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Organism
  Plantae
      Tracheophyta
            Magnoliopsida
                    Asterales
                            Asteraceae
                                     Acamptopappus
                                             Acamptopappus shockleyi
                                             Acamptopappus sphaerocephalus
                                               Acamptopappus sphaerocephalus var. hirtellus
                                               Acamptopappus sphaerocephalus var. sphaerocephalus
                                                     [Aplopappus sphaerocephalus]
                                     Acanthospermum
                                             Acanthospermum australe
                                                   [Acanthospermum xanthioides]
                                                   [Melampodium australe]
                                             Acanthospermum hispidum
                                             Acanthospermum humile
                                                   [Melampodium humile]
                                     Acanthoxanthium
                                     Achaetogeron
                                     Achillea
                                             Achillea ageratum
                                             Achillea alpina
                                               Achillea alpina subsp. multiflora
                                                     [Achillea multiflora]
                                             Achillea borealis
                                             Achillea distans
                                                   [Achillea dentifera]
                                               Achillea distans subsp. distans
                                                     [Achillea dentifera]
                                               Achillea distans subsp. stricta
                                                     [Achillea magna]
                                             Achillea filipendulina
                                             Achillea ligustica
                                             Achillea millefolium
                                               Achillea millefolium var. alpicola
                                                     [Achillea alpicola]
                                                     [Achillea fusca]
                                                     [Achillea lanulosa subsp. alpicola]
                                                     [Achillea lanulosa var. alpicola]
                                                     [Achillea millefolium var. fusca]
                                                     [Achillea subalpina]
                                               Achillea millefolium var. arenicola
                                                     [Achillea arenicola]
                                                     [Achillea borealis subsp. arenicola]
                                                     [Achillea borealis var. arenicola]
                                                     [Achillea millefolium var. maritima]
                                               Achillea millefolium var. borealis
                                                     [Achillea borealis subsp. typica]
                                                     [Achillea millefolium subsp. atrotegula]
                                                     [Achillea millefolium subsp. borealis]
                                                     [Achillea millefolium var. fulva]
                                                     [Achillea millefolium var. parviligula]
                                                     [Achillea millefolium var. parvula]
                                               Achillea millefolium var. californica
                                                     [Achillea borealis subsp. californica]
                                                     [Achillea borealis var. californica]
                                                     [Achillea californica]
                                               Achillea millefolium var. gigantea
                                                     [Achillea gigantea]
                                               Achillea millefolium var. litoralis
                                               Achillea millefolium var. millefolium
                                                     [Achillea magna]
                                               Achillea millefolium var. nigrescens
                                                     [Achillea nigrescens]
                                               Achillea millefolium var. occidentalis
                                                     [Achillea angustissima]
                                                     [Achillea aspleniifolia]
                                                     [Achillea eradiata]
                                                     [Achillea gracilis]
                                                     [Achillea lanulosa subsp. typica]
                                                     [Achillea lanulosa var. arachnoidea]
                                                     [Achillea lanulosa var. eradiata]
                                                     [Achillea lanulosa]
                                                     [Achillea laxiflora]
                                                     [Achillea millefolium subsp. lanulosa]
                                                     [Achillea millefolium subsp. occidentalis]
                                                     [Achillea millefolium subsp. pallidotegula]
                                                     [Achillea millefolium var. aspleniifolia]
                                                     [Achillea millefolium var. gracilis]
                                                     [Achillea millefolium var. lanulosa]
                                                     [Achillea millefolium var. rosea]
                                                     [Achillea millefolium var. russeolata]
                                                     [Achillea occidentalis]
                                                     [Achillea rosea]
                                               Achillea millefolium var. pacifica
                                                     [Achillea pacifica]
                                               Achillea millefolium var. puberula
                                                     [Achillea puberula]
                                             Achillea nobilis
                                             Achillea obscura
                                                   [Achillea aspleniifolia]
                                             Achillea ptarmica
                                             Achillea sibirica
                                                   [Achillea multiflora]
                                             Achillea tomentosa
                                     Achyrachaena
                                             Achyrachaena mollis
                                     Acmella
                                             Acmella decumbens
                                                   [Spilanthes americana var. stolonifera]
                                                   [Spilanthes stolonifera]
                                             Acmella iodiscaea
                                                   [Spilanthes iodiscaea]
                                             Acmella oppositifolia
                                                   [Spilanthes americana]
                                             Acmella pilosa
                                             Acmella pusilla
                                                   [Spilanthes pusilla]
                                             Acmella repens
                                                   [Acmella oppositifolia var. repens]
                                                   [Spilanthes americana var. repens]
                                     Acnida
                                             Acnida tamariscina
                                     Acourtia
                                             Acourtia microcephala
                                                   [Perezia microcephala]
                                             Acourtia molinana
                                             Acourtia nana
                                                   [Perezia nana]
                                             Acourtia runcinata
                                                   [Perezia runcinata]
                                             Acourtia thurberi
                                                   [Perezia thurberi]
                                             Acourtia wrightii
                                                   [Perezia wrightii]
                                     Acroptilon
                                     Adenocaulon
                                             Adenocaulon bicolor
                                     Adenolinum
                                     Adenophyllum
                                             Adenophyllum cooperi
                                                   [Dyssodia cooperi]
                                             Adenophyllum porophylloides
                                                   [Dyssodia porophylloides]
                                             Adenophyllum porophyllum
                                                   [Pteronia porophylla]
                                             Adenophyllum wrightii
                                                   [Dyssodia neomexicana]
                                                   [Hymenatherum neomexicanum]
                                     Adenoropium
                                     Adenostemma
                                             Adenostemma lavenia
                                                   [Verbesina lavenia]
                                             Adenostemma verbesina
                                                   [Cotula verbesina]
                                             Adenostemma viscosum
                                     Adenostyles
                                             Adenostyles alpina
                                               Adenostyles alpina subsp. alpina
                                                     [Cacalia reniformis]
                                     Ageratina
                                             Ageratina adenophora
                                                   [Eupatorium adenophorum]
                                                   [Eupatorium glandulosum]
                                             Ageratina altissima
                                                   [Ageratum altissimum]
                                                   [Eupatorium odoratum]
                                                   [Eupatorium rugosum var. chlorolepis]
                                                   [Eupatorium rugosum var. tomentellum]
                                                   [Eupatorium rugosum var. villicaule]
                                                   [Eupatorium rugosum]
                                                   [Eupatorium urticifolium var. tomentellum]
                                               Ageratina altissima var. altissima
                                                     [Ageratum altissimum]
                                                     [Eupatorium rugosum var. chlorolepis]
                                                     [Eupatorium rugosum var. tomentellum]
                                                     [Eupatorium rugosum var. villicaule]
                                                     [Eupatorium rugosum]
                                                     [Eupatorium urticifolium var. tomentellum]
                                               Ageratina altissima var. angustata
                                                     [Eupatorium rugosum var. angustata]
                                               Ageratina altissima var. roanensis
                                                     [Eupatorium roanense]
                                                     [Eupatorium rugosum var. roanense]
                                                     [Eupatorium urticifolium]
                                             Ageratina aromatica
                                                   [Eupatorium latidens]
                                               Ageratina aromatica var. aromatica
                                                     [Eupatorium aromaticum]
                                                     [Eupatorium latidens]
                                               Ageratina aromatica var. incisa
                                                     [Eupatorium aromaticum var. incisum]
                                             Ageratina havanensis
                                                   [Eupatorium havanense]
                                                   [Eupatorium texense]
                                             Ageratina herbacea
                                                   [Eupatorium herbaceum]
                                             Ageratina jucunda
                                                   [Eupatorium juncundum]
                                             Ageratina lemmonii
                                                   [Eupatorium lemmonii]
                                             Ageratina liebmannii
                                             Ageratina luciae-brauniae
                                                   [Eupatorium luciae-brauniae]
                                             Ageratina occidentalis
                                                   [Eupatorium occidentale]
                                             Ageratina paupercula
                                                   [Eupatorium pauperculum]
                                             Ageratina pichinchensis
                                             Ageratina resiniflua
                                                   [Eupatorium resinifluum]
                                             Ageratina riparia
                                                   [Eupatorium riparium]
                                             Ageratina rothrockii
                                                   [Eupatorium rothrockii]
                                             Ageratina shastensis
                                                   [Eupatorium shastense]
                                             Ageratina wrightii
                                                   [Eupatorium wrightii]
                                     Ageratum
                                             Ageratum conyzoides
                                             Ageratum corymbosum
                                             Ageratum guatemalense
                                             Ageratum houstonianum
                                             Ageratum maritimum
                                                   [Ageratum littorale]
                                     Agnorhiza
                                             Agnorhiza bolanderi
                                                   [Balsamorhiza bolanderi]
                                                   [Wyethia bolanderi]
                                             Agnorhiza elata
                                                   [Wyethia elata]
                                             Agnorhiza invenusta
                                                   [Wyethia invenusta]
                                             Agnorhiza ovata
                                                   [Wyethia ovata]
                                             Agnorhiza reticulata
                                                   [Wyethia reticulata]
                                     Agoseris
                                             Agoseris alpestris
                                             Agoseris apargioides
                                                   [Troximon apargioides]
                                               Agoseris apargioides var. apargioides
                                                     [Troximon apargioides]
                                               Agoseris apargioides var. eastwoodiae
                                                     [Agoseris eastwoodiae]
                                               Agoseris apargioides var. maritima
                                                     [Agoseris apargioides subsp. maritima]
                                                     [Agoseris maritima]
                                             Agoseris aurantiaca
                                                   [Agoseris lackschewitzii]
                                                   [Troximon aurantiacum]
                                               Agoseris aurantiaca var. aurantiaca
                                                     [Agoseris graminifolia]
                                                     [Agoseris rostrata]
                                                     [Troximon aurantiacum]
                                               Agoseris aurantiaca var. carnea
                                                     [Agoseris carnea]
                                               Agoseris aurantiaca var. purpurea
                                                     [Agoseris arizonica]
                                                     [Agoseris aurantiaca subsp. purpurea]
                                                     [Agoseris glauca var. cronquistii]
                                                     [Agoseris graminifolia]
                                                     [Agoseris rostrata]
                                             Agoseris coronopifolia
                                                   [Taraxacum pumilum]
                                             Agoseris dasycarpa
                                             Agoseris elata
                                                   [Agoseris laciniata]
                                                   [Stylopappus elatus]
                                             Agoseris glauca
                                                   [Troximon glaucum]
                                               Agoseris glauca var. agrestis
                                                     [Agoseris agrestis]
                                               Agoseris glauca var. dasycephala
                                                     [Agoseris glauca subsp. scorzonerifolia]
                                                     [Agoseris glauca var. asper]
                                                     [Agoseris glauca var. pumila]
                                                     [Agoseris scorzonerifolia]
                                                     [Agoseris turbinata]
                                                     [Troximon glaucum var. dasycephalum]
                                               Agoseris glauca var. glauca
                                                     [Agoseris turbinata]
                                                     [Troximon glaucum]
                                               Agoseris glauca var. laciniata
                                                     [Agoseris arizonica]
                                                     [Agoseris glauca var. parviflora]
                                                     [Macrorhynchus glaucus var. laciniatus]
                                                     [Troximon parviflorum]
                                             Agoseris grandiflora
                                                   [Agoseris laciniata]
                                                   [Agoseris plebeja]
                                                   [Troximon grandiflorum]
                                               Agoseris grandiflora var. leptophylla
                                             Agoseris heterophylla
                                                   [Agoseris heterophylla var. kymapleura]
                                                   [Macrorhynchus heterophyllus]
                                               Agoseris heterophylla var. cryptopleura
                                                     [Agoseris heterophylla subsp. californica]
                                                     [Agoseris heterophylla var. crenulata]
                                                     [Agoseris heterophylla var. turgida]
                                               Agoseris heterophylla var. heterophylla
                                                     [Agoseris heterophylla subsp. californica]
                                                     [Agoseris heterophylla subsp. normalis]
                                                     [Agoseris heterophylla var. kymapleura]
                                                     [Macrorhynchus heterophyllus]
                                               Agoseris heterophylla var. quentinii
                                             Agoseris hirsuta
                                             Agoseris montana
                                             Agoseris monticola
                                                   [Agoseris glauca var. monticola]
                                             Agoseris parviflora
                                                   [Agoseris glauca var. parviflora]
                                                   [Troximon parviflorum]
                                             Agoseris retrorsa
                                                   [Macrorhynchus retrorsus]
                                     Alcina
                                     Aldama
                                             Aldama cordifolia
                                                   [Viguiera cordifolia]
                                             Aldama dentata
                                             Aldama phenax
                                                   [Viguiera phenax]
                                     Almutaster
                                             Almutaster pauciflorus
                                                   [Aster hydrophilus]
                                                   [Aster pauciflorus]
                                     Amauria
                                     Amauriopsis
                                     Amberboa
                                             Amberboa moschata
                                                   [Centaurea moschata]
                                     Amblyolepis
                                             Amblyolepis setigera
                                                   [Helenium setigerum]
