Property:Taxon name
A
Abelmoschus +
Abelmoschus esculentus +
Abies amabilis +
Abies balsamea +
Abies bifolia +
Abies bracteata +
Abies concolor +
Abies fraseri +
Abies grandis +
Abies lasiocarpa +
Abies lowiana +
Abies magnifica +
Abies procera +
Abietinella +
Abietinella abietina +
Abildgaardia +
Abildgaardia ovata +
Abronia alpina +
Abronia ameliae +
Abronia ammophila +
Abronia angustifolia +
Abronia argillosa +
Abronia bigelovii +
Abronia bolackii +
Abronia carletonii +
Abronia elliptica +
Abronia fragrans +
Abronia latifolia +
Abronia macrocarpa +
Abronia maritima +
Abronia mellifera +
Abronia nana +
Abronia nana var. covillei +
Abronia nana var. nana +
Abronia pogonantha +
Abronia turbinata +
Abronia umbellata +
Abronia umbellata var. acutalata +
Abronia umbellata var. breviflora +
Abronia umbellata var. umbellata +
Abronia villosa +
Abronia villosa var. aurita +
Abronia villosa var. villosa +
Abutilon abutiloides +
Abutilon berlandieri +
Abutilon coahuilae +
Abutilon fruticosum +
Abutilon hirtum +
Abutilon hulseanum +
Abutilon hypoleucum +
Abutilon incanum +
Abutilon malacum +
Abutilon mollicomum +
Abutilon palmeri +
Abutilon parishii +
Abutilon parvulum +
Abutilon permolle +
Abutilon reventum +
Abutilon theophrasti +
Abutilon trisulcatum +
Abutilon wrightii +
Acaena novae-zelandiae +
Acaena pallida +
Acaena pinnatifida +
Acalypha alopecuroidea +
Acalypha arvensis +
Acalypha australis +
Acalypha californica +
Acalypha chamaedrifolia +
Acalypha deamii +
Acalypha gracilens +
Acalypha monococca +
Acalypha monostachya +
Acalypha neomexicana +
Acalypha ostryifolia +
Acalypha phleoides +
Acalypha poiretii +
Acalypha radians +
Acalypha rhomboidea +
Acalypha setosa +
Acalypha virginica +
Acalypha wilkesiana +
Acamptopappus +
Acamptopappus shockleyi +
Acamptopappus sphaerocephalus +
Acamptopappus sphaerocephalus var. hirtellus +
Acamptopappus sphaerocephalus var. sphaerocephalus +
Acanthocereus +
Acanthocereus tetragonus +
Acanthoscyphus +
Acanthoscyphus parishii +
Acanthoscyphus parishii var. abramsii +
Acanthoscyphus parishii var. cienegensis +
Acanthoscyphus parishii var. goodmaniana +
Acanthoscyphus parishii var. parishii +
Acanthospermum +
Acanthospermum australe +
Acanthospermum hispidum +
Acanthospermum humile +
Acaulon muticum +
Acaulon muticum var. muticum +
Acaulon muticum var. rufescens +
Acaulon schimperianum +
Acaulon triquetrum +
Achatocarpaceae +
Achillea alpina +
Achillea millefolium +
Achillea nobilis +
Achillea ptarmica +
Achlys californica +
Achlys triphylla +
Achnatherum +
Achnatherum aridum +
Achnatherum arnowiae +
Achnatherum contractum +
Achnatherum coronatum +
Achnatherum curvifolium +
Achnatherum diegoense +
Achnatherum eminens +
Achnatherum hendersonii +
Achnatherum hymenoides +
Achnatherum latiglume +
Achnatherum lemmonii +
Achnatherum lemmonii subsp. lemmonii +
Achnatherum lemmonii subsp. pubescens +
Achnatherum lettermanii +
Achnatherum lobatum +
Achnatherum nelsonii +
Achnatherum nelsonii subsp. dorei +
Achnatherum nelsonii subsp. nelsonii +
Achnatherum nevadense +
Achnatherum occidentale +
Achnatherum occidentale subsp. californicum +
Achnatherum occidentale subsp. occidentale +
Achnatherum occidentale subsp. pubescens +
Achnatherum parishii +
Achnatherum parishii subsp. depauperatum +
Achnatherum parishii subsp. parishii +
Achnatherum perplexum +
Achnatherum pinetorum +
Achnatherum richardsonii +
Achnatherum robustum +
Achnatherum scribneri +
Achnatherum splendens +
Achnatherum stillmanii +
Achnatherum swallenii +
Achnatherum thurberianum +
Achnatherum wallowaense +
Achnatherum webberi +
Achnatherum ×bloomeri +
Achyrachaena +
Achyrachaena mollis +
Achyranthes +
Achyranthes aspera +
Achyranthes aspera var. aspera +
Achyranthes aspera var. pubescens +
Achyranthes japonica +
Achyronychia +
Achyronychia cooperi +
Acleisanthes +
Acleisanthes acutifolia +
Acleisanthes angustifolia +
Acleisanthes anisophylla +
Acleisanthes chenopodioides +
Acleisanthes crassifolia +
Acleisanthes diffusa +
Acleisanthes lanceolata +
Acleisanthes lanceolata var. lanceolata +
Acleisanthes longiflora +
Acleisanthes nevadensis +
Acleisanthes obtusa +
Acleisanthes parvifolia +
Acleisanthes wrightii +
Acmella pusilla +
Acmella repens +
Acoelorraphe +
Acoelorraphe wrightii +
Aconitum columbianum +
Aconitum columbianum subsp. columbianum +
Aconitum columbianum subsp. viviparum +
Aconitum delphiniifolium +
Aconitum maximum +
Aconitum maximum subsp. maximum +
Aconitum reclinatum +
Aconitum uncinatum +
Aconogonon +
Aconogonon alaskanum +
Aconogonon alaskanum var. alaskanum +
Aconogonon alaskanum var. glabrescens +
Aconogonon davisiae +
Aconogonon davisiae var. davisiae +
Aconogonon davisiae var. glabrum +
Aconogonon phytolaccifolium +
Aconogonon phytolaccifolium var. glabrum +
Aconogonon phytolaccifolium var. phytolaccifolium +
Acorus americanus +
Acorus calamus +
Acourtia microcephala +
Acourtia nana +
Acourtia runcinata +
Acourtia thurberi +
Acourtia wrightii +
Acrachne racemosa +
Acrocomia totai +
Acroporium +
Acroporium smallii +
Acroptilon +
Acroptilon repens +
Acrostichum +
Acrostichum aureum +
Acrostichum danaeifolium +
Actaea pachypoda +
Actaea rubra +
Actinostachys +
Actinostachys pennula +
Adelia vaseyi +
Adenocaulon +
Adenocaulon bicolor +
Adenophyllum +
Adenophyllum cooperi +
Adenophyllum porophylloides +
Adenophyllum wrightii +
Adenophyllum wrightii var. wrightii +
Adenostoma +
Adenostoma fasciculatum +
Adenostoma fasciculatum var. fasciculatum +
Adenostoma fasciculatum var. obtusifolium +
Adenostoma fasciculatum var. prostratum +
Adenostoma sparsifolium +
Adiantum aleuticum +
Adiantum capillus-veneris +
Adiantum hispidulum +
Adiantum jordanii +
Adiantum melanoleucum +
Adiantum pedatum +
Adiantum tenerum +
Adiantum tricholepis +
Adiantum viridimontanum +
Adlumia fungosa +
Adolphia californica +
Adolphia infesta +
Adonis aestivalis +
Adonis annua +
Adonis vernalis +
Aegilops crassa +
Aegilops cylindrica +
Aegilops geniculata +
Aegilops neglecta +
Aegilops tauschii +
Aegilops triuncialis +
Aegilops ventricosa +
Aegopogon tenellus +
Aeluropus littoralis +
Aeonium arboreum +
Aeonium arboreum var. arboreum +
Aeonium haworthii +
Agalinis aphylla +
Agalinis aspera +
Agalinis auriculata +
Agalinis caddoensis +
Agalinis calycina +
Agalinis decemloba +
Agalinis densiflora +
Agalinis divaricata +
Agalinis edwardsiana +
Agalinis fasciculata +
Agalinis filicaulis +
Agalinis filifolia +
Agalinis flexicaulis +
Agalinis gattingeri +
Agalinis georgiana +
Agalinis harperi +
Agalinis heterophylla +
Agalinis homalantha +
Agalinis laxa +
Agalinis linifolia +
Agalinis maritima +
Agalinis maritima var. grandiflora +
Agalinis maritima var. maritima +
Agalinis navasotensis +
Agalinis neoscotica +
Agalinis obtusifolia +
Agalinis oligophylla +
Agalinis plukenetii +
Agalinis pulchella +
Agalinis purpurea +
Agalinis purpurea var. parviflora +
Agalinis purpurea var. purpurea +
Agalinis setacea +
Agalinis skinneriana +
Agalinis strictifolia +
Agalinis tenella +
Agalinis tenuifolia +
Agalinis viridis +
Agarista populifolia +
Agave americana +
Agave americana subsp. americana +
Agave americana subsp. protamericana +
Agave americana var. americana +
Agave americana var. expansa +
Agave asperrima +
Agave asperrima var. asperrima +
Agave chrysantha +
Agave decipiens +
Agave delamateri +
Agave deserti +
Agave deserti var. deserti +
Agave deserti var. simplex +
Agave desmettiana +
Agave gracilipes +
Agave havardiana +
Agave lechuguilla +
Agave mckelveyana +
Agave murpheyi +
Agave neglecta +
Agave palmeri +
Agave parryi +
Agave parryi subsp. neomexicana +
Agave parryi subsp. parryi +
Agave parryi var. couesii +
Agave parryi var. huachucensis +
Agave parryi var. parryi +
Agave parviflora +
Agave parviflora subsp. parviflora +
Agave phillipsiana +
Agave schottii +
Agave schottii var. schottii +
Agave schottii var. treleasei +
Agave shawii +
Agave shawii var. shawii +
Agave sisalana +
Agave toumeyana +
Agave toumeyana var. bella +
Agave toumeyana var. toumeyana +
Agave univittata +
Agave utahensis +
Agave utahensis subsp. kaibabensis +
Agave utahensis subsp. utahensis +
Agave utahensis var. eborispina +
Agave utahensis var. nevadensis +
Agave utahensis var. utahensis +
Agave weberi +
Agave ×ajoensis +
Agave ×arizonica +
Agave ×glomeruliflora +
Agdestis clematidea +
Ageratina adenophora +
Ageratina altissima +
Ageratina altissima var. altissima +
Ageratina altissima var. roanensis +
Ageratina aromatica +
Ageratina havanensis +
Ageratina herbacea +
Ageratina jucunda +
Ageratina lemmonii +
Ageratina luciae-brauniae +
Ageratina occidentalis +
Ageratina paupercula +
Ageratina rothrockii +
Ageratina shastensis +
Ageratina thyrsiflora +
Ageratina wrightii +
Ageratum conyzoides +
Ageratum corymbosum +
Ageratum houstonianum +
Ageratum maritimum +
Agnorhiza bolanderi +
Agnorhiza elata +
Agnorhiza invenusta +
Agnorhiza ovata +
Agnorhiza reticulata +
Agoseris apargioides +
Agoseris apargioides var. apargioides +
Agoseris apargioides var. eastwoodiae +
Agoseris apargioides var. maritima +
Agoseris aurantiaca +
Agoseris aurantiaca var. aurantiaca +
Agoseris aurantiaca var. purpurea +
Agoseris glauca +
Agoseris glauca var. dasycephala +
Agoseris glauca var. glauca +
Agoseris grandiflora +
Agoseris grandiflora var. grandiflora +
Agoseris grandiflora var. leptophylla +
Agoseris heterophylla +
Agoseris heterophylla var. cryptopleura +
Agoseris heterophylla var. heterophylla +
Agoseris heterophylla var. quentinii +
Agoseris hirsuta +
Agoseris monticola +
Agoseris parviflora +
Agoseris retrorsa +
Agoseris ×elata +
Agrimonia gryposepala +
Agrimonia incisa +
Agrimonia microcarpa +
Agrimonia parviflora +
Agrimonia pubescens +
Agrimonia rostellata +
Agrimonia striata +
Agropyron cristatum +
Agropyron fragile +
Agrostemma +
Agrostemma githago +
Agrostemma githago var. githago +
Agrostis anadyrensis +
Agrostis blasdalei +
Agrostis canina +
Agrostis capillaris +
Agrostis castellana +
Agrostis clavata +
Agrostis densiflora +
Agrostis elliottiana +
Agrostis exarata +
Agrostis gigantea +
Agrostis hallii +
Agrostis hendersonii +
Agrostis hooveri +
Agrostis howellii +
Agrostis hyemalis +
Agrostis idahoensis +
Agrostis mertensii +
Agrostis microphylla +
Agrostis nebulosa +
Agrostis oregonensis +
Agrostis pallens +
Agrostis perennans +
Agrostis rossiae +
Agrostis scabra +
Agrostis stolonifera +
Agrostis tolucensis +
Agrostis variabilis +
Agrostis vinealis +
Aira caryophyllea +
Aira caryophyllea var. capillaris +
Aira caryophyllea var. caryophyllea +
Aira caryophyllea var. cupaniana +
Aira praecox +
Akebia quinata +
Alcea rosea +
Alcea rugosa +
Alchemilla +
Alchemilla alpina +
Alchemilla filicaulis +
Alchemilla filicaulis subsp. filicaulis +
Alchemilla filicaulis subsp. vestita +
Alchemilla glabra +
Alchemilla glaucescens +
Alchemilla glomerulans +
Alchemilla micans +
Alchemilla mollis +
Alchemilla monticola +
Alchemilla subcrenata +
Alchemilla venosa +
Alchemilla wichurae +
Alchemilla xanthochlora +
Aletris aurea +
Aletris bracteata +
Aletris farinosa +
Aletris lutea +
Aletris obovata +
Alisma gramineum +
Alisma lanceolatum +
Alisma plantago-aquatica +
Alisma subcordatum +
Alisma triviale +
Alismataceae +
Alkekengi officinarum +
Allamanda cathartica +
Allenrolfea +
Allenrolfea occidentalis +
Alliaria petiolata +
Allionia choisyi +
Allionia incarnata +
Allionia incarnata var. incarnata +
Allionia incarnata var. villosa +
Allium aaseae +
Allium abramsii +
Allium acuminatum +
Allium ampeloprasum +
Allium amplectens +
Allium anceps +
Allium atrorubens +
Allium atrorubens var. atrorubens +
Allium atrorubens var. cristatum +
Allium bigelovii +
Allium bisceptrum +
Allium bolanderi +
Allium bolanderi var. bolanderi +
Allium bolanderi var. mirabile +
Allium brandegeei +
Allium brevistylum +
Allium burlewii +
Allium campanulatum +
Allium canadense +
Allium canadense var. canadense +
Allium canadense var. ecristatum +
Allium canadense var. fraseri +
Allium canadense var. hyacinthoides +
Allium canadense var. lavendulare +
Allium canadense var. mobilense +
Allium cepa +
Allium cernuum +
Allium columbianum +
Allium constrictum +
Allium coryi +
Allium cratericola +
Allium crenulatum +
Allium crispum +
Allium cuthbertii +
Allium denticulatum +
Allium diabolense +
Allium dichlamydeum +
Allium dictuon +
Allium douglasii +
Allium drummondii +
Allium elmendorfii +
Allium falcifolium +
Allium fibrillum +
Allium fimbriatum +
Allium fimbriatum var. fimbriatum +
Allium fimbriatum var. mohavense +
Allium fimbriatum var. purdyi +
Allium fistulosum +
Allium geyeri +
Allium geyeri var. geyeri +
Allium geyeri var. tenerum +
Allium gooddingii +
Allium haematochiton +
Allium hickmanii +
Allium hoffmanii +
Allium howellii +
Allium howellii var. clokeyi +
Allium howellii var. howellii +
Allium howellii var. sanbenitense +
Allium hyalinum +
Allium jepsonii +
Allium kunthii +
Allium lacunosum +
Allium lacunosum var. davisiae +
Allium lacunosum var. kernensis +
Allium lacunosum var. lacunosum +
Allium lacunosum var. micranthum +
Allium lemmonii +
Allium macropetalum +
Allium macrum +
Allium madidum +
Allium membranaceum +
Allium monticola +
Allium munzii +
Allium neapolitanum +
Allium nevadense +
Allium nevii +
Allium nigrum +
Allium obtusum +
Allium obtusum var. conspicuum +
Allium obtusum var. obtusum +
Allium oleraceum +
Allium paniculatum +
Allium paniculatum var. paniculatum +
Allium parishii +
Allium parryi +
Allium parvum +
Allium passeyi +
Allium peninsulare +
Allium peninsulare var. franciscanum +
Allium peninsulare var. peninsulare +
Allium perdulce +
Allium perdulce var. perdulce +
Allium perdulce var. sperryi +
Allium platycaule +
Allium plummerae +
Allium praecox +
Allium punctum +
Allium rhizomatum +
Allium robinsonii +
Allium rotundum +
Allium runyonii +
Allium sanbornii +
Allium sanbornii var. congdonii +
Allium sanbornii var. sanbornii +
Allium sativum +
Allium sativum var. sativum +
Allium schoenoprasum +
Allium scilloides +
Allium serra +
Allium sharsmithiae +
Allium shevockii +
Allium simillimum +
Allium siskiyouense +
Allium speculae +
Allium stellatum +
Allium textile +
Allium tolmiei +
Allium tolmiei var. persimile +
Allium tolmiei var. tolmiei +
Allium tribracteatum +
Allium tricoccum +
Allium tricoccum var. burdickii +
Allium tricoccum var. tricoccum +
