"Acanthoscyphus parishii var. abramsii" "Acanthoscyphus parishii var. cienegensis" "Acanthoscyphus parishii var. goodmaniana" "Acleisanthes angustifolia" "Acleisanthes chenopodioides" "Acleisanthes diffusa" "Acleisanthes lanceolata" "Acleisanthes lanceolata var. lanceolata" "Acleisanthes nevadensis" "Acleisanthes parvifolia" "Aconitum columbianum subsp. viviparum" "Aconogonon alaskanum var. glabrescens" "Aconogonon davisiae var. glabrum" "Aconogonon phytolaccifolium var. glabrum" "Adiantum aleuticum" "Adiantum viridimontanum" "Agalinis flexicaulis" "Agalinis navasotensis" "Agave delamateri" "Agave deserti var. simplex" "Agave parryi subsp. neomexicana" "Agave phillipsiana" "Agave ×ajoensis" Agnorhiza "Agnorhiza bolanderi" "Agnorhiza elata" "Agnorhiza invenusta" "Agnorhiza ovata" "Agnorhiza reticulata" "Agoseris apargioides var. maritima" "Agoseris grandiflora var. leptophylla" "Agoseris heterophylla var. quentinii" "Allium abramsii" "Allium atrorubens var. cristatum" "Allium bolanderi var. mirabile" "Allium denticulatum" "Allium diabolense" "Allium fimbriatum var. purdyi" "Allium munzii" "Allium peninsulare var. franciscanum" "Allium sharsmithiae" "Alnus alnobetula subsp. crispa" "Alnus alnobetula subsp. fruticosa" "Alnus alnobetula subsp. sinuata" "Amaranthus sect. Acanthochiton" "Amaranthus sect. Acnida" "Amaranthus sect. Saueranthus" "Amaranthus tamaulipensis" "Ambrosia monogyra" "Ambrosia salsola" "Ammannia grayi" Ampelaster "Ampelaster carolinianus" "Ancistrocarphus keilii" "Anemone multifida var. stylosa" "Anemone narcissiflora var. zephyra" "Anemone okennonii" "Anemone quinquefolia var. minima" "Anisocarpus scabridus" "Antennaria friesiana subsp. neoalaskana" "Antennaria luzuloides subsp. aberrans" "Antennaria pulcherrima subsp. eucosma" "Anulocaulis leiosolenus var. gypsogenus" "Anulocaulis leiosolenus var. howardii" "Arabidopsis arenicola" "Arabidopsis lyrata" "Arabidopsis lyrata subsp. kamchatica" "Arabidopsis lyrata subsp. lyrata" "Arabidopsis lyrata subsp. petraea" "Arceuthobium campylopodum subsp. abietinum" "Arceuthobium campylopodum subsp. apachecum" "Arceuthobium campylopodum subsp. blumeri" "Arceuthobium campylopodum subsp. californicum" "Arceuthobium campylopodum subsp. cyanocarpum" "Arceuthobium campylopodum subsp. laricis" "Arceuthobium campylopodum subsp. littorum" "Arceuthobium campylopodum subsp. microcarpum" "Arceuthobium campylopodum subsp. monticola" "Arceuthobium campylopodum subsp. occidentale" "Arceuthobium campylopodum subsp. siskiyouense" "Arceuthobium campylopodum subsp. tsugense" "Arenaria lanuginosa var. saxosa" "Argyrochosma limitanea subsp. mexicana" Arida "Arida arizonica" "Arida blepharophylla" "Arida carnosa" "Arida mattturneri" "Arida parviflora" "Arida riparia" "Arnica dealbata" "Arnica lanceolata subsp. prima" "Arnoglossum album" "Artemisia arbuscula subsp. longiloba" "Artemisia globularia subsp. lutea" "Asplenium scolopendrium var. americanum" "Astranthium ciliatum" Astrolepis "Astrolepis cochisensis" "Astrolepis cochisensis subsp. arizonica" "Astrolepis cochisensis subsp. chihuahuensis" "Astrolepis cochisensis subsp. cochisensis" "Astrolepis integerrima" "Astrolepis sinuata" "Astrolepis sinuata subsp. mexicana" "Astrolepis sinuata subsp. sinuata" "Astrolepis windhamii" "Atriplex acanthocarpa var. coahuilensis" "Atriplex argentea var. longitrichoma" "Atriplex argentea var. rydbergii" "Atriplex cordulata var. erecticaulis" "Atriplex coronata var. vallicola" "Atriplex gardneri var. aptera" "Atriplex garrettii var. navajoensis" "Atriplex glabriuscula var. acadiensis" "Atriplex glabriuscula