                                     Amblyopappus
                                             Amblyopappus pusillus
                                     Ambrosia
                                             Ambrosia acanthicarpa
                                                   [Franseria acanthicarpa]
                                                   [Gaertneria acanthicarpa]
                                             Ambrosia ambrosioides
                                                   [Franseria ambrosioides]
                                             Ambrosia artemisiifolia
                                               Ambrosia artemisiifolia var. artemisiifolia
                                               Ambrosia artemisiifolia var. elatior
                                                     [Ambrosia elatior]
                                               Ambrosia artemisiifolia var. paniculata
                                                     [Ambrosia glandulosa]
                                                     [Ambrosia monophylla]
                                                     [Ambrosia paniculata]
                                             Ambrosia bidentata
                                             Ambrosia canescens
                                             Ambrosia chamissonis
                                                   [Ambrosia chamissonis f. bipinnatisecta]
                                                   [Ambrosia chamissonis var. bipinnatisecta]
                                                   [Franseria chamissonis f. bipinnatisecta]
                                                   [Franseria chamissonis subsp. bipinnatisecta]
                                                   [Franseria chamissonis var. bipinnatisecta]
                                                   [Franseria chamissonis]
                                             Ambrosia cheiranthifolia
                                             Ambrosia chenopodiifolia
                                                   [Franseria chenopodiifolia]
                                             Ambrosia confertiflora
                                                   [Franseria confertiflora]
                                                   [Franseria strigulosa]
                                                   [Gaertneria tenuifolia]
                                             Ambrosia cordifolia
                                                   [Franseria cordifolia]
                                             Ambrosia cumanensis
                                             Ambrosia deltoidea
                                                   [Franseria deltoidea]
                                             Ambrosia dumosa
                                                   [Franseria dumosa]
                                             Ambrosia eriocentra
                                                   [Franseria eriocentra]
                                             Ambrosia grayi
                                                   [Franseria tomentosa]
                                                   [Gaertnera tomentosa]
                                                   [Gaertneria grayi]
                                             Ambrosia helenae
                                             Ambrosia hispida
                                             Ambrosia ilicifolia
                                                   [Franseria ilicifolia]
                                             Ambrosia intergradiens
                                             Ambrosia linearis
                                                   [Franseria linearis]
                                             Ambrosia monogyra
                                                   [Hymenoclea monogyra]
                                             Ambrosia peruviana
                                             Ambrosia psilostachya
                                                   [Ambrosia californica]
                                                   [Ambrosia coronopifolia]
                                                   [Ambrosia psilostachya var. californica]
                                                   [Ambrosia psilostachya var. lindheimeriana]
                                                   [Ambrosia rugelii]
                                               Ambrosia psilostachya var. coronopifolia
                                                     [Ambrosia coronopifolia]
                                             Ambrosia pumila
                                                   [Franseria pumila]
                                             Ambrosia salsola
                                                   [Hymenoclea salsola var. salsola]
                                                   [Hymenoclea salsola]
                                               Ambrosia salsola var. salsola
                                             Ambrosia sandersonii
                                                   [Hymenoclea sandersonii]
                                             Ambrosia tenuifolia
                                             Ambrosia tomentosa
                                                   [Franseria discolor]
                                                   [Franseria tomentosa]
                                                   [Gaertneria discolor]
                                                   [Gaertneria tomentosa]
                                             Ambrosia trifida
                                                   [Ambrosia trifida var. integrifolia]
                                               Ambrosia trifida var. texana
                                                     [Ambrosia aptera]
                                                     [Ambrosia trifida var. aptera]
                                               Ambrosia trifida var. trifida
                                                     [Ambrosia trifida var. integrifolia]
                                     Amellus
                                     Ampelaster
                                             Ampelaster carolinianus
                                                   [Aster carolinianus]
                                                   [Lasallea caroliniana]
                                                   [Virgulus carolinianus]
                                     Amphiachyris
                                             Amphiachyris amoena
                                                   [Xanthocephalum amoenum var. intermedium]
                                                   [Xanthocephalum amoenum]
                                             Amphiachyris amoenum
                                                   [Xanthocephalum amoenum]
                                             Amphiachyris dracunculoides
                                                   [Brachyris dracunculoides]
                                                   [Gutierrezia dracunculoides]
                                                   [Xanthocephalum amoenum var. intermedium]
                                                   [Xanthocephalum dracunculoides]
                                     Amphipappus
                                             Amphipappus fremontii
                                               Amphipappus fremontii subsp. fremontii
                                               Amphipappus fremontii var. fremontii
                                               Amphipappus fremontii var. spinosus
                                                     [Amphipappus fremontii subsp. spinosus]
                                     Amphistelma
                                     Anacyclus
                                             Anacyclus clavatus
                                                   [Anacyclus tomentosus]
                                                   [Anacylus clavatus]
                                                   [Anacylus tomentosus]
                                     Anacylus
                                     Anaphalis
                                             Anaphalis bicolor
                                                   [Gnaphalium bicolor]
                                             Anaphalis margaritacea
                                                   [Anaphalis margaritacea var. angustior]
                                                   [Anaphalis margaritacea var. intercedens]
                                                   [Anaphalis margaritacea var. occidentalis]
                                                   [Anaphalis margaritacea var. revoluta]
                                                   [Anaphalis margaritacea var. subalpina]
                                                   [Anaphalis occidentalis]
                                                   [Gnaphalium margaritaceum]
                                               Anaphalis margaritacea subsp. margaritacea
                                                     [Anaphalis margaritacea subsp. angustior]
                                                     [Anaphalis margaritacea var. angustior]
                                                     [Anaphalis margaritacea var. intercedens]
                                                     [Anaphalis margaritacea var. occidentalis]
                                                     [Anaphalis margaritacea var. revoluta]
                                                     [Anaphalis margaritacea var. subalpina]
                                                     [Anaphalis occidentalis]
                                                     [Gnaphalium margaritaceum]
                                     Anastrophus
                                     Anatherum
                                     Ancistrocarphus
                                             Ancistrocarphus filagineus
                                                   [Stylocline filaginea var. depressa]
                                                   [Stylocline filaginea]
                                     Anisocarpus
                                             Anisocarpus scabridus
                                                   [Raillardella scabrida]
                                                   [Raillardiopsis scabrida]
                                     Anisocoma
                                             Anisocoma acaulis
                                     Antennaria
                                             Antennaria alpina
                                                   [Antennaria alpina subsp. canescens]
                                                   [Antennaria alpina var. canescens]
                                                   [Antennaria alpina var. compacta]
                                                   [Antennaria alpina var. glabrata]
                                                   [Antennaria alpina var. intermedia]
                                                   [Antennaria alpina var. stolonifera]
                                                   [Antennaria alpina var. ungavensis]
                                                   [Antennaria arenicola]
                                                   [Antennaria atriceps]
                                                   [Antennaria bayardii]
                                                   [Antennaria boecheriana]
                                                   [Antennaria borealis]
                                                   [Antennaria brunnescens]
                                                   [Antennaria cana]
                                                   [Antennaria canescens subsp. porsildii]
                                                   [Antennaria canescens var. pseudoporsildii]
                                                   [Antennaria columnaris]
                                                   [Antennaria compacta]
                                                   [Antennaria confusa]
                                                   [Antennaria crymophila]
                                                   [Antennaria foggii]
                                                   [Antennaria friesiana subsp. compacta]
                                                   [Antennaria glabrata]
                                                   [Antennaria groenlandica]
                                                   [Antennaria hansii]
                                                   [Antennaria intermedia]
                                                   [Antennaria labradorica]
                                                   [Antennaria longii]
                                                   [Antennaria media subsp. compacta]
                                                   [Antennaria pallida]
                                                   [Antennaria pedunculata]
                                                   [Antennaria sornborgeri]
                                                   [Antennaria stolonifera]
                                                   [Antennaria subcanescens]
                                                   [Antennaria ungavensis]
                                                   [Antennaria vexillifera]
                                                   [Antennaria wiegandii]
                                                   [Gnaphalium alpinum]
                                             Antennaria anaphaloides
                                                   [Antennaria pulcherrima subsp. anaphaloides]
                                                   [Antennaria pulcherrima var. anaphaloides]
                                             Antennaria arcuata
                                             Antennaria argentea
                                                   [Antennaria luzuloides var. argentea]
                                             Antennaria aromatica
                                             Antennaria canescens
                                             Antennaria carpatica
                                             Antennaria corymbosa
                                                   [Antennaria acuta]
                                                   [Antennaria dioica var. corymbosa]
                                                   [Antennaria hygrophila]
                                                   [Antennaria nardina]
                                             Antennaria densifolia
                                                   [Antennaria ellyae]
                                             Antennaria dimorpha
                                                   [Antennaria dimorpha var. integra]
                                                   [Antennaria dimorpha var. latisquama]
                                                   [Antennaria dimorpha var. macrocephala]
                                                   [Antennaria latisquama]
                                                   [Antennaria macrocephala]
                                                   [Gnaphalium dimorphum]
                                             Antennaria dioica
                                                   [Antennaria dioica var. hyperborea]
                                                   [Antennaria hyperborea]
                                                   [Antennaria insularis]
                                                   [Gnaphalium dioicum]
                                             Antennaria flagellaris
                                                   [Antennaria dimorpha var. flagellaris]
                                             Antennaria foliacea
                                             Antennaria friesiana
                                               Antennaria friesiana subsp. alaskana
                                                     [Antennaria alaskana]
                                               Antennaria friesiana subsp. friesiana
                                                     [Antennaria alpina var. friesiana]
                                                     [Antennaria angustifolia]
                                                     [Antennaria ekmaniana]
                                               Antennaria friesiana subsp. neoalaskana
                                                     [Antennaria neoalaskana]
                                             Antennaria geyeri
                                                   [Gnaphalium alienum]
                                             Antennaria howellii
                                               Antennaria howellii subsp. canadensis
                                                     [Antennaria canadensis]
                                                     [Antennaria neglecta var. canadensis]
                                                     [Antennaria neglecta var. randii]
                                                     [Antennaria neodioica subsp. canadensis]
                                                     [Antennaria neodioica var. randii]
                                                     [Antennaria randii]
                                                     [Antennaria spathulata]
                                               Antennaria howellii subsp. howellii
                                                     [Antennaria callilepis]
                                                     [Antennaria eximia]
                                                     [Antennaria neglecta subsp. howellii]
                                                     [Antennaria neglecta var. howellii]
                                                     [Antennaria neodioica subsp. howellii]
                                               Antennaria howellii subsp. neodioica
                                                     [Antennaria grandis]
                                                     [Antennaria neglecta var. attenuata]
                                                     [Antennaria neglecta var. neodioica]
                                                     [Antennaria neodioica var. attenuata]
                                                     [Antennaria neodioica var. chlorophylla]
                                                     [Antennaria neodioica var. grandis]
                                                     [Antennaria neodioica var. interjecta]
                                                     [Antennaria neodioica var. rupicola]
                                                     [Antennaria neodioica]
                                                     [Antennaria obovata]
                                                     [Antennaria rhodantha]
                                                     [Antennaria rupicola]
                                                     [Antennaria russellii]
                                               Antennaria howellii subsp. petaloidea
                                                     [Antennaria appendiculata]
                                                     [Antennaria concolor]
                                                     [Antennaria neglecta var. petaloidea]
                                                     [Antennaria neodioica subsp. petaloidea]
                                                     [Antennaria neodioica var. petaloidea]
                                                     [Antennaria pedicellata]
                                                     [Antennaria petaloidea var. scariosa]
                                                     [Antennaria petaloidea var. subcorymbosa]
                                                     [Antennaria stenolepis]
                                             Antennaria lanata
                                                   [Antennaria carpatica var. lanata]
                                             Antennaria luzuloides
                                               Antennaria luzuloides subsp. aberrans
                                                     [Antennaria argentea subsp. aberrans]
                                                     [Antennaria luzuloides var. microcephala]
                                                     [Antennaria microcephala]
                                                     [Antennaria pyramidata]
                                               Antennaria luzuloides subsp. luzuloides
                                                     [Antennaria luzuloides var. oblanceolata]
                                                     [Antennaria oblanceolata]
                                             Antennaria macounii
                                             Antennaria marginata
                                                   [Antennaria dioica var. marginata]
                                                   [Antennaria fendleri]
                                                   [Antennaria peramoena]
                                             Antennaria media
                                                   [Antennaria alpina var. media]
                                                   [Antennaria austromontana]
                                                   [Antennaria candida]
                                                   [Antennaria densa]
                                                   [Antennaria gormanii]
                                                   [Antennaria modesta]
                                                   [Antennaria mucronata]
                                             Antennaria microphylla
                                                   [Antennaria bracteosa]
                                                   [Antennaria groenlandica]
                                                   [Antennaria nitida]
                                                   [Antennaria parvifolia var. bracteosa]
                                                   [Antennaria rosea var. nitida]
                                                   [Antennaria solstitialis]
                                             Antennaria monocephala
                                               Antennaria monocephala subsp. angustata
                                                     [Antennaria alpina var. megacephala]
                                                     [Antennaria angustata]
                                                     [Antennaria burwellensis]
                                                     [Antennaria congesta]
                                                     [Antennaria fernaldiana]
                                                     [Antennaria friesiana var. megacephala]
                                                     [Antennaria hudsonica]
                                                     [Antennaria megacephala]
                                                     [Antennaria pygmaea]
                                                     [Antennaria tansleyi]
                                                     [Antennaria tweedsmurii]
                                               Antennaria monocephala subsp. monocephala
