
  Fritillaria purpusii Purdy -- not accepted
  Fritillaria recurva Benth. -- accepted -- scarlet fritillary
  Fritillaria recurva var. coccinea Greene -- not accepted
  Fritillaria roderickii W. Knight -- not accepted
  Fritillaria striata Eastw. -- accepted -- Greenhorn adobe-lily, striped adobe lily
  Fritillaria succulenta Elmer -- not accepted
  Fritillaria viridea Kellogg -- accepted -- San Benito fritillary
  Furcraea Vent. -- accepted -- furcraea
  Furcraea foetida (L.) Haw. -- accepted -- Mauritius hemp
  Furcraea gigantea Vent. -- not accepted
  Furcraea hexapetala (Jacq.) Urb. -- accepted -- Cuban hemp
  Furcraea macrophylla Baker -- not accepted -- bigleaf sisal
  Furcraea selloa K. Koch -- accepted -- wild sisal
  Furcraea tuberosa (Mill.) W.T. Aiton -- accepted -- female karata
  Gagea Salisb. -- accepted -- gagea
  Gagea bohemica (Zauschn.) Schult. & Schult.f. -- accepted
  Gagea fistulosa Ker Gawl. -- not accepted -- star of Bethlehem
  Gagea villosa (M. Bieb.) Duby -- accepted -- hairy star of Bethlehem
  Galanthus L. -- accepted -- snowdrop
  Galanthus elewesii Hook. f. -- not accepted
  Galanthus elwesii Hook. f. -- accepted -- giant snowdrop
  Galanthus nivalis L. -- accepted -- snowdrop
  Gloriosa L. -- accepted -- flame lily
  Gloriosa rothschildiana O'Brien -- not accepted
  Gloriosa superba L. -- accepted -- flame lily
  Habranthus Herb. -- accepted -- copperlily
  Habranthus robustus Herb. ex Sweet -- accepted -- Brazilian copperlily
  Habranthus texanus (Herb.) Herb. ex Steud. (pro. syn.) -- not accepted
  Habranthus tubispathus (L'Hér.) Traub -- accepted -- Rio Grande copperlily
  Haemanthus katherinae Baker -- not accepted
  Haemanthus multiflorus Martyn -- not accepted -- blood-flower
  Harperocallis McDaniel -- accepted -- harperocallis
  Harperocallis flava McDaniel -- accepted -- Harper's beauty
  Hastingsia S. Watson -- accepted -- rushlily
  Hastingsia alba (Durand) S. Watson -- accepted -- white rushlily
  Hastingsia atropurpurea Becking -- accepted -- purple rushlily
  Hastingsia bracteosa S. Watson -- accepted -- largeflower rushlily
  Hastingsia bracteosa var. atropurpurea (Becking) F.A. Lang & Zika -- not accepted -- purple rushlily
  Hastingsia bracteosa var. bracteosa S. Watson -- not accepted -- largeflower rushlily
  Hastingsia serpenticola Becking -- not accepted
  Hastingsia serpentinicola Becking -- accepted -- Klamath rushlily
  Helonias L. -- accepted -- helonias
  Helonias asphodeloides L. -- not accepted
  Helonias bullata L. -- accepted -- swamp pink, swamppink
  Helonias graminea Ker Gawl. -- not accepted
  Helonias paniculatus Nutt. -- not accepted
  Helonias tenax Pursh -- not accepted
  Helonias virescens Kunth -- not accepted
  Hemerocallis L. -- accepted -- daylily
  Hemerocallis citrina Baroni -- accepted -- citron daylily, long yellow daylily
  Hemerocallis dumortieri C. Morren -- accepted -- Dumortier's daylily
  Hemerocallis flava (L.) L. -- not accepted
  Hemerocallis fulva (L.) L. -- accepted -- orange daylily, tawny daylily
  Hemerocallis fulva var. fulva (L.) L. -- not accepted -- orange daylily
  Hemerocallis fulva var. kwanso Regel -- not accepted
  Hemerocallis fulva var. rosea Stout -- not accepted
  Hemerocallis japonica (Thunb.) Thunb. 1784, non Thunb. 1794 -- not accepted
  Hemerocallis lancifolia Thunb. -- not accepted
  Hemerocallis lilioasphodelus L. -- accepted -- lemon daylily, lemon lily, yellow daylily
  Hemerocallis lilioasphodelus var. flava L. -- not accepted
  Hemerocallis lilioasphodelus var. major hort. -- not accepted
  Hemerocallis middendorffii Trautv. & C.A. Mey. -- accepted -- Amur daylily, Middendorff's daylily
  Hemerocallis minor Mill. -- accepted -- small daylily
  Hemerocallis plantaginea Lam. -- not accepted
  Hesperaloe Engelm. -- accepted -- false yucca, falseyucca
  Hesperaloe funifera (K. Koch) Trel. -- accepted -- New Mexico false yucca, New Mexico falseyucca, Samandoque común
  Hesperaloe parviflora (Torr.) J.M. Coult. -- accepted -- redflower false yucca, redflower falseyucca, Samandoque flor roja
  Hesperaloe parviflora var. engelmannii (Krauskopf) Trel. -- not accepted -- Engelmann's false yucca, Engelmann's falseyucca
  Hesperaloe parviflora var. parviflora (Torr.) J.M. Coult. -- not accepted -- redflower false yucca, smallflower falseyucca
  Hesperocallis A. Gray -- accepted -- desert lily
  Hesperocallis undulata A. Gray -- accepted -- desert lily
  Hesperoscordum hyacinthinum Lindl. -- not accepted
  Hesperoscordum lilacinum (Greene) A. Heller ex Abrams -- not accepted
  Hesperoscordum maritimum Torr. -- not accepted
  Hesperoyucca (Engelm.) Baker -- accepted
  Hesperoyucca newberryi (McKelvey) Clary -- accepted -- Newberry's yucca
  Hesperoyucca whipplei (Torr.) Baker -- accepted -- chaparral yucca
  Hippeastrum Herb. -- accepted -- hippeastrum
  Hippeastrum equestre (Aiton) Herb. -- not accepted
  Hippeastrum puniceum (Lam.) Kuntze -- accepted -- Barbados lily
  Hippeastrum reginae (L.) Herb. -- accepted
  Hippeastrum striatum (Lam.) H.E. Moore -- accepted -- striped Barbados lily
  Hippeastrum vittatum (L'Hér.) Herb. -- accepted
  Hookera filifolia (S. Watson) Greene -- not accepted
  Hookera leptandra Greene -- not accepted
  Hookera minor (Benth.) Kunze -- not accepted
  Hookera orcuttii Greene -- not accepted
  Hookera pulchella Salisb. -- not accepted
  Hookera rosea Greene -- not accepted
  Hookera stellaris (S. Watson) Greene -- not accepted
  Hosta Tratt. -- accepted -- plantain lily
  Hosta japonica (Thunb.) Voss, non Tratt. -- not accepted
  Hosta lancifolia Engl. -- accepted -- narrowleaf plantain lily
  Hosta plantaginea (Lam.) Asch. -- accepted -- fragrant plantain lily
  Hosta tsushimensis N. Fujita -- accepted
  Hosta ventricosa (Salisb.) Stearn -- accepted -- blue plantain lily
  Hyacinthoides Medik. -- accepted -- hyacinthoides
  Hyacinthoides hispanica (Mill.) Rothm. -- accepted -- Hispanic hyacinthoides
  Hyacinthoides non-scripta (L.) Chouard -- accepted -- English bluebell
  Hyacinthus L. -- accepted -- hyacinth
  Hyacinthus botryoides L. -- not accepted
  Hyacinthus orientalis L. -- accepted -- garden hyacinth
  Hymenocallis Salisb. -- accepted -- spiderlily
  Hymenocallis bidentata Small -- not accepted
  Hymenocallis caribaea (L.) Herb. -- accepted -- Caribbean spiderlily
  Hymenocallis caroliniana (L.) Herb. -- not accepted -- Carolina spiderlily
  Hymenocallis caymanensis Herb. -- not accepted
  Hymenocallis choctawensis Traub -- accepted -- Choctaw spiderlily
  Hymenocallis collieri Small -- not accepted
  Hymenocallis coronaria (J. Le Conte) Kunth -- accepted -- cahaba-lily, Shoals spider-lily, shoals spiderlily
  Hymenocallis crassifolia Herb. -- accepted
  Hymenocallis declinata (Jacq.) M. Roem. -- not accepted
  Hymenocallis duvalensis Traub -- accepted -- Dixie spiderlily
  Hymenocallis eulae auct. non Shinners -- not accepted
  Hymenocallis eulae Shinners -- not accepted
  Hymenocallis expansa (Herb.) Herb. -- not accepted -- West Indian spiderlily
  Hymenocallis floridana (Raf.) C.V. Morton -- not accepted -- Florida spiderlily
  Hymenocallis floridana ssp. amplifolia Traub -- not accepted
  Hymenocallis franklinensis G. Lom. Sm., L.C. Anderson & Flory -- accepted -- Franklin spiderlily
  Hymenocallis galvestonensis (Herb.) Baker -- not accepted -- Galveston spiderlily
  Hymenocallis georgiana Traub -- not accepted
  Hymenocallis godfreyi G. Lom. Sm. & Darst -- accepted -- Godfrey's spiderlily
  Hymenocallis henryae Traub -- accepted -- Henry's spiderlily
  Hymenocallis henryae var. glaucifolia J.N. Henry & G. Lom. Sm. -- accepted -- Henry's spiderlily
  Hymenocallis henryae var. henryae Traub -- accepted -- Henry's spiderlily
  Hymenocallis humilis S. Watson -- not accepted
  Hymenocallis keyensis Small -- not accepted
  Hymenocallis kimballiae Small -- not accepted
  Hymenocallis laciniata Small -- not accepted
  Hymenocallis latifolia (Mill.) M. Roem. -- accepted -- perfumed spiderlily
  Hymenocallis liriosme (Raf.) Shinners -- accepted -- spiderlily, spring spiderlily
  Hymenocallis littoralis (Jacq.) Salisb. -- accepted -- beach spiderlily
  Hymenocallis moldenkiana Traub -- not accepted