Allium triquetrum +
Allium tuberosum +
Allium tuolumnense +
Allium unifolium +
Allium validum +
Allium victorialis +
Allium vineale +
Allium yosemitense +
Allolepis texana +
Alloteropsis +
Alloteropsis cimicina +
Allotropa virgata +
Allowissadula +
Allowissadula holosericea +
Allowissadula lozanoi +
Almutaster +
Almutaster pauciflorus +
Alnus alnobetula +
Alnus alnobetula subsp. crispa +
Alnus alnobetula subsp. fruticosa +
Alnus alnobetula subsp. sinuata +
Alnus glutinosa +
Alnus incana +
Alnus incana subsp. rugosa +
Alnus incana subsp. tenuifolia +
Alnus maritima +
Alnus oblongifolia +
Alnus rhombifolia +
Alnus rubra +
Alnus serrulata +
Aloe ×schonlandii +
Aloina aloides +
Aloina aloides var. ambigua +
Aloina bifrons +
Aloina brevirostris +
Aloina hamulus +
Aloina rigida +
Aloina rigida var. rigida +
Alopecurus +
Alopecurus aequalis +
Alopecurus aequalis var. aequalis +
Alopecurus aequalis var. sonomensis +
Alopecurus arundinaceus +
Alopecurus carolinianus +
Alopecurus creticus +
Alopecurus geniculatus +
Alopecurus magellanicus +
Alopecurus myosuroides +
Alopecurus pratensis +
Alopecurus rendlei +
Alopecurus saccatus +
Alophia drummondii +
Alpinia zerumbet +
Alsia californica +
Alstonia macrophylla +
Alstonia scholaris +
Alstroemeria +
Alstroemeria pulchella +
Alternanthera +
Alternanthera brasiliana +
Alternanthera caracasana +
Alternanthera ficoidea +
Alternanthera ficoidea var. bettzickiana +
Alternanthera flavescens +
Alternanthera maritima +
Alternanthera paronychioides +
Alternanthera philoxeroides +
Alternanthera pungens +
Alternanthera sessilis +
Althaea armeniaca +
Althaea cannabina +
Althaea hirsuta +
Althaea officinalis +
Alvaradoa amorphoides +
Alvaradoa amorphoides subsp. psilophylla +
Alyssum alyssoides +
Alyssum desertorum +
Alyssum murale +
Alyssum obovatum +
Alyssum simplex +
Alyssum szowitsianum +
Amaranthaceae +
Amaranthus +
Amaranthus acanthochiton +
Amaranthus albus +
Amaranthus arenicola +
Amaranthus australis +
Amaranthus blitoides +
Amaranthus blitum +
Amaranthus californicus +
Amaranthus cannabinus +
Amaranthus caudatus +
Amaranthus crassipes +
Amaranthus crispus +
Amaranthus cruentus +
Amaranthus deflexus +
Amaranthus dubius +
Amaranthus fimbriatus +
Amaranthus floridanus +
Amaranthus graecizans +
Amaranthus greggii +
Amaranthus hybridus +
Amaranthus hypochondriacus +
Amaranthus muricatus +
Amaranthus obcordatus +
Amaranthus palmeri +
Amaranthus polygonoides +
Amaranthus powellii +
Amaranthus pumilus +
Amaranthus retroflexus +
Amaranthus scleropoides +
Amaranthus sect. Acanthochiton +
Amaranthus sect. Acnida +
Amaranthus sect. Saueranthus +
Amaranthus spinosus +
Amaranthus subg. Acnida +
Amaranthus subg. Albersia +
Amaranthus subg. Amaranthus +
Amaranthus tamaulipensis +
Amaranthus thunbergii +
Amaranthus torreyi +
Amaranthus tricolor +
Amaranthus tuberculatus +
Amaranthus viridis +
Amaranthus viscidulus +
Amaranthus watsonii +
Amaranthus wrightii +
Amauriopsis +
Amauriopsis dissecta +
Amberboa moschata +
Amblyodon dealbatus +
Amblyolepis +
Amblyolepis setigera +
Amblyopappus +
Amblyopappus pusillus +
Amblystegiaceae +
Amblystegium +
Amblystegium serpens +
Ambrosia acanthicarpa +
Ambrosia ambrosioides +
Ambrosia artemisiifolia +
Ambrosia bidentata +
Ambrosia chamissonis +
Ambrosia cheiranthifolia +
Ambrosia chenopodiifolia +
Ambrosia confertiflora +
Ambrosia cordifolia +
Ambrosia deltoidea +
Ambrosia dumosa +
Ambrosia eriocentra +
Ambrosia grayi +
Ambrosia hispida +
Ambrosia ilicifolia +
Ambrosia linearis +
Ambrosia monogyra +
Ambrosia psilostachya +
Ambrosia pumila +
Ambrosia salsola +
Ambrosia tomentosa +
Ambrosia trifida +
Amelanchier +
Amelanchier alnifolia +
Amelanchier alnifolia var. alnifolia +
Amelanchier alnifolia var. pumila +
Amelanchier alnifolia var. semiintegrifolia +
Amelanchier amabilis +
Amelanchier arborea +
Amelanchier bartramiana +
Amelanchier canadensis +
Amelanchier canadensis var. canadensis +
Amelanchier canadensis var. obovalis +
Amelanchier cusickii +
Amelanchier fernaldii +
Amelanchier gaspensis +
Amelanchier humilis +
Amelanchier interior +
Amelanchier intermedia +
Amelanchier laevis +
Amelanchier nantucketensis +
Amelanchier nitens +
Amelanchier pallida +
Amelanchier sanguinea +
Amelanchier spicata +
Amelanchier utahensis +
Amelichloa +
Amelichloa brachychaeta +
Amelichloa caudata +
Amelichloa clandestina +
Amerorchis +
Amerorchis rotundifolia +
Amianthium +
Amianthium muscitoxicum +
Ammannia auriculata +
Ammannia coccinea +
Ammannia grayi +
Ammannia latifolia +
Ammannia robusta +
Ammophila arenaria +
Ammophila breviligulata +
Ammophila breviligulata subsp. breviligulata +
Ammophila breviligulata subsp. champlainensis +
Amoreuxia gonzalezii +
Amoreuxia palmatifida +
Amoreuxia wrightii +
Ampelaster +
Ampelaster carolinianus +
Ampelodesmos +
Ampelodesmos mauritanicus +
Ampelopsis +
Ampelopsis aconitifolia +
Ampelopsis cordata +
Ampelopsis glandulosa +
Amphiachyris +
Amphiachyris amoena +
Amphiachyris dracunculoides +
Amphibromus +
Amphibromus neesii +
Amphibromus nervosus +
Amphibromus scabrivalvis +
Amphicarpum +
Amphicarpum amphicarpon +
Amphicarpum muhlenbergianum +
Amphidium californicum +
Amphidium lapponicum +
Amphidium mougeotii +
Amphipappus +
Amphipappus fremontii +
Amphipappus fremontii var. fremontii +
Amphipappus fremontii var. spinosus +
Amphiscirpus +
Amphiscirpus nevadensis +
Amsonia arenaria +
Amsonia ciliata +
Amsonia ciliata var. ciliata +
Amsonia ciliata var. filifolia +
Amsonia ciliata var. texana +
Amsonia fugatei +
Amsonia grandiflora +
Amsonia hubrichtii +
Amsonia jonesii +
Amsonia kearneyana +
Amsonia longiflora +
Amsonia longiflora var. longiflora +
Amsonia longiflora var. salpignantha +
Amsonia ludoviciana +
Amsonia palmeri +
Amsonia peeblesii +
Amsonia rigida +
Amsonia subg. Amsonia +
Amsonia subg. Articularia +
Amsonia subg. Sphinctosiphon +
Amsonia tabernaemontana +
Amsonia tabernaemontana var. illustris +
Amsonia tabernaemontana var. repens +
Amsonia tabernaemontana var. salicifolia +
Amsonia tabernaemontana var. tabernaemontana +
Amsonia tharpii +
Amsonia tomentosa +
Amsonia tomentosa var. stenophylla +
Amsonia tomentosa var. tomentosa +
Anacamptodon +
Anacamptodon splachnoides +
Anacolia laevisphaera +
Anacolia menziesii +
Anagallis arvensis +
Anagallis minima +
Anagallis monelli +
Anagallis pumila +
Anaphalis margaritacea +
Ancistrocactus +
Ancistrocactus brevihamatus +
Ancistrocactus scheeri +
Ancistrocarphus +
Ancistrocarphus filagineus +
Ancistrocarphus keilii +
Andreaea alpina +
Andreaea blyttii +
Andreaea heinemannii +
Andreaea megistospora +
Andreaea mutabilis +
Andreaea nivalis +
Andreaea obovata +
Andreaea rothii +
Andreaea rupestris +
Andreaea schofieldiana +
Andreaea sinuosa +
Andreaeaceae +
Andreaeobryaceae +
Andreaeobryum +
Andreaeobryum macrosporum +
Andromeda polifolia +
Andromeda polifolia var. latifolia +
Andromeda polifolia var. polifolia +
Andropogon +
Andropogon arctatus +
Andropogon bicornis +
Andropogon brachystachyus +
Andropogon floridanus +
Andropogon gerardii +
Andropogon glomeratus +
Andropogon glomeratus var. glaucopsis +
Andropogon glomeratus var. glomeratus +
Andropogon glomeratus var. hirsutior +
Andropogon glomeratus var. pumilus +
Andropogon glomeratus var. scabriglumis +
Andropogon gracilis +
Andropogon gyrans +
Andropogon gyrans var. gyrans +
Andropogon gyrans var. stenophyllus +
Andropogon hallii +
Andropogon liebmannii +
Andropogon longiberbis +
Andropogon sect. Andropogon +
Andropogon sect. Leptopogon +
Andropogon ternarius +
Andropogon ternarius var. cabanisii +
Andropogon ternarius var. ternarius +
Andropogon tracyi +
Andropogon virginicus +
Andropogon virginicus var. decipiens +
Andropogon virginicus var. glaucus +
Andropogon virginicus var. virginicus +
Androsace chamaejasme +
Androsace chamaejasme subsp. lehmanniana +
Androsace elongata +
Androsace elongata subsp. acuta +
Androsace filiformis +
Androsace occidentalis +
Androsace septentrionalis +
Androstephium +
Androstephium breviflorum +
Androstephium coeruleum +
Anelsonia eurycarpa +
Anemia adiantifolia +
Anemia mexicana +
Anemia wrightii +
Anemiaceae +
Anemone acutiloba +
Anemone americana +
Anemone berlandieri +
Anemone canadensis +
Anemone caroliniana +
Anemone cylindrica +
Anemone deltoidea +
Anemone drummondii +
Anemone drummondii var. drummondii +
Anemone drummondii var. lithophila +
Anemone edwardsiana +
Anemone edwardsiana var. edwardsiana +
Anemone edwardsiana var. petraea +
Anemone grayi +
Anemone lancifolia +
Anemone lyallii +
Anemone multiceps +
Anemone multifida +
Anemone multifida var. multifida +
Anemone multifida var. saxicola +
Anemone multifida var. stylosa +
Anemone multifida var. tetonensis +
Anemone narcissiflora +
Anemone narcissiflora var. monantha +
Anemone narcissiflora var. villosissima +
Anemone narcissiflora var. zephyra +
Anemone occidentalis +
Anemone okennonii +
Anemone oregana +
Anemone oregana var. felix +
Anemone oregana var. oregana +
Anemone parviflora +
Anemone patens +
Anemone patens var. multifida +
Anemone piperi +
Anemone quinquefolia +
Anemone quinquefolia var. minima +
Anemone quinquefolia var. quinquefolia +
Anemone richardsonii +
Anemone tuberosa +
Anemone virginiana +
Anemone virginiana var. alba +
Anemone virginiana var. cylindroidea +
Anemone virginiana var. virginiana +
Anemopsis californica +
Angadenia berteroi +
Angelonia gardneri +
Aniseia martinicensis +
Anisocarpus +
Anisocarpus madioides +
Anisocarpus scabridus +
Anisocoma acaulis +
Annona glabra +
Annona squamosa +
Annonaceae +
Anoda abutiloides +
Anoda crenatiflora +
Anoda cristata +
Anoda lanceolata +
Anoda pentaschista +
Anoda reticulata +
Anoda thurberi +
Anoectangium +
Anoectangium aestivum +
Anoectangium handelii +
Anoectangium stracheyanum +
Anomobryum +
Anomobryum concinnatum +
Anomobryum julaceum +
Anomodon attenuatus +
Anomodon longifolius +
Anomodon minor +
Anomodon rostratus +
Anomodon rugelii +
Anomodon thraustus +
Anomodon tristis +
Anomodon viticulosus +
Anomodontaceae +
Anredera cordifolia +
Anredera vesicaria +
Antennaria +
Antennaria alpina +
Antennaria anaphaloides +
Antennaria arcuata +
Antennaria argentea +
Antennaria aromatica +
Antennaria corymbosa +
Antennaria densifolia +
Antennaria dimorpha +
Antennaria dioica +
Antennaria flagellaris +
Antennaria friesiana +
Antennaria friesiana subsp. alaskana +
Antennaria friesiana subsp. friesiana +
Antennaria friesiana subsp. neoalaskana +
Antennaria geyeri +
Antennaria howellii +
Antennaria howellii subsp. canadensis +
Antennaria howellii subsp. howellii +
Antennaria howellii subsp. neodioica +
Antennaria howellii subsp. petaloidea +
Antennaria lanata +
Antennaria luzuloides +
Antennaria luzuloides subsp. aberrans +
Antennaria luzuloides subsp. luzuloides +
Antennaria marginata +
Antennaria media +
Antennaria microphylla +
Antennaria monocephala +
Antennaria monocephala subsp. angustata +
Antennaria monocephala subsp. monocephala +
Antennaria neglecta +
Antennaria parlinii +
Antennaria parlinii subsp. fallax +
Antennaria parlinii subsp. parlinii +
Antennaria parvifolia +
Antennaria plantaginifolia +
Antennaria pulchella +
Antennaria pulcherrima +
Antennaria pulcherrima subsp. eucosma +
Antennaria pulcherrima subsp. pulcherrima +
Antennaria racemosa +
Antennaria rosea +
Antennaria rosea subsp. arida +
Antennaria rosea subsp. confinis +
Antennaria rosea subsp. pulvinata +
Antennaria rosea subsp. rosea +
Antennaria rosulata +
Antennaria soliceps +
Antennaria solitaria +
Antennaria stenophylla +
Antennaria suffrutescens +
Antennaria umbrinella +
Antennaria virginica +
Anthemis arvensis +
Anthemis cotula +
Anthenantia +
Anthenantia rufa +
Anthenantia villosa +
Anthephora +
Anthephora hermaphrodita +
Anthoxanthum +
Anthoxanthum arcticum +
Anthoxanthum aristatum +
Anthoxanthum hirtum +
Anthoxanthum monticola +
Anthoxanthum monticola subsp. alpinum +
Anthoxanthum monticola subsp. monticola +
Anthoxanthum nitens +
Anthoxanthum occidentale +
Anthoxanthum odoratum +
Antigonon leptopus +
Antirrhinum +
Antirrhinum majus +
Antitrichia +
Antitrichia californica +
Antitrichia curtipendula +
Anulocaulis +
Anulocaulis annulatus +
Anulocaulis eriosolenus +
Anulocaulis leiosolenus +
Anulocaulis leiosolenus var. gypsogenus +
Anulocaulis leiosolenus var. howardii +
Anulocaulis leiosolenus var. lasianthus +
Anulocaulis leiosolenus var. leiosolenus +
Anulocaulis reflexus +
Aongstroemia +
Aongstroemia longipes +
Apacheria chiricahuensis +
Apera interrupta +
Apera spica-venti +
Aphanes arvensis +
Aphanes australis +
Aphanes occidentalis +
Aphanisma blitoides +
Aphanorrhegma +
Aphanorrhegma serratum +
Aphanostephus +
Aphanostephus pilosus +
Aphanostephus ramosissimus +
Aphanostephus ramosissimus var. humilis +
Aphanostephus ramosissimus var. ramosissimus +
Aphanostephus riddellii +
Aphanostephus skirrhobasis +
Aphanostephus skirrhobasis var. kidderi +
Aphanostephus skirrhobasis var. skirrhobasis +
Aphanostephus skirrhobasis var. thalassius +
Aphragmus eschscholtzianus +
Aplectrum hyemale +
Aplodon wormskioldii +
Apluda mutica +
Apocynaceae +
Apocynum androsaemifolium +
Apocynum cannabinum +
Apocynum ×floribundum +
Apodanthaceae +
Apodanthera +
Apodanthera undulata +
Apodanthera undulata var. undulata +
Aponogeton +
Aponogeton distachyos +
Aponogetonaceae +
Aptenia cordifolia +
Apteria aphylla +
Aquilegia barnebyi +
Aquilegia brevistyla +
Aquilegia canadensis +
Aquilegia chaplinei +
Aquilegia chrysantha +
Aquilegia coerulea +
Aquilegia coerulea var. alpina +
Aquilegia coerulea var. coerulea +
Aquilegia coerulea var. ochroleuca +
Aquilegia coerulea var. pinetorum +
Aquilegia desertorum +
Aquilegia elegantula +
Aquilegia eximia +
Aquilegia flavescens +
Aquilegia formosa +
Aquilegia formosa var. formosa +
Aquilegia formosa var. hypolasia +
Aquilegia formosa var. truncata +
Aquilegia hinckleyana +
Aquilegia jonesii +
Aquilegia laramiensis +
Aquilegia longissima +
Aquilegia micrantha +
Aquilegia pubescens +
Aquilegia saximontana +
Aquilegia scopulorum +
Aquilegia shockleyi +
Aquilegia vulgaris +
Arabidopsis +
Arabidopsis arenicola +
Arabidopsis arenosa +
Arabidopsis arenosa subsp. arenosa +
Arabidopsis lyrata +
Arabidopsis lyrata subsp. kamchatica +
Arabidopsis lyrata subsp. lyrata +
Arabidopsis lyrata subsp. petraea +
Arabidopsis thaliana +