                                                     [Antennaria exilis]
                                                     [Antennaria monocephala subsp. philonipha]
                                                     [Antennaria monocephala var. exilis]
                                                     [Antennaria nitens]
                                                     [Antennaria philonipha]
                                             Antennaria neglecta
                                                   [Antennaria angustiarum]
                                                   [Antennaria athabascensis]
                                                   [Antennaria campestris var. athabascensis]
                                                   [Antennaria campestris]
                                                   [Antennaria chelonica]
                                                   [Antennaria erosa]
                                                   [Antennaria howellii var. athabascensis]
                                                   [Antennaria howellii var. campestris]
                                                   [Antennaria longifolia]
                                                   [Antennaria lunellii]
                                                   [Antennaria nebraskensis]
                                                   [Antennaria neglecta var. athabascensis]
                                                   [Antennaria neglecta var. campestris]
                                                   [Antennaria parvula]
                                                   [Antennaria wilsonii]
                                             Antennaria oblancifolia
                                             Antennaria parlinii
                                               Antennaria parlinii subsp. fallax
                                                     [Antennaria ambigens]
                                                     [Antennaria ampla]
                                                     [Antennaria arkansana]
                                                     [Antennaria arnoglossa var. ambigens]
                                                     [Antennaria bifrons]
                                                     [Antennaria brainerdii]
                                                     [Antennaria calophylla]
                                                     [Antennaria fallax var. calophylla]
                                                     [Antennaria fallax]
                                                     [Antennaria farwellii]
                                                     [Antennaria greenei]
                                                     [Antennaria mesochora]
                                                     [Antennaria munda]
                                                     [Antennaria occidentalis]
                                                     [Antennaria parlinii var. farwellii]
                                                     [Antennaria plantaginifolia var. ambigens]
                                                     [Antennaria umbellata]
                                               Antennaria parlinii subsp. parlinii
                                                     [Antennaria arnoglossa]
                                                     [Antennaria parlinii var. arnoglossa]
                                                     [Antennaria plantaginifolia var. arnoglossa]
                                                     [Antennaria plantaginifolia var. parlinii]
                                             Antennaria parvifolia
                                                   [Antennaria aprica var. minuscula]
                                                   [Antennaria aprica]
                                                   [Antennaria aureola]
                                                   [Antennaria holmii]
                                                   [Antennaria latisquamea]
                                                   [Antennaria minuscula]
                                                   [Antennaria obtusata]
                                                   [Antennaria pumila]
                                                   [Antennaria recurva]
                                                   [Antennaria rhodantha]
                                                   [Antennaria rhodanthus]
                                             Antennaria petaloidea
                                             Antennaria plantaginifolia
                                                   [Antennaria caroliniana]
                                                   [Antennaria decipiens]
                                                   [Antennaria denikeana]
                                                   [Antennaria nemoralis]
                                                   [Antennaria petiolata]
                                                   [Antennaria pinetorum]
                                                   [Antennaria plantaginifolia var. petiolata]
                                                   [Gnaphalium plantaginifolium]
                                             Antennaria porsildii
                                                   [Antennaria canescens subsp. porsildii]
                                             Antennaria pulchella
                                                   [Antennaria alpina var. scabra]
                                                   [Antennaria media subsp. ciliata]
                                                   [Antennaria media subsp. pulchella]
                                                   [Antennaria scabra]
                                             Antennaria pulcherrima
                                               Antennaria pulcherrima subsp. pulcherrima
                                                     [Antennaria carpatica var. pulcherrima]
                                                     [Antennaria pulcherrima var. angustisquama]
                                                     [Antennaria pulcherrima var. sordida]
                                             Antennaria racemosa
                                                   [Antennaria petasites]
                                                   [Antennaria piperi]
                                             Antennaria rosea
                                               Antennaria rosea subsp. arida
                                                     [Antennaria arida subsp. viscidula]
                                                     [Antennaria arida]
                                                     [Antennaria scariosa]
                                               Antennaria rosea subsp. confinis
                                                     [Antennaria affinis]
                                                     [Antennaria albicans]
                                                     [Antennaria angustifolia]
                                                     [Antennaria arida var. humilis]
                                                     [Antennaria breitungii]
                                                     [Antennaria brevistyla]
                                                     [Antennaria concinna]
                                                     [Antennaria confinis]
                                                     [Antennaria dioica var. kernensis]
                                                     [Antennaria elegans]
                                                     [Antennaria foliacea var. humilis]
                                                     [Antennaria hansii]
                                                     [Antennaria incarnata]
                                                     [Antennaria laingii]
                                                     [Antennaria leontopodioides]
                                                     [Antennaria leuchippii]
                                                     [Antennaria rosea var. angustifolia]
                                                     [Antennaria sedoides]
                                                     [Antennaria sordida]
                                                     [Antennaria straminea]
                                                     [Antennaria subviscosa]
                                                     [Antennaria tomentella]
                                               Antennaria rosea subsp. pulvinata
                                                     [Antennaria affinis]
                                                     [Antennaria albescens]
                                                     [Antennaria fusca]
                                                     [Antennaria gaspensis]
                                                     [Antennaria howellii subsp. gaspensis]
                                                     [Antennaria isolepis]
                                                     [Antennaria maculata]
                                                     [Antennaria manicouagana]
                                                     [Antennaria media subsp. fusca]
                                                     [Antennaria neglecta var. gaspensis]
                                                     [Antennaria neodioica var. gaspensis]
                                                     [Antennaria peasei]
                                                     [Antennaria pulvinata subsp. albescens]
                                                     [Antennaria pulvinata]
                                                     [Antennaria sansonii]
                                                     [Antennaria straminea]
                                               Antennaria rosea subsp. rosea
                                                     [Antennaria acuminata]
                                                     [Antennaria alborosea]
                                                     [Antennaria chlorantha]
                                                     [Antennaria dioica var. rosea]
                                                     [Antennaria formosa]
                                                     [Antennaria hendersonii]
                                                     [Antennaria imbricata]
                                                     [Antennaria lanulosa]
                                                     [Antennaria neodioica var. chlorantha]
                                                     [Antennaria oxyphylla]
                                                     [Antennaria rosea subsp. divaricata]
                                                     [Antennaria rosea var. nitida]
                                                     [Antennaria speciosa]
                                               Antennaria rosea var. imbricata
                                             Antennaria rosulata
                                                   [Antennaria bakeri]
                                                   [Antennaria sierrae-blancae]
                                             Antennaria soliceps
                                             Antennaria solitaria
                                                   [Antennaria plantaginifolia var. monocephala]
                                             Antennaria stenophylla
                                                   [Antennaria alpina var. stenophylla]
                                                   [Antennaria leucophaea]
                                             Antennaria suffrutescens
                                             Antennaria umbrinella
                                                   [Antennaria aizoides]
                                                   [Antennaria flavescens]
                                                   [Antennaria reflexa]
                                             Antennaria virginica
                                                   [Antennaria neglecta var. argillicola]
                                                   [Antennaria virginica var. argillicola]
                                     Antenoron
                                     Anthacanthus
                                     Anthemis
                                             Anthemis arvensis
                                                   [Anthemis arvensis var. agrestis]
                                               Anthemis arvensis subsp. arvensis
                                                     [Anthemis arvensis var. agrestis]
                                             Anthemis cotula
                                                   [Maruta cotula]
                                             Anthemis secundiramea
                                             Anthemis tomentosa
                                               Anthemis tomentosa subsp. tomentosa
                                                     [Anthemis altissima]
                                     Antheropeas
                                     Anthocephalus
                                     Anthochloa
                                     Anthopogon
                                     Aphanostephus
                                             Aphanostephus pilosus
                                             Aphanostephus ramosissimus
                                               Aphanostephus ramosissimus var. humilis
                                                     [Aphanostephus arizonicus]
                                                     [Aphanostephus humilis]
                                                     [Aphanostephus potosinus]
                                                     [Leucopsidium humile]
                                               Aphanostephus ramosissimus var. ramosissimus
                                             Aphanostephus riddellii
                                             Aphanostephus skirrhobasis
                                               Aphanostephus skirrhobasis var. kidderi
                                                     [Aphanostephus kidderi]
                                               Aphanostephus skirrhobasis var. skirrhobasis
                                                     [Keerlia skirrhobasis]
                                               Aphanostephus skirrhobasis var. thalassius
                                             Aphanostephus skirrobasis
                                                   [Keerlia skirrhobasis]
                                               Aphanostephus skirrobasis var. kidderi
                                                     [Aphanostephus kidderi]
                                     Aphantochaeta
                                     Aplopappus
                                     Arctanthemum
                                             Arctanthemum arcticum
                                               Arctanthemum arcticum subsp. arcticum
                                                     [Chrysanthemum arcticum subsp. arcticum]
                                                     [Chrysanthemum arcticum]
                                                     [Dendranthema arcticum subsp. arcticum]
                                                     [Dendranthema arcticum]
                                                     [Leucanthemum arcticum]
                                               Arctanthemum arcticum subsp. polare
                                                     [Chrysanthemum arcticum subsp. polare]
                                                     [Chrysanthemum arcticum var. polare]
                                                     [Dendranthema arcticum subsp. polare]
                                                     [Dendranthema hultenii]
                                             Arctanthemum integrifolium
                                                   [Chrysanthemum integrifolium]
                                                   [Hulteniella integrifolia]
                                                   [Leucanthemum integrifolium]
                                     Arctium
                                             Arctium lappa
                                                   [Lappa major]
                                             Arctium minus
                                                   [Lappa minor]
                                             Arctium nemorosum
                                                   [Arctium minus subsp. nemorosum]
                                             Arctium tomentosum
                                             Arctium vulgare
                                                   [Arctium minus subsp. nemorosum]
                                     Arctotheca
                                             Arctotheca calendula
                                     Arctotis
                                             Arctotis fastuosa
                                                   [Venidium fastuosum]
                                             Arctotis stoechadifolia
                                                   [Arctotis grandis]
                                                   [Arctotis stoechadifolia var. grandis]
                                     Arctous
                                     Arcyphyllum
                                     Argyranthemum
                                             Argyranthemum foeniculum
                                                   [Argyranthemum anethifolium]
                                                   [Pyrethrum anethifolium]
                                             Argyranthemum frutescens
                                                   [Chrysanthemum frutescens]
                                               Argyranthemum frutescens subsp. frutescens
                                                     [Chrysanthemum frutescens]
                                             Argyranthemum tenerifae
                                                   [Argyranthemum anethifolium]
                                                   [Pyrethrum anethifolium]
                                     Argyrautia
                                             Argyrautia degeneri
                                     Argyroxiphium
                                             Argyroxiphium caliginis
                                             Argyroxiphium grayanum
                                                   [Wilkesia grayana]
                                             Argyroxiphium kai
                                                   [Argyroxiphium caliginis var. kai]
                                             Argyroxiphium kauense
                                                   [Argyroxiphium sandwicense var. kauense]
                                             Argyroxiphium sandwicense
                                               Argyroxiphium sandwicense subsp. macrocephalum
                                                     [Argyroxiphium macrocephalum]
                                               Argyroxiphium sandwicense subsp. sandwicense
                                             Argyroxiphium virescens
                                                   [Argyroxiphium forbesii]
                                     Arnica
                                             Arnica acaulis
                                                   [Doronicum acaule]
                                             Arnica alpina
                                             Arnica angustifolia
                                               Arnica angustifolia subsp. angustifolia
                                                     [Arnica alpina subsp. angustifolia]
                                                     [Arnica alpina subsp. attenuata]
                                                     [Arnica alpina subsp. sornborgeri]
                                                     [Arnica alpina var. angustifolia]
                                                     [Arnica alpina var. attenuata]
                                                     [Arnica alpina var. linearis]
                                                     [Arnica alpina var. plantaginea]
                                                     [Arnica alpina var. ungavensis]
                                                     [Arnica alpina var. vestita]
                                                     [Arnica angustifolia subsp. attenuata]
                                                     [Arnica plantaginea]
                                                     [Arnica sornborgeri]
                                                     [Arnica terrae-novae]
                                               Arnica angustifolia subsp. tomentosa
                                                     [Arnica alpina subsp. tomentosa]
                                                     [Arnica alpina var. tomentosa]
                                                     [Arnica angustifolia var. tomentosa]
                                                     [Arnica tomentosa]
                                             Arnica cernua
                                                   [Arnica chandleri]
                                             Arnica chamissonis
                                                   [Arnica bernardina]
                                                   [Arnica chamissonis subsp. foliosa]
                                                   [Arnica chamissonis subsp. incana]
                                                   [Arnica chamissonis var. andina]
                                                   [Arnica chamissonis var. bernardina]
                                                   [Arnica chamissonis var. jepsoniana]
                                                   [Arnica chamissonis var. maguirei]
                                                   [Arnica foliosa]
                                               Arnica chamissonis subsp. chamissonis
                                               Arnica chamissonis var. chamissonis
                                                     [Arnica chamissonis subsp. genuina]
                                               Arnica chamissonis var. incana
                                                     [Arnica chamissonis subsp. incana]
                                                     [Arnica foliosa var. incana]
                                               Arnica chamissonis var. interior
                                             Arnica cordifolia
                                                   [Arnica cordifolia subsp. genuina]
                                                   [Arnica cordifolia subsp. whitneyi]
                                                   [Arnica cordifolia var. humilis]
                                                   [Arnica cordifolia var. pumila]
                                                   [Arnica cordifolia var. whitneyi]