  Hymenocallis occidentalis (J. Le Conte) Kunth -- accepted
  Hymenocallis occidentalis var. eulae (Shinners) G. Lom. Sm. & Flory -- accepted
  Hymenocallis occidentalis var. occidentalis (J. Le Conte) Kunth -- accepted
  Hymenocallis palmeri S. Watson -- accepted -- alligatorlily
  Hymenocallis palusvirensis Traub -- not accepted
  Hymenocallis puntagordensis Traub -- accepted -- Punta Gordo spiderlily
  Hymenocallis pygmaea Traub -- accepted
  Hymenocallis rotata (Ker Gawl.) Herb. -- accepted -- streambank spiderlily
  Hymenocallis speciosa (L. f. ex Salisb.) Salisb. -- accepted -- green-tinge spiderlily
  Hymenocallis traubii Moldenke -- not accepted
  Hymenocallis tridentata Small -- accepted
  Hypoxidaceae -- accepted
  Hypoxis L. -- accepted -- star-grass
  Hypoxis curtissii Rose -- accepted -- Curtis' star-grass
  Hypoxis decumbens L. -- not accepted
  Hypoxis hirsuta (L.) Coville -- accepted -- common goldstar
  Hypoxis hirsuta var. leptocarpa (Engelm. & A. Gray) Brackett -- not accepted
  Hypoxis juncea Sm. -- accepted -- fringed yellow star-grass
  Hypoxis kilimanjarica Baker -- accepted -- star-grass
  Hypoxis leptocarpa (Engelm. & A. Gray) Small -- not accepted
  Hypoxis longii Fernald -- not accepted -- star-grass
  Hypoxis mexicana Schult. & Schult. f. -- accepted -- Mexican yellow star-grass
  Hypoxis micrantha Pollard -- not accepted
  Hypoxis rigida Chapm. -- accepted -- stiff star-grass
  Hypoxis sessilis L. -- accepted -- glossyseed yellow star-grass
  Hypoxis wrightii (Baker) Brackett -- accepted -- Wright's star-grass
  Ipheion uniflorum (Lindl.) Raf. -- not accepted -- springstar
  Kniphofia Moench -- accepted -- redhot poker
  Kniphofia uvaria (L.) Oken -- accepted -- redhot poker
  Kruhsea streptopoides (Ledeb.) Kearney -- not accepted
  Lachenalia J. Jacq. ex Js. Murray -- accepted -- lachenalia
  Lachenalia reflexa Thunb. -- accepted
  Laothoe angustifolia (Kellogg) Greene -- not accepted
  Laothoe parviflora (S. Watson) Greene -- not accepted
  Laothoe pomeridiana (DC.) Raf. -- not accepted
  Laothoe purpurea (Brandegee) Greene -- not accepted
  Leopoldia comosa (L.) Parl. -- not accepted
  Leucocrinum Nutt. ex A. Gray -- accepted -- starlily
  Leucocrinum montanum Nutt. ex A. Gray -- accepted -- common starlily, star-lily
  Leucojum L. -- accepted -- snowflake
  Leucojum aestivum L. -- accepted -- summer snowflake
  Leucojum aestivum ssp. aestivum L. -- not accepted -- summer snowflake
  Leucojum aestivum ssp. pulchellum (Salisb.) Briq. -- not accepted -- summer snowflake
  Leucojum vernum L. -- accepted -- spring snowflake
  Liliaceae -- accepted
  Liliorhiza viridea (Kellogg) Kellogg -- not accepted
  Lilium L. -- accepted -- lily
  Lilium andinum Nutt. -- not accepted
  Lilium bolanderi S. Watson -- accepted -- Bolander's lily
  Lilium bulbiferum L. -- accepted -- orange lily
  Lilium camschatcense L. -- not accepted
  Lilium canadense L. -- accepted -- Canada lily
  Lilium canadense ssp. canadense L. -- not accepted -- Canada lily
  Lilium canadense ssp. editorum (Fernald) Wherry -- not accepted -- Canada lily
  Lilium canadense ssp. michiganense (Farw.) B. Boivin & Cody -- not accepted
  Lilium canadense ssp. superbum (L.) B. Boivin & Cody -- not accepted
  Lilium canadense ssp. superbum (L.) Baker -- not accepted
  Lilium canadense var. editorum Fernald -- not accepted
  Lilium canadense var. parviflorum Hook. -- not accepted
  Lilium canadense var. rubrum hort. ex T. Moore -- not accepted
  Lilium canadense var. umbelliferum (Farw.) B. Boivin -- not accepted
  Lilium candidum L. -- accepted -- Madonna lily
  Lilium carolinianum Michx., non Bosc ex Lam. -- not accepted
  Lilium catesbaei Walter -- accepted -- pine lily
  Lilium catesbaei ssp. asprellum Wherry -- not accepted -- pine lily
  Lilium catesbaei ssp. catesbaei Walter -- not accepted -- pine lily
  Lilium catesbaei var. longii Fernald -- not accepted
  Lilium columbianum Leichtlin ex Duch. -- accepted -- Columbia lily, Columbian lily
  Lilium concolor Salisb. -- accepted
  Lilium dauricum Ker Gawl. -- accepted
  Lilium fairchildii M.E. Jones -- not accepted -- Fairchild's lily
  Lilium formosanum A. Wallace -- accepted -- Formosa lily
  Lilium fortunofulgidum Roane & J.N. Henry -- not accepted
  Lilium fresnense (Eastw.) Eastw. -- not accepted
  Lilium gazarubrum Roane & J.N. Henry -- not accepted
  Lilium grayi S. Watson -- accepted -- Gray's lily
  Lilium henryi Baker -- accepted -- Henry's lily
  Lilium humboldtii Roezl & Leichtlin ex Duch. -- accepted -- Humboldt lily, Humboldt's lily
  Lilium humboldtii ssp. humboldtii Roezl & Leichtlin ex Duch. -- accepted -- Humboldt's lily
  Lilium humboldtii ssp. ocellatum (Kellogg) Thorne -- accepted -- Humboldt's lily
  Lilium humboldtii var. bloomerianum (Kellogg) Jeps. -- not accepted
  Lilium humboldtii var. ocellatum (Kellogg) Elwes -- not accepted
  Lilium iridollae M.G. Henry -- accepted -- Panhandle lily
  Lilium kelleyanum Lemmon -- accepted -- Kelley's lily
  Lilium kelloggii Purdy -- accepted -- Kellogg's lily
  Lilium lancifolium Thunb. -- accepted -- tiger lily
  Lilium longiflorum Thunb. -- accepted -- Easter lily
  Lilium maritimum Kellogg -- accepted -- coast lily
  Lilium martagon L. -- accepted -- martagon lily
  Lilium mary-henryae Roane & J.N. Henry -- not accepted
  Lilium michauxii Poir. -- accepted -- Carolina lily
  Lilium michiganense Farw. -- accepted -- Michigan lily
  Lilium michiganense var. uniflorum Farw. -- not accepted
  Lilium montanum A. Nelson -- not accepted
  Lilium nevadense Eastw. -- not accepted
  Lilium nevadense var. shastense Eastw. -- not accepted
  Lilium occidentale Purdy -- accepted -- western lily
  Lilium pardalinum Kellogg -- accepted -- leopard lily
  Lilium pardalinum ssp. pardalinum Kellogg -- accepted -- leopard lily
  Lilium pardalinum ssp. pitkinense (Beane & Vollmer) M.W. Skinner -- accepted -- Pitkin Marsh lily
  Lilium pardalinum ssp. shastense (Eastw.) M.W. Skinner -- accepted -- Shasta lily
  Lilium pardalinum ssp. vollmeri (Eastw.) M.W. Skinner -- accepted -- Vollmer's lily
  Lilium pardalinum ssp. wigginsii (Beane & Vollmer) M.W. Skinner -- accepted -- Wiggins' lily
  Lilium parryi S. Watson -- accepted -- lemon lily, Parry lily
  Lilium parryi var. kessleri Davidson -- not accepted
  Lilium parvum Kellogg -- accepted -- Sierra tiger lily, Sierra tigerlily
  Lilium pensylvanicum Ker Gawl. -- not accepted
  Lilium philadelphicum L. -- accepted -- wood lily
  Lilium philadelphicum var. andinum (Nutt.) Ker Gawl. -- not accepted -- wood lily
  Lilium philadelphicum var. montanum (A. Nelson) Wherry -- not accepted
  Lilium philadelphicum var. philadelphicum L. -- not accepted -- wood lily
  Lilium philippinense Baker -- accepted -- Philippine lily
  Lilium pitkinense Beane & Vollmer -- not accepted
  Lilium pudicum Pursh -- not accepted
  Lilium pyrophilum M.W. Skinner & Sorrie -- accepted -- sandhills lily
  Lilium regale E.H. Wilson -- accepted -- regal lily
  Lilium rubescens S. Watson -- accepted -- redwood lily
  Lilium superbum L. -- accepted -- turk's-cap lily
  Lilium superbum var. carolinianum (Michx.) Chapm. -- not accepted
  Lilium tigrinum Ker Gawl. -- not accepted
  Lilium umbellatum Pursh -- not accepted
  Lilium vollmeri Eastw. -- not accepted -- Vollmer's lily
  Lilium washingtonianum Kellogg -- accepted -- Washington lily
  Lilium washingtonianum ssp. purpurascens (Stearn) M.W. Skinner -- accepted -- Cascade lily
  Lilium washingtonianum ssp. washingtonianum Kellogg -- accepted -- Washington lily
  Lilium washingtonianum var. minor Purdy -- not accepted
  Lilium washingtonianum var. minus Purdy -- not accepted
  Lilium washingtonianum var. purpurascens Stearn -- not accepted -- Cascade lily
  Lilium washingtonianum var. washingtonianum Kellogg -- not accepted -- Washington lily
  Lilium wigginsii Beane & Vollmer -- not accepted -- Wiggins' lily
  Lilium X pseudograyi Grove (pro. sp.) -- accepted -- lily
  Liriope Lour. -- accepted -- lilyturf
  Liriope graminifolia (L.) Baker -- accepted -- lilyturf
  Liriope muscari (Decne.) L.H. Bailey -- accepted -- big blue lilyturf