Arabis aculeolata +
Arabis alpina +
Arabis blepharophylla +
Arabis caucasica +
Arabis crucisetosa +
Arabis eschscholtziana +
Arabis furcata +
Arabis georgiana +
Arabis mcdonaldiana +
Arabis modesta +
Arabis nuttallii +
Arabis olympica +
Arabis oregana +
Arabis patens +
Arabis pycnocarpa +
Arabis pycnocarpa var. adpressipilis +
Arabis pycnocarpa var. pycnocarpa +
Arachniodes +
Arachniodes simplicior +
Araujia odorata +
Araujia sericifera +
Arbutus arizonica +
Arbutus menziesii +
Arbutus xalapensis +
Arceuthobium +
Arceuthobium americanum +
Arceuthobium campylopodum +
Arceuthobium campylopodum subsp. abietinum +
Arceuthobium campylopodum subsp. apachecum +
Arceuthobium campylopodum subsp. blumeri +
Arceuthobium campylopodum subsp. californicum +
Arceuthobium campylopodum subsp. campylopodum +
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 +
Arceuthobium divaricatum +
Arceuthobium douglasii +
Arceuthobium gillii +
Arceuthobium pusillum +
Arceuthobium vaginatum +
Arceuthobium vaginatum subsp. cryptopodum +
Archidiaceae +
Archidium alternifolium +
Archidium donnellii +
Archidium hallii +
Archidium minus +
Archidium ohioense +
Archidium tenerrimum +
Arctagrostis +
Arctagrostis latifolia +
Arctagrostis latifolia subsp. arundinacea +
Arctagrostis latifolia subsp. latifolia +
Arctanthemum +
Arctanthemum arcticum +
Arctanthemum arcticum subsp. arcticum +
Arctanthemum arcticum subsp. polare +
Arctium lappa +
Arctium minus +
Arctium tomentosum +
Arctoa anderssonii +
Arctoa fulvella +
Arctoa hyperborea +
Arctomecon +
Arctomecon californica +
Arctomecon humilis +
Arctomecon merriamii +
Arctophila +
Arctophila fulva +
Arctostaphylos +
Arctostaphylos andersonii +
Arctostaphylos auriculata +
Arctostaphylos bakeri +
Arctostaphylos bakeri subsp. bakeri +
Arctostaphylos bakeri subsp. sublaevis +
Arctostaphylos canescens +
Arctostaphylos canescens subsp. canescens +
Arctostaphylos canescens subsp. sonomensis +
Arctostaphylos catalinae +
Arctostaphylos columbiana +
Arctostaphylos confertiflora +
Arctostaphylos crustacea +
Arctostaphylos crustacea subsp. crinita +
Arctostaphylos crustacea subsp. crustacea +
Arctostaphylos crustacea subsp. eastwoodiana +
Arctostaphylos crustacea subsp. insulicola +
Arctostaphylos crustacea subsp. rosei +
Arctostaphylos crustacea subsp. subcordata +
Arctostaphylos cruzensis +
Arctostaphylos densiflora +
Arctostaphylos edmundsii +
Arctostaphylos franciscana +
Arctostaphylos gabilanensis +
Arctostaphylos glandulosa +
Arctostaphylos glandulosa subsp. adamsii +
Arctostaphylos glandulosa subsp. crassifolia +
Arctostaphylos glandulosa subsp. cushingiana +
Arctostaphylos glandulosa subsp. gabrielensis +
Arctostaphylos glandulosa subsp. glandulosa +
Arctostaphylos glandulosa subsp. howellii +
Arctostaphylos glandulosa subsp. leucophylla +
Arctostaphylos glandulosa subsp. mollis +
Arctostaphylos glauca +
Arctostaphylos glutinosa +
Arctostaphylos hispidula +
Arctostaphylos hookeri +
Arctostaphylos hookeri subsp. hearstiorum +
Arctostaphylos hookeri subsp. hookeri +
Arctostaphylos hooveri +
Arctostaphylos imbricata +
Arctostaphylos insularis +
Arctostaphylos klamathensis +
Arctostaphylos luciana +
Arctostaphylos malloryi +
Arctostaphylos manzanita +
Arctostaphylos manzanita subsp. elegans +
Arctostaphylos manzanita subsp. glaucescens +
Arctostaphylos manzanita subsp. laevigata +
Arctostaphylos manzanita subsp. manzanita +
Arctostaphylos manzanita subsp. roofii +
Arctostaphylos manzanita subsp. wieslanderi +
Arctostaphylos mewukka +
Arctostaphylos mewukka subsp. mewukka +
Arctostaphylos mewukka subsp. truei +
Arctostaphylos montana +
Arctostaphylos montana subsp. montana +
Arctostaphylos montana subsp. ravenii +
Arctostaphylos montaraensis +
Arctostaphylos montereyensis +
Arctostaphylos morroensis +
Arctostaphylos myrtifolia +
Arctostaphylos nevadensis +
Arctostaphylos nevadensis subsp. knightii +
Arctostaphylos nevadensis subsp. nevadensis +
Arctostaphylos nissenana +
Arctostaphylos nortensis +
Arctostaphylos nummularia +
Arctostaphylos nummularia subsp. mendocinoensis +
Arctostaphylos nummularia subsp. nummularia +
Arctostaphylos obispoensis +
Arctostaphylos ohloneana +
Arctostaphylos osoensis +
Arctostaphylos otayensis +
Arctostaphylos pacifica +
Arctostaphylos pajaroensis +
Arctostaphylos pallida +
Arctostaphylos parryana +
Arctostaphylos parryana subsp. desertica +
Arctostaphylos parryana subsp. parryana +
Arctostaphylos parryana subsp. tumescens +
Arctostaphylos patula +
Arctostaphylos pechoensis +
Arctostaphylos pilosula +
Arctostaphylos pringlei +
Arctostaphylos pringlei subsp. drupacea +
Arctostaphylos pringlei subsp. pringlei +
Arctostaphylos pumila +
Arctostaphylos pungens +
Arctostaphylos purissima +
Arctostaphylos rainbowensis +
Arctostaphylos refugioensis +
Arctostaphylos regismontana +
Arctostaphylos rudis +
Arctostaphylos sensitiva +
Arctostaphylos silvicola +
Arctostaphylos stanfordiana +
Arctostaphylos stanfordiana subsp. decumbens +
Arctostaphylos stanfordiana subsp. raichei +
Arctostaphylos stanfordiana subsp. stanfordiana +
Arctostaphylos tomentosa +
Arctostaphylos tomentosa subsp. bracteosa +
Arctostaphylos tomentosa subsp. daciticola +
Arctostaphylos tomentosa subsp. hebeclada +
Arctostaphylos tomentosa subsp. tomentosa +
Arctostaphylos uva-ursi +
Arctostaphylos virgata +
Arctostaphylos viridissima +
Arctostaphylos viscida +
Arctostaphylos viscida subsp. mariposa +
Arctostaphylos viscida subsp. pulchella +
Arctostaphylos viscida subsp. viscida +
Arctotheca +
Arctotheca calendula +
Arctotis fastuosa +
Arctotis stoechadifolia +
Arctous alpina +
Arctous rubra +
Ardisia crenata +
Ardisia elliptica +
Ardisia escallonioides +
Ardisia japonica +
Arecaceae (tribe Areceae) subtribe Dypsidinae +
Arecaceae (tribe Areceae) subtribe Ptychospermatinae +
Arecaceae (tribe Areceae) subtribe Roystoneinae +
Arecaceae (tribe Cocoeae) subtribe Bactridinae +
Arecaceae (tribe Cocoeae) subtribe Butiinae +
Arecaceae (tribe Cocoeae) subtribe Elaeidinae +
Arecaceae (tribe Corypheae) subtribe Livistoninae +
Arecaceae (tribe Corypheae) subtribe Sabalinae +
Arecaceae (tribe Corypheae) subtribe Thrinacinae +
Arecaceae subfam. Arecoideae +
Arecaceae subfam. Ceroxyloideae +
Arecaceae subfam. Coryphoideae +
Arecaceae tribe Areceae +
Arecaceae tribe Caryoteae +
Arecaceae tribe Cocoeae +
Arecaceae tribe Corypheae +
Arecaceae tribe Cyclospatheae +
Arecaceae tribe Hyophorbeae +
Arecaceae tribe Phoeniceae +
Arenaria benthamii +
Arenaria humifusa +
Arenaria lanuginosa +
Arenaria lanuginosa var. lanuginosa +
Arenaria lanuginosa var. saxosa +
Arenaria livermorensis +
Arenaria longipedunculata +
Arenaria ludens +
Arenaria paludicola +
Arenaria pseudofrigida +
Arenaria serpyllifolia +
Arenaria serpyllifolia var. serpyllifolia +
Arenaria serpyllifolia var. tenuior +
Arethusa bulbosa +
Argemone aenea +
Argemone albiflora +
Argemone albiflora subsp. albiflora +
Argemone albiflora subsp. texana +
Argemone arizonica +
Argemone aurantiaca +
Argemone chisosensis +
Argemone corymbosa +
Argemone corymbosa subsp. arenicola +
Argemone corymbosa subsp. corymbosa +
Argemone gracilenta +
Argemone hispida +
Argemone mexicana +
Argemone munita +
Argemone munita subsp. argentea +
Argemone munita subsp. munita +
Argemone munita subsp. robusta +
Argemone munita subsp. rotundata +
Argemone ochroleuca +
Argemone pleiacantha +
Argemone pleiacantha subsp. ambigua +
Argemone pleiacantha subsp. pinnatisecta +
Argemone pleiacantha subsp. pleiacantha +
Argemone polyanthemos +
Argemone sanguinea +
Argemone squarrosa +
Argemone squarrosa subsp. glabrata +
Argemone squarrosa subsp. squarrosa +
Argyranthemum +
Argyranthemum foeniculaceum +
Argyreia nervosa +
Argyrochosma +
Argyrochosma dealbata +
Argyrochosma fendleri +
Argyrochosma incana +
Argyrochosma jonesii +
Argyrochosma limitanea +
Argyrochosma limitanea subsp. limitanea +
Argyrochosma limitanea subsp. mexicana +
Argyrochosma microphylla +
Argythamnia +
Argythamnia adenophora +
Argythamnia aphoroides +
Argythamnia argothamnoides +
Argythamnia argyraea +
Argythamnia brandegeei +
Argythamnia brandegeei var. intonsa +
Argythamnia claryana +
Argythamnia cyanophylla +
Argythamnia humilis +
Argythamnia lanceolata +
Argythamnia mercurialina +
Argythamnia mercurialina var. mercurialina +
Argythamnia mercurialina var. pilosissima +
Argythamnia serrata +
Argythamnia simulans +
Arida arizonica +
Arida blepharophylla +
Arida carnosa +
Arida mattturneri +
Arida parviflora +
Arida riparia +
Ariocarpus +
Ariocarpus fissuratus +
Ariocarpus fissuratus var. fissuratus +
Arisaema dracontium +
Arisaema triphyllum +
Aristida adscensionis +
Aristida arizonica +
Aristida basiramea +
Aristida californica +
Aristida californica var. californica +
Aristida californica var. glabrata +
Aristida condensata +
Aristida desmantha +
Aristida dichotoma +
Aristida dichotoma var. curtissii +
Aristida dichotoma var. dichotoma +
Aristida divaricata +
Aristida floridana +
Aristida gypsophila +
Aristida gyrans +
Aristida havardii +
Aristida lanosa +
Aristida longespica +
Aristida longespica var. geniculata +
Aristida longespica var. longespica +
Aristida mohrii +
Aristida oligantha +
Aristida palustris +
Aristida pansa +
Aristida patula +
Aristida purpurascens +
Aristida purpurascens var. purpurascens +
Aristida purpurascens var. tenuispica +
Aristida purpurascens var. virgata +
Aristida purpurea +
Aristida purpurea var. fendleriana +
Aristida purpurea var. longiseta +
Aristida purpurea var. nealleyi +
Aristida purpurea var. parishii +
Aristida purpurea var. perplexa +
Aristida purpurea var. purpurea +
Aristida purpurea var. wrightii +
Aristida ramosissima +
Aristida rhizomophora +
Aristida schiedeana +
Aristida simpliciflora +
Aristida spiciformis +
Aristida stricta +
Aristida ternipes +
Aristida ternipes var. gentilis +
Aristida ternipes var. ternipes +
Aristida tuberculosa +
Aristocapsa +
Aristocapsa insignis +
Aristolochia +
Aristolochia californica +
Aristolochia clematitis +
Aristolochia coryi +
Aristolochia erecta +
Aristolochia macrophylla +
Aristolochia maxima +
Aristolochia pentandra +
Aristolochia reticulata +
Aristolochia serpentaria +
Aristolochia tomentosa +
Aristolochia watsonii +
Aristolochia wrightii +
Aristolochiaceae +
Arivela viscosa +
Armeria maritima +
Armeria maritima subsp. californica +
Armeria maritima subsp. interior +
Armeria maritima subsp. maritima +
Armeria maritima subsp. sibirica +
Armoracia rusticana +
Arnica acaulis +
Arnica angustifolia +
Arnica angustifolia subsp. angustifolia +
Arnica angustifolia subsp. tomentosa +
Arnica cernua +
Arnica chamissonis +
Arnica cordifolia +
Arnica dealbata +
Arnica discoidea +
Arnica fulgens +
Arnica gracilis +
Arnica griscomii +
Arnica griscomii subsp. frigida +
Arnica griscomii subsp. griscomii +
Arnica lanceolata +
Arnica lanceolata subsp. lanceolata +
Arnica lanceolata subsp. prima +
Arnica latifolia +
Arnica lessingii +
Arnica lonchophylla +
Arnica longifolia +
Arnica louiseana +
Arnica mollis +
Arnica nevadensis +
Arnica ovata +
Arnica parryi +
Arnica rydbergii +
Arnica sororia +
Arnica spathulata +
Arnica unalaschcensis +
Arnica venosa +
Arnica viscosa +
Arnoglossum +
Arnoglossum album +
Arnoglossum atriplicifolium +
Arnoglossum diversifolium +
Arnoglossum floridanum +
Arnoglossum ovatum +
Arnoglossum plantagineum +
Arnoglossum reniforme +
Arnoglossum sulcatum +
Arnoseris minima +
Aronia arbutifolia +
Aronia melanocarpa +
Arrhenatherum +
Arrhenatherum elatius +
Arrhenopterum +
Arrhenopterum heterostichum +
Artemisia abrotanum +
Artemisia absinthium +
Artemisia alaskana +
Artemisia aleutica +
Artemisia annua +
Artemisia arbuscula +
Artemisia arbuscula subsp. arbuscula +
Artemisia arbuscula subsp. longiloba +
Artemisia arbuscula subsp. thermopola +
Artemisia biennis +
Artemisia bigelovii +
Artemisia borealis +
Artemisia borealis subsp. borealis +
Artemisia borealis subsp. richardsoniana +
Artemisia californica +
Artemisia campestris +
Artemisia campestris subsp. canadensis +
Artemisia campestris subsp. caudata +
Artemisia campestris subsp. pacifica +
Artemisia cana +
Artemisia cana subsp. bolanderi +
Artemisia cana subsp. cana +
Artemisia cana subsp. viscidula +
Artemisia carruthii +
Artemisia douglasiana +
Artemisia dracunculus +
Artemisia filifolia +
Artemisia franserioides +
Artemisia frigida +
Artemisia furcata +
Artemisia globularia +
Artemisia globularia subsp. globularia +
Artemisia globularia subsp. lutea +
Artemisia glomerata +
Artemisia laciniata +
Artemisia laciniata subsp. laciniata +
Artemisia laciniata subsp. parryi +
Artemisia longifolia +
Artemisia ludoviciana +
Artemisia ludoviciana subsp. albula +
Artemisia ludoviciana subsp. candicans +
Artemisia ludoviciana subsp. incompta +
Artemisia ludoviciana subsp. ludoviciana +
Artemisia ludoviciana subsp. mexicana +
Artemisia ludoviciana subsp. redolens +
Artemisia michauxiana +
Artemisia nesiotica +
Artemisia norvegica +
Artemisia norvegica subsp. saxatilis +
Artemisia nova +
Artemisia packardiae +
Artemisia palmeri +
Artemisia papposa +
Artemisia pattersonii +
Artemisia pedatifida +
Artemisia pontica +
Artemisia porteri +
Artemisia pycnocephala +
Artemisia pygmaea +
Artemisia rigida +
Artemisia rothrockii +
Artemisia rupestris +
Artemisia scopulorum +
Artemisia senjavinensis +
Artemisia serrata +
Artemisia spiciformis +
Artemisia stelleriana +
Artemisia subg. Absinthium +
Artemisia subg. Artemisia +
Artemisia subg. Drancunculus +
Artemisia subg. Tridentatae +
Artemisia suksdorfii +
Artemisia tilesii +
Artemisia tridentata +
Artemisia tridentata subsp. parishii +
Artemisia tridentata subsp. tridentata +
Artemisia tridentata subsp. vaseyana +
Artemisia tridentata subsp. wyomingensis +
Artemisia tripartita +
Artemisia tripartita subsp. rupicola +
Artemisia tripartita subsp. tripartita +
Artemisia vulgaris +
Arthraxon hispidus +
Arthrocnemum +
Arthrocnemum subterminale +
Aruncus dioicus +
Aruncus dioicus var. acuminatus +
Aruncus dioicus var. dioicus +
Aruncus dioicus var. pubescens +
Aruncus dioicus var. vulgaris +
Arundinaria +
Arundinaria appalachiana +
Arundinaria gigantea +
Arundinaria tecta +
Arundo donax +
Asanthus squamulosus +
Asarum canadense +
Asarum caudatum +
Asarum hartwegii +
Asarum lemmonii +
Asarum marmoratum +
Asarum wagneri +
Aschisma kansanum +