                                                   [Arnica hardinae]
                                                   [Arnica humilis]
                                                   [Arnica whitneyi]
                                             Arnica dealbata
                                                   [Whitneya dealbata]
                                             Arnica discoidea
                                                   [Arnica discoidea var. alata]
                                                   [Arnica discoidea var. eradiata]
                                                   [Arnica grayi]
                                                   [Arnica parviflora subsp. alata]
                                                   [Arnica parviflora]
                                             Arnica diversifolia
                                             Arnica fulgens
                                             Arnica gracilis
                                                   [Arnica latifolia var. gracilis]
                                             Arnica griscomii
                                               Arnica griscomii subsp. frigida
                                                     [Arnica frigida subsp. frigida]
                                                     [Arnica frigida]
                                                     [Arnica louiseana subsp. frigida]
                                                     [Arnica louiseana var. frigida]
                                                     [Arnica louiseana var. mendenhallii]
                                                     [Arnica louiseana var. pilosa]
                                               Arnica griscomii subsp. griscomii
                                                     [Arnica frigida subsp. griscomii]
                                                     [Arnica louiseana subsp. griscomii]
                                             Arnica lanceolata
                                                   [Arnica mollis var. petiolaris]
                                               Arnica lanceolata subsp. lanceolata
                                                     [Arnica mollis var. petiolaris]
                                               Arnica lanceolata subsp. prima
                                                     [Arnica amplexicaulis subsp. prima]
                                                     [Arnica amplexicaulis var. piperi]
                                                     [Arnica amplexicaulis var. prima]
                                                     [Arnica amplexicaulis]
                                                     [Arnica mollis var. aspera]
                                             Arnica latifolia
                                                   [Arnica latifolia var. angustifolia]
                                             Arnica lessingii
                                                   [Arnica lessingii subsp. norbergii]
                                             Arnica lonchophylla
                                                   [Arnica alpina subsp. lonchophylla]
                                                   [Arnica alpina var. lonchophylla]
                                                   [Arnica angustifolia subsp. lonchophylla]
                                                   [Arnica arnoglossa]
                                                   [Arnica chionopappa]
                                                   [Arnica gaspensis]
                                                   [Arnica lonchophylla subsp. arnoglossa]
                                                   [Arnica lonchophylla subsp. chionopappa]
                                                   [Arnica lonchophylla var. arnoglossa]
                                               Arnica lonchophylla subsp. lonchophylla
                                                     [Arnica alpina subsp. lonchophylla]
                                                     [Arnica alpina var. lonchophylla]
                                                     [Arnica angustifolia subsp. lonchophylla]
                                                     [Arnica chionopappa]
                                                     [Arnica gaspensis]
                                                     [Arnica lonchophylla subsp. chionopappa]
                                             Arnica longifolia
                                                   [Arnica longifolia subsp. genuina]
                                                   [Arnica longifolia subsp. myriadenia]
                                             Arnica louiseana
                                             Arnica mollis
                                                   [Arnica mollis var. silvatica]
                                             Arnica montana
                                               Arnica montana subsp. montana
                                             Arnica nevadensis
                                                   [Arnica tomentella]
                                             Arnica ovata
                                             Arnica paniculata
                                             Arnica parryi
                                                   [Arnica parryi subsp. sonnei]
                                                   [Arnica parryi var. sonnei]
                                                   [Arnica sonnei]
                                               Arnica parryi subsp. parryi
                                                     [Arnica parryi subsp. genuina]
                                             Arnica rydbergii
                                                   [Arnica cascadensis]
                                             Arnica sororia
                                                   [Arnica fulgens var. sororia]
                                             Arnica spathulata
                                                   [Arnica cusickii]
                                                   [Arnica spathulata subsp. eastwoodiae]
                                                   [Arnica spathulata var. eastwoodiae]
                                             Arnica unalaschcensis
                                             Arnica venosa
                                             Arnica viscosa
                                                   [Chrysopsis shastensis]
                                     Arnoglossum
                                             Arnoglossum album
                                             Arnoglossum atriplicifolium
                                                   [Cacalia atriplicifolia]
                                                   [Cacalia paniculata]
                                                   [Cacalia rotundifolia]
                                                   [Mesadenia atriplicifolia]
                                             Arnoglossum diversifolium
                                                   [Cacalia diversifolia]
                                                   [Mesadenia diversifolia]
                                             Arnoglossum floridanum
                                                   [Cacalia floridana]
                                                   [Mesadenia floridana]
                                             Arnoglossum muehlenbergii
                                                   [Senecio muehlenbergii]
                                             Arnoglossum ovatum
                                                   [Cacalia elliottii]
                                                   [Cacalia lanceolata var. elliottii]
                                                   [Cacalia lanceolata var. virescens]
                                                   [Cacalia lanceolata]
                                                   [Cacalia ovata]
                                                   [Mesadenia elliottii]
                                                   [Mesadenia lanceolata var. virescens]
                                                   [Mesadenia lanceolata]
                                                   [Mesadenia maxima]
                                             Arnoglossum plantagineum
                                                   [Cacalia paniculata]
                                                   [Cacalia plantaginea]
                                                   [Cacalia pteranthes]
                                                   [Cacalia tuberosa]
                                                   [Mesadenia tuberosa]
                                             Arnoglossum reniforme
                                                   [Cacalia muehlenbergii]
                                                   [Cacalia reniformis]
                                                   [Mesadenia reniformis]
                                                   [Senecio muehlenbergii]
                                             Arnoglossum sulcatum
                                                   [Cacalia sulcata]
                                                   [Mesadenia sulcata]
                                     Arnoseris
                                             Arnoseris minima
                                                   [Hyoseris minima]
                                     Artemisia
                                             Artemisia abrotanum
                                                   [Artemisia procera]
                                             Artemisia absinthium
                                                   [Artemisia absinthium var. insipida]
                                             Artemisia albicans
                                                   [Sphaeromeria cana]
                                                   [Tanacetum canum]
                                             Artemisia aleutica
                                             Artemisia annua
                                             Artemisia arbuscula
                                               Artemisia arbuscula subsp. arbuscula
                                                     [Artemisia tridentata subsp. arbuscula]
                                                     [Seriphidium arbusculum]
                                               Artemisia arbuscula subsp. longicaulis
                                               Artemisia arbuscula subsp. longiloba
                                                     [Artemisia arbuscula var. longiloba]
                                                     [Artemisia longiloba]
                                                     [Artemisia spiciformis var. longiloba]
                                                     [Seriphidium arbusculum subsp. longilobum]
                                               Artemisia arbuscula subsp. thermopola
                                             Artemisia australis
                                                   [Artemisia hillebrandii]
                                             Artemisia biennis
                                                   [Artemisia biennis var. diffusa]
                                               Artemisia biennis var. biennis
                                             Artemisia bigelovii
                                             Artemisia californica
                                             Artemisia campestris
                                               Artemisia campestris subsp. borealis
                                                     [Artemisia borealis f. latisecta]
                                                     [Artemisia borealis f. purshii]
                                                     [Artemisia borealis subsp. purshii]
                                                     [Artemisia borealis var. latisecta]
                                                     [Artemisia borealis var. purshii]
                                                     [Artemisia borealis]
                                                     [Artemisia campestris var. purshii]
                                                     [Artemisia purshiana]
                                                     [Artemisia ripicola]
                                                     [Oligosporus groenlandicus]
                                               Artemisia campestris subsp. campestris
                                                     [Oligosporus campestris]
                                               Artemisia campestris subsp. canadensis
                                                     [Artemisia campestris var. canadensis]
                                                     [Artemisia canadensis]
                                               Artemisia campestris subsp. caudata
                                                     [Artemisia campestris var. caudata]
                                                     [Artemisia caudata var. calvens]
                                                     [Artemisia caudata]
                                                     [Artemisia forwoodii]
                                                     [Oligosporus campestris subsp. caudatus]
                                                     [Oligosporus caudatus]
                                               Artemisia campestris subsp. pacifica
                                                     [Artemisia campestris var. pacifica]
                                                     [Artemisia campestris var. petiolata]
                                                     [Artemisia campestris var. scouleriana]
                                                     [Artemisia camporum]
                                                     [Artemisia pacifica]
                                                     [Oligosporus campestris subsp. pacificus]
                                                     [Oligosporus pacificus]
                                               Artemisia campestris subsp. richardsoniana
                                                     [Artemisia arctica subsp. arctica]
                                                     [Artemisia arctica]
                                                     [Artemisia richardsoniana]
                                               Artemisia campestris var. borealis
                                                     [Artemisia borealis subsp. purshii]
                                                     [Artemisia borealis var. latisecta]
                                                     [Artemisia borealis var. purshii]
                                                     [Artemisia borealis]
                                                     [Artemisia campestris var. canadensis]
                                                     [Artemisia campestris var. purshii]
                                                     [Artemisia canadensis]
                                                     [Artemisia richardsoniana]
                                                     [Artemisia spithamea]
                                                     [Oligosporus groenlandicus]
                                               Artemisia campestris var. wormskioldii
                                             Artemisia cana
                                                   [Artemisia cana/ludoviciana]
                                               Artemisia cana subsp. bolanderi
                                                     [Artemisia bolanderi]
                                                     [Artemisia tridentata subsp. bolanderi]
                                                     [Artemisia tridentata var. bolanderi]
                                                     [Seriphidium canum subsp. bolanderi]
                                               Artemisia cana subsp. cana
                                                     [Seriphidium canum]
                                               Artemisia cana subsp. viscidula
                                                     [Artemisia argilosa]
                                                     [Artemisia cana var. viscidula]
                                                     [Seriphidium canum subsp. viscidulum]
                                               Artemisia cana var. cana
                                             Artemisia capitata
                                                   [Tanacetum capitatum]
                                             Artemisia carruthii
                                                   [Artemisia carruthii var. wrightii]
                                                   [Artemisia kansana]
                                             Artemisia constricta
                                                   [Sphaeromeria compacta]
                                                   [Tanacetum compactum]
                                             Artemisia douglasiana
                                                   [Artemisia campestris var. douglasiana]
                                                   [Artemisia vulgaris subsp. heterophylla]
                                                   [Artemisia vulgaris var. douglasiana]
                                             Artemisia dracunculus
                                                   [Artemisia dracunculoides var. dracunculina]
                                                   [Artemisia dracunculoides]
                                                   [Artemisia dracunculus subsp. glauca]
                                                   [Artemisia dracunculus var. glauca]
                                                   [Artemisia glauca var. dracunculina]
                                                   [Oligosporus dracunculus subsp. dracunculinus]
                                                   [Oligosporus dracunculus subsp. glaucus]
                                                   [Oligosporus dracunculus]
                                             Artemisia filifolia
                                             Artemisia franserioides
                                             Artemisia frigida
                                             Artemisia furcata
                                               Artemisia furcata subsp. furcata
                                                     [Artemisia furcata var. heterophylla]
                                                     [Artemisia hyperborea]
                                                     [Artemisia tacomensis]
                                                     [Artemisia trifurcata]
                                               Artemisia furcata var. furcata
                                                     [Artemisia hyperborea]
                                                     [Artemisia tacomensis]
                                                     [Artemisia trifurcata]
                                             Artemisia glauca
                                                   [Artemisia dracunculus subsp. glauca]
                                                   [Oligosporus dracunculus subsp. glaucus]
                                             Artemisia globularia
                                                   [Artemisia flava]
                                                   [Artemisia globularia var. lutea]
                                               Artemisia globularia subsp. lutea
                                                     [Artemisia flava]
                                                     [Artemisia globularia var. lutea]
                                             Artemisia glomerata
                                               Artemisia glomerata var. glomerata
                                               Artemisia glomerata var. subglabrata
                                             Artemisia gmelinii
                                                   [Artemisia sacrorum]
                                             Artemisia inaequifolia
                                                   [Sphaeromeria diversifolia]
                                                   [Tanacetum diversifolium]
                                             Artemisia kauaiensis
                                                   [Artemisia hillebrandii var. kauaiensis]
                                             Artemisia kruhsiana
                                               Artemisia kruhsiana subsp. alaskana
                                                     [Artemisia alaskana]
                                             Artemisia laciniata
                                                   [Artemisia laciniatiformis]
                                               Artemisia laciniata subsp. laciniata
                                                     [Artemisia laciniatiformis]
                                                     [Artemisia macrobotrys]
                                               Artemisia laciniata subsp. parryi
                                                     [Artemisia parryi]
                                             Artemisia longifolia
                                             Artemisia ludoviciana
                                                   [Artemisia cana/ludoviciana]
                                               Artemisia ludoviciana subsp. albula
                                                     [Artemisia albula]
                                                     [Artemisia ludoviciana var. albula]
                                               Artemisia ludoviciana subsp. candicans
                                                     [Artemisia candicans]
                                                     [Artemisia ludoviciana var. latiloba]
                                               Artemisia ludoviciana subsp. estesii
                                               Artemisia ludoviciana subsp. incompta
                                                     [Artemisia incompta]
                                                     [Artemisia ludoviciana var. incompta]
                                                     [Artemisia prescottiana]
                                               Artemisia ludoviciana subsp. lindleyana
                                                     [Artemisia lindleyana]
                                               Artemisia ludoviciana subsp. ludoviciana
                                                     [Artemisia diversifolia]
                                                     [Artemisia gnaphalodes]
                                                     [Artemisia herriotii]
                                                     [Artemisia ludoviciana subsp. typica]
                                                     [Artemisia ludoviciana var. americana]
                                                     [Artemisia ludoviciana var. brittonii]
                                                     [Artemisia ludoviciana var. gnaphalodes]