  Liriope spicata (Thunb.) Lour. -- accepted -- creeping liriope
  Liriope spicatum (Thunb.) Lour. -- not accepted -- creeping lilyturf
  Lloydia Salisb. ex Rchb. -- accepted -- alplily
  Lloydia serotina (L.) Salisb. ex Rchb. -- accepted -- alpine lily, alplily, common alplily
  Lloydia serotina ssp. flava Calder & Roy L. Taylor -- not accepted -- common alplily
  Lloydia serotina var. flava (Calder & Roy L. Taylor) B. Boivin -- accepted -- alp lily, alpine lily
  Lloydia serotina var. serotina (L.) Salisb. ex Rchb. -- accepted -- common alplily
  Lophiola Ker Gawl. -- accepted -- lophiola
  Lophiola americana (Pursh) Alph. Wood -- not accepted
  Lophiola aurea Ker Gawl. -- accepted -- goldencrest
  Lophiola septentrionalis Fernald -- not accepted
  Lycoris Herb. -- accepted -- lycoris
  Lycoris radiata (L'Hér.) Herb. -- accepted -- red spider lily
  Lycoris squamigera Maxim. -- accepted -- resurrection lily
  Macroscapa volubilis Kellogg -- not accepted
  Maianthemum F.H. Wigg. -- accepted -- beadruby, mayflower, Solomon's-seal
  Maianthemum amplexicaule (Nutt.) W.A. Weber -- not accepted
  Maianthemum bifolium ssp. kamtschaticum (J.F. Gmel.) A.E. Murray -- not accepted
  Maianthemum bifolium var. kamtschaticum (J.F. Gmel.) Jeps. -- not accepted
  Maianthemum canadense Desf. -- accepted -- Canada mayflower, false lily-of-the-valley, twoleaved Solomonseal
  Maianthemum canadense var. interius Fernald -- not accepted
  Maianthemum canadense var. pubescens R.R. Gates & Ehlers -- not accepted
  Maianthemum dilatatum (Alph. Wood) A. Nelson & J.F. Macbr. -- accepted -- false lily of the valley, false lily of the vally
  Maianthemum kamtschaticum (J.F. Gmel.) Nakai -- not accepted
  Maianthemum racemosum (L.) Link -- accepted -- false Solomon's-seal, feathery false lily of the valley, feathery false lily of the vally, feathery false Solomon's seal, feathery false Solomon's-seal
  Maianthemum racemosum ssp. amplexicaule (Nutt.) LaFrankie -- accepted -- feathery false lily of the valley, feathery false lily of the vally, western Solomon's seal, western Solomon's-seal
  Maianthemum racemosum ssp. racemosum (L.) Link -- accepted -- false Solomon's-seal, feather Solomon's seal, feathery false lily of the valley, feathery false Solomon's-seal
  Maianthemum racemosum var. amplexicaule (Nutt.) Dorn -- not accepted
  Maianthemum stellatum (L.) Link -- accepted -- false Solomon's seal, little false Solomon's-seal, star false Solomon's-seal, star-flower Solomon's-seal, starry false lily of the valley, starry false Solomon's seal, starry false Solomon's-seal, starry Solomon's-seal
  Maianthemum trifolium (L.) Sloboda -- accepted -- threeleaf false lily of the valley, threeleaf false lily of the vally
  Manfreda Salisb. -- accepted -- tuberose
  Manfreda longiflora (Rose) Verh-Will. -- accepted -- Amole de río, longflower tuberose, Runyon huaco
  Manfreda maculosa (Hook.) Rose -- accepted -- Amole de culebra, spice lily
  Manfreda sileri Verh-Will. -- accepted -- Siler's tuberose
  Manfreda tamazunchalensis Matuda -- not accepted
  Manfreda tigrina (Engelm.) Small -- not accepted
  Manfreda variegata (Jacobi) Rose -- accepted -- Amole akayman, mottled tuberose
  Manfreda virginica (L.) Salisb. ex Rose -- accepted -- Amole de Virginia, false aloe
  Manfreda virginica var. tigrina (Engelm.) Rose -- not accepted
  Manfreda xilitlensis Matuda -- not accepted
  Mariposa simulans Hoover -- not accepted
  Medeola L. -- accepted -- Indian cucumber
  Medeola virginiana L. -- accepted -- Indian cucumber
  Melanthiaceae -- accepted
  Melanthium L. -- accepted -- bunchflower
  Melanthium dispersum Small -- not accepted
  Melanthium hybridum Walter -- not accepted
  Melanthium latifolium Desr. -- not accepted -- slender bunchflower
  Melanthium parviflorum (Michx.) S. Watson -- not accepted -- Appalachian bunchflower
  Melanthium virginicum L. -- not accepted -- Virginia bunchflower
  Melanthium woodii (J.W. Robbins ex Alph. Wood) Bodkin -- not accepted -- Wood's bunchflower
  Milla Cav. -- accepted -- milla
  Milla biflora Cav. -- accepted -- Mexican star, Mexican-star
  Milla uniflora (Lindl.) Graham -- not accepted
  Molineria Colla -- accepted
  Molineria capitulata (Lour.) Herb. -- accepted
  Muilla S. Watson ex Benth. -- accepted -- muilla
  Muilla clevelandii (S. Watson) Hoover -- not accepted -- San Diego goldenstar
  Muilla coronata Greene -- accepted -- crowned muilla
  Muilla maritima (Torr.) S. Watson -- accepted -- sea muilla
  Muilla serotina Greene -- not accepted
  Muilla tenuis Congdon -- not accepted
  Muilla transmontana Greene -- accepted -- inland muilla
  Muscari Mill. -- accepted -- grape hyacinth, grapehyacinth
  Muscari armeniacum Leichtlin ex Baker -- accepted -- Armenian grape hyacinth
  Muscari atlanticum Boiss. & Reut. -- not accepted
  Muscari botryoides (L.) Mill. -- accepted -- common grape hyacinth
  Muscari comosum (L.) Mill. -- accepted -- tassel grape hyacinth
  Muscari neglectum Guss. ex Ten. -- accepted -- starch grape hyacinth, starch grapehyacinth
  Muscari racemosum (L.) Lam. & DC. -- not accepted
  Narcissus L. -- accepted -- daffodil, narcissus
  Narcissus assoanus Dufour -- accepted -- rushleaf jonquil
  Narcissus barrii hort. ex Brub. -- not accepted
  Narcissus biflorus Curtis -- not accepted
  Narcissus bulbocodium L. -- accepted -- petticoat daffodil
  Narcissus jonquilla L. -- accepted -- jonquil
  Narcissus juncifolius auct. non Lag. -- not accepted
  Narcissus papyraceus Ker Gawl. -- accepted -- paperwhite narcissus
  Narcissus poetaz hort. ex L.H. Bailey -- not accepted
  Narcissus poeticus L. -- accepted -- poet's narcissus
  Narcissus pseudonarcissus L. -- accepted -- common daffodil, daffodil
  Narcissus tazetta L. -- accepted -- cream narcissus
  Narcissus X incomparabilis Mill. (pro. sp.) -- accepted -- nonesuch daffodil
  Narcissus X medioluteus Mill. (pro. sp.) -- accepted -- primrose peerless
  Narcissus X odorus L. (pro. sp.) -- accepted -- Campernelle jonquil
  Nartheciaceae -- accepted
  Narthecium Huds. -- accepted -- asphodel
  Narthecium americanum Ker Gawl. -- accepted -- bog asphodel, yellow asphodel
  Narthecium californicum Baker -- accepted -- California bog asphodel
  Narthecium glutinosum Michx. -- not accepted
  Narthecium ossifragum var. americanum (Ker Gawl.) A. Gray -- not accepted
  Narthecium pusillum Michx. -- not accepted
  Nerine Herb. -- accepted -- nerine
  Nerine bowdenii W. Watson -- accepted
  Niobe caerulea (Andrews) Nash -- not accepted
  Niobe coerulea (Andrews) Nash -- not accepted
  Niobe japonica (Thunb.) Nash -- not accepted
  Nolina Michx. -- accepted -- beargrass
  Nolina affinis Trel. -- not accepted -- Palmilla fina
  Nolina arenicola Correll -- accepted -- sand sacahuista, Trans-Pecos beargrass
  Nolina atopocarpa Bartlett -- accepted -- Florida beargrass
  Nolina bigelovii (Torr.) S. Watson -- accepted -- Bigelow nolina, Bigelow's nolina, Palmilla de culebra
  Nolina bigelovii var. parryi (S. Watson) L.D. Benson -- not accepted
  Nolina bigelovii var. wolfii (Munz) L.D. Benson -- not accepted
  Nolina brittoniana Nash -- accepted -- Britton's beargrass
  Nolina cismontana Dice -- accepted -- chaparral beargrass, Peninsular beargrass
  Nolina erumpens (Torr.) S. Watson -- accepted -- beargrass, foothill beargrass, Palmilla de Chihuahua
  Nolina georgiana Michx. -- accepted -- Georgia beargrass
  Nolina greenei S. Watson ex Trel. -- accepted -- woodland beargrass
  Nolina interrata Gentry -- accepted -- Dehesa beargrass
  Nolina lindheimeriana (Scheele) S. Watson -- accepted -- devil's shoestring, lindheimer nolina
  Nolina micrantha I.M. Johnst. -- accepted -- chaparral beargrass
  Nolina microcarpa S. Watson -- accepted -- Palmilla sacahuista, sacahuista
  Nolina parryi S. Watson -- accepted -- Palmilla de Parry, Parry's beargrass, Parry's sacahuista
  Nolina parryi ssp. wolfii Munz -- not accepted
  Nolina texana S. Watson -- accepted -- Palmilla texana, sacahuista, Texas sacahuista
  Nolina texana var. compacta (Trel.) I.M. Johnst. -- not accepted
  Nolina wolfii (Munz) Munz -- not accepted
  Nothoscordum Kunth -- accepted -- false garlic
  Nothoscordum bivalve (L.) Britton -- accepted -- crowpoison