Asclepias albicans +
Asclepias amplexicaulis +
Asclepias angustifolia +
Asclepias arenaria +
Asclepias asperula +
Asclepias asperula subsp. asperula +
Asclepias asperula subsp. capricornu +
Asclepias brachystephana +
Asclepias californica +
Asclepias californica subsp. californica +
Asclepias californica subsp. greenei +
Asclepias cinerea +
Asclepias connivens +
Asclepias cordifolia +
Asclepias cryptoceras +
Asclepias cryptoceras subsp. cryptoceras +
Asclepias cryptoceras subsp. davisii +
Asclepias curassavica +
Asclepias curtissii +
Asclepias cutleri +
Asclepias eastwoodiana +
Asclepias elata +
Asclepias emoryi +
Asclepias engelmanniana +
Asclepias eriocarpa +
Asclepias erosa +
Asclepias exaltata +
Asclepias fascicularis +
Asclepias feayi +
Asclepias hallii +
Asclepias hirtella +
Asclepias humistrata +
Asclepias hypoleuca +
Asclepias incarnata +
Asclepias incarnata subsp. incarnata +
Asclepias incarnata subsp. pulchra +
Asclepias involucrata +
Asclepias labriformis +
Asclepias lanceolata +
Asclepias lanuginosa +
Asclepias latifolia +
Asclepias lemmonii +
Asclepias linaria +
Asclepias linearis +
Asclepias longifolia +
Asclepias macrosperma +
Asclepias macrotis +
Asclepias meadii +
Asclepias michauxii +
Asclepias nummularia +
Asclepias nyctaginifolia +
Asclepias obovata +
Asclepias oenotheroides +
Asclepias ovalifolia +
Asclepias pedicellata +
Asclepias perennis +
Asclepias prostrata +
Asclepias pumila +
Asclepias purpurascens +
Asclepias quadrifolia +
Asclepias quinquedentata +
Asclepias rubra +
Asclepias rusbyi +
Asclepias ruthiae +
Asclepias sanjuanensis +
Asclepias scaposa +
Asclepias solanoana +
Asclepias speciosa +
Asclepias sperryi +
Asclepias stenophylla +
Asclepias subulata +
Asclepias subverticillata +
Asclepias sullivantii +
Asclepias syriaca +
Asclepias texana +
Asclepias tomentosa +
Asclepias tuberosa +
Asclepias tuberosa subsp. interior +
Asclepias tuberosa subsp. rolfsii +
Asclepias tuberosa subsp. tuberosa +
Asclepias uncialis +
Asclepias variegata +
Asclepias verticillata +
Asclepias vestita +
Asclepias viridiflora +
Asclepias viridis +
Asclepias viridula +
Asclepias welshii +
Asemeia grandiflora +
Asimina incana +
Asimina longifolia +
Asimina longifolia var. longifolia +
Asimina longifolia var. spatulata +
Asimina obovata +
Asimina parviflora +
Asimina pygmaea +
Asimina reticulata +
Asimina tetramera +
Asimina triloba +
Asparagus aethiopicus +
Asparagus asparagoides +
Asparagus officinalis +
Asparagus setaceus +
Asphodelus +
Asphodelus fistulosus +
Aspicarpa hirtella +
Aspicarpa hyssopifolia +
Aspidotis californica +
Aspidotis carlotta-halliae +
Aspidotis densa +
Aspleniaceae +
Asplenium abscissum +
Asplenium adiantum-nigrum +
Asplenium adulterinum +
Asplenium auritum +
Asplenium bradleyi +
Asplenium cristatum +
Asplenium dalhousiae +
Asplenium ebenoides +
Asplenium exiguum +
Asplenium heterochroum +
Asplenium monanthes +
Asplenium montanum +
Asplenium palmeri +
Asplenium pinnatifidum +
Asplenium platyneuron +
Asplenium plenum +
Asplenium pumilum +
Asplenium resiliens +
Asplenium rhizophyllum +
Asplenium ruta-muraria +
Asplenium scolopendrium +
Asplenium scolopendrium var. americanum +
Asplenium septentrionale +
Asplenium serratum +
Asplenium trichomanes +
Asplenium trichomanes subsp. quadrivalens +
Asplenium trichomanes subsp. trichomanes +
Asplenium trichomanes-dentatum +
Asplenium trichomanes-ramosum +
Asplenium verecundum +
Asplenium vespertinum +
Asplenium ×biscayneanum +
Asplenium ×curtissii +
Asplenium ×heteroresiliens +
Aster alpinus +
Aster alpinus subsp. vierhapperi +
Aster tataricus +
Asteraceae +
Asteraceae (tribe Heliantheae) subtribe Ambrosiinae +
Asteraceae (tribe Heliantheae) subtribe Baeriinae +
Asteraceae (tribe Heliantheae) subtribe Chaenactidinae +
Asteraceae (tribe Heliantheae) subtribe Clappiinae +
Asteraceae (tribe Heliantheae) subtribe Coreopsidinae +
Asteraceae (tribe Heliantheae) subtribe Dimeresiinae +
Asteraceae (tribe Heliantheae) subtribe Ecliptinae +
Asteraceae (tribe Heliantheae) subtribe Flaveriinae +
Asteraceae (tribe Heliantheae) subtribe Gaillardiinae +
Asteraceae (tribe Heliantheae) subtribe Galinsoginae +
Asteraceae (tribe Heliantheae) subtribe Guardiolinae +
Asteraceae (tribe Heliantheae) subtribe Helianthinae +
Asteraceae (tribe Heliantheae) subtribe Hymenopappinae +
Asteraceae (tribe Heliantheae) subtribe Jaumeinae +
Asteraceae (tribe Heliantheae) subtribe Madiinae +
Asteraceae (tribe Heliantheae) subtribe Marshalliinae +
Asteraceae (tribe Heliantheae) subtribe Melampodiinae +
Asteraceae (tribe Heliantheae) subtribe Milleriinae +
Asteraceae (tribe Heliantheae) subtribe Pectidinae +
Asteraceae (tribe Heliantheae) subtribe Peritylinae +
Asteraceae (tribe Heliantheae) subtribe Polymniinae +
Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae +
Asteraceae (tribe Heliantheae) subtribe Varillinae +
Asteraceae (tribe Heliantheae) subtribe Zaluzaniinae +
Asteraceae tribe Anthemideae +
Asteraceae tribe Arctotideae +
Asteraceae tribe Astereae +
Asteraceae tribe Calenduleae +
Asteraceae tribe Cardueae +
Asteraceae tribe Cichorieae +
Asteraceae tribe Eupatorieae +
Asteraceae tribe Gnaphalieae +
Asteraceae tribe Heliantheae +
Asteraceae tribe Inuleae +
Asteraceae tribe Mutisieae +
Asteraceae tribe Plucheeae +
Asteraceae tribe Senecioneae +
Asteraceae tribe Vernonieae +
Astilbe biternata +
Astraea lobata +
Astranthium +
Astranthium ciliatum +
Astranthium integrifolium +
Astranthium robustum +
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 +
Astrophytum +
Astrophytum asterias +
Atamisquea +
Atamisquea emarginata +
Athyrium distentifolium +
Athyrium distentifolium var. americanum +
Athyrium filix-femina +
Athyrium filix-femina var. angustum +
Athyrium filix-femina var. asplenioides +
Athyrium filix-femina var. californicum +
Athyrium filix-femina var. cyclosorum +
Athysanus pusillus +
Athysanus unilateralis +
Atrichoseris +
Atrichoseris platyphylla +
Atrichum altecristatum +
Atrichum angustatum +
Atrichum crispulum +
Atrichum crispum +
Atrichum cylindricum +
Atrichum flavisetum +
Atrichum selwynii +
Atrichum tenellum +
Atrichum undulatum +
Atriplex acanthocarpa +
Atriplex acanthocarpa var. acanthocarpa +
Atriplex acanthocarpa var. coahuilensis +
Atriplex amnicola +
Atriplex argentea +
Atriplex argentea var. argentea +
Atriplex argentea var. hillmanii +
Atriplex argentea var. longitrichoma +
Atriplex argentea var. mohavensis +
Atriplex argentea var. rydbergii +
Atriplex californica +
Atriplex canescens +
Atriplex canescens var. canescens +
Atriplex canescens var. gigantea +
Atriplex canescens var. laciniata +
Atriplex canescens var. macilenta +
Atriplex confertifolia +
Atriplex cordulata +
Atriplex cordulata var. cordulata +
Atriplex cordulata var. erecticaulis +
Atriplex coronata +
Atriplex coronata var. coronata +
Atriplex coronata var. notatior +
Atriplex coronata var. vallicola +
Atriplex corrugata +
Atriplex coulteri +
Atriplex covillei +
Atriplex dioica +
Atriplex elegans +
Atriplex elegans var. elegans +
Atriplex elegans var. fasciculata +
Atriplex fruticulosa +
Atriplex gardneri +
Atriplex gardneri var. aptera +
Atriplex gardneri var. bonnevillensis +
Atriplex gardneri var. cuneata +
Atriplex gardneri var. falcata +
Atriplex gardneri var. gardneri +
Atriplex gardneri var. utahensis +
Atriplex gardneri var. welshii +
Atriplex garrettii +
Atriplex garrettii var. garrettii +
Atriplex garrettii var. navajoensis +
Atriplex glabriuscula +
Atriplex glabriuscula var. acadiensis +
Atriplex glabriuscula var. franktonii +
Atriplex glabriuscula var. glabriuscula +
Atriplex gmelinii +
Atriplex gmelinii var. alaskensis +
Atriplex gmelinii var. gmelinii +
Atriplex graciliflora +
Atriplex heterosperma +
Atriplex holocarpa +
Atriplex hortensis +
Atriplex hymenelytra +
Atriplex joaquiniana +
Atriplex klebergorum +
Atriplex laciniata +
Atriplex lentiformis +
Atriplex leucophylla +
Atriplex lindleyi +
Atriplex linearis +
Atriplex littoralis +
Atriplex matamorensis +
Atriplex mucronata +
Atriplex nudicaulis +
Atriplex nummularia +
Atriplex oblongifolia +
Atriplex obovata +
Atriplex pacifica +
Atriplex parishii +
Atriplex parishii var. depressa +
Atriplex parishii var. minuscula +
Atriplex parishii var. parishii +
Atriplex parishii var. persistens +
Atriplex parishii var. subtilis +
Atriplex parryi +
Atriplex patula +
Atriplex pentandra +
Atriplex phyllostegia +
Atriplex pleiantha +
Atriplex polycarpa +
Atriplex powellii +
Atriplex powellii var. minuticarpa +
Atriplex powellii var. powellii +
Atriplex prostrata +
Atriplex pusilla +
Atriplex rosea +
Atriplex saccaria +
Atriplex saccaria var. asterocarpa +
Atriplex saccaria var. cornuta +
Atriplex saccaria var. saccaria +
Atriplex sect. Atriplex +
Atriplex sect. Covilleiae +
Atriplex sect. Dialysex +
Atriplex sect. Endolepis +
Atriplex sect. Obione +
Atriplex sect. Phyllostegiae +
Atriplex sect. Pleianthae +
Atriplex sect. Sclerocalymma +
Atriplex sect. Semibaccata +
Atriplex sect. Spongiocarpus +
Atriplex sect. Teutliopsis +
Atriplex semibaccata +
Atriplex serenana +
Atriplex serenana var. davidsonii +
Atriplex serenana var. serenana +
Atriplex spinifera +
Atriplex suberecta +
Atriplex subg. Atriplex +
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 suckleyi +
Atriplex tatarica +
Atriplex torreyi +
Atriplex torreyi var. griffithsii +
Atriplex torreyi var. torreyi +
Atriplex truncata +
Atriplex tularensis +
Atriplex watsonii +
Atriplex wolfii +
Atriplex wolfii var. tenuissima +
Atriplex wolfii var. wolfii +
Atriplex wrightii +
Atropa belladonna +
Aubrieta deltoidea +
Aucuba japonica +
Aulacomniaceae +
Aulacomnium +
Aulacomnium acuminatum +
Aulacomnium androgynum +
Aulacomnium palustre +
Aulacomnium turgidum +
Aureolaria +
Aureolaria flava +
Aureolaria grandiflora +
Aureolaria levigata +
Aureolaria patula +
Aureolaria pectinata +
Aureolaria pedicularia +
Aureolaria virginica +
Aurinia petraea +
Aurinia saxatilis +
Austrostipa +
Austrostipa elegantissima +
Austrostipa ramosissima +
Avena barbata +
Avena fatua +
Avena hybrida +
Avena occidentalis +
Avena sativa +
Avena sterilis +
Avenula hookeri +
Avenula pubescens +
Axonopus compressus +
Axonopus fissifolius +
Axonopus furcatus +
Axonopus scoparius +
Axyris amaranthoides +
Ayenia compacta +
Ayenia euphrasiifolia +
Ayenia filiformis +
Ayenia jaliscana +
Ayenia limitaris +
Ayenia microphylla +
Ayenia pilosa +
Azolla caroliniana +
Azolla filiculoides +
Azolla mexicana +
Azollaceae +
B
Baccharis angustifolia +
Baccharis bigelovii +
Baccharis brachyphylla +
Baccharis dioica +
Baccharis douglasii +
Baccharis glomeruliflora +
Baccharis glutinosa +
Baccharis halimifolia +
Baccharis havardii +
Baccharis malibuensis +
Baccharis neglecta +
Baccharis pilularis +
Baccharis pilularis subsp. consanguinea +
Baccharis pilularis subsp. pilularis +
Baccharis plummerae +
Baccharis plummerae subsp. glabrata +
Baccharis plummerae subsp. plummerae +
Baccharis pteronioides +
Baccharis salicifolia +
Baccharis salicina +
Baccharis sarothroides +
Baccharis sergiloides +
Baccharis texana +
Baccharis thesioides +
Baccharis vanessae +
Baccharis wrightii +
Bacopa caroliniana +
Bacopa egensis +
Bacopa eisenii +
Bacopa innominata +
Bacopa monnieri +
Bacopa repens +
Bacopa rotundifolia +
Bahia absinthifolia +
Bahia bigelovii +
Bahia biternata +
Bahia pedata +
Bahiopsis laciniata +
Bahiopsis parishii +
Bahiopsis reticulata +
Baileya multiradiata +
Baileya pauciradiata +
Baileya pleniradiata +
Balduina angustifolia +
Balduina atropurpurea +
Balduina uniflora +
Balsamorhiza +
Balsamorhiza careyana +
Balsamorhiza deltoidea +
Balsamorhiza hispidula +
Balsamorhiza hookeri +
Balsamorhiza incana +
Balsamorhiza lanata +
Balsamorhiza macrolepis +
Balsamorhiza macrophylla +
Balsamorhiza rosea +
Balsamorhiza sagittata +
Balsamorhiza sericea +
Balsamorhiza serrata +
Balsamorhiza subg. Artorhiza +
Balsamorhiza subg. Balsamorhiza +
Bambusa bambos +
Bambusa multiplex +
Bambusa oldhamii +
Bambusa vulgaris +
Barbarea orthoceras +
Barbarea stricta +
Barbarea verna +
Barbarea vulgaris +
Barbella pendula +
Barbula amplexifolia +
Barbula bolleana +
Barbula convoluta +
Barbula convoluta var. convoluta +
Barbula convoluta var. eustegia +
Barbula convoluta var. gallinula +
Barbula indica +
Barbula indica var. gregaria +
Barbula indica var. indica +
Barbula orizabensis +
Barbula unguiculata +
Barkleyanthus +
Barkleyanthus salicifolius +
Bartlettia +
Bartlettia scaposa +
Bartonia paniculata +
Bartonia paniculata subsp. iodandra +
Bartonia paniculata subsp. paniculata +
Bartonia paniculata subsp. texana +
Bartonia verna +
Bartonia virginica +
Bartramia brevifolia +
Bartramia halleriana +
Bartramia ithyphylla +
Bartramia pomiformis +
Bartramia potosica +
Bartramia stricta +
Bartramia subulata +
Bartramiaceae +
Bartramiopsis +
Bartramiopsis lescurii +
Bartsia alpina +
Basellaceae +
Basiphyllaea +
Basiphyllaea corallicola +
Bassia hirsuta +
Bassia hyssopifolia +
Bastardia viscosa +
Batesimalva +
Batesimalva violacea +
Batis maritima +
Bebbia juncea +
Bebbia juncea var. aspera +
Beckmannia +
Beckmannia syzigachne +
Begonia cucullata +
Begonia hirtella +
Begoniaceae +
Bejaria racemosa +
Belamcanda +
Belamcanda chinensis +
Bellardia latifolia +
Bellardia trixago +
Bellardia viscosa +
Bellibarbula +
Bellibarbula recurva +
Bellis perennis +
Beloglottis +
Beloglottis costaricensis +
Benitoa occidentalis +
Bensoniella +
Bensoniella oregona +
Berberidaceae +
Berberis amplectens +
Berberis aquifolium +
Berberis bealei +
Berberis canadensis +
Berberis darwinii +
Berberis dictyota +
Berberis fendleri +
Berberis fremontii +
Berberis haematocarpa +
Berberis harrisoniana +
Berberis higginsiae +
Berberis nervosa +
Berberis nevinii +
Berberis pinnata +
Berberis pinnata subsp. insularis +
Berberis pinnata subsp. pinnata +
Berberis piperiana +
Berberis pumila +
Berberis repens +
Berberis swaseyi +
Berberis thunbergii +
Berberis trifoliolata +
Berberis vulgaris +
Berberis wilcoxii +
Berchemia scandens +
Bergerocactus +
Bergerocactus emoryi +
Bergia texana +
Berlandiera +
Berlandiera lyrata +
Berlandiera monocephala +
Berlandiera pumila +
Berlandiera subacaulis +
Berlandiera texana +
Berlandiera ×betonicifolia +
Berlandiera ×humilis +
Berlandiera ×macrophylla +
Bernardia incana +
Bernardia myricifolia +