var. franktonii" "Atriplex gmelinii var. alaskensis" "Atriplex parishii var. depressa" "Atriplex parishii var. minuscula" "Atriplex parishii var. persistens" "Atriplex parishii var. subtilis" "Atriplex powellii var. minuticarpa" "Atriplex saccaria var. asterocarpa" "Atriplex saccaria var. cornuta" "Atriplex sect. Covilleiae" "Atriplex sect. Phyllostegiae" "Atriplex sect. Pleianthae" "Atriplex subg. Obione" "Atriplex subg. Pterochiton" "Atriplex subsect. Arenariae" "Atriplex subsect. Argenteae" "Atriplex subsect. Californicae" "Atriplex subsect. Graciliflorae" "Atriplex subsect. Leucophyllae" "Atriplex subsect. Pusillae" "Atriplex subsect. Saccariae" "Atriplex subsect. Truncatae" "Atriplex subsect. Wolfianae" "Atriplex wolfii var. tenuissima" "Baccharis malibuensis" "Bahiopsis laciniata" "Bahiopsis parishii" "Bahiopsis reticulata" "Balsamorhiza lanata" "Berlandiera monocephala" "Boechera acutina" "Boechera arcuata" "Boechera atrorubens" "Boechera bodiensis" "Boechera breweri" "Boechera breweri subsp. breweri" "Boechera breweri subsp. shastaensis" "Boechera burkii" "Boechera calderi" "Boechera californica" "Boechera canadensis" "Boechera cascadensis" "Boechera cobrensis" "Boechera consanguinea" "Boechera constancei" "Boechera covillei" "Boechera cusickii" "Boechera davidsonii" "Boechera dentata" "Boechera depauperata" "Boechera dispar" "Boechera drepanoloba" "Boechera duchesnensis" "Boechera elkoensis" "Boechera evadens" "Boechera falcatoria" "Boechera falcifructa" "Boechera fecunda" "Boechera fernaldiana subsp. vivariensis" "Boechera formosa" "Boechera fructicosa" "Boechera glareosa" "Boechera glaucovalvula" "Boechera goodrichii" "Boechera gracilenta" "Boechera gracilipes" "Boechera grahamii" "Boechera harrisonii" "Boechera hastatula" "Boechera hoffmannii" "Boechera horizontalis" "Boechera howellii" "Boechera inyoensis" "Boechera johnstonii" "Boechera koehleri" "Boechera laevigata" "Boechera languida" "Boechera lasiocarpa" "Boechera lincolnensis" "Boechera lyallii" "Boechera macounii" "Boechera microphylla" "Boechera missouriensis" "Boechera nevadensis" "Boechera ophira" "Boechera paddoensis" "Boechera pallidifolia" "Boechera parishii" "Boechera pauciflora" "Boechera paupercula" "Boechera peirsonii" "Boechera pendulocarpa" "Boechera perstellata" "Boechera pinetorum" "Boechera pinzliae" "Boechera platysperma" "Boechera polyantha" "Boechera porphyrea" "Boechera pratincola" "Boechera puberula" "Boechera pusilla" "Boechera pygmaea" "Boechera quebecensis" "Boechera rectissima" "Boechera repanda" "Boechera rigidissima" "Boechera rollei" "Boechera rollinsiorum" "Boechera rubicundula" "Boechera saximontana" "Boechera schistacea" "Boechera serotina" "Boechera serpenticola" "Boechera shevockii" "Boechera shockleyi" "Boechera sparsiflora" "Boechera spatifolia" "Boechera stricta" "Boechera subpinnatifida" "Boechera suffrutescens" "Boechera texana" "Boechera tiehmii" "Boechera tularensis" "Boechera ultra-alsa" "Boechera villosa" "Boechera williamsii" "Boechera xylopoda" "Boechera yorkii" "Boerhavia coulteri var. palmeri" "Bolboschoenus glaucus" "Bolboschoenus novae-angliae" "Botrychium gallicomontanum" "Botrychium sect. Hiemobotrychium" Brachytheciastrum "Brachytheciastrum collinum" "Brachytheciastrum delicatulum" "Brachytheciastrum fendleri" "Brachytheciastrum leibergii" "Brachytheciastrum trachypodium" "Brachytheciastrum velutinum" "Brachytheciastrum velutinum var. salicinum" "Brachytheciastrum velutinum var. velutinum" "Brachythecium boreale" "Brachythecium erythrorrhizon var. alpinum" "Brachythecium jacuticum" "Brachythecium ruderale" "Bradburia pilosa" "Brassicaceae