  Nothoscordum borbonicum Kunth -- accepted -- fragrant false garlic
  Nothoscordum fragrans (Vent.) Kunth -- not accepted
  Nothoscordum fragrans auct. non (Vent.) Kunth -- not accepted
  Nothoscordum gracile (Aiton) Stearn -- accepted -- slender false garlic
  Nothoscordum gracile Stearn, non (Aiton) Stearn -- not accepted
  Nothoscordum inodorum (Aiton) G. Nicholson -- not accepted -- false garlic
  Nothoscordum inodorum auct. non (Aiton) G. Nicholson -- not accepted
  Nothoscordum striatum Kunth -- not accepted
  Nothoscordum texanum M.E. Jones -- not accepted -- false garlic, Texas false garlic
  Oakesiella floridana (Chapm.) Small -- not accepted
  Oakesiella puberula (Michx.) Small -- not accepted
  Oakesiella sessilifolia (L.) Small -- not accepted
  Oceanorus leimanthoides (A. Gray) Small -- not accepted
  Ochrocodon pudicus (Pursh) Rydb. -- not accepted
  Odontostomum Torr. -- accepted -- Hartweg's doll's-lily
  Odontostomum hartwegii Torr. -- accepted -- Hartweg's doll's-lily
  Ophiopogon Ker Gawl. -- accepted -- ophiopogon
  Ophiopogon jaburan (Siebold) Lodd. -- accepted -- lilyturf
  Ophiopogon japonicus (L. f.) Ker Gawl. -- accepted -- dwarf lilyturf
  Ornithogalum L. -- accepted -- star of Bethlehem
  Ornithogalum bivalve L. -- not accepted
  Ornithogalum caudatum Aiton -- accepted -- false seaonion
  Ornithogalum divaricatum Lindl. -- not accepted
  Ornithogalum fistulosum Ramond ex DC. -- not accepted
  Ornithogalum hirsutum L. -- not accepted
  Ornithogalum ixioides W.T. Aiton -- not accepted
  Ornithogalum nutans L. -- accepted -- drooping star of Bethlehem
  Ornithogalum pyrenaicum L. -- accepted -- Pyrenees star of Bethlehem
  Ornithogalum umbellatum L. -- accepted -- Pyrenees Star of Bethlehem, sleepydick, Star-of-Bethlehem
  Oxytria albiflora (Raf.) Pollard -- not accepted
  Oxytria crocea (Michx.) Raf. -- not accepted
  Oxytria texana (Scheele) Pollard -- not accepted
  Pancratium L. -- accepted -- pancratium
  Pancratium caribaeum L. -- not accepted
  Pancratium carolinianum L. -- not accepted
  Pancratium declinatum Jacq. -- not accepted -- false spiderlily
  Pancratium expansum Herb. -- not accepted
  Pancratium latifolium Mill. -- not accepted
  Pancratium littorale Jacq. -- not accepted -- pancratium
  Pancratium maritimum L. -- accepted -- sea-daffodil
  Pancratium rotatum Ker Gawl. -- not accepted
  Pancratium speciosum L. f. ex Salisb. -- not accepted
  Phalangium quamash Pursh -- not accepted
  Phormium J.R. Forst. & G. Forst. -- accepted -- phormium
  Phormium tenax J.R. Forst. & G. Forst. -- accepted -- New Zealand flax, New Zealand hemp
  Pleea Michx. -- accepted -- pleea
  Pleea tenuifolia Michx. -- accepted -- rush featherling
  Pleomele Salisb. -- not accepted -- hala pepe
  Pleomele aurea (H. Mann) N.E. Br. -- not accepted -- golden hala pepe, hala pepe
  Pleomele auwahiensis H. St. John -- accepted -- Maui hala pepe
  Pleomele fernaldii H. St. John -- not accepted -- hala pepe, Lanai hala pepe
  Pleomele forbesii O. Deg. -- not accepted -- hala pepe, Waianae Range hala pepe
  Pleomele halaapepe H. St. John -- not accepted
  Pleomele halapepe H. St. John -- not accepted -- royal hala pepe
  Pleomele hawaiiensis O. Deg. & I. Deg. -- not accepted -- hala pepe, Hawai'i hala pepe
  Polianthes L. -- accepted -- polianthes
  Polianthes lata (Shinners) Shinners -- not accepted
  Polianthes maculosa (Hook.) Shinners -- not accepted
  Polianthes runyonii Shinners -- not accepted
  Polianthes tuberosa L. -- accepted -- Nardo común, tuberose
  Polianthes variegata (Jacobi) Shinners -- not accepted
  Polianthes virginica (L.) Shinners -- not accepted
  Polygonatum Mill. -- accepted -- Solomon's seal
  Polygonatum biflorum (Walter) Elliott -- accepted -- King Solomon's seal, King Solomon's-seal, smooth Solomon's seal, Solomon's seal
  Polygonatum biflorum var. biflorum (Walter) Elliott -- not accepted -- king Solomon's seal, smooth Solomon's seal
  Polygonatum biflorum var. commutatum (Schult. f.) Morong -- not accepted -- king Solomon's seal, King Solomon's-seal, smooth Solomon's seal
  Polygonatum biflorum var. hebetifolium R.R. Gates -- not accepted -- smooth Solomon's seal
  Polygonatum biflorum var. melleum (Farw.) R.P. Ownbey -- not accepted -- smooth Solomon's seal
  Polygonatum biflorum var. necopinum R.P. Ownbey -- not accepted -- smooth Solomon's seal
  Polygonatum canaliculatum auct. non (Muhl. ex Willd.) Pursh -- not accepted
  Polygonatum cobrense (Wooton & Standl.) R.R. Gates -- not accepted -- McKittrick's Solomon's seal
  Polygonatum commutatum (Schult. f.) A. Dietr. -- not accepted
  Polygonatum hirtum (Bosc ex Poir.) Pursh -- not accepted -- broadleaf Solomon's seal
  Polygonatum latifolium (Jacq.) Desf. -- accepted -- broadleaf Solomon's seal
  Polygonatum melleum Farw. -- not accepted
  Polygonatum multiflorum (L.) All. -- accepted -- Eurasian Solomon's seal
  Polygonatum pubescens (Willd.) Pursh -- accepted -- hairy Solomon's seal
  Proiphys Herb. -- accepted
  Proiphys amboinensis (L.) Herb. -- accepted
  Prosartes D. Don -- accepted
  Prosartes hookeri Torr. -- accepted -- drops-of-gold
  Prosartes hookeri var. hookeri Torr. -- not accepted -- drops-of-gold
  Prosartes hookeri var. oregana (S. Watson) Kartesz -- not accepted -- Oregon drops of gold
  Prosartes hookeri var. parvifolia (S. Watson) Kartesz -- not accepted -- drops of gold
  Prosartes hookeri var. trachyandra (Torr.) Kartesz -- not accepted -- drops of gold
  Prosartes lanuginosa (Michx.) D. Don -- accepted -- yellow fairybells
  Prosartes maculata (Buckley) A. Gray -- accepted -- yellow mandarin
  Prosartes menziesii D. Don -- not accepted
  Prosartes oregana S. Watson -- not accepted
  Prosartes parvifolia S. Watson -- not accepted
  Prosartes smithii (Hook.) Utech, Shinwari & Kawano -- accepted -- largeflower fairybells
  Prosartes trachyandra Torr. -- not accepted
  Prosartes trachycarpa S. Watson -- accepted -- roughfruit fairybells
  Pseudotrillium S.B. Farmer -- accepted -- false trillium, pseudotrillium
  Pseudotrillium rivale (S. Watson) S.B. Farmer -- accepted -- brook wakerobin
  Quamasia azurea A. Heller -- not accepted
  Quamasia hyacinthina (Raf.) Britton -- not accepted
  Quamasia walpolei Piper -- not accepted
  Runyonia longiflora Rose -- not accepted
  Salomonia cobrensis Wooton & Standl. -- not accepted
  Samuela carnerosana auct. non Trel. -- not accepted
  Samuela faxoniana Trel. -- not accepted
  Sansevieria Thunb. -- accepted -- sansevieria
  Sansevieria cylindrica Bojer ex Hook. -- accepted -- African bowstring hemp
  Sansevieria fasciata Cornu ex Gérôme & Labroy -- accepted
  Sansevieria hyacinthoides (L.) Druce -- accepted -- bowstring hemp, iguanatail
  Sansevieria longiflora Sims -- accepted -- Florida bowstring hemp
  Sansevieria metallica hort. ex Gérôme & Labroy -- not accepted
  Sansevieria roxburghiana Schult. & Schult. f. -- accepted -- Indian bowstring hemp
  Sansevieria senegambica Baker -- accepted -- bowstring hemp
  Sansevieria thyrsiflora Thunb. -- not accepted
  Sansevieria trifasciata hort. ex Prain -- accepted -- viper's bowstring hemp
  Scadoxus Raf. -- accepted -- scadoxus
  Scadoxus multiflorus (Martyn) Raf. -- accepted
  Scadoxus multiflorus ssp. katherinae (Baker) Friis & Nordal -- accepted -- Katherine-wheel
  Scadoxus multiflorus ssp. multiflorus (Martyn) Raf. -- accepted -- blood-flower
  Schoenocaulon A. Gray -- accepted -- feathershank
  Schoenocaulon drummondii A. Gray -- not accepted -- green feathershank
  Schoenocaulon dubium (Michx.) Small -- accepted -- Florida feathershank
  Schoenocaulon ghiesbreghtii Greenm. -- accepted -- green feathershank
  Schoenocaulon texanum Scheele -- accepted -- Texas feathershank
  Schoenolirion Torr. ex Durand -- accepted -- sunnybell
  Schoenolirion albiflorum (Raf.) R.R. Gates -- accepted -- white sunnybell
  Schoenolirion album Durand -- not accepted
  Schoenolirion bracteosum (S. Watson) Jeps. -- not accepted
  Schoenolirion croceum (Michx.) Alph. Wood -- accepted -- yellow sunnybell
  Schoenolirion elliottii Feay ex A. Gray -- not accepted
  Schoenolirion texanum (Scheele) A. Gray -- not accepted
