"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"