tribe Aphragmeae" "Brassicaceae tribe Boechereae" "Brassicaceae tribe Conringieae" "Brassicaceae tribe Descurainieae" "Brassicaceae tribe Eutremeae" "Brassicaceae tribe Halimolobeae" "Brassicaceae tribe Malcolmieae" "Brassicaceae tribe Noccaeeae" "Brassicaceae tribe Smelowskieae" "Braya glabella subsp. prostrata" "Braya humilis subsp. ellesmerensis" "Braya humilis subsp. maccallae" "Braya humilis subsp. porsildii" "Braya thorild-wulffii subsp. glabrata" "Brickellia hinckleyi var. terlinguensis" "Brickellia longifolia var. multiflora" "Brodiaea californica subsp. leptandra" "Brotherella canadensis" Buckiella "Buckiella undulata" "Callitriche brutia var. hamulata" "Callitriche stenoptera" "Calochortus argillosus" "Calochortus clavatus var. pallidus" "Calochortus clavatus var. recurvifolius" "Calopogon oklahomensis" "Calycadenia micrantha" "Calydorea coelestina" Camissoniopsis "Camissoniopsis bistorta" "Camissoniopsis cheiranthifolia" "Camissoniopsis cheiranthifolia subsp. cheiranthifolia" "Camissoniopsis cheiranthifolia subsp. suffruticosa" "Camissoniopsis confusa" "Camissoniopsis guadalupensis" "Camissoniopsis guadalupensis subsp. clementiana" "Camissoniopsis hardhamiae" "Camissoniopsis hirtella" "Camissoniopsis ignota" "Camissoniopsis intermedia" "Camissoniopsis lewisii" "Camissoniopsis luciae" "Camissoniopsis micrantha" "Camissoniopsis pallida" "Camissoniopsis pallida subsp. hallii" "Camissoniopsis pallida subsp. pallida" "Camissoniopsis robusta" "Campylium laxifolium" "Campylophyllum hispidulum" "Campylophyllum sommerfeltii" Canadanthus "Canadanthus modestus" "Cardamine holmgrenii" "Cardamine pachystigma" "Carex acidicola" "Carex brysonii" "Carex calcifugens" "Carex communis var. amplisquama" "Carex cordillerana" "Carex cumberlandensis" "Carex digitalis var. floridana" "Carex gholsonii" "Carex godfreyi" "Carex infirminervia" "Carex juniperorum" "Carex kraliana" "Carex lativena" "Carex lutea" "Carex mckittrickensis" "Carex missouriensis" "Carex molestiformis" "Carex opaca" "Carex ozarkana" "Carex paeninsulae" "Carex perdentata" "Carex pigra" "Carex planispicata" "Carex radfordii" "Carex scirpoidea subsp. convoluta" "Carex scirpoidea subsp. pseudoscirpoidea" "Carex sect. Glaucescentes" "Carex sect. Hirtifoliae" "Carex sect. Hispidae" "Carex sect. Longicaules" "Carex serpenticola" "Carex shinnersii" "Carex superata" "Carex thornei" "Carex timida" "Carex tonsa var. rugosperma" Carlquistia "Carlquistia muirii" "Carphephorus odoratissimus var. subtropicanus" Cassiope "Cassiope lycopodioides" "Cassiope mertensiana" "Cassiope mertensiana subsp. californica" "Cassiope mertensiana subsp. ciliolata" "Cassiope mertensiana subsp. gracilis" "Cassiope mertensiana subsp. mertensiana" "Cassiope tetragona" "Cassiope tetragona subsp. saximontana" "Cassiope tetragona subsp. tetragona" "Castilleja affinis var. neglecta" "Castilleja ambigua var. humboldtiensis" "Castilleja ambigua var. insalutata" "Castilleja ambigua var. meadii" "Castilleja attenuata" "Castilleja brevistyla" "Castilleja campestris" "Castilleja campestris var. campestris" "Castilleja campestris var. succulenta" "Castilleja chambersii" "Castilleja collegiorum" "Castilleja densiflora" "Castilleja densiflora var. densiflora" "Castilleja densiflora var. gracilis" "Castilleja densiflora var. obispoënsis" "Castilleja exserta" "Castilleja exserta var. exserta" "Castilleja exserta var. latifolia" "Castilleja exserta var. venusta" "Castilleja genevieveana" "Castilleja kerryana" "Castilleja kraliana" "Castilleja lacera" "Castilleja lasiorhyncha" "Castilleja lineariloba" "Castilleja miniata