  Schoenolirion wrightii Sherman -- accepted -- Texas sunnybell
  Schoenoprasum lineare Kunth -- not accepted
  Scilla L. -- accepted -- scilla
  Scilla cretica (Boiss. & Heldr.) Speta -- accepted
  Scilla non-scripta (L.) Hoffmanns. & Link -- not accepted
  Scilla siberica Haw. -- accepted -- Siberian squill
  Scoliopus Torr. -- accepted -- fetid adderstongue
  Scoliopus bigelovii Torr. -- accepted -- California fetid adderstongue
  Scoliopus hallii S. Watson -- accepted -- Oregon fetid adderstongue
  Seubertia crocea Alph. Wood -- not accepted
  Smilacina amplexicaulis Nutt. -- not accepted
  Smilacina amplexicaulis var. glabra J.F. Macbr. -- not accepted
  Smilacina amplexicaulis var. jenkinsii B. Boivin -- not accepted
  Smilacina amplexicaulis var. ovata B. Boivin -- not accepted
  Smilacina borealis var. uniflora Menzies ex Schult. -- not accepted
  Smilacina ciliata Desf. -- not accepted
  Smilacina flexicaulis Wender -- not accepted
  Smilacina liliacea (Greene) F.L. Wynd -- not accepted
  Smilacina racemosa (L.) Desf. -- not accepted
  Smilacina racemosa var. amplexicaulis (Nutt.) S. Watson -- not accepted
  Smilacina racemosa var. brachystyla L.F. Hend. -- not accepted
  Smilacina racemosa var. cylindrata Fernald -- not accepted
  Smilacina racemosa var. glabra (J.F. Macbr.) H. St. John -- not accepted
  Smilacina racemosa var. jenkinsii (B. Boivin) B. Boivin -- not accepted
  Smilacina racemosa var. lanceolata B. Boivin -- not accepted
  Smilacina racemosa var. typica Fernald -- not accepted
  Smilacina sessilifolia Nutt. ex Baker -- not accepted
  Smilacina stellata (L.) Desf. -- not accepted
  Smilacina stellata var. crassa Vict. -- not accepted
  Smilacina stellata var. mollis Farw. -- not accepted
  Smilacina stellata var. sessilifolia (Baker) L.F. Hend. -- not accepted
  Smilacina stellata var. sylvatica Vict. & J.Rousseau -- not accepted
  Smilacina trifolia (L.) Desf. -- not accepted
  Sprekelia Heist. -- accepted -- Jacobean lily
  Sprekelia formosissima (L.) Herb. -- accepted -- Jacobean lily
  Stenanthella occidentalis (A. Gray) Rydb. -- not accepted
  Stenanthium (A. Gray) Kunth -- accepted -- featherbells
  Stenanthium densum (Desr.) Zomlefer & Judd -- accepted -- Osceola's plume
  Stenanthium diffusum Wofford -- accepted -- rockhouse featherbells
  Stenanthium gramineum (Ker Gawl.) Morong -- accepted -- eastern featherbells
  Stenanthium gramineum var. gramineum (Ker Gawl.) Morong -- not accepted -- eastern featherbells
  Stenanthium gramineum var. micranthum Fernald -- not accepted -- eastern featherbells
  Stenanthium gramineum var. robustum (S. Watson) Fernald -- not accepted -- eastern featherbells
  Stenanthium leimanthoides (A. Gray) Zomlefer & Judd -- accepted -- pine barren deathcamas
  Stenanthium occidentale A. Gray -- not accepted -- western featherbells
  Stenanthium robustum S. Watson -- not accepted
  Stenomesson Herb. -- accepted -- stenomesson
  Stenomesson variegatum (Ruiz & Pav.) J.F. Macbr. -- accepted
  Sternbergia Waldst. & Kit. -- accepted -- winter daffodil
  Sternbergia lutea (L.) Ker Gawl. ex Spreng. -- accepted -- winter daffodil
  Streptopus Michx. -- accepted -- twisted stalk, twistedstalk
  Streptopus amplexifolius (L.) DC. -- accepted -- clasping twistedstalk, claspleaf twistedstalk, twisted stalk
  Streptopus amplexifolius ssp. americanus (Schult. & Schult. f.) Á. Löve & D. Löve -- not accepted
  Streptopus amplexifolius ssp. papillatus (Ohwi) Á. Löve & D. Löve -- not accepted
  Streptopus amplexifolius var. americanus Schult. & Schult. f. -- not accepted
  Streptopus amplexifolius var. amplexifolius (L.) DC. -- not accepted -- American twistedstalk, claspleaf twistedstalk
  Streptopus amplexifolius var. chalazatus Fassett -- not accepted -- tubercle twistedstalk
  Streptopus amplexifolius var. denticulatus Fassett -- not accepted
  Streptopus amplexifolius var. grandiflorus Fassett -- not accepted
  Streptopus amplexifolius var. oreopolus (Fernald) Fassett -- not accepted
  Streptopus amplexifolius var. papillatus Ohwi -- not accepted -- claspleaf twistedstalk
  Streptopus curvipes Vail -- not accepted
  Streptopus fassettii Á. Löve & D. Löve -- not accepted
  Streptopus lanceolatus (Aiton) Reveal -- accepted -- twistedstalk
  Streptopus lanceolatus var. curvipes (Vail) Reveal -- accepted -- twistedstalk
  Streptopus lanceolatus var. lanceolatus (Aiton) Reveal -- accepted -- twistedstalk
  Streptopus lanceolatus var. longipes (Fernald) Reveal -- accepted -- twistedstalk
  Streptopus lanceolatus var. roseus (Michx.) Reveal -- accepted -- twistedstalk
  Streptopus lanuginosus Michx. -- not accepted
  Streptopus roseus Michx. -- not accepted
  Streptopus roseus ssp. curvipes (Vail) Hultén -- not accepted
  Streptopus roseus ssp. longipes (Fernald) Á. Löve & D. Löve -- not accepted
  Streptopus roseus var. curvipes (Vail) Fassett -- not accepted
  Streptopus roseus var. longipes (Fernald) Fassett -- not accepted
  Streptopus roseus var. perspectus Fassett -- not accepted
  Streptopus streptopoides (Ledeb.) Frye & Rigg -- accepted -- small twistedstalk
  Streptopus streptopoides ssp. brevipes (Baker) Calder & Roy L. Taylor -- not accepted
  Streptopus streptopoides ssp. streptopoides (Ledeb.) Frye & Rigg -- not accepted -- small twistedstalk
  Streptopus streptopoides var. brevipes (Baker) Fassett -- not accepted -- small twistedstalk
  Streptopus X oreopolus Fernald (pro. sp.) -- accepted -- twistedstalk
  Tecophilaeaceae -- accepted
  Tofieldia Huds. -- accepted -- false asphodel, tofieldia
  Tofieldia coccinea Richardson -- accepted -- northern false-asphodel, tofieldie écarlate
  Tofieldia glabra Nutt. -- accepted -- smooth bog-asphodel, smooth tofieldia
  Tofieldia glutinosa (Michx.) Pers. -- not accepted -- sticky false asphodel, sticky tofieldia
  Tofieldia glutinosa ssp. absona C.L. Hitchc. -- not accepted -- Priest Lake tofieldia
  Tofieldia glutinosa ssp. brevistyla C.L. Hitchc. -- not accepted -- sticky tofieldia
  Tofieldia glutinosa ssp. glutinosa (Michx.) Pers. -- not accepted -- sticky tofieldia
  Tofieldia glutinosa ssp. montana C.L. Hitchc. -- not accepted -- sticky tofieldia, tall tofieldia
  Tofieldia glutinosa ssp. occidentalis (S. Watson) C.L. Hitchc. -- not accepted -- western tofieldia
  Tofieldia glutinosa var. absona (C.L. Hitchc.) R.J. Davis -- not accepted
  Tofieldia glutinosa var. brevistyla (C.L. Hitchc.) C.L. Hitchc. -- not accepted
  Tofieldia glutinosa var. intermedia (Rydb.) B. Boivin -- not accepted
  Tofieldia glutinosa var. montana (C.L. Hitchc.) R.J. Davis -- not accepted
  Tofieldia glutinosa var. occidentalis (S. Watson) C.L. Hitchc. -- not accepted
  Tofieldia occidentalis S. Watson -- not accepted
  Tofieldia palustris auct. non Huds. -- not accepted
  Tofieldia pusilla (Michx.) Pers. -- accepted -- Scotch false asphodel
  Tofieldia racemosa (Walter) Britton, Sterns & Poggenb. -- not accepted -- coastal false asphodel
  Tofieldia racemosa var. glutinosa (Michx.) H.E. Ahles -- not accepted
  Tofieldia tenuifolia (Michx.) Utech -- not accepted
  Tofieldiaceae -- accepted
  Tortipes amplexifolius (L.) Small -- not accepted
  Tovaria trifolia (L.) Neck. ex Baker -- not accepted
  Toxicoscordion Rydb. -- accepted -- deathcamas
  Toxicoscordion brevibracteatus (M.E. Jones) R.R. Gates -- accepted -- desert deathcamas
  Toxicoscordion exaltatum (Eastw.) A. Heller -- accepted -- giant deathcamas
  Toxicoscordion fontanum (Eastw.) Zomlefer & Judd -- accepted -- smallflower deathcamas
  Toxicoscordion fremontii (Torr.) Rydb. -- accepted -- Fremont's deathcamas
  Toxicoscordion gramineum (Rydb.) Rydb. -- not accepted
  Toxicoscordion micranthum (Eastw.) A. Heller -- accepted -- smallflower deathcamas
  Toxicoscordion nuttallii (A. Gray) Rydb. -- accepted -- Nuttall's deathcamas
  Toxicoscordion paniculatum (Nutt.) Rydb. -- accepted -- foothill deathcamas
  Toxicoscordion venenosum (S. Watson) Rydb. -- accepted -- meadow deathcamas
  Toxicoscordion venenosum var. gramineum (Rydb.) Brasher -- accepted -- grassy deathcamas
  Toxicoscordion venenosum var. venenosum (S. Watson) Rydb. -- accepted -- meadow deathcamas
  Tracyanthus angustifolius (Michx.) Small -- not accepted