Bernardia obovata +
Berteroa incana +
Bestia longipes +
Beta vulgaris +
Beta vulgaris subsp. maritima +
Beta vulgaris subsp. vulgaris +
Betula alleghaniensis +
Betula cordifolia +
Betula glandulosa +
Betula kenaica +
Betula lenta +
Betula michauxii +
Betula minor +
Betula murrayana +
Betula nana +
Betula nana subsp. exilis +
Betula nana subsp. nana +
Betula neoalaskana +
Betula nigra +
Betula occidentalis +
Betula papyrifera +
Betula pendula +
Betula populifolia +
Betula pubescens +
Betula pubescens subsp. pubescens +
Betula pubescens subsp. tortuosa +
Betula pumila +
Betula uber +
Betulaceae +
Betulaceae subfam. Betuloideae +
Betulaceae subfam. Coryloideae +
Bidens amplissima +
Bidens aristosa +
Bidens aurea +
Bidens beckii +
Bidens bidentoides +
Bidens bigelovii +
Bidens bipinnata +
Bidens cernua +
Bidens connata +
Bidens discoidea +
Bidens eatonii +
Bidens frondosa +
Bidens heterodoxa +
Bidens heterosperma +
Bidens hyperborea +
Bidens laevis +
Bidens lemmonii +
Bidens leptocephala +
Bidens mitis +
Bidens pilosa +
Bidens polylepis +
Bidens tenuisecta +
Bidens trichosperma +
Bidens tripartita +
Bidens vulgata +
Bigelowia nudata +
Bigelowia nudata var. australis +
Bigelowia nudata var. nudata +
Bigelowia nuttallii +
Billieturnera +
Billieturnera helleri +
Bischofia javanica +
Bistorta bistortoides +
Bistorta officinalis +
Bistorta plumosa +
Bistorta vivipara +
Blechnaceae +
Blechnum occidentale +
Blechnum occidentale var. minor +
Blechnum serrulatum +
Blechnum spicant +
Blennosperma +
Blennosperma bakeri +
Blennosperma nanum +
Blennosperma nanum var. nanum +
Blennosperma nanum var. robustum +
Blepharidachne +
Blepharidachne bigelovii +
Blepharidachne kingii +
Blepharipappus +
Blepharipappus scaber +
Blepharizonia +
Blepharizonia laxa +
Blepharizonia plumosa +
Blepharoneuron +
Blepharoneuron tricholepis +
Bletia patula +
Bletia purpurea +
Blindia acuta +
Bloomeria clevelandii +
Bloomeria crocea +
Bloomeria crocea var. aurea +
Bloomeria crocea var. crocea +
Bloomeria crocea var. montana +
Bloomeria humilis +
Blutaparon +
Blutaparon vermiculare +
Blysmopsis +
Blysmopsis rufa +
Blyxa aubertii +
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 collinsii +
Boechera consanguinea +
Boechera constancei +
Boechera covillei +
Boechera crandallii +
Boechera cusickii +
Boechera davidsonii +
Boechera dentata +
Boechera depauperata +
Boechera dispar +
Boechera divaricarpa +
Boechera drepanoloba +
Boechera duchesnensis +
Boechera elkoensis +
Boechera evadens +
Boechera falcatoria +
Boechera falcifructa +
Boechera fecunda +
Boechera fendleri +
Boechera fernaldiana +
Boechera fernaldiana subsp. fernaldiana +
Boechera fernaldiana subsp. vivariensis +
Boechera formosa +
Boechera fructicosa +
Boechera glareosa +
Boechera glaucovalvula +
Boechera goodrichii +
Boechera gracilenta +
Boechera gracilipes +
Boechera grahamii +
Boechera gunnisoniana +
Boechera harrisonii +
Boechera hastatula +
Boechera hoffmannii +
Boechera holboellii +
Boechera horizontalis +
Boechera howellii +
Boechera inyoensis +
Boechera johnstonii +
Boechera koehleri +
Boechera laevigata +
Boechera languida +
Boechera lasiocarpa +
Boechera lemmonii +
Boechera lignifera +
Boechera lincolnensis +
Boechera lyallii +
Boechera macounii +
Boechera microphylla +
Boechera missouriensis +
Boechera nevadensis +
Boechera ophira +
Boechera oxylobula +
Boechera paddoensis +
Boechera pallidifolia +
Boechera parishii +
Boechera pauciflora +
Boechera paupercula +
Boechera peirsonii +
Boechera pendulina +
Boechera pendulocarpa +
Boechera perennans +
Boechera perstellata +
Boechera pinetorum +
Boechera pinzliae +
Boechera platysperma +
Boechera polyantha +
Boechera porphyrea +
Boechera pratincola +
Boechera puberula +
Boechera pulchra +
Boechera pusilla +
Boechera pygmaea +
Boechera quebecensis +
Boechera rectissima +
Boechera repanda +
Boechera retrofracta +
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 +
Boehmeria cylindrica +
Boehmeria nivea +
Boerhavia anisophylla +
Boerhavia ciliata +
Boerhavia coccinea +
Boerhavia coulteri +
Boerhavia coulteri var. coulteri +
Boerhavia coulteri var. palmeri +
Boerhavia diffusa +
Boerhavia erecta +
Boerhavia gracillima +
Boerhavia intermedia +
Boerhavia linearifolia +
Boerhavia megaptera +
Boerhavia pterocarpa +
Boerhavia purpurascens +
Boerhavia spicata +
Boerhavia torreyana +
Boerhavia triquetra +
Boerhavia wrightii +
Bolandra californica +
Bolandra oregana +
Bolboschoenus +
Bolboschoenus fluviatilis +
Bolboschoenus glaucus +
Bolboschoenus maritimus +
Bolboschoenus maritimus subsp. maritimus +
Bolboschoenus maritimus subsp. paludosus +
Bolboschoenus novae-angliae +
Bolboschoenus robustus +
Boltonia apalachicolensis +
Boltonia asteroides +
Boltonia asteroides var. asteroides +
Boltonia asteroides var. latisquama +
Boltonia asteroides var. recognita +
Boltonia caroliniana +
Boltonia decurrens +
Boltonia diffusa +
Boltonia diffusa var. diffusa +
Boltonia diffusa var. interior +
Bommeria hispida +
Bonamia grandiflora +
Bonamia ovalifolia +
Bonellia macrocarpa +
Bonellia macrocarpa subsp. macrocarpa +
Bontia daphnoides +
Borrichia arborescens +
Borrichia frutescens +
Borrichia ×cubana +
Boschniakia +
Boschniakia rossica +
Bothriochloa +
Bothriochloa alta +
Bothriochloa barbinodis +
Bothriochloa bladhii +
Bothriochloa edwardsiana +
Bothriochloa exaristata +
Bothriochloa hybrida +
Bothriochloa ischaemum +
Bothriochloa laguroides +
Bothriochloa longipaniculata +
Bothriochloa pertusa +
Bothriochloa springfieldii +
Bothriochloa wrightii +
Botrychium +
Botrychium acuminatum +
Botrychium ascendens +
Botrychium biternatum +
Botrychium boreale +
Botrychium campestre +
Botrychium crenulatum +
Botrychium dissectum +
Botrychium echo +
Botrychium gallicomontanum +
Botrychium hesperium +
Botrychium jenmanii +
Botrychium lanceolatum +
Botrychium lanceolatum subsp. angustisegmentum +
Botrychium lanceolatum subsp. lanceolatum +
Botrychium lunaria +
Botrychium lunarioides +
Botrychium matricariifolium +
Botrychium minganense +
Botrychium montanum +
Botrychium mormo +
Botrychium multifidum +
Botrychium oneidense +
Botrychium pallidum +
Botrychium paradoxum +
Botrychium pedunculosum +
Botrychium pinnatum +
Botrychium pseudopinnatum +
Botrychium pumicola +
Botrychium rugulosum +
Botrychium sect. Hiemobotrychium +
Botrychium sect. Sceptridium +
Botrychium simplex +
Botrychium spathulatum +
Botrychium subg. Botrychium +
Botrychium subg. Osmundopteris +
Botrychium subg. Sceptridium +
Botrychium virginianum +
Bouchetia erecta +
Bouteloua aristidoides +
Bouteloua aristidoides var. aristidoides +
Bouteloua aristidoides var. arizonica +
Bouteloua barbata +
Bouteloua barbata var. barbata +
Bouteloua barbata var. rothrockii +
Bouteloua breviseta +
Bouteloua chondrosoides +
Bouteloua curtipendula +
Bouteloua curtipendula var. caespitosa +
Bouteloua curtipendula var. curtipendula +
Bouteloua eludens +
Bouteloua eriopoda +
Bouteloua gracilis +
Bouteloua hirsuta +
Bouteloua hirsuta subsp. hirsuta +
Bouteloua hirsuta subsp. pectinata +
Bouteloua kayi +
Bouteloua parryi +
Bouteloua radicosa +
Bouteloua ramosa +
Bouteloua repens +
Bouteloua rigidiseta +
Bouteloua simplex +
Bouteloua subg. Bouteloua +
Bouteloua subg. Chondrosum +
Bouteloua trifida +
Bouteloua trifida var. burkii +
Bouteloua trifida var. trifida +
Bouteloua uniflora +
Bouteloua warnockii +
Boykinia aconitifolia +
Boykinia intermedia +
Boykinia major +
Boykinia occidentalis +
Boykinia richardsonii +
Boykinia rotundifolia +
Brachelyma +
Brachelyma subulatum +
Brachychiton +
Brachychiton populneus +
Brachydontium +
Brachydontium olympicum +
Brachydontium trichodes +
Brachyelytrum +
Brachyelytrum aristosum +
Brachyelytrum erectum +
Brachymenium +
Brachymenium macrocarpum +
Brachymenium mexicanum +
Brachypodium +
Brachypodium distachyon +
Brachypodium phoenicoides +
Brachypodium pinnatum +
Brachypodium rupestre +
Brachypodium sylvaticum +
Brachystigma +
Brachystigma wrightii +
Brachytheciaceae +
Brachytheciastrum +
Brachytheciastrum collinum +
Brachytheciastrum delicatulum +
Brachytheciastrum fendleri +
Brachytheciastrum leibergii +
Brachytheciastrum trachypodium +
Brachytheciastrum velutinum +
Brachytheciastrum velutinum var. salicinum +
Brachytheciastrum velutinum var. velutinum +
Brachythecium +
Brachythecium acuminatum +
Brachythecium acutum +
Brachythecium albicans +
Brachythecium asperrimum +
Brachythecium bolanderi +
Brachythecium boreale +
Brachythecium brandegeei +
Brachythecium campestre +
Brachythecium cirrosum +
Brachythecium coruscum +
Brachythecium erythrorrhizon +
Brachythecium erythrorrhizon var. alpinum +
Brachythecium erythrorrhizon var. erythrorrhizon +
Brachythecium frigidum +
Brachythecium jacuticum +
Brachythecium laetum +
Brachythecium rivulare +
Brachythecium rotaeanum +
Brachythecium ruderale +
Brachythecium rutabulum +
Brachythecium salebrosum +
Brachythecium turgidum +
Brachythecium udum +
Bradburia hirtella +
Bradburia pilosa +
Brandegea bigelovii +
Brasenia schreberi +
Brassia caudata +
Brassica elongata +
Brassica fruticulosa +
Brassica juncea +
Brassica napus +
Brassica nigra +
Brassica oleracea +
Brassica rapa +
Brassica tournefortii +
Brassicaceae +
Brassicaceae tribe Alysseae +
Brassicaceae tribe Anchonieae +
Brassicaceae tribe Aphragmeae +
Brassicaceae tribe Arabideae +
Brassicaceae tribe Boechereae +
Brassicaceae tribe Brassiceae +
Brassicaceae tribe Buniadeae +
Brassicaceae tribe Calepineae +
Brassicaceae tribe Camelineae +
Brassicaceae tribe Cardamineae +
Brassicaceae tribe Chorisporeae +
Brassicaceae tribe Cochlearieae +
Brassicaceae tribe Conringieae +
Brassicaceae tribe Descurainieae +
Brassicaceae tribe Erysimeae +
Brassicaceae tribe Euclidieae +
Brassicaceae tribe Eutremeae +
Brassicaceae tribe Halimolobeae +
Brassicaceae tribe Hesperideae +
Brassicaceae tribe Iberideae +
Brassicaceae tribe Idahoa +
Brassicaceae tribe Isatideae +
Brassicaceae tribe Lepidieae +
Brassicaceae tribe Lunarieae +
Brassicaceae tribe Malcolmieae +
Brassicaceae tribe Noccaeeae +
Brassicaceae tribe Physarieae +
Brassicaceae tribe Sisymbrieae +
Brassicaceae tribe Smelowskieae +
Brassicaceae tribe Thelypodieae +
Brassicaceae tribe Thlaspideae +
Braunia andrieuxii +
Braunia secunda +
Braya fernaldii +
Braya glabella +
Braya glabella subsp. glabella +
Braya glabella subsp. prostrata +
Braya glabella subsp. purpurascens +
Braya humilis +
Braya humilis subsp. ellesmerensis +
Braya humilis subsp. humilis +
Braya humilis subsp. maccallae +
Braya humilis subsp. porsildii +
Braya linearis +
Braya longii +
Braya pilosa +
Braya thorild-wulffii +
Braya thorild-wulffii subsp. glabrata +
Braya thorild-wulffii subsp. thorild-wulffii +
Breynia disticha +
Brickellia +
Brickellia amplexicaulis +
Brickellia atractyloides +
Brickellia atractyloides var. arguta +
Brickellia atractyloides var. atractyloides +
Brickellia atractyloides var. odontolepis +
Brickellia baccharidea +
Brickellia betonicifolia +
Brickellia brachyphylla +
Brickellia californica +
Brickellia chenopodina +
Brickellia cordifolia +
Brickellia coulteri +
Brickellia coulteri var. brachiata +
Brickellia coulteri var. coulteri +
Brickellia cylindracea +
Brickellia dentata +
Brickellia desertorum +
Brickellia eupatorioides +
Brickellia eupatorioides var. chlorolepis +
Brickellia eupatorioides var. corymbulosa +
Brickellia eupatorioides var. eupatorioides +
Brickellia eupatorioides var. floridana +
Brickellia eupatorioides var. gracillima +
Brickellia eupatorioides var. texana +
Brickellia floribunda +
Brickellia frutescens +
Brickellia grandiflora +
Brickellia greenei +
Brickellia hinckleyi +
Brickellia hinckleyi var. hinckleyi +
Brickellia hinckleyi var. terlinguensis +
Brickellia incana +
Brickellia knappiana +
Brickellia laciniata +
Brickellia lemmonii +
Brickellia lemmonii var. conduplicata +
Brickellia lemmonii var. lemmonii +
Brickellia longifolia +
Brickellia longifolia var. longifolia +
Brickellia longifolia var. multiflora +
Brickellia microphylla +
Brickellia microphylla var. microphylla +
Brickellia microphylla var. scabra +
Brickellia nevinii +
Brickellia oblongifolia +
Brickellia oblongifolia var. linifolia +
Brickellia oblongifolia var. oblongifolia +
Brickellia parvula +
Brickellia pringlei +
Brickellia rusbyi +
Brickellia simplex +
Brickellia venosa +
Brickellia veronicifolia +
Brickelliastrum +
Brickelliastrum fendleri +
Brintonia discoidea +
Briza maxima +
Briza media +
Briza minor +
Brodiaea appendiculata +
Brodiaea californica +
Brodiaea californica subsp. californica +
Brodiaea californica subsp. leptandra +
Brodiaea coronaria +
Brodiaea coronaria subsp. coronaria +
Brodiaea coronaria subsp. rosea +
Brodiaea elegans +
Brodiaea elegans subsp. elegans +
Brodiaea elegans subsp. hooveri +
Brodiaea filifolia +
Brodiaea insignis +
Brodiaea jolonensis +
Brodiaea kinkiensis +
Brodiaea minor +
Brodiaea orcuttii +
Brodiaea pallida +
Brodiaea purdyi +
Brodiaea stellaris +
Brodiaea terrestris +
Brodiaea terrestris subsp. kernensis +
Brodiaea terrestris subsp. terrestris +
Bromeliaceae +
Bromidium tandilense +
Bromus aleutensis +
Bromus anomalus +
Bromus arenarius +
Bromus arizonicus +
Bromus arvensis +
Bromus berteroanus +
Bromus briziformis +
Bromus carinatus +
Bromus carinatus var. carinatus +
Bromus carinatus var. marginatus +
Bromus caroli-henrici +
Bromus catharticus +
Bromus catharticus var. catharticus +
Bromus catharticus var. elatus +
Bromus ciliatus +
Bromus commutatus +
Bromus danthoniae +
Bromus diandrus +
Bromus erectus +
Bromus frondosus +
Bromus grandis +
Bromus hallii +
Bromus hordeaceus +
Bromus hordeaceus subsp. hordeaceus +
Bromus hordeaceus subsp. molliformis +
Bromus hordeaceus subsp. pseudothominei +
Bromus hordeaceus subsp. thominei +
Bromus inermis +
Bromus japonicus +
Bromus kalmii +
Bromus laevipes +
Bromus lanatipes +
Bromus lanceolatus +
Bromus latiglumis +
Bromus lepidus +
Bromus madritensis +
Bromus maritimus +
Bromus mucroglumis +
Bromus nottowayanus +
Bromus orcuttianus +
Bromus pacificus +
Bromus polyanthus +
Bromus porteri +
Bromus pseudolaevipes +
Bromus pubescens +
Bromus pumpellianus +
Bromus pumpellianus subsp. dicksonii +
Bromus pumpellianus subsp. pumpellianus +
Bromus racemosus +
Bromus ramosus +
Bromus richardsonii +
Bromus riparius +
Bromus rubens +