var. fulva" "Castilleja minor var. exilis" "Castilleja minor var. spiralis" "Castilleja minor var. stenantha" "Castilleja pallida var. yukonis" "Castilleja rubicundula" "Castilleja rubicundula var. lithospermoides" "Castilleja rubicundula var. rubicundula" "Castilleja subinclusa var. franciscana" "Castilleja subinclusa var. jepsonii" "Castilleja tenuis" "Castilleja victoriae" "Ceanothus ophiochilus" "Centromadia parryi subsp. australis" "Centromadia parryi subsp. congdonii" "Centromadia parryi subsp. rudis" "Centromadia pungens subsp. laevis" "Cerastium velutinum var. villossissimum" "Cheilanthes yavapensis" "Chenopodium berlandieri var. bushianum" "Chenopodium berlandieri var. macrocalycium" "Chenopodium sect. Grossefoveata" "Chenopodium subsect. Favosa" "Chenopodium subsect. Fremontia" "Chenopodium subsect. Leptophylla" "Chenopodium subsect. Polysperma" "Chenopodium subsect. Standleyana" "Chenopodium subsect. Undata" "Chenopodium subsect. Urbica" Chloracantha "Chloracantha spinosa" "Chloracantha spinosa var. spinosa" "Chloropyron maritimum subsp. canescens" "Chloropyron maritimum subsp. palustre" "Chloropyron molle subsp. hispidum" "Chloropyron palmatum" "Chloropyron tecopense" "Chrysogonum virginianum var. brevistolon" "Chrysopsis delaneyi" "Chrysopsis highlandsensis" "Chrysothamnus scopulorum" "Chrysothamnus stylosus" "Chylismia atwoodii" "Chylismia brevipes subsp. arizonica" "Chylismia brevipes subsp. pallidula" "Chylismia cardiophylla subsp. robusta" "Chylismia claviformis subsp. aurantiaca" "Chylismia claviformis subsp. cruciformis" "Chylismia claviformis subsp. funerea" "Chylismia claviformis subsp. integrior" "Chylismia claviformis subsp. lancifolia" "Chylismia claviformis subsp. peeblesii" "Chylismia claviformis subsp. peirsonii" "Chylismia claviformis subsp. rubescens" "Chylismia claviformis subsp. yumae" "Chylismia confertiflora" "Chylismia eastwoodiae" "Chylismia exilis" "Chylismia megalantha" "Chylismia munzii" "Chylismia scapoidea subsp. brachycarpa" "Chylismia scapoidea subsp. macrocarpa" "Chylismia scapoidea subsp. utahensis" "Chylismia sect. Lignothera" "Chylismia specicola" "Chylismia specicola subsp. hesperia" "Chylismia specicola subsp. specicola" "Chylismia walkeri subsp. tortilis" Chylismiella "Chylismiella pterosperma" "Circaea ×sterilis" "Cirsium arizonicum var. bipinnatum" "Cirsium arizonicum var. chellyense" "Cirsium arizonicum var. rothrockii" "Cirsium arizonicum var. tenuisectum" "Cirsium clavatum var. americanum" "Cirsium clavatum var. osterhoutii" "Cirsium cymosum var. canovirens" "Cirsium douglasii var. breweri" "Cirsium eatonii var. clokeyi" "Cirsium eatonii var. eriocephalum" "Cirsium eatonii var. hesperium" "Cirsium eatonii var. peckii" "Cirsium eatonii var. viperinum" "Cirsium edule var. macounii" "Cirsium edule var. wenatchense" "Cirsium fontinale var. campylon" "Cirsium horridulum var. megacanthum" "Cirsium inamoenum" "Cirsium inamoenum var. davisii" "Cirsium inamoenum var. inamoenum" "Cirsium joannae" "Cirsium occidentale var. californicum" "Cirsium occidentale var. lucianum" "Cirsium ochrocentrum var. martinii" "Cirsium pulcherrimum var. aridum" "Cirsium scariosum var. americanum" "Cirsium scariosum var. citrinum" "Cirsium scariosum var. coloradense" "Cirsium scariosum var. congdonii" "Cirsium scariosum var. robustum" "Cirsium scariosum var. toiyabense" "Clarkia concinna subsp. raichei" "Clarkia heterandra" "Clarkia mildrediae subsp. lutescens" "Clarkia speciosa subsp. nitens" "Clarkia subsect. Connubium" "Clarkia subsect. Heterogaura" "Clarkia xantiana subsp. parviflora" "Claytonia exigua subsp. glauca"