  Triantha (Nutt.) Baker -- accepted
  Triantha glutinosa (Michx.) Baker -- accepted -- sticky tofieldia
  Triantha occidentalis (S. Watson) R.R. Gates -- accepted -- western false asphodel
  Triantha occidentalis ssp. brevistyla (C.L. Hitchc.) Packer -- accepted -- sticky tofieldia
  Triantha occidentalis ssp. montana (C.L. Hitchc.) Packer -- accepted -- sticky tofieldia
  Triantha occidentalis ssp. occidentalis (S. Watson) R.R. Gates -- accepted -- western false asphodel
  Triantha racemosa (Walter) Small -- accepted -- coastal false asphodel
  Tricyrtis Wall. -- accepted -- tricyrtis
  Tricyrtis hirta (Thunb.) Hook. -- accepted -- toadlily
  Trillium L. -- accepted -- trillium
  Trillium albidum J.D. Freeman -- accepted -- giant white wakerobin
  Trillium angustipetalum (Torr.) J.D. Freeman -- accepted -- narrowpetal wakerobin
  Trillium catesbaei Elliott -- accepted -- bashful wakerobin
  Trillium cernuum L. -- accepted -- whip-poor-will flower, whip-poor-will-flower
  Trillium cernuum var. macranthum Eames & Wiegand -- not accepted
  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 chloropetalum var. giganteum (Hook. & Arn.) Munz -- accepted -- giant wakerobin
  Trillium cuneatum Raf. -- accepted -- little sweet Betsy
  Trillium cuneatum var. luteum (Muhl.) H.E. Ahles -- not accepted
  Trillium decipiens J.D. Freeman -- accepted -- Chattahoochee River wakerobin
  Trillium declinatum auct. non (A. Gray) Gleason -- not accepted
  Trillium decumbens Harb. -- accepted -- trailing wakerobin
  Trillium discolor Wray ex Hook. -- accepted -- mottled wakerobin
  Trillium erectum L. -- accepted -- red trillium
  Trillium erectum var. album Pursh -- not accepted
  Trillium erectum var. blandum Jennison -- not accepted
  Trillium erectum var. declinatum auct. non A. Gray -- not accepted
  Trillium erectum var. flavum Torr. -- not accepted
  Trillium erectum var. sulcatum Barksd. -- not accepted
  Trillium erectum var. vaseyi (Harb.) H.E. Ahles -- not accepted
  Trillium flexipes Raf. -- accepted -- nodding wakerobin
  Trillium foetidissimum J.D. Freeman -- accepted -- Mississippi River wakerobin
  Trillium giganteum (Hook. & Arn.) A. Heller -- not accepted
  Trillium gleasonii auct. non Fernald -- not accepted
  Trillium gracile J.D. Freeman -- accepted -- Sabine River wakerobin
  Trillium grandiflorum (Michx.) Salisb. -- accepted -- great white trillium, snow trillium, white trillium, white wakerobin
  Trillium hugeri Small -- not accepted
  Trillium kurabayashii J.D. Freeman -- accepted -- giant purple wakerobin
  Trillium lanceolatum (S. Watson) Boykin ex Small -- not accepted
  Trillium lancifolium Raf. -- accepted -- lanceleaf wakerobin
  Trillium ludovicianum Harb. -- accepted -- Louisiana wakerobin
  Trillium luteum (Muhl.) Harb. -- accepted -- yellow wakerobin
  Trillium maculatum Raf. -- accepted -- spotted wakerobin
  Trillium nivale Riddell -- accepted -- dwarf white trillium, dwarf white wakerobin, snow trillium
  Trillium oostingii Gaddy -- accepted -- Oosting's trillium
  Trillium ovatum Pursh -- accepted -- Pacific trillium
  Trillium ovatum ssp. oettingeri Munz & Thorne -- not accepted -- Oettinger's trillium
  Trillium ovatum ssp. ovatum Pursh -- not accepted -- Pacific trillium
  Trillium ovatum var. oettingeri (Munz & Thorne) F.W. Case -- accepted -- Oettinger's trillium
  Trillium ovatum var. ovatum Pursh -- accepted -- Pacific trillium
  Trillium ozarkanum E.J. Palmer & Steyerm. -- not accepted
  Trillium parviflorum V.G. Soukup -- accepted -- smallflower wakerobin
  Trillium persistens Duncan -- accepted -- persistent trillium, persistent wakerobin
  Trillium petiolatum Pursh -- accepted -- Idaho trillium
  Trillium pusillum Michx. -- accepted -- dwarf wakerobin
  Trillium pusillum var. monticulum Bodkin & Reveal -- not accepted
  Trillium pusillum var. ozarkanum (E.J. Palmer & Steyerm.) Steyerm. -- accepted -- Ozark trillium, Ozark wakerobin
  Trillium pusillum var. pusillum Michx. -- accepted -- dwarf wakerobin
  Trillium pusillum var. texanum (Buckley) C.F. Reed -- not accepted
  Trillium pusillum var. texanum (Buckley) Reveal & C.R. Broome -- not accepted -- Texas trillium
  Trillium pusillum var. virginianum Fernald -- accepted -- Virginia trillium, Virginia wakerobin
  Trillium recurvatum Beck -- accepted -- bloody butcher, prairie trillium
  Trillium recurvatum ssp. lanceolatum (S. Watson) E. Murray -- not accepted
  Trillium reliquum J.D. Freeman -- accepted -- Confederate wakerobin, relict trillium
  Trillium rivale S. Watson -- not accepted -- brook wakerobin
  Trillium rugelii Rendle -- accepted -- illscented wakerobin
  Trillium sessile L. -- accepted -- toadshade
  Trillium sessile ssp. giganteum (Hook. & Arn.) E. Murray -- not accepted
  Trillium sessile var. angustipetalum Torr. -- not accepted
  Trillium sessile var. chloropetalum Torr. -- not accepted
  Trillium sessile var. giganteum Hook. & Arn. -- not accepted
  Trillium simile Gleason -- accepted -- jeweled wakerobin
  Trillium stamineum Harb. -- accepted -- Blue Ridge wakerobin
  Trillium sulcatum T.S. Patrick -- accepted -- furrowed wakerobin
  Trillium texanum Buckley -- accepted -- Texas wakerobin
  Trillium underwoodii Small -- accepted -- longbract wakerobin
  Trillium undulatum Willd. -- accepted -- painted trillium
  Trillium vaseyi Harb. -- accepted -- sweet wakerobin
  Trillium virginianum (Fernald) C.F. Reed -- not accepted
  Trillium viride Beck -- accepted -- wood wakerobin
  Trillium viride var. luteum (Muhl.) Gleason -- not accepted
  Trillium viridescens Nutt. -- accepted -- tapertip wakerobin
  Tristagma Poepp. -- accepted -- springstar
  Tristagma uniflorum (Lindl.) Traub -- accepted -- springstar
  Triteleia Douglas ex Lindl. -- accepted -- triplet lily, tripletlily, triteleia
  Triteleia angustiflora A. Heller -- not accepted
  Triteleia bicolor (Suksd.) A. Heller -- not accepted
  Triteleia bridgesii (S. Watson) Greene -- accepted -- Bridges' brodiaea
  Triteleia clementina Hoover -- accepted -- San Clemente Island triteleia
  Triteleia crocea (Alph. Wood) Greene -- accepted -- yellow triteleia
  Triteleia crocea var. crocea (Alph. Wood) Greene -- not accepted -- yellow triteleia
  Triteleia crocea var. modesta (H.M. Hall) Hoover -- not accepted -- yellow triteleia
  Triteleia dudleyi Hoover -- accepted -- Dudley's triteleia
  Triteleia gracilis (S. Watson) Greene -- not accepted
  Triteleia grandiflora Lindl. -- accepted -- largeflower triteleia
  Triteleia grandiflora var. grandiflora Lindl. -- not accepted -- largeflower triteleia
  Triteleia grandiflora var. howellii (S. Watson) Hoover -- not accepted -- Howell's triteleia
  Triteleia hendersonii Greene -- accepted -- Henderson's triteleia
  Triteleia hendersonii var. hendersonii Greene -- not accepted -- Henderson's triteleia
  Triteleia hendersonii var. leachiae (M. Peck) Hoover -- not accepted -- Leach's triteleia
  Triteleia howellii (S. Watson) Greene -- not accepted
  Triteleia hyacinthina (Lindl.) Greene -- accepted -- white brodiaea, wild hyacinth
  Triteleia hyacinthina var. greenei Hoover -- not accepted
  Triteleia ixioides (W.T. Aiton) Greene -- accepted -- prettyface
  Triteleia ixioides ssp. anilina (Greene) L.W. Lenz -- accepted -- prettyface
  Triteleia ixioides ssp. cookii (Hoover) L.W. Lenz -- accepted -- Cook's triteleia
  Triteleia ixioides ssp. ixioides (W.T. Aiton) Greene -- accepted -- golden brodiaea
  Triteleia ixioides ssp. scabra (Greene) L.W. Lenz -- accepted -- prettyface
  Triteleia ixioides ssp. unifolia L.W. Lenz -- accepted -- prettyface
  Triteleia ixioides var. anilina (Greene) Hoover -- not accepted
  Triteleia ixioides var. cookii Hoover -- not accepted
  Triteleia laxa Benth. -- accepted -- Ithuriel's spear
  Triteleia lemmoniae (S. Watson) Greene -- accepted -- Oak Creek triplet-lily, Oak Creek triteleia
  Triteleia lilacina Greene -- accepted -- foothill triteleia
  Triteleia lugens Greene -- accepted -- Coast Range triteleia
  Triteleia modesta (H.M. Hall) Abrams -- not accepted
  Triteleia montana Hoover -- accepted -- Sierra triteleia
  Triteleia peduncularis Lindl. -- accepted -- long-ray brodiaea