Bromus scoparius +
Bromus secalinus +
Bromus sect. Bromopsis +
Bromus sect. Bromus +
Bromus sect. Ceratochloa +
Bromus sect. Genea +
Bromus sect. Neobromus +
Bromus sitchensis +
Bromus squarrosus +
Bromus sterilis +
Bromus suksdorfii +
Bromus tectorum +
Bromus texensis +
Bromus vulgaris +
Brosimum alicastrum +
Brothera leana +
Brotherella +
Brotherella canadensis +
Brotherella henonii +
Brotherella recurvans +
Brotherella roellii +
Broussonetia +
Broussonetia papyrifera +
Browallia americana +
Browallia eludens +
Bruchia bolanderi +
Bruchia brevifolia +
Bruchia carolinae +
Bruchia drummondii +
Bruchia flexuosa +
Bruchia fusca +
Bruchia hallii +
Bruchia ravenelii +
Bruchia texana +
Bruchia vogesiaca +
Bruchiaceae +
Brunnichia +
Brunnichia ovata +
Bryhnia graminicolor +
Bryhnia hultenii +
Bryhnia novae-angliae +
Bryoandersonia +
Bryoandersonia illecebra +
Bryobrittonia +
Bryobrittonia longipes +
Bryocrumia +
Bryocrumia vivicolor +
Bryoerythrophyllum +
Bryoerythrophyllum columbianum +
Bryoerythrophyllum ferruginascens +
Bryoerythrophyllum inaequalifolium +
Bryoerythrophyllum recurvirostrum +
Bryolawtonia +
Bryolawtonia vancouveriensis +
Bryonia alba +
Bryonia dioica +
Bryophyllum +
Bryophyllum daigremontianum +
Bryophyllum delagoense +
Bryophyllum fedtschenkoi +
Bryophyllum gastonis-bonnieri +
Bryophyllum pinnatum +
Bryoxiphiaceae +
Bryoxiphium +
Bryoxiphium norvegicum +
Bryum argenteum +
Bryum argenteum var. argenteum +
Bryum argenteum var. majus +
Bryum argenteum var. muticum +
Bryum blindii +
Bryum calobryoides +
Bryum chryseum +
Bryum lanatum +
Bryum oblongum +
Bryum veronense +
Buchloë dactyloides +
Buchnera americana +
Buchnera floridana +
Buchnera obliqua +
Buckiella undulata +
Bucklandiella +
Bucklandiella affinis +
Bucklandiella afoninae +
Bucklandiella brevipes +
Bucklandiella heterosticha +
Bucklandiella lawtoniae +
Bucklandiella macounii +
Bucklandiella macounii subsp. alpina +
Bucklandiella macounii subsp. macounii +
Bucklandiella microcarpa +
Bucklandiella obesa +
Bucklandiella occidentalis +
Bucklandiella pacifica +
Bucklandiella sect. Laevifoliae +
Bucklandiella sect. Lawtonia +
Bucklandiella sect. Marginatae +
Bucklandiella sect. Sudeticae +
Bucklandiella sudetica +
Bucklandiella venusta +
Buckleya distichophylla +
Buddleja davidii +
Buddleja indica +
Buddleja lindleyana +
Buddleja madagascariensis +
Buddleja marrubiifolia +
Buddleja racemosa +
Buddleja racemosa var. incana +
Buddleja racemosa var. racemosa +
Buddleja saligna +
Buddleja scordioides +
Buddleja sessiliflora +
Buddleja utahensis +
Bulbophyllum +
Bulbophyllum pachyrachis +
Bulbostylis +
Bulbostylis barbata +
Bulbostylis capillaris +
Bulbostylis ciliatifolia +
Bulbostylis ciliatifolia var. ciliatifolia +
Bulbostylis ciliatifolia var. coarctata +
Bulbostylis funckii +
Bulbostylis juncoides +
Bulbostylis schaffneri +
Bulbostylis stenophylla +
Bulbostylis warei +
Bunias erucago +
Bunias orientalis +
Burmannia biflora +
Burmannia capitata +
Burmannia flava +
Burmanniaceae +
Butomaceae +
Butomus umbellatus +
Buxbaumia aphylla +
Buxbaumia minakatae +
Buxbaumia piperi +
Buxbaumia viridis +
Buxbaumiaceae +
Buxus sempervirens +
Byrsonima lucida +
C
Cabomba caroliniana +
Cabombaceae +
Cacaliopsis +
Cacaliopsis nardosmia +
Cactaceae subfam. Cactoideae +
Cactaceae subfam. Opuntioideae +
Cactaceae subfam. Pereskioideae +
Cakile constricta +
Cakile edentula +
Cakile edentula subsp. edentula +
Cakile edentula subsp. harperi +
Cakile edentula var. edentula +
Cakile edentula var. lacustris +
Cakile geniculata +
Cakile lanceolata +
Cakile lanceolata subsp. fusiformis +
Cakile lanceolata subsp. lanceolata +
Cakile lanceolata subsp. pseudoconstricta +
Cakile maritima +
Cakile maritima subsp. maritima +
Calamagrostis +
Calamagrostis bolanderi +
Calamagrostis breweri +
Calamagrostis cainii +
Calamagrostis canadensis +
Calamagrostis canadensis var. canadensis +
Calamagrostis canadensis var. langsdorffii +
Calamagrostis canadensis var. macouniana +
Calamagrostis cinnoides +
Calamagrostis deschampsioides +
Calamagrostis epigejos +
Calamagrostis foliosa +
Calamagrostis howellii +
Calamagrostis koelerioides +
Calamagrostis lapponica +
Calamagrostis montanensis +
Calamagrostis muiriana +
Calamagrostis nutkaensis +
Calamagrostis ophitidis +
Calamagrostis perplexa +
Calamagrostis pickeringii +
Calamagrostis porteri +
Calamagrostis porteri subsp. insperata +
Calamagrostis porteri subsp. porteri +
Calamagrostis purpurascens +
Calamagrostis rubescens +
Calamagrostis scopulorum +
Calamagrostis sesquiflora +
Calamagrostis stricta +
Calamagrostis stricta subsp. inexpansa +
Calamagrostis stricta subsp. stricta +
Calamagrostis tacomensis +
Calamagrostis tweedyi +
Calamagrostis ×acutiflora +
Calamovilfa +
Calamovilfa arcuata +
Calamovilfa brevipilis +
Calamovilfa curtissii +
Calamovilfa gigantea +
Calamovilfa longifolia +
Calamovilfa longifolia var. longifolia +
Calamovilfa longifolia var. magna +
Calandrinia +
Calandrinia breweri +
Calandrinia ciliata +
Calendula arvensis +
Calendula officinalis +
Calepina irregularis +
Calibrachoa +
Calibrachoa parviflora +
Calla palustris +
Callaeum septentrionale +
Callicladium +
Callicladium haldaneanum +
Callicostella +
Callicostella pallida +
Calliergon +
Calliergon cordifolium +
Calliergon giganteum +
Calliergon megalophyllum +
Calliergon orbicularicordatum +
Calliergon richardsonii +
Calliergonaceae +
Calliergonella +
Calliergonella cuspidata +
Calliphysalis +
Calliphysalis carpenteri +
Callirhoë alcaeoides +
Callirhoë bushii +
Callirhoë digitata +
Callirhoë involucrata +
Callirhoë involucrata var. involucrata +
Callirhoë involucrata var. lineariloba +
Callirhoë leiocarpa +
Callirhoë papaver +
Callirhoë pedata +
Callirhoë scabriuscula +
Callirhoë triangulata +
Callisia cordifolia +
Callisia fragrans +
Callisia graminea +
Callisia micrantha +
Callisia ornata +
Callisia repens +
Callisia rosea +
Callitriche +
Callitriche brutia +
Callitriche brutia var. hamulata +
Callitriche fassettii +
Callitriche hermaphroditica +
Callitriche heterophylla +
Callitriche longipedunculata +
Callitriche marginata +
Callitriche palustris +
Callitriche pedunculosa +
Callitriche peploides +
Callitriche stagnalis +
Callitriche stenoptera +
Callitriche terrestris +
Callitriche trochlearis +
Callitris glaucophylla +
Calluna vulgaris +
Calocedrus +
Calocedrus decurrens +
Calochortus +
Calochortus albus +
Calochortus amabilis +
Calochortus ambiguus +
Calochortus amoenus +
Calochortus apiculatus +
Calochortus argillosus +
Calochortus aureus +
Calochortus bruneaunis +
Calochortus catalinae +
Calochortus clavatus +
Calochortus clavatus var. avius +
Calochortus clavatus var. clavatus +
Calochortus clavatus var. gracilis +
Calochortus clavatus var. pallidus +
Calochortus clavatus var. recurvifolius +
Calochortus coeruleus +
Calochortus concolor +
Calochortus coxii +
Calochortus dunnii +
Calochortus elegans +
Calochortus elegans var. elegans +
Calochortus elegans var. nanus +
Calochortus elegans var. selwayensis +
Calochortus eurycarpus +
Calochortus excavatus +
Calochortus flexuosus +
Calochortus greenei +
Calochortus gunnisonii +
Calochortus gunnisonii var. gunnisonii +
Calochortus gunnisonii var. perpulcher +
Calochortus howellii +
Calochortus indecorus +
Calochortus invenustus +
Calochortus kennedyi +
Calochortus kennedyi var. kennedyi +
Calochortus kennedyi var. munzii +
Calochortus leichtlinii +
Calochortus longebarbatus +
Calochortus longebarbatus var. longebarbatus +
Calochortus longebarbatus var. peckii +
Calochortus luteus +
Calochortus lyallii +
Calochortus macrocarpus +
Calochortus macrocarpus var. macrocarpus +
Calochortus macrocarpus var. maculosus +
Calochortus minimus +
Calochortus monanthus +
Calochortus monophyllus +
Calochortus nitidus +
Calochortus nudus +
Calochortus nuttallii +
Calochortus obispoensis +
Calochortus palmeri +
Calochortus palmeri var. munzii +
Calochortus palmeri var. palmeri +
Calochortus panamintensis +
Calochortus persistens +
Calochortus plummerae +
Calochortus pulchellus +
Calochortus raichei +
Calochortus simulans +
Calochortus splendens +
Calochortus striatus +
Calochortus subalpinus +
Calochortus superbus +
Calochortus tiburonensis +
Calochortus tolmiei +
Calochortus umbellatus +
Calochortus umpquaensis +
Calochortus uniflorus +
Calochortus venustus +
Calochortus vestae +
Calochortus weedii +
Calochortus weedii var. intermedius +
Calochortus weedii var. vestus +
Calochortus weedii var. weedii +
Calochortus westonii +
Calophyllaceae +
Calophyllum +
Calophyllum inophyllum +
Calopogon barbatus +
Calopogon multiflorus +
Calopogon oklahomensis +
Calopogon pallidus +
Calopogon tuberosus +
Calopogon tuberosus var. simpsonii +
Calopogon tuberosus var. tuberosus +
Caltha leptosepala +
Caltha natans +
Caltha palustris +
Calycadenia +
Calycadenia fremontii +
Calycadenia hooveri +
Calycadenia micrantha +
Calycadenia mollis +
Calycadenia multiglandulosa +
Calycadenia oppositifolia +
Calycadenia pauciflora +
Calycadenia spicata +
Calycadenia truncata +
Calycadenia villosa +
Calycanthaceae +
Calycanthus +
Calycanthus floridus +
Calycanthus floridus var. floridus +
Calycanthus floridus var. glaucus +
Calycanthus occidentalis +
Calycocarpum +
Calycocarpum lyonii +
Calycoseris +
Calycoseris parryi +
Calycoseris wrightii +
Calydorea coelestina +
Calymperaceae +
Calymperes +
Calymperes afzelii +
Calymperes erosum +
Calymperes palisotii +
Calymperes pallidum +
Calymperes tenerum +
Calypso bulbosa +
Calypso bulbosa var. americana +
Calypso bulbosa var. occidentalis +
Calyptocarpus +
Calyptocarpus vialis +
Calyptranthes +
Calyptranthes pallens +
Calyptranthes zuzygium +
Calystegia +
Calystegia atriplicifolia +
Calystegia atriplicifolia subsp. atriplicifolia +
Calystegia atriplicifolia subsp. buttensis +
Calystegia catesbeiana +
Calystegia catesbeiana subsp. catesbeiana +
Calystegia catesbeiana subsp. sericata +
Calystegia collina +
Calystegia collina subsp. apicum +
Calystegia collina subsp. collina +
Calystegia collina subsp. oxyphylla +
Calystegia collina subsp. tridactylosa +
Calystegia collina subsp. venusta +
Calystegia felix +
Calystegia hederacea +
Calystegia longipes +
Calystegia macounii +
Calystegia macrostegia +
Calystegia macrostegia subsp. amplissima +
Calystegia macrostegia subsp. arida +
Calystegia macrostegia subsp. cyclostegia +
Calystegia macrostegia subsp. intermedia +
Calystegia macrostegia subsp. macrostegia +
Calystegia macrostegia subsp. tenuifolia +
Calystegia malacophylla +
Calystegia malacophylla subsp. malacophylla +
Calystegia malacophylla subsp. pedicellata +
Calystegia occidentalis +
Calystegia occidentalis subsp. fulcrata +
Calystegia occidentalis subsp. occidentalis +
Calystegia peirsonii +
Calystegia pubescens +
Calystegia purpurata +
Calystegia purpurata subsp. purpurata +
Calystegia purpurata subsp. saxicola +
Calystegia sepium +
Calystegia sepium subsp. americana +
Calystegia sepium subsp. angulata +
Calystegia sepium subsp. appalachiana +
Calystegia sepium subsp. binghamiae +
Calystegia sepium subsp. erratica +
Calystegia sepium subsp. sepium +
Calystegia silvatica +
Calystegia silvatica subsp. disjuncta +
Calystegia silvatica subsp. fraterniflora +
Calystegia soldanella +
Calystegia spithamaea +
Calystegia spithamaea subsp. purshiana +
Calystegia spithamaea subsp. spithamaea +
Calystegia spithamaea subsp. stans +
Calystegia stebbinsii +
Calystegia subacaulis +
Calystegia subacaulis subsp. episcopalis +
Calystegia subacaulis subsp. subacaulis +
Calystegia vanzuukiae +
Camassia angusta +
Camassia cusickii +
Camassia howellii +
Camassia leichtlinii +
Camassia leichtlinii subsp. leichtlinii +
Camassia leichtlinii subsp. suksdorfii +
Camassia quamash +
Camassia quamash subsp. azurea +
Camassia quamash subsp. breviflora +
Camassia quamash subsp. intermedia +
Camassia quamash subsp. linearis +
Camassia quamash subsp. maxima +
Camassia quamash subsp. quamash +
Camassia quamash subsp. utahensis +
Camassia quamash subsp. walpolei +
Camassia scilloides +
Camelina alyssum +
Camelina microcarpa +
Camelina rumelica +
Camelina sativa +
Camissonia +
Camissonia benitensis +
Camissonia campestris +
Camissonia campestris subsp. campestris +
Camissonia campestris subsp. obispoensis +
Camissonia contorta +
Camissonia integrifolia +
Camissonia kernensis +
Camissonia kernensis subsp. gilmanii +
Camissonia kernensis subsp. kernensis +
Camissonia lacustris +
Camissonia parvula +
Camissonia pubens +
Camissonia pusilla +
Camissonia sierrae +
Camissonia sierrae subsp. alticola +
Camissonia sierrae subsp. sierrae +
Camissonia strigulosa +
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 +
Campyliadelphus +
Campyliadelphus chrysophyllus +
Campylium laxifolium +
Campylium longicuspis +
Campylium protensum +
Campylium stellatum +
Campylocentrum +
Campylocentrum pachyrrhizum +
Campyloneurum +
Campyloneurum angustifolium +
Campyloneurum costatum +
Campyloneurum latum +
Campyloneurum phyllitidis +
Campylophyllum +
Campylophyllum halleri +
Campylophyllum hispidulum +
Campylophyllum sommerfeltii +
Campylopodiella +
Campylopodiella flagellacea +
Campylopodiella stenocarpa +
Campylopus +
Campylopus angustiretis +
Campylopus arctocarpus +
Campylopus atrovirens +
Campylopus atrovirens var. atrovirens +
Campylopus atrovirens var. cucullatifolius +
Campylopus carolinae +
Campylopus flexuosus +
Campylopus fragilis +
Campylopus gracilis +
Campylopus introflexus +
Campylopus oerstedianus +
Campylopus pilifer +
Campylopus pyriformis +
Campylopus schimperi +
Campylopus schmidii +
Campylopus sinensis +
Campylopus subulatus +
Campylopus surinamensis +
Campylopus tallulensis +
Campylostelium +
Campylostelium saxicola +
Canadanthus +
Canadanthus modestus +
Canbya aurea +
Canbya candida +
Canella winterana +
Canellaceae +
Canna flaccida +
Canna glauca +
Canna indica +
Cannabaceae +
Cannabis sativa +
Canotia holacantha +
Caperonia castaneifolia +
Caperonia palustris +
Capparaceae +
Capraria biflora +
Capraria mexicana +
Capsella bursa-pastoris +
Capsicum annuum +
Capsicum annuum var. glabriusculum +
Cardamine angulata +
Cardamine angustata +
Cardamine bellidifolia +
Cardamine blaisdellii +
Cardamine breweri +
Cardamine bulbosa +
Cardamine californica +
Cardamine clematitis +
Cardamine concatenata +
Cardamine constancei +