                                                     [Artemisia ludoviciana var. latifolia]
                                                     [Artemisia ludoviciana var. pabularis]
                                                     [Artemisia pabularis]
                                                     [Artemisia purshiana]
                                                     [Artemisia vulgaris subsp. ludoviciana]
                                                     [Artemisia vulgaris var. ludoviciana]
                                               Artemisia ludoviciana subsp. mexicana
                                                     [Artemisia mexicana]
                                                     [Artemisia neomexicana]
                                                     [Artemisia vulgaris var. mexicana]
                                               Artemisia ludoviciana subsp. redolens
                                                     [Artemisia ludoviciana var. redolens]
                                                     [Artemisia redolens]
                                               Artemisia ludoviciana subsp. sulcata
                                                     [Artemisia sulcata]
                                               Artemisia ludoviciana var. mexicana
                                             Artemisia mauiensis
                                                   [Artemisia mauiensis var. diffusa]
                                             Artemisia michauxiana
                                                   [Artemisia vulgaris subsp. michauxiana]
                                             Artemisia nesiotica
                                                   [Artemisia californica var. insularis]
                                             Artemisia norvegica
                                               Artemisia norvegica subsp. saxatilis
                                                     [Artemisia arctica subsp. beringensis]
                                                     [Artemisia arctica subsp. comata]
                                                     [Artemisia arctica subsp. saxicola]
                                                     [Artemisia comata]
                                                     [Artemisia norvegica var. comata]
                                                     [Artemisia norvegica var. piceetorum]
                                                     [Artemisia norvegica var. saxatilis]
                                             Artemisia nova
                                                   [Artemisia arbuscula subsp. nova]
                                                   [Artemisia arbuscula var. nova]
                                                   [Artemisia nova var. duchesnicola]
                                                   [Artemisia tridentata subsp. nova]
                                                   [Seriphidium novum]
                                             Artemisia nuttallii
                                                   [Sphaeromeria argentea]
                                                   [Tanacetum nuttallii]
                                             Artemisia opulenta
                                                   [Artemisia vulgaris var. kamtschatica]
                                             Artemisia packardiae
                                             Artemisia palmeri
                                             Artemisia papposa
                                             Artemisia pedatifida
                                             Artemisia pontica
                                             Artemisia porteri
                                             Artemisia potentilloides
                                                   [Sphaeromeria potentilloides var. potentilloides]
                                                   [Sphaeromeria potentilloides]
                                                   [Tanacetum potentilloides]
                                                   [Vesicarpa potentilloides var. potentilloides]
                                                   [Vesicarpa potentilloides]
                                               Artemisia potentilloides var. nitrophila
                                                     [Sphaeromeria potentilloides var. nitrophila]
                                                     [Tanacetum potentilloides var. nitrophilum]
                                             Artemisia pycnocephala
                                             Artemisia pygmaea
                                                   [Seriphidium pygmaeum]
                                             Artemisia rigida
                                                   [Artemisia trifida var. rigida]
                                                   [Seriphidium rigidum]
                                             Artemisia rothrockii
                                                   [Artemisia tridentata subsp. rothrockii]
                                                   [Artemisia tridentata var. rothrockii]
                                                   [Seriphidium rothrockii]
                                             Artemisia ruthiae
                                                   [Sphaeromeria ruthiae]
                                             Artemisia scoparia
                                             Artemisia scopulorum
                                             Artemisia selengensis
                                                   [Artemisia vulgaris var. selengensis]
                                             Artemisia senjavinensis
                                             Artemisia serrata
                                             Artemisia simplex
                                                   [Sphaeromeria simplex]
                                                   [Tanacetum simplex]
                                             Artemisia spiciformis
                                             Artemisia spinescens
                                                   [Picrothamnus desertorum]
                                             Artemisia stelleriana
                                             Artemisia suksdorfii
                                             Artemisia tilesii
                                                   [Artemisia elatior]
                                                   [Artemisia hookeriana]
                                                   [Artemisia tilesii subsp. elatior]
                                                   [Artemisia tilesii subsp. gormanii]
                                                   [Artemisia tilesii subsp. unalaschcensis]
                                                   [Artemisia tilesii var. aleutica]
                                                   [Artemisia tilesii var. elatior]
                                                   [Artemisia tilesii var. unalaschcensis]
                                                   [Artemisia unalaskensis var. aleutica]
                                                   [Artemisia unalaskensis]
                                               Artemisia tilesii subsp. tilesii
                                             Artemisia tridentata
                                               Artemisia tridentata subsp. parishii
                                                     [Artemisia tridentata var. parishii]
                                                     [Seriphidium tridentatum subsp. parishii]
                                               Artemisia tridentata subsp. spiciformis
                                                     [Artemisia tridentata var. spiciformis]
                                               Artemisia tridentata subsp. tridentata
                                                     [Artemisia angusta]
                                                     [Artemisia tridentata subsp. xericensis]
                                                     [Artemisia tridentata var. angustifolia]
                                                     [Seriphidium tridentatum]
                                               Artemisia tridentata subsp. vaseyana
                                                     [Artemisia tridentata var. pauciflora]
                                                     [Artemisia vaseyana]
                                                     [Seriphidium tridentatum subsp. vaseyanum]
                                                     [Seriphidium vaseyanum]
                                               Artemisia tridentata subsp. wyomingensis
                                                     [Artemisia tridentata var. wyomingensis]
                                                     [Seriphidium tridentatum subsp. wyomingense]
                                               Artemisia tridentata var. vaseyana
                                             Artemisia trifida
                                             Artemisia tripartita
                                               Artemisia tripartita subsp. rupicola
                                                     [Artemisia tripartita var. rupicola]
                                               Artemisia tripartita subsp. tripartita
                                                     [Artemisia tridentata subsp. trifida]
                                                     [Seriphidium tripartitum]
                                             Artemisia umbelliformis
                                                   [Artemisia laxa]
                                               Artemisia umbelliformis subsp. umbelliformis
                                                     [Artemisia laxa]
                                             Artemisia vulgaris
                                                   [Artemisia tilesii var. aleutica]
                                                   [Artemisia unalaskensis var. aleutica]
                                                   [Artemisia unalaskensis]
                                                   [Artemisia vulgaris var. coarctata]
                                                   [Artemisia vulgaris var. glabra]
                                                   [Artemisia vulgaris var. kamtschatica]
                                                   [Artemisia vulgaris var. latiloba]
                                                   [Artemisia vulgaris var. selengensis]
                                               Artemisia vulgaris subsp. vulgaris
                                                     [Artemisia heterophylla]
                                                     [Artemisia vulgaris subsp. coarctata]
                                                     [Artemisia vulgaris var. glabra]
                                                     [Artemisia vulgaris var. latiloba]
                                               Artemisia vulgaris var. vulgaris
                                     Asanthus
                                             Asanthus squamulosus
                                                   [Brickellia squamulosa]
                                     Askellia
                                             Askellia elegans
                                                   [Crepis elegans]
                                             Askellia pygmaea
                                                   [Askellia nana subsp. ramosa]
                                                   [Askellia nana]
                                                   [Askellia pygmaea subsp. ramosa]
                                                   [Crepis nana subsp. clivicola]
                                                   [Crepis nana subsp. nana]
                                                   [Crepis nana subsp. ramosa]
                                                   [Crepis nana var. lyratifolia]
                                                   [Crepis nana var. ramosa]
                                                   [Crepis nana]
                                     Aster
                                             Aster alpinus
                                               Aster alpinus var. serpentimontanus
                                               Aster alpinus var. vierhapperi
                                                     [Aster alpinus subsp. vierhapperi]
                                                     [Diplactis alpina subsp. vierhapperi]
                                             Aster andersonii
                                             Aster ascendens
                                             Aster asteroides
                                             Aster diffusus
                                             Aster indicus
                                                   [Kalimeris indica]
                                             Aster lucidulus
                                             Aster neoelegans
                                                   [Aster elegans]
                                             Aster ovatus
                                             Aster pinnatifidus
                                             Aster tataricus
                                                   [Aster conspicuus]
                                             Aster unalaschkensis
                                     Asterandra
                                     Astranthium
                                             Astranthium ciliatum
                                                   [Astranthium integrifolium subsp. ciliatum]
                                                   [Astranthium integrifolium var. ciliatum]
                                             Astranthium integrifolium
                                               Astranthium integrifolium subsp. integrifolium
                                                     [Bellis integrifolia]
                                             Astranthium robustum
                                                   [Astranthium integrifolium var. robustum]
                                     Atrichoseris
                                             Atrichoseris platyphylla
                                                   [Malacothrix platyphylla]
                                     Ayapana
                                             Ayapana triplinervis
                                     Baccharis
                                             Baccharis angustifolia
                                             Baccharis bigelovii
                                             Baccharis brachyphylla
                                             Baccharis dioica
                                             Baccharis douglasii
                                                   [Baccharis glutinosa]
                                             Baccharis glomeruliflora
                                             Baccharis halimifolia
                                                   [Baccharis halimifolia var. angustior]
                                             Baccharis havardii
                                             Baccharis malibuensis
                                             Baccharis myrsinites
                                             Baccharis neglecta
                                             Baccharis pilularis
                                                   [Baccharis pilularis var. consanguinea]
                                               Baccharis pilularis subsp. consanguinea
                                                     [Baccharis pilularis var. consanguinea]
                                             Baccharis plummerae
                                               Baccharis plummerae subsp. glabrata
                                               Baccharis plummerae subsp. plummerae
                                             Baccharis pteronioides
                                             Baccharis salicifolia
                                                   [Baccharis glutinosa]
                                                   [Baccharis viminea]
                                                   [Molina salicifolia]
                                               Baccharis salicifolia subsp. salicifolia
                                                     [Baccharis viminea]
                                                     [Molina salicifolia]
                                             Baccharis salicina
                                                   [Baccharis emoryi]
                                             Baccharis sarothroides
                                             Baccharis sergiloides
                                             Baccharis texana
                                                   [Linosyris texana]
                                             Baccharis thesioides
                                             Baccharis vanessae
                                             Baccharis wrightii
                                     Bahia
                                     Bahiopsis
                                             Bahiopsis deltoidea
                                                   [Viguiera deltoidea]
                                             Bahiopsis laciniata
                                                   [Viguiera laciniata]
                                             Bahiopsis parishii
                                                   [Viguiera deltoidea var. parishii]
                                                   [Viguiera parishii]
                                             Bahiopsis reticulata
                                                   [Viguiera reticulata]
                                     Baileya
                                             Baileya multiradiata
                                                   [Baileya multiradiata var. thurberi]
                                             Baileya pauciradiata
                                             Baileya pleniradiata
                                                   [Baileya multiradiata var. pleniradiata]
                                                   [Baileya perennis]
                                     Balduina
                                             Balduina angustifolia
                                                   [Actinospermum angustifolium]
                                             Balduina atropurpurea
                                                   [Endorima atropurpurea]
                                             Balduina uniflora
                                                   [Endorima uniflora]
                                     Balsamorhiza
                                             Balsamorhiza bonseri
                                             Balsamorhiza careyana
                                               Balsamorhiza careyana var. careyana
                                               Balsamorhiza careyana var. intermedia
                                             Balsamorhiza deltoidea
                                             Balsamorhiza hispidula
                                                   [Balsamorhiza hookeri var. hispidula]
                                             Balsamorhiza hookeri
                                               Balsamorhiza hookeri var. hirsuta
                                                     [Balsamorhiza hirsuta]
                                               Balsamorhiza hookeri var. hookeri
                                               Balsamorhiza hookeri var. idahoensis
                                                     [Balsamorhiza macrophylla var. idahoensis]
                                               Balsamorhiza hookeri var. lagocephala
                                                     [Balsamorhiza hirsuta var. lagocephala]
                                               Balsamorhiza hookeri var. neglecta
                                                     [Balsamorhiza hirsuta var. neglecta]
                                             Balsamorhiza incana
                                             Balsamorhiza lanata
                                                   [Balsamorhiza hookeri var. lanata]
                                             Balsamorhiza macrolepis
                                               Balsamorhiza macrolepis var. macrolepis
                                               Balsamorhiza macrolepis var. platylepis
                                                     [Balsamorhiza hookeri var. platylepis]
                                                     [Balsamorhiza platylepis]
                                             Balsamorhiza macrophylla
                                             Balsamorhiza rosea
                                             Balsamorhiza sagittata
                                             Balsamorhiza sericea
                                             Balsamorhiza serrata
                                             Balsamorhiza terebinthacea
                                             Balsamorhiza tomentosa
                                     Baltimora
                                             Baltimora recta
                                     Barkleyanthus
                                             Barkleyanthus salicifolius
                                                   [Cineraria salicifolia]
                                                   [Senecio salignus]
                                     Bartlettia
                                             Bartlettia scaposa
                                     Bebbia
                                             Bebbia juncea
                                               Bebbia juncea var. aspera
                                     Bellis
                                             Bellis perennis
                                                   [Bellis integrifolia]
                                     Benitoa
                                             Benitoa occidentalis
                                                   [Lessingia occidentalis]
                                     Bensonia
                                     Berkheya
                                             Berkheya heterophylla
                                     Berlandiera
                                             Berlandiera betonicifolia
                                                   [Berlandiera pumila var. scabrella]
                                                   [Berlandiera texana var. betonicifolia]
                                             Berlandiera humilis
                                             Berlandiera lyrata
                                                   [Berlandiera incisa]
                                                   [Berlandiera lyrata var. macrophylla]
                                             Berlandiera macrophylla
                                                   [Berlandiera lyrata var. macrophylla]
                                             Berlandiera pumila
                                                   [Berlandiera dealbata]