  Triteleia scabra (Greene) Greene ex Rattan -- not accepted
  Triteleia uniflora Lindl. -- not accepted
  Triteleia versicolor Hoover -- not accepted -- pinto triteleia
  Triteleia X versicolor Hoover -- accepted -- pinto triteleia
  Triteleiopsis Hoover -- accepted -- Baja lily, Bajalily
  Triteleiopsis palmeri (S. Watson) Hoover -- accepted -- Palmer's Baja-lily, Palmer's Bajalily
  Tulbaghia L. -- accepted -- wild garlic
  Tulipa L. -- accepted -- tulip
  Tulipa dasystemon (Regel) Regel -- accepted
  Tulipa gesneriana L. -- accepted -- Didier's tulip
  Tulipa sylvestris L. -- accepted -- wild tulip
  Unifolium canadense (Desf.) Greene -- not accepted
  Urginea Steinh. -- not accepted -- liverseed grass
  Urginea maritima (L.) Baker -- not accepted -- red squill
  Urginea scilla Steinh. -- not accepted
  Uvularia L. -- accepted -- bellwort
  Uvularia amplexifolia L. -- not accepted
  Uvularia carolina (J.F. Gmel.) Wilbur -- not accepted
  Uvularia floridana Chapm. -- accepted -- Florida bellwort
  Uvularia grandiflora Sm. -- accepted -- large-flower bellwort, largeflower bellwort
  Uvularia nitida (Britton) Mack. -- not accepted
  Uvularia perfoliata L. -- accepted -- perfoliate bellwort
  Uvularia puberula Michx. -- accepted -- mountain bellwort
  Uvularia puberula var. nitida (Britton) Fernald -- not accepted
  Uvularia pudica sensu Fernald -- not accepted
  Uvularia pudica var. nitida (Britton) Fernald -- not accepted
  Uvularia sessilifolia L. -- accepted -- sessile-leaf bellwort, sessileleaf bellwort
  Uvularia smithii Hook. -- not accepted
  Vagnera amplexicaulis (Nutt.) Greene -- not accepted
  Vagnera amplexicaulis var. glabra (J.F. Macbr.) Abrams -- not accepted
  Vagnera australis Rydb. -- not accepted
  Vagnera liliacea (Greene) Rydb. -- not accepted
  Vagnera racemosa (L.) Morong -- not accepted
  Vagnera sessilifolia (Nutt. ex Baker) Greene -- not accepted
  Vagnera stellata (L.) Morong -- not accepted
  Vagnera trifolia (L.) Morong -- not accepted
  Validallium tricoccum (Aiton) Small -- not accepted
  Veratrum L. -- accepted -- false hellebore
  Veratrum album L. -- accepted -- white false hellebore
  Veratrum album ssp. album L. -- not accepted -- white false hellebore
  Veratrum album ssp. oxysepalum (Turcz.) Hultén -- not accepted -- white false hellebore
  Veratrum album var. album L. -- accepted -- white false hellebore
  Veratrum album var. oxysepalum (Turcz.) B. Boivin -- accepted -- white false hellebore
  Veratrum californicum Durand -- accepted -- California false hellebore
  Veratrum californicum var. californicum Durand -- accepted -- California false hellebore, California falsehellebore
  Veratrum californicum var. caudatum (A. Heller) C.L. Hitchc. -- accepted -- Cascade false hellebore
  Veratrum caudatum A. Heller -- not accepted
  Veratrum eschscholtzianum (Schult. & Schult. f.) Rydb. ex A. Heller -- not accepted
  Veratrum eschscholtzii A. Gray -- not accepted
  Veratrum eschscholtzii var. incriminatum B. Boivin -- not accepted
  Veratrum fimbriatum A. Gray -- accepted -- fringed false hellebore
  Veratrum insolitum Jeps. -- accepted -- Siskiyou false hellebore
  Veratrum intermedium Chapm. -- not accepted
  Veratrum latifolium (Desr.) Zomlefer -- accepted -- slender bunchflower
  Veratrum luteum L. -- not accepted
  Veratrum nigrum L. -- accepted -- black-hellebore, false hellebore
  Veratrum oxysepalum Turcz. -- not accepted
  Veratrum parviflorum Michx. -- accepted -- Appalachian bunchflower
  Veratrum speciosum Rydb. -- not accepted
  Veratrum tenuipetalum A. Heller -- not accepted -- Colorado false hellebore
  Veratrum virginicum (L.) W.T. Aiton -- accepted -- Virginia bunchflower
  Veratrum viride Aiton -- accepted -- green false hellebore
  Veratrum viride ssp. eschscholtzii (A. Gray) Á. Löve & D. Löve -- not accepted
  Veratrum viride var. eschscholtzii (A. Gray) Breitung -- not accepted
  Veratrum woodii J.W. Robbins ex Alph. Wood -- accepted -- false hellebore, Wood's bunchflower
  Xanthorrhoeaceae -- accepted
  Xeniatrum umbellulatum (Michx.) Small -- not accepted
  Xerophyllum Michx. -- accepted -- beargrass
  Xerophyllum asphodeloides (L.) Nutt. -- accepted -- eastern turkeybeard
  Xerophyllum tenax (Pursh) Nutt. -- accepted -- common beargrass
  Yucca L. -- accepted -- yucca, yucca species
  Yucca aloifolia L. -- accepted -- aloe yucca, Izote Kukil
  Yucca angustifolia Pursh -- not accepted
  Yucca angustissima Engelm. ex Trel. -- accepted -- narrowleaf yucca
  Yucca angustissima var. angustissima Engelm. ex Trel. -- accepted -- fineleaf yucca, narrowleaf yucca
  Yucca angustissima var. avia Reveal -- accepted
  Yucca angustissima var. elata Engelm. -- not accepted
  Yucca angustissima var. kanabensis (McKelvey) Reveal -- accepted -- Kanab yucca
  Yucca angustissima var. mollis Engelm. -- not accepted
  Yucca angustissima var. toftiae (S.L. Welsh) Reveal -- accepted -- Toft's yucca
  Yucca arizonica McKelvey -- not accepted -- Izote de Arizona
  Yucca arkansana Trel. -- accepted -- Arkansas yucca
  Yucca arkansana var. paniculata McKelvey -- not accepted
  Yucca baccata Torr. -- accepted -- banana yucca, datil yucca, Izote de dátil
  Yucca baccata var. baccata Torr. -- accepted -- banana yucca
  Yucca baccata var. brevifolia L.D. Benson & Darrow -- accepted -- Spanish dagger
  Yucca baccata var. macrocarpa Torr. -- not accepted
  Yucca baccata var. vespertina McKelvey -- not accepted -- banana yucca
  Yucca baileyi Wooton & Standl. -- accepted -- Navajo yucca
  Yucca baileyi var. baileyi Wooton & Standl. -- not accepted -- Bailey yucca, Bailey's yucca, Navajo yucca
  Yucca baileyi var. intermedia (McKelvey) Reveal -- not accepted -- intermediate yucca
  Yucca baileyi var. navajoa (J.M. Webber) J.M. Webber -- not accepted -- Navajo yucca
  Yucca brevifolia Schott ex Torr. (pro. syn.) -- not accepted -- Joshua tree
  Yucca brevifolia Engelm. -- accepted -- Izote de desierto, Joshua tree
  Yucca brevifolia var. brevifolia Engelm. -- accepted -- Joshua tree, western Joshua tree
  Yucca brevifolia var. herbertii (J.M. Webber) Munz -- not accepted
  Yucca brevifolia var. jaegeriana McKelvey -- accepted -- eastern Joshua tree, Jaeger Joshua tree, Jaeger's Joshua tree
  Yucca californica Lemmon -- not accepted
  Yucca californica Nutt. ex Baker -- not accepted
  Yucca campestris McKelvey -- accepted -- plains yucca
  Yucca carnerosana auct. non (Trel.) McKelvey -- not accepted -- Izote samandoca
  Yucca cernua E.L. Keith -- accepted
  Yucca concava Haw. -- not accepted
  Yucca confinis McKelvey -- not accepted
  Yucca constricta Buckley -- accepted -- buckley yucca, Buckley's yucca
  Yucca crassifila Engelm. -- not accepted
  Yucca elata Engelm. -- accepted -- Izote forrajero, soaptree yucca
  Yucca elata var. elata Engelm. -- accepted -- soaptree yucca
  Yucca elata var. utahensis (McKelvey) Reveal -- not accepted -- Utah yucca
  Yucca elata var. verdiensis (McKelvey) Reveal -- accepted -- soaptree yucca, Verdi yucca
  Yucca elephantipes Regel -- not accepted -- Izote de ciudad
  Yucca faxoniana Sarg. -- accepted -- Eve's needle, fleshy yucca
  Yucca filamentosa L. -- accepted -- Adam's needle
  Yucca filamentosa var. concava (Haw.) Baker -- not accepted
  Yucca filamentosa var. smalliana (Fernald) H.E. Ahles -- not accepted
  Yucca flaccida Haw. -- accepted -- weak-leaf yucca
  Yucca freemanii Shinners -- not accepted
  Yucca gigantea Lem. -- accepted
  Yucca gilbertiana (Trel.) Rydb. -- not accepted
  Yucca glauca Nutt. -- accepted -- beargrass, Great Plains yucca, small soapweed, soapweed yucca, Spanish bayonet, yucca
  Yucca glauca var. glauca Nutt. -- not accepted -- narrowleaf yucca, soapweed yucca
  Yucca glauca var. gurneyi McKelvey -- not accepted -- Gurney's yucca
  Yucca glauca var. mollis Engelm. ex Branner & Coville -- not accepted
  Yucca gloriosa L. -- accepted -- moundlily yucca
  Yucca gloriosa var. gloriosa L. -- accepted -- moundlily yucca
  Yucca gloriosa var. recurvifolia (Salisb.) Engelm. -- accepted -- curve-leaf yucca
  Yucca graminifolia Alph. Wood -- not accepted
  Yucca guatemalensis Baker -- not accepted -- bluestem yucca