Cardamine cordifolia +
Cardamine digitata +
Cardamine diphylla +
Cardamine dissecta +
Cardamine douglassii +
Cardamine flagellifera +
Cardamine flexuosa +
Cardamine hirsuta +
Cardamine holmgrenii +
Cardamine impatiens +
Cardamine longii +
Cardamine macrocarpa +
Cardamine maxima +
Cardamine micranthera +
Cardamine microphylla +
Cardamine nuttallii +
Cardamine nymanii +
Cardamine occidentalis +
Cardamine oligosperma +
Cardamine pachystigma +
Cardamine parviflora +
Cardamine pattersonii +
Cardamine penduliflora +
Cardamine pensylvanica +
Cardamine pratensis +
Cardamine purpurea +
Cardamine rotundifolia +
Cardamine rupicola +
Cardamine umbellata +
Cardionema +
Cardionema ramosissimum +
Carduus acanthoides +
Carduus acanthoides subsp. acanthoides +
Carduus crispus +
Carduus nutans +
Carduus pycnocephalus +
Carduus pycnocephalus subsp. pycnocephalus +
Carduus tenuiflorus +
Carex aboriginum +
Carex abrupta +
Carex abscondita +
Carex acidicola +
Carex acutiformis +
Carex adelostoma +
Carex adusta +
Carex aestivalis +
Carex aggregata +
Carex alata +
Carex albicans +
Carex albicans var. albicans +
Carex albicans var. australis +
Carex albicans var. emmonsii +
Carex albida +
Carex albolutescens +
Carex albonigra +
Carex albursina +
Carex alma +
Carex alopecoidea +
Carex amphibola +
Carex amplectens +
Carex amplifolia +
Carex angustata +
Carex annectens +
Carex anthoxanthea +
Carex aperta +
Carex appalachica +
Carex aquatilis +
Carex aquatilis var. aquatilis +
Carex aquatilis var. dives +
Carex aquatilis var. minor +
Carex aquatilis var. substricta +
Carex arapahoensis +
Carex arcta +
Carex arctata +
Carex arctiformis +
Carex arenaria +
Carex argyrantha +
Carex arkansana +
Carex assiniboinensis +
Carex atherodes +
Carex athrostachya +
Carex atlantica +
Carex atlantica subsp. atlantica +
Carex atlantica subsp. capillacea +
Carex atrata +
Carex atratiformis +
Carex atrofusca +
Carex atrosquama +
Carex aurea +
Carex aureolensis +
Carex austrina +
Carex austrocaroliniana +
Carex backii +
Carex baileyi +
Carex baltzellii +
Carex barbarae +
Carex barrattii +
Carex basiantha +
Carex bebbii +
Carex bella +
Carex bicknellii +
Carex bicolor +
Carex bigelowii +
Carex bigelowii subsp. bigelowii +
Carex bigelowii subsp. lugens +
Carex biltmoreana +
Carex blanda +
Carex bolanderi +
Carex bonanzensis +
Carex brainerdii +
Carex brevicaulis +
Carex brevior +
Carex breweri +
Carex bromoides +
Carex bromoides subsp. bromoides +
Carex bromoides subsp. montana +
Carex brunnescens +
Carex brunnescens subsp. brunnescens +
Carex brunnescens subsp. sphaerostachya +
Carex brysonii +
Carex bulbostylis +
Carex bullata +
Carex bushii +
Carex buxbaumii +
Carex calcifugens +
Carex californica +
Carex canescens +
Carex canescens subsp. canescens +
Carex canescens subsp. disjuncta +
Carex capillaris +
Carex capitata +
Carex careyana +
Carex caroliniana +
Carex caryophyllea +
Carex castanea +
Carex cephaloidea +
Carex cephalophora +
Carex chalciolepis +
Carex chapmanii +
Carex cherokeensis +
Carex chihuahuensis +
Carex chordorrhiza +
Carex circinata +
Carex collinsii +
Carex communis +
Carex communis var. amplisquama +
Carex communis var. communis +
Carex comosa +
Carex complanata +
Carex concinna +
Carex concinnoides +
Carex congdonii +
Carex conjuncta +
Carex conoidea +
Carex constanceana +
Carex cordillerana +
Carex corrugata +
Carex crawei +
Carex crawfordii +
Carex crebriflora +
Carex crinita +
Carex crinita var. brevicrinis +
Carex crinita var. crinita +
Carex cristatella +
Carex crus-corvi +
Carex cryptolepis +
Carex cumberlandensis +
Carex cumulata +
Carex curatorum +
Carex cusickii +
Carex dasycarpa +
Carex davisii +
Carex davyi +
Carex debilis +
Carex debilis var. debilis +
Carex debilis var. rudgei +
Carex decomposita +
Carex deflexa +
Carex deflexa var. boottii +
Carex deflexa var. deflexa +
Carex densa +
Carex deweyana +
Carex deweyana var. collectanea +
Carex deweyana var. deweyana +
Carex diandra +
Carex digitalis +
Carex digitalis var. digitalis +
Carex digitalis var. floridana +
Carex digitalis var. macropoda +
Carex diluta +
Carex disperma +
Carex distans +
Carex disticha +
Carex divisa +
Carex divulsa +
Carex divulsa subsp. divulsa +
Carex douglasii +
Carex duriuscula +
Carex ebenea +
Carex eburnea +
Carex echinata +
Carex echinata subsp. echinata +
Carex echinata subsp. phyllomanica +
Carex edwardsiana +
Carex egglestonii +
Carex eleusinoides +
Carex elliottii +
Carex elynoides +
Carex emoryi +
Carex endlichii +
Carex engelmannii +
Carex epapillosa +
Carex exilis +
Carex exsiccata +
Carex extensa +
Carex festucacea +
Carex feta +
Carex filifolia +
Carex filifolia var. erostrata +
Carex filifolia var. filifolia +
Carex fissa +
Carex fissa var. aristata +
Carex fissa var. fissa +
Carex fissuricola +
Carex flacca +
Carex flaccosperma +
Carex flava +
Carex floridana +
Carex foenea +
Carex folliculata +
Carex formosa +
Carex fracta +
Carex frankii +
Carex fuliginosa +
Carex garberi +
Carex geophila +
Carex geyeri +
Carex gholsonii +
Carex gigantea +
Carex glacialis +
Carex glareosa +
Carex glareosa subsp. glareosa +
Carex glareosa subsp. pribylovensis +
Carex glaucescens +
Carex glaucodea +
Carex globosa +
Carex gmelinii +
Carex godfreyi +
Carex gracilescens +
Carex gracilior +
Carex gracillima +
Carex granularis +
Carex gravida +
Carex grayi +
Carex grisea +
Carex gynandra +
Carex gynocrates +
Carex gynodynama +
Carex halliana +
Carex hallii +
Carex harfordii +
Carex hassei +
Carex haydeniana +
Carex haydenii +
Carex heleonastes +
Carex helleri +
Carex hendersonii +
Carex heteroneura +
Carex heterostachya +
Carex hirsutella +
Carex hirta +
Carex hirtifolia +
Carex hirtissima +
Carex hitchcockiana +
Carex holostoma +
Carex hoodii +
Carex hookeriana +
Carex hormathodes +
Carex hostiana +
Carex houghtoniana +
Carex hyalina +
Carex hyalinolepis +
Carex hystericina +
Carex idahoa +
Carex illota +
Carex impressinervia +
Carex incurviformis +
Carex infirminervia +
Carex inops +
Carex inops subsp. heliophila +
Carex inops subsp. inops +
Carex integra +
Carex interior +
Carex interrupta +
Carex intumescens +
Carex jamesii +
Carex jonesii +
Carex joorii +
Carex juniperorum +
Carex kobomugi +
Carex kraliana +
Carex krauseorum +
Carex lachenalii +
Carex lacustris +
Carex laeviconica +
Carex laeviculmis +
Carex laevivaginata +
Carex lapponica +
Carex lasiocarpa +
Carex latebracteata +
Carex lativena +
Carex laxa +
Carex laxiculmis +
Carex laxiculmis var. copulata +
Carex laxiculmis var. laxiculmis +
Carex laxiflora +
Carex leavenworthii +
Carex lemmonii +
Carex lenticularis +
Carex lenticularis var. dolia +
Carex lenticularis var. impressa +
Carex lenticularis var. lenticularis +
Carex lenticularis var. limnophila +
Carex lenticularis var. lipocarpa +
Carex leporinella +
Carex leptalea +
Carex leptonervia +
Carex leptopoda +
Carex limosa +
Carex livida +
Carex loliacea +
Carex lonchocarpa +
Carex longii +
Carex louisianica +
Carex lucorum +
Carex lucorum var. austrolucorum +
Carex lucorum var. lucorum +
Carex lupuliformis +
Carex lupulina +
Carex lurida +
Carex lutea +
Carex luzulifolia +
Carex luzulina +
Carex luzulina var. ablata +
Carex luzulina var. luzulina +
Carex lyngbyei +
Carex mackenziei +
Carex macloviana +
Carex macrocephala +
Carex macrochaeta +
Carex magellanica +
Carex magellanica subsp. irrigua +
Carex manhartii +
Carex marina +
Carex mariposana +
Carex maritima +
Carex mckittrickensis +
Carex meadii +
Carex media +
Carex melanostachya +
Carex membranacea +
Carex mendocinensis +
Carex merritt-fernaldii +
Carex mertensii +
Carex mesochorea +
Carex michauxiana +
Carex microchaeta +
Carex microchaeta subsp. microchaeta +
Carex microchaeta subsp. nesophila +
Carex microdonta +
Carex microglochin +
Carex microglochin subsp. microglochin +
Carex micropoda +
Carex microptera +
Carex misera +
Carex missouriensis +
Carex mitchelliana +
Carex molesta +
Carex molestiformis +
Carex muehlenbergii +
Carex muehlenbergii var. enervis +
Carex muehlenbergii var. muehlenbergii +
Carex multicaulis +
Carex multicostata +
Carex muricata +
Carex muricata subsp. lamprocarpa +
Carex muriculata +
Carex muskingumensis +
Carex nardina +
Carex nebrascensis +
Carex nelsonii +
Carex nervina +
Carex neurophora +
Carex nigra +
Carex nigricans +
Carex nigromarginata +
Carex normalis +
Carex norvegica +
Carex nova +
Carex novae-angliae +
Carex nudata +
Carex obispoensis +
Carex obnupta +
Carex obtusata +
Carex occidentalis +
Carex oklahomensis +
Carex oligocarpa +
Carex oligosperma +
Carex opaca +
Carex oreocharis +
Carex ormostachya +
Carex oronensis +
Carex ouachitana +
Carex ovalis +
Carex oxylepis +
Carex ozarkana +
Carex pachystachya +
Carex paeninsulae +
Carex paleacea +
Carex pallescens +
Carex panicea +
Carex pansa +
Carex parallela +
Carex parallela subsp. parallela +
Carex parryana +
Carex pauciflora +
Carex paysonis +
Carex peckii +
Carex pedunculata +
Carex pellita +
Carex pelocarpa +
Carex pendula +
Carex pensylvanica +
Carex perdentata +
Carex perglobosa +
Carex petasata +
Carex petricosa +
Carex petricosa var. misandroides +
Carex petricosa var. petricosa +
Carex phaeocephala +
Carex picta +
Carex pigra +
Carex pityophila +
Carex planispicata +
Carex planostachys +
Carex plantaginea +
Carex platyphylla +
Carex pluriflora +
Carex podocarpa +
Carex polymorpha +
Carex praeceptorum +
Carex praegracilis +
Carex prairea +
Carex prasina +
Carex praticola +
Carex preslii +
Carex projecta +
Carex proposita +
Carex pseudocyperus +
Carex pumila +
Carex purpurifera +
Carex radfordii +
Carex radiata +
Carex ramenskii +
Carex rariflora +
Carex raynoldsii +
Carex recta +
Carex reniformis +
Carex retroflexa +
Carex retrorsa +
Carex richardsonii +
Carex roanensis +
Carex rosea +
Carex rossii +
Carex rostrata +
Carex rotundata +
Carex rufina +
Carex rupestris +
Carex ruthii +
Carex sabulosa +
Carex salina +
Carex sartwelliana +
Carex sartwellii +
Carex saxatilis +
Carex saximontana +
Carex scabrata +
Carex scabriuscula +
Carex schottii +
Carex schweinitzii +
Carex scirpoidea +
Carex scirpoidea subsp. convoluta +
Carex scirpoidea subsp. pseudoscirpoidea +
Carex scirpoidea subsp. scirpoidea +
Carex scirpoidea subsp. stenochlaena +
Carex scoparia +
Carex scoparia var. scoparia +
Carex scoparia var. tessellata +
Carex scopulorum +
Carex scopulorum var. bracteosa +
Carex scopulorum var. prionophylla +
Carex scopulorum var. scopulorum +
Carex sect. Acrocystis +
Carex sect. Albae +
Carex sect. Ammoglochin +
Carex sect. Anomalae +
Carex sect. Aulocystis +
Carex sect. Bicolores +
Carex sect. Capituligerae +
Carex sect. Carex +
Carex sect. Careyanae +
Carex sect. Ceratocystis +
Carex sect. Chlorostachyae +
Carex sect. Chordorrhizae +
Carex sect. Circinatae +
Carex sect. Clandestinae +
Carex sect. Collinsiae +
Carex sect. Cyperoideae +
Carex sect. Deweyanae +
Carex sect. Dispermae +
Carex sect. Divisae +
Carex sect. Dornera +
Carex sect. Filifoliae +
Carex sect. Firmiculmes +
Carex sect. Foetidae +
Carex sect. Glareosae +
Carex sect. Glaucescentes +
Carex sect. Granulares +
Carex sect. Griseae +
Carex sect. Hallerianae +
Carex sect. Heleoglochin +
Carex sect. Hirtifoliae +
Carex sect. Hispidae +
Carex sect. Holarrhenae +
Carex sect. Hymenochlaenae +
Carex sect. Inflatae +
Carex sect. Lamprochlaenae +
Carex sect. Laxiflorae +
Carex sect. Leptocephalae +
Carex sect. Leucoglochin +
Carex sect. Limosae +
Carex sect. Longicaules +
Carex sect. Lupulinae +
Carex sect. Macrocephalae +
Carex sect. Mitratae +
Carex sect. Multiflorae +
Carex sect. Nardinae +
Carex sect. Obtusatae +
Carex sect. Ovales +
Carex sect. Paludosae +
Carex sect. Paniceae +
Carex sect. Phacocystis +
Carex sect. Phaestoglochin +
Carex sect. Phyllostachyae +
Carex sect. Physoglochin +
Carex sect. Pictae +
Carex sect. Porocystis +
Carex sect. Racemosae +
Carex sect. Rhynchocystis +
Carex sect. Rostrales +
Carex sect. Rupestres +
Carex sect. Schiedeanae +
Carex sect. Scirpinae +
Carex sect. Scitae +
Carex sect. Shortianae +
Carex sect. Spirostachyae +
Carex sect. Squarrosae +
Carex sect. Stellulatae +
Carex sect. Thuringiaca +
Carex sect. Triquetrae +
Carex sect. Vesicariae +
Carex sect. Vulpinae +
Carex senta +
Carex seorsa +
Carex serpenticola +
Carex serratodens +
Carex sheldonii +
Carex shinnersii +
Carex shortiana +
Carex siccata +
Carex silicea +
Carex simulata +
Carex socialis +
Carex sparganioides +
Carex specifica +
Carex spectabilis +
Carex specuicola +
Carex spicata +
Carex spissa +
Carex sprengelii +
Carex squarrosa +
Carex stenoptila +
Carex sterilis +
Carex stevenii +
Carex stipata +
Carex stipata var. maxima +
Carex stipata var. stipata +
Carex straminea +
Carex straminiformis +
Carex striata +
Carex striatula +
Carex stricta +
Carex styloflexa +
Carex stylosa +
Carex subbracteata +
Carex suberecta +
Carex subfusca +
Carex subnigricans +
Carex subspathacea +
Carex superata +
Carex supina +
Carex supina subsp. spaniocarpa +
Carex swanii +
Carex sychnocephala +
Carex sylvatica +
Carex tahoensis +
Carex tenax +
Carex tenera +
Carex tenera var. echinodes +
Carex tenera var. tenera +
Carex tenuiflora +
Carex tetanica +
Carex tetrastachya +
Carex texensis +
Carex thornei +
Carex thurberi +
Carex timida +
Carex tincta +
Carex tompkinsii +
Carex tonsa +
Carex tonsa var. rugosperma +
Carex tonsa var. tonsa +
Carex torreyi +
Carex torta +
Carex triangularis +
Carex tribuloides +
Carex tribuloides var. sangamonensis +
Carex tribuloides var. tribuloides +
Carex trichocarpa +
Carex triquetra +
Carex trisperma +
Carex tuckermanii +
Carex tumulicola +
Carex turbinata +
Carex turgescens +
Carex typhina +
Carex umbellata +
Carex unilateralis +
Carex ursina +
Carex utriculata +
Carex vacillans +
Carex vaginata +
Carex vallicola +
Carex venusta +
Carex vernacula +
Carex verrucosa +
Carex vesicaria +
Carex vestita +
Carex vexans +
Carex virescens +
Carex viridula +
Carex viridula subsp. brachyrrhyncha +
Carex viridula subsp. oedocarpa +
Carex viridula subsp. viridula +
Carex viridula var. elatior +
Carex viridula var. saxilittoralis +
Carex viridula var. viridula +
Carex vulpinoidea +
Carex whitneyi +
Carex wiegandii +
Carex willdenowii +
Carex williamsii +
Carex woodii +
Carex wootonii +
Carex xerantica +
Carica papaya +
Caricaceae +
Carissa macrocarpa +
Carlina vulgaris +