                                                   [Berlandiera tomentosa var. dealbata]
                                                   [Berlandiera tomentosa]
                                               Berlandiera pumila var. pumila
                                                     [Berlandiera dealbata]
                                                     [Berlandiera tomentosa var. dealbata]
                                                     [Berlandiera tomentosa]
                                             Berlandiera subacaulis
                                             Berlandiera texana
                                     Berylsimpsonia
                                             Berylsimpsonia vanillosma
                                                   [Proustia krugiana]
                                                   [Proustia vanillosma]
                                     Bidens
                                             Bidens alba
                                               Bidens alba var. radiata
                                                     [Bidens pilosa var. radiata]
                                             Bidens amplectens
                                                   [Bidens gracilis]
                                                   [Bidens halawana]
                                             Bidens andicola
                                             Bidens aristosa
                                                   [Bidens aristosa var. fritcheyi]
                                                   [Bidens aristosa var. mutica]
                                                   [Bidens aristosa var. retrorsa]
                                                   [Bidens involucrata]
                                                   [Bidens polylepis var. retrorsa]
                                             Bidens asymmetrica
                                                   [Bidens gracilis]
                                                   [Bidens halawana]
                                             Bidens aurea
                                                   [Bidens aurea var. wrightii]
                                                   [Bidens ferulifolia]
                                                   [Bidens heterophylla]
                                                   [Coreopsis aurea]
                                                   [Coreopsis ferulifolia]
                                             Bidens beckii
                                                   [Megalodonta beckii var. beckii]
                                                   [Megalodonta beckii var. hendersonii]
                                                   [Megalodonta beckii var. oregonensis]
                                                   [Megalodonta beckii]
                                             Bidens bidentoides
                                                   [Bidens bidentoides var. mariana]
                                                   [Bidens mariana]
                                             Bidens bigelovii
                                               Bidens bigelovii var. angustiloba
                                               Bidens bigelovii var. bigelovii
                                             Bidens bipinnata
                                                   [Bidens bipinnata var. biternatoides]
                                             Bidens campylotheca
                                               Bidens campylotheca subsp. campylotheca
                                                     [Bidens magnidisca]
                                               Bidens campylotheca subsp. pentamera
                                                     [Bidens campylotheca var. pentamera]
                                                     [Bidens pentamera]
                                               Bidens campylotheca subsp. waihoiensis
                                             Bidens cernua
                                                   [Bidens cernua var. dentata]
                                                   [Bidens cernua var. elliptica]
                                                   [Bidens cernua var. integra]
                                                   [Bidens cernua var. minima]
                                                   [Bidens cernua var. oligodonta]
                                                   [Bidens cernua var. radiata]
                                                   [Bidens glaucescens]
                                               Bidens cernua var. cernua
                                             Bidens cervicata
                                                   [Bidens asplenioides]
                                                   [Bidens fecunda]
                                                   [Bidens ferax]
                                                   [Bidens stokesii]
                                             Bidens conjuncta
                                             Bidens connata
                                                   [Bidens connata var. ambiversa]
                                                   [Bidens connata var. anomala]
                                                   [Bidens connata var. fallax]
                                                   [Bidens connata var. gracilipes]
                                                   [Bidens connata var. inundata]
                                                   [Bidens connata var. petiolata]
                                                   [Bidens connata var. pinnata]
                                                   [Bidens connata var. submutica]
                                             Bidens coronata
                                                   [Bidens coronata var. brachyodonta]
                                                   [Bidens coronata var. tenuiloba]
                                                   [Bidens coronata var. trichosperma]
                                             Bidens cosmoides
                                                   [Bidens cosmoides var. refracta]
                                                   [Bidens dimidiata]
                                             Bidens cynapiifolia
                                                   [Bidens bipinnata var. cynapiifolia]
                                                   [Bidens cynapiifolia var. portoricensis]
                                                   [Bidens cynapiifolia var. tenuis]
                                             Bidens discoidea
                                             Bidens eatonii
                                                   [Bidens eatonii var. fallax]
                                                   [Bidens eatonii var. illicita]
                                                   [Bidens eatonii var. interstes]
                                                   [Bidens eatonii var. kennebecensis]
                                                   [Bidens eatonii var. major]
                                                   [Bidens eatonii var. mutabilis]
                                                   [Bidens eatonii var. simulans]
                                             Bidens forbesii
                                               Bidens forbesii subsp. forbesii
                                                     [Bidens asymmetrica var. subocculata]
                                                     [Bidens napaliensis]
                                               Bidens forbesii subsp. kahiliensis
                                             Bidens frondosa
                                                   [Bidens frondosa var. anomala]
                                                   [Bidens frondosa var. caudata]
                                                   [Bidens frondosa var. pallida]
                                                   [Bidens frondosa var. stenodonta]
                                             Bidens gardneri
                                             Bidens hawaiensis
                                                   [Bidens skottsbergii var. conglutinata]
                                                   [Bidens skottsbergii var. pololuensis]
                                                   [Bidens skottsbergii]
                                             Bidens heterodoxa
                                                   [Bidens heterodoxa var. agnostica]
                                                   [Bidens heterodoxa var. atheistica]
                                                   [Bidens heterodoxa var. monardifolia]
                                                   [Bidens heterodoxa var. orthodoxa]
                                                   [Bidens infirma]
                                                   [Bidens tripartita var. heterodoxa]
                                             Bidens heterosperma
                                             Bidens hillebrandiana
                                               Bidens hillebrandiana subsp. hillebrandiana
                                               Bidens hillebrandiana subsp. polycephala
                                             Bidens hyperborea
                                                   [Bidens hyperborea var. cathancensis]
                                                   [Bidens hyperborea var. colpophila]
                                                   [Bidens hyperborea var. svensonii]
                                               Bidens hyperborea var. hyperborea
                                                     [Bidens hyperborea var. colpophila]
                                                     [Bidens hyperborea var. laurentiana]
                                             Bidens laevis
                                                   [Bidens elegans]
                                                   [Bidens nashii]
                                                   [Helianthus laevis]
                                             Bidens lemmonii
                                             Bidens leptocephala
                                             Bidens macrocarpa
                                                   [Bidens macrocarpa var. ovatifolia]
                                             Bidens mauiensis
                                                   [Bidens awaluana]
                                                   [Bidens mauiensis var. ciliata]
                                                   [Bidens mauiensis var. cuneatoides]
                                                   [Bidens mauiensis var. forbesiana]
                                                   [Bidens mauiensis var. lanaiensis]
                                                   [Bidens mauiensis var. media]
                                             Bidens menziesii
                                               Bidens menziesii subsp. filiformis
                                                     [Bidens menziesii var. filiformis]
                                                     [Bidens menziesii var. leptondontia]
                                               Bidens menziesii subsp. menziesii
                                                     [Bidens menziesii var. lepida]
                                                     [Bidens salicoides]
                                             Bidens micrantha
                                               Bidens micrantha subsp. ctenophylla
                                                     [Bidens ctenophylla]
                                               Bidens micrantha subsp. kalealaha
                                                     [Bidens distans]
                                                     [Bidens micrantha var. rudimentifera]
                                               Bidens micrantha subsp. micrantha
                                                     [Bidens ctenophylla]
                                                     [Bidens degeneri var. apioides]
                                                     [Bidens degeneri]
                                                     [Bidens micrantha var. caduca]
                                                     [Bidens micrantha var. kaalana]
                                                     [Bidens micrantha var. laciniata]
                                                     [Bidens perversa var. aquilonalis]
                                                     [Bidens perversa]
                                                     [Bidens sandvicensis var. caduca]
                                                     [Bidens sandvicensis var. leiocarpa]
                                             Bidens mitis
                                                   [Bidens mitis var. leptophylla]
                                             Bidens molokaiensis
                                                   [Bidens cuneata]
                                             Bidens multiceps
                                             Bidens pilosa
                                                   [Bidens odorata]
                                                   [Bidens pilosa var. bimucronata]
                                               Bidens pilosa var. minor
                                               Bidens pilosa var. pilosa
                                             Bidens polylepis
                                                   [Bidens aristosa var. retrorsa]
                                                   [Bidens involucrata]
                                                   [Bidens polylepis var. retrorsa]
                                             Bidens populifolia
                                             Bidens reptans
                                                   [Bidens reptans var. urbanii]
                                                   [Bidens urbanii]
                                                   [Coreopsis reptans]
                                               Bidens reptans var. reptans
                                                     [Coreopsis reptans]
                                             Bidens sandvicensis
                                               Bidens sandvicensis subsp. confusa
                                               Bidens sandvicensis subsp. sandvicensis
                                                     [Bidens coartata]
                                                     [Bidens graciloides]
                                                     [Bidens micranthoides]
                                                     [Bidens obtusiloba]
                                                     [Bidens pulchella]
                                                     [Bidens sandvicensis var. antrorsa]
                                                     [Bidens sandvicensis var. imminuta]
                                                     [Bidens sandvicensis var. setosa]
                                                     [Bidens waimeana]
                                             Bidens sandwicensis
                                               Bidens sandwicensis subsp. sandwicensis
                                                     [Bidens graciloides]
                                                     [Bidens obtusiloba]
                                                     [Bidens pulchella]
                                                     [Bidens sandvicensis var. antrorsa]
                                                     [Bidens sandvicensis var. imminuta]
                                                     [Bidens sandvicensis var. setosa]
                                                     [Bidens waimeana]
                                             Bidens tenuisecta
                                             Bidens torta
                                                   [Bidens fulvescens]
                                                   [Bidens micrantha var. kaalana]
                                                   [Bidens waianensis]
                                             Bidens trichosperma
                                                   [Bidens coronata var. brachyodonta]
                                                   [Bidens coronata var. tenuiloba]
                                                   [Bidens coronata var. trichosperma]
                                             Bidens tripartita
                                                   [Bidens acuta]
                                                   [Bidens comosa]
                                               Bidens tripartita subsp. comosa
                                                     [Bidens comosa]
                                               Bidens tripartita subsp. tripartita
                                                     [Bidens acuta]
                                             Bidens valida
                                             Bidens vulgata
                                                   [Bidens frondosa var. puberula]
                                                   [Bidens puberula]
                                                   [Bidens vulgata var. puberula]
                                                   [Bidens vulgata var. schizantha]
                                             Bidens wiebkei
                                                   [Bidens nematocera]
                                     Bigelowia
                                             Bigelowia nudata
                                                   [Bigelowia virgata]
                                                   [Chondrophora nudata]
                                                   [Chondrophora virgata]
                                                   [Chrysocoma nudata]
                                               Bigelowia nudata subsp. nudata
                                                     [Bigelowia virgata]
                                                     [Chondrophora nudata]
                                                     [Chondrophora virgata]
                                                     [Chrysocoma nudata]
                                               Bigelowia nudata var. australis
                                                     [Bigelowia nudata subsp. australis]
                                             Bigelowia nuttallii
                                     Blainvillea
                                             Blainvillea acmella
                                                   [Verbesina lavenia]
                                     Blennosperma
                                             Blennosperma bakeri
                                             Blennosperma nanum
                                               Blennosperma nanum var. nanum
                                               Blennosperma nanum var. robustum
                                     Blepharipappus
                                             Blepharipappus scaber
                                                   [Blepharipappus scaber subsp. laevis]
                                               Blepharipappus scaber subsp. scaber
                                     Blepharizonia
                                             Blepharizonia laxa
                                                   [Blepharizonia plumosa subsp. viscida]
                                             Blepharizonia plumosa
                                               Blepharizonia plumosa subsp. plumosa
                                     Blumea
                                             Blumea bifoliata
                                                   [Conyza bifoliata]
                                             Blumea sessiliflora
                                             Blumea sinuata
                                                   [Blumea laciniata]
                                             Blumea viscosa
                                                   [Conyza lyrata]
                                                   [Conyza viscosa]
                                                   [Eschenbachia lyrata]
                                     Boltonia
                                             Boltonia apalachicolensis
                                             Boltonia asteroides
                                                   [Boltonia asteroides var. glastifolia]
                                               Boltonia asteroides var. asteroides
                                                     [Boltonia asteroides var. glastifolia]
                                               Boltonia asteroides var. latisquama
                                                     [Boltonia latisquama]
                                               Boltonia asteroides var. recognita
                                                     [Boltonia latisquama var. microcephala]
                                                     [Boltonia latisquama var. occidentalis]
                                                     [Boltonia latisquama var. recognita]
                                                     [Boltonia recognita]
                                             Boltonia caroliniana
                                                   [Boltonia ravenelii]
                                             Boltonia decurrens
                                                   [Boltonia asteroides var. decurrens]
                                                   [Boltonia latisquama var. decurrens]
                                             Boltonia diffusa
                                               Boltonia diffusa var. diffusa
                                               Boltonia diffusa var. interior
                                                     [Boltonia interior]
                                             Boltonia montana
                                     Bombycilaena
                                             Bombycilaena californica
                                                   [Micropus californicus var. californicus]
                                                   [Micropus californicus var. subvestitus]
                                                   [Micropus californicus]
                                               Bombycilaena californica var. californica
                                     Borrichia
                                             Borrichia arborescens
                                                   [Buphthalmum arborescens]
                                             Borrichia cubana
                                             Borrichia frutescens
                                     Bracteantha
                                     Bracyrhamphus
                                     Bradburia
                                             Bradburia hirtella
                                                   [Chrysopsis texana]
                                             Bradburia pilosa