  Yucca harrimaniae Trel. -- accepted -- Spanish bayonet, Spanish-bayonet
  Yucca harrimaniae var. gilbertiana Trel. -- not accepted
  Yucca harrimaniae var. harrimaniae Trel. -- not accepted -- Harriman yucca, Harriman's Spanish bayonet, Spanish bayonet
  Yucca harrimaniae var. neomexicana (Wooton & Standl.) Reveal -- not accepted -- New Mexico Spanish bayonet
  Yucca harrimaniae var. sterilis Neese & S.L. Welsh -- not accepted -- Spanish bayonet
  Yucca intermedia McKelvey -- accepted -- intermediate yucca
  Yucca intermedia var. ramosa McKelvey -- not accepted
  Yucca jaegeriana (McKelvey) L.W. Lenz -- not accepted -- eastern Joshua tree, Jaeger's Joshua tree
  Yucca kanabensis McKelvey -- not accepted
  Yucca louisianensis Trel. -- accepted -- Gulf Coast yucca, Louisiana yucca
  Yucca macrocarpa (Torr.) Coville -- not accepted
  Yucca macrocarpa Engelm., non Merriam -- not accepted
  Yucca macrocarpa Merriam, non Engelm. -- not accepted
  Yucca madrensis Gentry -- accepted
  Yucca mohavensis Sarg. -- not accepted
  Yucca navajoa J.M. Webber -- not accepted
  Yucca necopina Shinners -- accepted -- Brazos River yucca
  Yucca neomexicana Wooton & Standl. -- accepted -- New Mexico Spanish bayonet
  Yucca newberryi McKelvey -- not accepted
  Yucca nitida C. Wright ex W. Watson -- not accepted
  Yucca pallida McKelvey -- accepted -- pale yucca, twistleaf yucca
  Yucca puberula Torr. -- not accepted
  Yucca recurvifolia Salisb. -- not accepted -- curve-leaf yucca, curveleaf yucca
  Yucca reverchonii Trel. -- accepted -- plateau yucca, San Angelo yucca
  Yucca rostrata Engelm. ex Trel. -- accepted -- beaked yucca, Izote Kikapú
  Yucca rostrata var. linearis Trel. -- not accepted
  Yucca rupicola Trel. -- not accepted -- Texas yucca
  Yucca rupicola Scheele -- accepted -- Texas yucca, twistedleaf yucca
  Yucca schidigera Roezl ex Ortgies -- accepted -- Izote de Ensenada, Mojave yucca, Spanish dagger
  Yucca schottii Engelm. -- not accepted -- Izote de Schott, Schott's yucca
  Yucca smalliana Fernald -- not accepted
  Yucca standleyi McKelvey -- not accepted
  Yucca tenuistyla Trel. -- accepted -- whiterim yucca
  Yucca thompsoniana Trel. -- accepted -- beaked yucca, Izote cenizo, Thompson's yucca
  Yucca thornberi McKelvey -- not accepted
  Yucca toftiae S.L. Welsh -- not accepted
  Yucca torreyi Shafer -- not accepted -- Izote criollo, torrey yucca, Torrey's yucca
  Yucca tortifolia Lindl. ex Engelm. -- not accepted
  Yucca treculeana Carričre -- accepted -- Don Quixote's lace, Izote de Chocha, trecul yucca
  Yucca treculeana var. canaliculata Trel. -- not accepted
  Yucca treculeana var. succulenta McKelvey -- not accepted -- Don Quixote's lace
  Yucca treculeana var. treculeana Carričre -- not accepted -- Don Quixote's lace
  Yucca treleasei J.F. Macbr. -- not accepted
  Yucca utahensis McKelvey -- accepted -- Utah yucca
  Yucca verdiensis McKelvey -- not accepted
  Yucca vespertina (McKelvey) S.L. Welsh -- not accepted
  Yucca whipplei Torr. -- not accepted -- chaparral yucca, Izote de hoz
  Yucca whipplei ssp. caespitosa (M.E. Jones) A.L. Haines -- not accepted
  Yucca whipplei ssp. eremica Epling & A.L. Haines -- not accepted -- Our Lord's-candle
  Yucca whipplei ssp. intermedia A.L. Haines -- not accepted
  Yucca whipplei ssp. parishii (M.E. Jones) A.L. Haines -- not accepted
  Yucca whipplei ssp. percursa A.L. Haines -- not accepted
  Yucca whipplei var. caespitosa M.E. Jones -- not accepted -- chaparral yucca
  Yucca whipplei var. graminifolia (Alph. Wood) Trel. -- not accepted
  Yucca whipplei var. intermedia (A.L. Haines) J.M. Webber -- not accepted
  Yucca whipplei var. parishii M.E. Jones -- not accepted
  Yucca whipplei var. percursa (A.L. Haines) J.M. Webber -- not accepted
  Yucca whipplei var. whipplei Torr. -- not accepted -- chaparral yucca, whipple yucca
  Yucca X karlsruhensis Graebn. -- accepted -- Karlsruh yucca
  Yucca X schottii Engelm. (pro. sp.) -- accepted -- Schott's yucca
  Zephyranthes Herb. -- accepted -- zephyrlily
  Zephyranthes atamasco (L.) Herb. -- accepted -- Atamasco lily
  Zephyranthes atamasco var. atamasco (L.) Herb. -- not accepted -- Atamasco lily
  Zephyranthes atamasco var. treatiae (S. Watson) Meerow -- not accepted -- Atamasco lily
  Zephyranthes bifolia (Aubl.) M. Roem. -- accepted -- West Indian zephyrlily
  Zephyranthes brazosensis Traub -- not accepted
  Zephyranthes candida (Lindl.) Herb. -- accepted -- autumn zephyrlily
  Zephyranthes chlorosolen (Herb.) D. Dietr. -- accepted -- evening rainlily
  Zephyranthes citrina Baker -- accepted -- citron zephyrlily
  Zephyranthes drummondii D. Don -- accepted -- prairie lily
  Zephyranthes grandiflora Lindl. -- accepted -- rosepink zephyrlily
  Zephyranthes herbertiana D. Dietr. -- not accepted
  Zephyranthes insularum auct. non H.H. Hume ex Moldenke -- not accepted
  Zephyranthes insularum H.H. Hume ex Moldenke -- accepted
  Zephyranthes jonesii (Cory) Traub -- accepted -- Jones' rainlily
  Zephyranthes longifolia Hemsl. -- accepted -- copper zephyr-lily, copper zephyrlily
  Zephyranthes puertoricensis Traub -- accepted -- Puerto Rico zephyrlily
  Zephyranthes pulchella J.G. Sm. -- accepted -- showy zephyrlily
  Zephyranthes refugiensis F.B. Jones -- accepted -- refugio zephyrlily
  Zephyranthes rosea Lindl. -- accepted -- Cuban zephyrlily
  Zephyranthes simpsonii Chapm. -- accepted -- redmargin zephyrlily
  Zephyranthes smallii (Alexander) Traub -- accepted -- Small's rainlily
  Zephyranthes texana Herb. -- not accepted
  Zephyranthes traubii (W. Hayw.) Moldenke -- accepted -- Traub's rainlily
  Zephyranthes treatiae S. Watson -- accepted
  Zephyranthes tubispatha (L'Hér.) Herb. -- not accepted
  Zigadenus Michx. -- accepted -- deathcamas
  Zigadenus alpinus Blank. -- not accepted
  Zigadenus brevibracteatus (M.E. Jones) H.M. Hall -- not accepted -- desert deathcamas
  Zigadenus densus (Desr.) Fernald -- not accepted -- Osceola's plume
  Zigadenus elegans Pursh -- not accepted -- mountain deathcamas
  Zigadenus elegans ssp. elegans Pursh -- not accepted -- mountain deathcamas
  Zigadenus elegans ssp. glaucus (Nutt.) Hultén -- not accepted -- mountain deathcamas
  Zigadenus elegans var. glaucus (Nutt.) Cronquist -- not accepted
  Zigadenus exaltatus Eastw. -- not accepted -- giant deathcamas
  Zigadenus fontanus Eastw. -- not accepted
  Zigadenus fremontii (Torr.) Torr. ex S. Watson -- not accepted -- Fremont's deathcamas
  Zigadenus fremontii var. brevibracteatus M.E. Jones -- not accepted
  Zigadenus fremontii var. inezianus Jeps. -- not accepted
  Zigadenus fremontii var. minor (Hook. & Arn.) Jeps. -- not accepted
  Zigadenus fremontii var. salsus Jeps. -- not accepted
  Zigadenus glaberrimus Michx. -- accepted -- sandbog deathcamas
  Zigadenus glaucus Nutt. -- not accepted
  Zigadenus gramineus Rydb. -- not accepted
  Zigadenus intermedius Rydb. -- not accepted
  Zigadenus leimanthoides A. Gray -- not accepted -- pine barren deathcamas, pinebarren deathcamas
  Zigadenus micranthus Eastw. -- not accepted -- smallflower deathcamas
  Zigadenus micranthus var. fontanus (Eastw.) O.S. Walsh ex McNeal -- not accepted -- smallflower deathcamas
  Zigadenus micranthus var. micranthus Eastw. -- not accepted -- smallflower deathcamas
  Zigadenus mogollonensis W.J. Hess & Sivinski -- not accepted -- Mogoll deathcamas
  Zigadenus muscitoxicus (Walter) Regel -- not accepted
  Zigadenus nuttallii (A. Gray) S. Watson -- not accepted -- Nuttall's deathcamas
  Zigadenus paniculatus (Nutt.) S. Watson -- not accepted -- foothill deathcamas, sand-corn
  Zigadenus vaginatus (Rydb.) J.F. Macbr. -- not accepted -- sheathed deathcamas
  Zigadenus venenosus S. Watson -- not accepted -- death camas, meadow deathcamas
  Zigadenus venenosus var. gramineus (Rydb.) Walsh ex M. Peck -- not accepted -- deathcamas, grassy deathcamas
  Zigadenus venenosus var. micranthus (Eastw.) Jeps. -- not accepted
  Zigadenus venenosus var. venenosus S. Watson -- not accepted -- meadow deathcamas
  Zigadenus virescens (Kunth) J.F. Macbr. -- not accepted -- green deathcamas
  Zigadenus volcanicus Benth. -- not accepted -- lava deathcamas
   

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