Carlina vulgaris subsp. vulgaris +
Carlquistia +
Carlquistia muirii +
Carminatia +
Carminatia tenuiflora +
Carnegiea gigantea +
Carpenteria +
Carpenteria californica +
Carphephorus +
Carphephorus bellidifolius +
Carphephorus carnosus +
Carphephorus corymbosus +
Carphephorus odoratissimus +
Carphephorus odoratissimus var. odoratissimus +
Carphephorus odoratissimus var. subtropicanus +
Carphephorus paniculatus +
Carphephorus pseudoliatris +
Carphephorus tomentosus +
Carphochaete +
Carphochaete bigelovii +
Carpinus caroliniana +
Carpinus caroliniana subsp. caroliniana +
Carpinus caroliniana subsp. virginiana +
Carpobrotus +
Carpobrotus chilensis +
Carpobrotus edulis +
Carrichtera +
Carrichtera annua +
Carsonia sparsifolia +
Carthamus creticus +
Carthamus lanatus +
Carthamus leucocaulos +
Carthamus tinctorius +
Carya aquatica +
Carya cordiformis +
Carya floridana +
Carya glabra +
Carya illinoinensis +
Carya laciniosa +
Carya myristiciformis +
Carya ovata +
Carya ovata var. australis +
Carya ovata var. ovata +
Carya pallida +
Carya texana +
Carya tomentosa +
Caryophyllaceae +
Caryophyllaceae subfam. Alsinoideae +
Caryophyllaceae subfam. Caryophylloideae +
Caryophyllaceae subfam. Paronychioideae +
Caryophyllaceae subfam. Polycarpoideae +
Caryota mitis +
Caryota urens +
Cascadia nuttallii +
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 +
Cassytha filiformis +
Castanea dentata +
Castanea ozarkensis +
Castanea pumila +
Castilleja +
Castilleja affinis +
Castilleja affinis var. affinis +
Castilleja affinis var. contentiosa +
Castilleja affinis var. neglecta +
Castilleja ambigua +
Castilleja ambigua var. ambigua +
Castilleja ambigua var. humboldtiensis +
Castilleja ambigua var. insalutata +
Castilleja ambigua var. meadii +
Castilleja angustifolia +
Castilleja angustifolia var. angustifolia +
Castilleja angustifolia var. dubia +
Castilleja angustifolia var. flavescens +
Castilleja applegatei +
Castilleja applegatei var. applegatei +
Castilleja applegatei var. breweri +
Castilleja applegatei var. pinetorum +
Castilleja applegatei var. viscida +
Castilleja aquariensis +
Castilleja arachnoidea +
Castilleja attenuata +
Castilleja brevilobata +
Castilleja brevistyla +
Castilleja campestris +
Castilleja campestris var. campestris +
Castilleja campestris var. succulenta +
Castilleja cervina +
Castilleja chambersii +
Castilleja chlorotica +
Castilleja christii +
Castilleja chromosa +
Castilleja chrymactis +
Castilleja chrysantha +
Castilleja cinerea +
Castilleja citrina +
Castilleja coccinea +
Castilleja collegiorum +
Castilleja covilleana +
Castilleja crista-galli +
Castilleja cryptantha +
Castilleja cusickii +
Castilleja densiflora +
Castilleja densiflora var. densiflora +
Castilleja densiflora var. gracilis +
Castilleja densiflora var. obispoënsis +
Castilleja dissitiflora +
Castilleja disticha +
Castilleja elata +
Castilleja elegans +
Castilleja elmeri +
Castilleja exserta +
Castilleja exserta var. exserta +
Castilleja exserta var. latifolia +
Castilleja exserta var. venusta +
Castilleja flava +
Castilleja flava var. flava +
Castilleja flava var. rustica +
Castilleja foliolosa +
Castilleja fraterna +
Castilleja genevieveana +
Castilleja glandulifera +
Castilleja gleasoni +
Castilleja gracillima +
Castilleja grisea +
Castilleja haydenii +
Castilleja hispida +
Castilleja hispida var. acuta +
Castilleja hispida var. hispida +
Castilleja hololeuca +
Castilleja hyperborea +
Castilleja indivisa +
Castilleja integra +
Castilleja kaibabensis +
Castilleja kerryana +
Castilleja kraliana +
Castilleja lacera +
Castilleja lanata +
Castilleja lasiorhyncha +
Castilleja lassenensis +
Castilleja latifolia +
Castilleja lemmonii +
Castilleja leschkeana +
Castilleja levisecta +
Castilleja linariifolia +
Castilleja lindheimeri +
Castilleja lineariloba +
Castilleja lineata +
Castilleja litoralis +
Castilleja lutescens +
Castilleja martini +
Castilleja martini var. clokeyi +
Castilleja martini var. martini +
Castilleja mendocinensis +
Castilleja mexicana +
Castilleja miniata +
Castilleja miniata var. dixonii +
Castilleja miniata var. fulva +
Castilleja miniata var. miniata +
Castilleja miniata var. oblongifolia +
Castilleja minor +
Castilleja minor var. exilis +
Castilleja minor var. minor +
Castilleja minor var. spiralis +
Castilleja minor var. stenantha +
Castilleja mogollonica +
Castilleja mollis +
Castilleja montigena +
Castilleja nana +
Castilleja nelsonii +
Castilleja nervata +
Castilleja nivea +
Castilleja occidentalis +
Castilleja oresbia +
Castilleja organorum +
Castilleja ornata +
Castilleja pallescens +
Castilleja pallescens var. inverta +
Castilleja pallescens var. pallescens +
Castilleja pallida +
Castilleja pallida var. caudata +
Castilleja pallida var. yukonis +
Castilleja parviflora +
Castilleja parviflora var. albida +
Castilleja parviflora var. olympica +
Castilleja parviflora var. oreopola +
Castilleja parviflora var. parviflora +
Castilleja parvula +
Castilleja patriotica +
Castilleja peckiana +
Castilleja peirsonii +
Castilleja pilosa +
Castilleja pilosa var. longispica +
Castilleja pilosa var. pilosa +
Castilleja pilosa var. steenensis +
Castilleja plagiotoma +
Castilleja praeterita +
Castilleja pruinosa +
Castilleja puberula +
Castilleja pulchella +
Castilleja purpurascens +
Castilleja purpurea +
Castilleja raupii +
Castilleja revealii +
Castilleja rhexiifolia +
Castilleja rigida +
Castilleja rubicundula +
Castilleja rubicundula var. lithospermoides +
Castilleja rubicundula var. rubicundula +
Castilleja rubida +
Castilleja rupicola +
Castilleja salsuginosa +
Castilleja scabrida +
Castilleja scabrida var. barnebyana +
Castilleja scabrida var. scabrida +
Castilleja schizotricha +
Castilleja septentrionalis +
Castilleja sessiliflora +
Castilleja subinclusa +
Castilleja subinclusa var. franciscana +
Castilleja subinclusa var. jepsonii +
Castilleja subinclusa var. subinclusa +
Castilleja suksdorfii +
Castilleja tenuiflora +
Castilleja tenuiflora var. tenuiflora +
Castilleja tenuis +
Castilleja thompsonii +
Castilleja tomentosa +
Castilleja uliginosa +
Castilleja unalaschcensis +
Castilleja victoriae +
Castilleja viscidula +
Castilleja wightii +
Castilleja wootonii +
Castilleja xanthotricha +
Casuarina cunninghamiana +
Casuarina cunninghamiana subsp. cunninghamiana +
Casuarina equisetifolia +
Casuarina equisetifolia subsp. equisetifolia +
Casuarina glauca +
Casuarinaceae +
Catabrosa aquatica +
Catharanthus +
Catharanthus roseus +
Cathestecum +
Cathestecum brevifolium +
Cathestecum erectum +
Catopsis berteroniana +
Catopsis floribunda +
Catopsis nutans +
Catoscopiaceae +
Catoscopium +
Catoscopium nigritum +
Caulanthus +
Caulanthus amplexicaulis +
Caulanthus anceps +
Caulanthus barnebyi +
Caulanthus californicus +
Caulanthus cooperi +
Caulanthus coulteri +
Caulanthus crassicaulis +
Caulanthus flavescens +
Caulanthus glaucus +
Caulanthus hallii +
Caulanthus heterophyllus +
Caulanthus inflatus +
Caulanthus lasiophyllus +
Caulanthus lemmonii +
Caulanthus major +
Caulanthus pilosus +
Caulanthus simulans +
Caulophyllum +
Caulophyllum giganteum +
Caulophyllum thalictroides +
Causonis japonica +
Cayaponia americana +
Cayaponia quinqueloba +
Ceanothus americanus +
Ceanothus arboreus +
Ceanothus arcuatus +
Ceanothus confusus +
Ceanothus cordulatus +
Ceanothus crassifolius +
Ceanothus crassifolius var. crassifolius +
Ceanothus crassifolius var. planus +
Ceanothus cuneatus +
Ceanothus cuneatus var. cuneatus +
Ceanothus cuneatus var. fascicularis +
Ceanothus cuneatus var. ramulosus +
Ceanothus cuneatus var. rigidus +
Ceanothus cyaneus +
Ceanothus dentatus +
Ceanothus divergens +
Ceanothus diversifolius +
Ceanothus fendleri +
Ceanothus ferrisiae +
Ceanothus foliosus +
Ceanothus foliosus var. foliosus +
Ceanothus foliosus var. medius +
Ceanothus foliosus var. vineatus +
Ceanothus fresnensis +
Ceanothus gloriosus +
Ceanothus gloriosus var. exaltatus +
Ceanothus gloriosus var. gloriosus +
Ceanothus gloriosus var. porrectus +
Ceanothus griseus +
Ceanothus hearstiorum +
Ceanothus herbaceus +
Ceanothus impressus +
Ceanothus impressus var. impressus +
Ceanothus impressus var. nipomensis +
Ceanothus incanus +
Ceanothus integerrimus +
Ceanothus jepsonii +
Ceanothus jepsonii var. albiflorus +
Ceanothus jepsonii var. jepsonii +
Ceanothus lemmonii +
Ceanothus leucodermis +
Ceanothus maritimus +
Ceanothus martini +
Ceanothus masonii +
Ceanothus megacarpus +
Ceanothus megacarpus var. insularis +
Ceanothus megacarpus var. megacarpus +
Ceanothus microphyllus +
Ceanothus oliganthus +
Ceanothus oliganthus var. oliganthus +
Ceanothus oliganthus var. orcuttii +
Ceanothus oliganthus var. sorediatus +
Ceanothus ophiochilus +
Ceanothus otayensis +
Ceanothus palmeri +
Ceanothus papillosus +
Ceanothus parryi +
Ceanothus parvifolius +
Ceanothus pauciflorus +
Ceanothus perplexans +
Ceanothus pinetorum +
Ceanothus prostratus +
Ceanothus prostratus var. occidentalis +
Ceanothus prostratus var. prostratus +
Ceanothus pumilus +
Ceanothus purpureus +
Ceanothus roderickii +
Ceanothus sanguineus +
Ceanothus sonomensis +
Ceanothus spinosus +
Ceanothus subg. Ceanothus +
Ceanothus subg. Cerastes +
Ceanothus thyrsiflorus +
Ceanothus tomentosus +
Ceanothus tomentosus var. olivaceus +
Ceanothus tomentosus var. tomentosus +
Ceanothus velutinus +
Ceanothus velutinus var. laevigatus +
Ceanothus velutinus var. velutinus +
Ceanothus verrucosus +
Celastraceae +
Celastrus orbiculatus +
Celastrus scandens +
Celosia argentea +
Celosia cristata +
Celosia nitida +
Celosia palmeri +
Celosia trigyna +
Celtica gigantea +
Celtis laevigata +
Celtis lindheimeri +
Celtis occidentalis +
Celtis pallida +
Celtis reticulata +
Celtis tenuifolia +
Cenchrus biflorus +
Cenchrus brownii +
Cenchrus echinatus +
Cenchrus gracillimus +
Cenchrus longispinus +
Cenchrus myosuroides +
Cenchrus spinifex +
Cenchrus tribuloides +
Centaurea benedicta +
Centaurea calcitrapa +
Centaurea cyanus +
Centaurea depressa +
Centaurea diffusa +
Centaurea diluta +
Centaurea iberica +
Centaurea jacea +
Centaurea macrocephala +
Centaurea melitensis +
Centaurea montana +
Centaurea nigra +
Centaurea nigrescens +
Centaurea phrygia +
Centaurea scabiosa +
Centaurea solstitialis +
Centaurea stoebe +
Centaurea stoebe subsp. micranthos +
Centaurea sulphurea +
Centaurea virgata +
Centaurea virgata subsp. squarrosa +
Centaurea ×moncktonii +
Centaurium +
Centaurium erythraea +
Centaurium pulchellum +
Centaurium tenuiflorum +
Centratherum +
Centratherum punctatum +
Centromadia +
Centromadia fitchii +
Centromadia parryi +
Centromadia parryi subsp. australis +
Centromadia parryi subsp. congdonii +
Centromadia parryi subsp. parryi +
Centromadia parryi subsp. rudis +
Centromadia pungens +
Centromadia pungens subsp. laevis +
Centromadia pungens subsp. pungens +
Centrostegia +
Centrostegia thurberi +
Cephalanthera +
Cephalanthera austiniae +
Cerastium aleuticum +
Cerastium alpinum +
Cerastium alpinum subsp. alpinum +
Cerastium alpinum subsp. lanatum +
Cerastium arcticum +
Cerastium arvense +
Cerastium arvense subsp. arvense +
Cerastium arvense subsp. strictum +
Cerastium axillare +
Cerastium beeringianum +
Cerastium bialynickii +
Cerastium brachypetalum +
Cerastium brachypodum +
Cerastium cerastoides +
Cerastium dichotomum +
Cerastium diffusum +
Cerastium dubium +
Cerastium fastigiatum +
Cerastium fischerianum +
Cerastium fontanum +
Cerastium fontanum subsp. fontanum +
Cerastium fontanum subsp. vulgare +
Cerastium glomeratum +
Cerastium maximum +
Cerastium nutans +
Cerastium nutans var. nutans +
Cerastium nutans var. obtectum +
Cerastium pumilum +
Cerastium regelii +
Cerastium semidecandrum +
Cerastium terrae-novae +
Cerastium texanum +
Cerastium tomentosum +
Cerastium velutinum +
Cerastium velutinum var. velutinum +
Cerastium velutinum var. villossissimum +
Cerastium viride +
Ceratiola ericoides +
Ceratodon heterophyllus +
Ceratodon purpureus +
Ceratodon purpureus subsp. conicus +
Ceratodon purpureus subsp. purpureus +
Ceratodon purpureus subsp. stenocarpus +
Ceratophyllaceae +
Ceratophyllum +
Ceratophyllum demersum +
Ceratophyllum echinatum +
Ceratophyllum muricatum +
Ceratophyllum muricatum subsp. australe +
Ceratopteris +
Ceratopteris pteridoides +
Ceratopteris richardii +
Ceratopteris thalictroides +
Ceratotheca +
Ceratotheca triloba +
Cercocarpus +
Cercocarpus betuloides +
Cercocarpus betuloides var. betuloides +
Cercocarpus betuloides var. blancheae +
Cercocarpus betuloides var. traskiae +
Cercocarpus breviflorus +
Cercocarpus ledifolius +
Cercocarpus ledifolius var. intermontanus +
Cercocarpus ledifolius var. intricatus +
Cercocarpus ledifolius var. ledifolius +
Cercocarpus montanus +
Cervantesiaceae +
Cestrum diurnum +
Cestrum nocturnum +
Cestrum parqui +
Cevallia sinuata +
Chaenactis +
Chaenactis alpigena +
Chaenactis artemisiifolia +
Chaenactis carphoclinia +
Chaenactis carphoclinia var. carphoclinia +
Chaenactis carphoclinia var. peirsonii +
Chaenactis cusickii +
Chaenactis douglasii +
Chaenactis douglasii var. alpina +
Chaenactis douglasii var. douglasii +
Chaenactis evermannii +
Chaenactis fremontii +
Chaenactis glabriuscula +
Chaenactis glabriuscula var. glabriuscula +
Chaenactis glabriuscula var. heterocarpha +
Chaenactis glabriuscula var. lanosa +
Chaenactis glabriuscula var. megacephala +
Chaenactis glabriuscula var. orcuttiana +
Chaenactis macrantha +
Chaenactis nevadensis +
Chaenactis nevii +
Chaenactis parishii +
Chaenactis santolinoides +
Chaenactis sect. Acarphaea +
Chaenactis sect. Chaenactis +
Chaenactis sect. Macrocarphus +
Chaenactis stevioides +
Chaenactis suffrutescens +
Chaenactis thompsonii +
Chaenactis xantiana +
Chaenomeles +
Chaenomeles japonica +
Chaenomeles speciosa +
Chaenorhinum +
Chaenorhinum minus +
Chaenorhinum minus subsp. minus +
Chaetadelpha +
Chaetadelpha wheeleri +
Chaetopappa +
Chaetopappa asteroides +
Chaetopappa asteroides var. asteroides +
Chaetopappa asteroides var. grandis +
Chaetopappa bellidifolia +
Chaetopappa bellioides +
Chaetopappa effusa +
Chaetopappa ericoides +
Chaetopappa hersheyi +
Chaetopappa imberbis +
Chaetopappa parryi +
Chamaebatia +
Chamaebatia australis +
Chamaebatia foliolosa +
Chamaebatiaria +
Chamaebatiaria millefolium +
Chamaechaenactis +
Chamaechaenactis scaposa +
Chamaecyparis +
Chamaecyparis lawsoniana +
Chamaecyparis nootkatensis +