                                                   [Chrysopsis nuttallii]
                                                   [Chrysopsis pilosa]
                                                   [Heterotheca pilosa]
                                     Bradburya
                                     Bramia
                                     Brickellia
                                             Brickellia amplexicaulis
                                                   [Brickellia amplexicaulis var. lanceolata]
                                               Brickellia amplexicaulis var. amplexicaulis
                                             Brickellia atractyloides
                                               Brickellia atractyloides var. arguta
                                                     [Brickellia arguta var. arguta]
                                                     [Brickellia arguta]
                                               Brickellia atractyloides var. odontolepis
                                                     [Brickellia arguta var. odontolepis]
                                             Brickellia baccharidea
                                             Brickellia betonicifolia
                                             Brickellia brachyphylla
                                               Brickellia brachyphylla var. brachyphylla
                                             Brickellia californica
                                                   [Brickellia californica var. jepsonii]
                                                   [Bulbostylis californica]
                                               Brickellia californica var. californica
                                                     [Bulbostylis californica]
                                             Brickellia chenopodina
                                             Brickellia cordifolia
                                                   [Coleosanthus cordifolius]
                                             Brickellia coulteri
                                             Brickellia cylindracea
                                             Brickellia dentata
                                             Brickellia desertorum
                                                   [Brickellia californica var. desertorum]
                                                   [Coleosanthus desertorum]
                                             Brickellia diffusa
                                                   [Eupatorium aromaticum]
                                             Brickellia eupatorioides
                                                   [Kuhnia eupatorioides var. angustifolia]
                                                   [Kuhnia eupatorioides var. pyramidalis]
                                                   [Kuhnia eupatorioides]
                                                   [Kuhnia glutinosa]
                                                   [Kuhnia hitchcockii]
                                               Brickellia eupatorioides var. chlorolepis
                                                     [Brickellia chlorolepis]
                                                     [Brickellia leptophylla var. mexicana]
                                                     [Brickellia rosemarinifolia var. chlorolepis]
                                                     [Brickellia rosmarinifolia subsp. chlorolepis]
                                                     [Brickellia rosmarinifolia]
                                                     [Brickellia shaffneri]
                                                     [Kuhnia chlorolepis]
                                                     [Kuhnia eupatorioides var. chlorolepis]
                                                     [Kuhnia leptophylla var. mexicana]
                                                     [Kuhnia leptophylla]
                                                     [Kuhnia microphylla]
                                                     [Kuhnia rosemarinifolia var. chlorolepis]
                                                     [Kuhnia rosmarinifolia var. chlorolepis]
                                                     [Kuhnia rosmarinifolia]
                                                     [Kuhnia shaffneri]
                                               Brickellia eupatorioides var. corymbulosa
                                                     [Kuhnia eupatorioides var. corymbulosa]
                                                     [Kuhnia hitchcockii]
                                               Brickellia eupatorioides var. eupatorioides
                                                     [Brickellia rosemarinifolia]
                                                     [Brickellia rosmarinifolia]
                                                     [Kuhnia eupatorioides var. angustifolia]
                                                     [Kuhnia eupatorioides var. gracilis]
                                                     [Kuhnia eupatorioides var. pyramidalis]
                                                     [Kuhnia eupatorioides]
                                                     [Kuhnia glutinosa]
                                                     [Kuhnia rosemarinifolia]
                                                     [Kuhnia rosmarinifolia]
                                               Brickellia eupatorioides var. floridana
                                                     [Brickellia mosieri]
                                                     [Kuhnia eupatorioides var. floridana]
                                                     [Kuhnia eupatorioides var. gracilis]
                                                     [Kuhnia mosieri]
                                               Brickellia eupatorioides var. gracillima
                                                     [Brickellia leptophylla]
                                                     [Kuhnia eupatorioides var. gracillima]
                                                     [Kuhnia leptophylla]
                                               Brickellia eupatorioides var. texana
                                                     [Brickellia eupatorioides var. ozarkana]
                                                     [Kuhnia eupatorioides var. ozarkana]
                                                     [Kuhnia eupatorioides var. texana]
                                             Brickellia floribunda
                                             Brickellia frutescens
                                             Brickellia grandiflora
                                                   [Brickellia grandiflora var. petiolaris]
                                                   [Coleosanthus grandiflorus]
                                             Brickellia greenei
                                             Brickellia hinckleyi
                                                   [Brickellia brachyphylla var. hinckleyi]
                                               Brickellia hinckleyi var. hinckleyi
                                                     [Brickellia brachyphylla var. hinckleyi]
                                               Brickellia hinckleyi var. terlinguensis
                                                     [Brickellia brachyphylla var. terlinguensis]
                                             Brickellia incana
                                             Brickellia knappiana
                                             Brickellia laciniata
                                             Brickellia lemmonii
                                                   [Brickellia lemmonii var. wootonii]
                                               Brickellia lemmonii var. conduplicata
                                                     [Brickellia conduplicata]
                                                     [Brickellia viejensis]
                                               Brickellia lemmonii var. lemmonii
                                                     [Brickellia viejensis]
                                               Brickellia lemmonii var. nelsonii
                                             Brickellia longifolia
                                               Brickellia longifolia var. longifolia
                                               Brickellia longifolia var. multiflora
                                                     [Brickellia multiflora]
                                             Brickellia microphylla
                                                   [Brickellia microphylla var. watsonii]
                                                   [Brickellia watsonii]
                                               Brickellia microphylla var. microphylla
                                               Brickellia microphylla var. scabra
                                                     [Brickellia microphylla subsp. scabra]
                                                     [Brickellia scabra]
                                             Brickellia nevinii
                                             Brickellia oblongifolia
                                               Brickellia oblongifolia var. linifolia
                                                     [Brickellia linifolia]
                                               Brickellia oblongifolia var. oblongifolia
                                                     [Brickellia oblongifolia var. typica]
                                             Brickellia parvula
                                             Brickellia pringlei
                                             Brickellia rusbyi
                                             Brickellia simplex
                                             Brickellia venosa
                                                   [Coleosanthus venosus]
                                             Brickellia veronicifolia
                                                   [Brickellia veronicifolia var. petrophila]
                                                   [Eupatorium veronicifolium]
                                               Brickellia veronicifolia var. veronicifolia
                                                     [Eupatorium veronicifolium]
                                     Brickelliastrum
                                             Brickelliastrum fendleri
                                                   [Brickellia fendleri]
                                                   [Eriocarpum wootonii]
                                                   [Eupatorium fendleri]
                                     Brintonia
                                             Brintonia discoidea
                                                   [Solidago discoidea]
                                     Buphthalmum
                                     Cacaliopsis
                                             Cacaliopsis nardosmia
                                                   [Cacalia nardosmia var. glabrata]
                                                   [Cacalia nardosmia]
                                                   [Cacaliopsis nardosmia var. glabrata]
                                                   [Luina nardosmia subsp. glabrata]
                                                   [Luina nardosmia var. glabrata]
                                                   [Luina nardosmia]
                                     Cacara
                                     Caconapea
                                     Calea
                                     Calendula
                                             Calendula arvensis
                                             Calendula officinalis
                                                   [Calendula officinalis var. prolifera]
                                     Callistephus
                                             Callistephus chinensis
                                                   [Aster chinensis]
                                     Calotis
                                             Calotis cuneifolia
                                     Calycadenia
                                             Calycadenia fremontii
                                                   [Calycadenia ciliosa]
                                                   [Calycadenia elegans]
                                                   [Calycadenia pauciflora var. elegans]
                                                   [Hemizonia fremontii]
                                                   [Hemizonia multiglandulosa var. sparsa]
                                             Calycadenia hooveri
                                             Calycadenia micrantha
                                             Calycadenia mollis
                                                   [Hemizonia mollis]
                                             Calycadenia multiglandulosa
                                                   [Calycadenia campestris]
                                                   [Calycadenia hispida subsp. reducta]
                                                   [Calycadenia hispida]
                                                   [Calycadenia multiglandulosa subsp. bicolor]
                                                   [Calycadenia multiglandulosa subsp. cephalotes]
                                                   [Calycadenia multiglandulosa subsp. robusta]
                                                   [Hemizonia hispida]
                                             Calycadenia oppositifolia
                                                   [Hemizonia oppositifolia]
                                             Calycadenia pauciflora
                                                   [Calycadenia elegans]
                                                   [Calycadenia pauciflora var. elegans]
                                                   [Calycadenia ramulosa]
                                                   [Hemizonia pauciflora]
                                             Calycadenia spicata
                                                   [Hemizonia spicata]
                                             Calycadenia truncata
                                                   [Calycadenia scabrella]
                                                   [Calycadenia truncata subsp. microcephala]
                                                   [Calycadenia truncata subsp. scabrella]
                                                   [Calycadenia truncata var. scabrella]
                                                   [Hemizonia scabrella]
                                                   [Hemizonia truncata]
                                                   [Lagophylla scabrella]
                                               Calycadenia truncata subsp. truncata
                                                     [Hemizonia truncata]
                                             Calycadenia villosa
                                                   [Hemizonia douglasii]
                                     Calycoseris
                                             Calycoseris parryi
                                             Calycoseris wrightii
                                     Calyptocarpus
                                             Calyptocarpus vialis
                                                   [Synedrella vialis]
                                     Calyptracordia
                                     Canadanthus
                                             Canadanthus modestus
                                                   [Aster major]
                                                   [Aster modestus]
                                                   [Aster unalaschkensis var. major]
                                                   [Weberaster modestus]
                                     Carduus
                                             Carduus acanthoides
                                             Carduus crispus
                                             Carduus macrocephalus
                                                   [Carduus nutans var. macrocephalus]
                                             Carduus nutans
                                                   [Carduus macrolepis]
                                                   [Carduus nutans subsp. macrolepis]
                                                   [Carduus nutans var. leiophyllus]
                                                   [Carduus nutans var. macrocephalus]
                                                   [Carduus nutans var. vestitus]
                                               Carduus nutans subsp. leiophyllus
                                               Carduus nutans subsp. macrocephalus
                                               Carduus nutans subsp. nutans
                                                     [Carduus macrolepis]
                                                     [Carduus nutans subsp. macrolepis]
                                                     [Carduus nutans var. vestitus]
                                             Carduus orthocephalus
                                             Carduus pumilus
                                             Carduus pycnocephalus
                                             Carduus tenuiflorus
                                     Carlina
                                             Carlina vulgaris
                                               Carlina vulgaris subsp. vulgaris
                                                     [Carlina vulgaris subsp. longifolia]
                                     Carlquistia
                                             Carlquistia muirii
                                                   [Raillardella muirii]
                                                   [Raillardiopsis muirii]
                                     Carminatia
                                             Carminatia tenuiflora
                                     Carphephorus
                                             Carphephorus bellidifolius
                                             Carphephorus carnosus
                                                   [Litrisa carnosa]
                                             Carphephorus corymbosus
                                             Carphephorus odoratissimus
                                                   [Trilisa odoratissima]
                                             Carphephorus paniculatus
                                                   [Trilisa paniculata]
                                             Carphephorus pseudoliatris
                                             Carphephorus tomentosus
                                                   [Carphephorus tomentosus var. walteri]
                                     Carphochaete
                                             Carphochaete bigelovii
                                     Carthamus
                                             Carthamus creticus
                                                   [Carthamus baeticus]
                                                   [Carthamus lanatus subsp. baeticus]
                                                   [Carthamus lanatus subsp. creticus]
                                             Carthamus lanatus
                                               Carthamus lanatus subsp. lanatus
                                             Carthamus leucocaulos
                                             Carthamus oxyacanthus
                                                   [Carthamus oxyacantha]
                                             Carthamus tinctorius
                                     Castalis
                                     Catananche
                                             Catananche caerulea
                                     Centaurea
                                             Centaurea aspera
                                             Centaurea austriaca
                                             Centaurea babylonica
                                             Centaurea benedicta
                                                   [Cnicus benedictus]
                                             Centaurea bovina
                                             Centaurea calcitrapa
                                             Centaurea calcitrapoides
                                             Centaurea cineraria
                                             Centaurea cyanus
                                                   [Leucacantha cyanus]
                                             Centaurea debeauxii
                                               Centaurea debeauxii subsp. grandiflora
                                                     [Centaurea debeauxii subsp. thuillieri]
                                             Centaurea depressa
                                             Centaurea diffusa
                                                   [Acosta diffusa]
                                             Centaurea diluta
                                             Centaurea eriophora
                                                   [Jacea pratensis]
                                             Centaurea iberica
                                             Centaurea jacea
                                               Centaurea jacea subsp. jacea
                                                     [Centaurea pratensis]
                                                     [Jacea pratensis]
                                             Centaurea macrocephala
                                             Centaurea melitensis
                                             Centaurea moncktonii
                                             Centaurea montana
                                                   [Centaurea montana var. alba]
                                             Centaurea nervosa
                                               Centaurea nervosa subsp. nervosa
                                                     [Centaurea uniflora subsp. nervosa]
                                             Centaurea nigra
                                                   [Centaurea nigra var. radiata]
                                               Centaurea nigra subsp. endressii
                                                     [Centaurea nigra var. radiata]
                                             Centaurea nigrescens
                                                   [Centaurea debeauxii subsp. thuillieri]
                                                   [Centaurea dubia subsp. vochinensis]
                                                   [Centaurea pratensis]
                                                   [Centaurea vochinensis]
                                               Centaurea nigrescens subsp. transalpina
                                                     [Centaurea dubia]
                                                     [Centaurea transalpina]
                                               Centaurea nigrescens subsp. vochinensis
                                                     [Centaurea dubia subsp. vochinensis]
                                                     [Centaurea vochinensis]
                                             Centaurea paniculata
                                             Centaurea phrygia
                                             Centaurea pouzinii
                                             Centaurea pullata
                                               Centaurea pullata subsp. pullata
                                             Centaurea reichenbachii
                                                   [Centaurea biebersteinii]
                                             Centaurea scabiosa
                                                   [Centaurea scabiosa var. vertesensis]
                                             Centaurea solstitialis
                                                   [Leucantha solstitialis]
                                               Centaurea solstitialis subsp. solstitialis
                                                     [Leucantha solstitialis]
                                             Centaurea stoebe
                                               Centaurea stoebe subsp. australis
                                                     [Centaurea stoebe subsp. micranthos]
                                               Centaurea stoebe subsp. stoebe
                                                     [Centaurea maculosa]
                                             Centaurea sulphurea
                                             Centaurea trichocephala
                                             Centaurea triumfettii
                                             Centaurea uniflora
                                             Centaurea variegata
                                             Centaurea virgata
                                               Centaurea virgata subsp. squarrosa
                                                     [Centaurea squarrosa]
                                                     [Centaurea virgata var. squarrosa]
                                     Centaurella
                                     Centipeda
                                             Centipeda minima
                                                   [Artemisia minima]
                                               Centipeda minima subsp. minima
                                                     [Artemisia minima]
                                     Centratherum
                                             Centratherum punctatum
                                     Centrogenium
                                     Centromadia
                                             Centromadia fitchii
                                                   [Hemizonia fitchii]
                                             Centromadia parryi
                                               Centromadia parryi subsp. australis
                                                     [Hemizonia australis]
                                                     [Hemizonia parryi subsp. australis]
                                               Centromadia parryi subsp. congdonii
                                                     [Hemizonia parryi subsp. congdonii]
                                               Centromadia parryi subsp. parryi
                                                     [Hemizonia parryi subsp. parryi]
                                                     [Hemizonia parryi]
                                               Centromadia parryi subsp. rudis
                                                     [Hemizonia parryi subsp. rudis]
                                             Centromadia pungens
                                               Centromadia pungens subsp. laevis
                                                     [Hemizonia laevis]
                                                     [Hemizonia pungens subsp. laevis]
                                               Centromadia pungens subsp. pungens
                                                     [Centromadia pungens subsp. maritima]
                                                     [Centromadia pungens subsp. septentrionalis]
                                                     [Hemizonia pungens subsp. maritima]
                                                     [Hemizonia pungens subsp. pungens]
                                                     [Hemizonia pungens subsp. septentrionalis]
                                                     [Hemizonia pungens var. septentrionalis]
                                                     [Hemizonia pungens]
                                     Chaenactis
                                             Chaenactis alpigena
                                             Chaenactis artemisiifolia
                                             Chaenactis carphoclinia
                                                   [Chaenactis carphoclinia var. attenuata]
                                               Chaenactis carphoclinia var. carphoclinia
                                                     [Chaenactis carphoclinia var. attenuata]
                                               Chaenactis carphoclinia var. peirsonii
                                             Chaenactis cusickii
                                             Chaenactis douglasii
                                                   [Chaenactis angustifolia]
                                                   [Chaenactis brachiata]
                                                   [Chaenactis douglasii var. achilleifolia]
                                                   [Chaenactis douglasii var. glandulosa]
                                                   [Chaenactis douglasii var. montana]
                                                   [Chaenactis douglasii var. nana]
                                                   [Chaenactis douglasii var. rubricaulis]
                                                   [Chaenactis humilis]
                                                   [Chaenactis ramosa]
                                                   [Chaenactis rubricaulis]
                                                   [Chaenactis suksdorfii]
                                                   [Hymenopappus carolinensis]
                                               Chaenactis douglasii var. alpina
                                                     [Chaenactis alpina var. leucopsis]
                                                     [Chaenactis alpina var. rubella]
                                                     [Chaenactis alpina]
                                                     [Chaenactis leucopsis]
                                                     [Chaenactis minuscula]
                                               Chaenactis douglasii var. douglasii
                                                     [Chaenactis angustifolia]
                                                     [Chaenactis brachiata var. stansburiana]
                                                     [Chaenactis brachiata]
                                                     [Chaenactis cineria]
                                                     [Chaenactis douglasii var. achilleifolia]
                                                     [Chaenactis douglasii var. glandulosa]
                                                     [Chaenactis douglasii var. montana]
                                                     [Chaenactis douglasii var. nana]
                                                     [Chaenactis douglasii var. rubricaulis]
                                                     [Chaenactis douglasii var. typicus]
                                                     [Chaenactis humilis]
                                                     [Chaenactis panamintensis]
                                                     [Chaenactis ramosa]
                                                     [Chaenactis rubricaulis]
                                                     [Chaenactis suksdorfii]
                                             Chaenactis evermannii
                                                   [Chaenactis nevadensis var. mainsiana]
                                             Chaenactis fremontii
                                             Chaenactis glabriuscula
                                                   [Chaenactis glabriuscula var. aurea]
                                                   [Chaenactis glabriuscula var. curta]
                                                   [Chaenactis glabriuscula var. tenuifolia]
                                                   [Chaenactis tenuifolia]
                                               Chaenactis glabriuscula var. glabriuscula
                                                     [Chaenactis furcata]
                                                     [Chaenactis glabriuscula var. aurea]
                                                     [Chaenactis glabriuscula var. curta]
                                                     [Chaenactis glabriuscula var. tenuifolia]
                                                     [Chaenactis tenuifolia]
                                               Chaenactis glabriuscula var. heterocarpha
                                                     [Chaenactis glabriuscula var. gracilenta]
                                                     [Chaenactis heterocarpha]
                                                     [Chaenactis tanacetifolia var. gracilenta]
                                                     [Chaenactis tanacetifolia]
                                               Chaenactis glabriuscula var. lanosa
                                                     [Chaenactis glabriuscula var. denudata]
                                                     [Chaenactis lanosa]
                                               Chaenactis glabriuscula var. megacephala
                                               Chaenactis glabriuscula var. orcuttiana
                                                     [Chaenactis orcuttiana]
                                                     [Chaenactis tenuifolia var. orcuttiana]
                                             Chaenactis macrantha
                                             Chaenactis nevadensis
                                             Chaenactis nevii
                                             Chaenactis parishii
                                             Chaenactis santolinoides
                                                   [Chaenactis santolinoides var. indurata]
                                             Chaenactis stevioides
                                                   [Chaenactis furcata]
                                                   [Chaenactis gillespiei]
                                                   [Chaenactis latifolia]
                                                   [Chaenactis mexicana]
                                                   [Chaenactis stevioides var. brachypappa]
                                                   [Chaenactis stevioides var. thornberi]
                                             Chaenactis suffrutescens
                                                   [Chaenactis suffrutescens var. incana]
                                             Chaenactis thompsonii
                                             Chaenactis xantiana
                                     Chaetadelpha
                                             Chaetadelpha wheeleri
                                     Chaetochloa
                                     Chaetopappa
                                             Chaetopappa asteroides
                                               Chaetopappa asteroides var. asteroides
                                               Chaetopappa asteroides var. grandis
                                             Chaetopappa bellidifolia
                                                   [Keerlia bellidifolia]
                                             Chaetopappa bellioides
                                                   [Chaetopappa bellioides var. hirticaulis]
                                                   [Diplostelma bellioides]
                                             Chaetopappa effusa
                                                   [Keerlia effusa]
                                             Chaetopappa ericoides
                                                   [Aster arenosus]
                                                   [Aster ericaefolius]
                                                   [Aster hirtifolius]
                                                   [Aster leucelene]
                                                   [Inula ericoides]
                                                   [Leucelene ericoides]
                                             Chaetopappa hersheyi
                                             Chaetopappa imberbis
                                                   [Chaetopappa asteroides var. imberbis]
                                             Chaetopappa parryi
                                     Chaetotropis
                                     Chamaechaenactis
                                             Chamaechaenactis scaposa
                                                   [Chaenactis scaposa]
                                                   [Chamaechaenactis scaposa var. parva]
                                               Chamaechaenactis scaposa var. scaposa
                                                     [Chaenactis scaposa]
                                     Chamaecistus
                                     Chamaemelum
                                             Chamaemelum fuscatum
                                                   [Anthemis fuscata]
                                             Chamaemelum nobile
                                                   [Anthemis nobilis]
                                     Chamaenerion
                                             Chamaenerion angustifolium
                                     Chamaepericlymenum
                                     Chamaephoenix
                                     Chaptalia
                                             Chaptalia albicans
                                             Chaptalia dentata
                                             Chaptalia nutans
                                                   [Tussilago nutans]
                                             Chaptalia texana
                                                   [Chaptalia nutans var. texana]
                                             Chaptalia tomentosa
                                     Chloracantha
                                             Chloracantha spinosa
                                                   [Aster spinosus]
                                                   [Erigeron ortegae]
                                                   [Leucosyris spinosa]
                                               Chloracantha spinosa var. spinosa
                                     Chondrilla
                                             Chondrilla juncea
                                     Chondrophora
                                     Chondrophylla
                                     Chondrosea
                                     Chondrosum
                                     Choretis
                                     Chorisiva
                                     Chromolaena
                                             Chromolaena bigelovii
                                                   [Eupatorium bigelovii]
                                             Chromolaena borinquensis
                                                   [Eupatorium borinquense]
                                                   [Osmia borinquensis]
                                             Chromolaena corymbosa
                                                   [Eupatorium corymbosum]
                                                   [Osmia corymbosa]
                                             Chromolaena frustrata
                                                   [Eupatorium frustratum]
                                                   [Osmia frustrata]
                                             Chromolaena geraniifolia
                                                   [Eupatorium geraniifolium]
                                                   [Osmia geraniifolia]
                                             Chromolaena ivifolia
                                                   [Eupatorium ivifolium]
                                                   [Osmia ivifolia]
                                             Chromolaena odorata
                                                   [Eupatorium odoratum]
                                                   [Osmia odorata]
                                             Chromolaena oteroi
                                                   [Eupatorium oteroi]
                                             Chromolaena sinuata
                                                   [Eupatorium sinuatum]
                                                   [Osmia sinuata]
                                     Chrosperma
                                     Chrysactinia
                                             Chrysactinia mexicana
                                     Chrysalidocarpus
                                     Chrysamphora
                                     Chrysanthemum
                                             Chrysanthemum morifolium
                                                   [Dendranthema grandiflorum]
                                                   [Dendranthema morifolium]
                                             Chrysanthemum nipponicum
                                             Chrysanthemum parthenium
                                             Chrysanthemum vulgare
                                     Chrysocoma
                                     Chrysogonum
                                             Chrysogonum virginianum
                                                   [Chrysogonum virginianum var. dentatum]
                                               Chrysogonum virginianum var. australe
                                                     [Chrysogonum australe]
                                               Chrysogonum virginianum var. brevistolon
                                               Chrysogonum virginianum var. virginianum
                                                     [Chrysogonum virginianum var. dentatum]
                                     Chrysoma
                                             Chrysoma pauciflosculosa
                                                   [Chrysoma solidaginoides]
                                                   [Solidago pauciflosculosa]
                                     Chrysopsis
                                             Chrysopsis floridana
                                                   [Chrysopsis mariana var. floridana]
                                                   [Heterotheca floridana]
                                                   [Heterotheca mariana subsp. floridana]
                                             Chrysopsis godfreyi
                                             Chrysopsis gossypina
                                               Chrysopsis gossypina subsp. cruiseana
                                                     [Chrysopsis cruiseana]
                                                     [Heterotheca cruiseana]
                                               Chrysopsis gossypina subsp. gossypina
                                                     [Chrysopsis arenicola]
                                                     [Chrysopsis decumbens]
                                                     [Chrysopsis longii]
                                                     [Chrysopsis trichophylla]
                                                     [Heterotheca gossypina]
                                                     [Heterotheca trichophylla]
                                                     [Inula gossypina]
                                               Chrysopsis gossypina subsp. hyssopifolia
                                                     [Chrysopsis gigantea]
                                                     [Chrysopsis hyssopifolia]
                                                     [Chrysopsis mixta]
                                                     [Heterotheca hyssopifolia var. gigantea]
                                             Chrysopsis lanuginosa
                                             Chrysopsis latisquamea
                                                   [Heterotheca latisquamea]
                                             Chrysopsis linearifolia
                                               Chrysopsis linearifolia subsp. linearifolia
                                               Chrysopsis linearifolia var. dressii
                                                     [Chrysopsis linearifolia subsp. dressii]
                                             Chrysopsis mariana
                                                   [Chrysopsis mariana var. macradenia]
                                                   [Heterotheca mariana var. macradenia]
                                                   [Heterotheca mariana]
                                                   [Inula mariana]
                                             Chrysopsis scabrella
                                             Chrysopsis subulata
                                                   [Heterotheca hyssopifolia var. subulata]
                                                   [Heterotheca subulata]
                                             Chrysopsis villosa
                                                   [Chrysopsis villosa/Symphyotrichum ericoides]
                                     Chrysothamnus
                                             Chrysothamnus depressus
                                                   [Ericameria depressa]
                                             Chrysothamnus eremobius
                                                   [Ericameria eremobia]
                                             Chrysothamnus greenei
                                                   [Chrysothamnus greenei subsp. filifolius]
                                                   [Chrysothamnus greenei var. filifolius]
                                                   [Ericameria filifolia]
                                             Chrysothamnus humilis
                                                   [Chrysothamnus viscidiflorus subsp. humilis]
                                                   [Chrysothamnus viscidiflorus var. humilis]
                                                   [Ericameria humilis]
                                             Chrysothamnus molestus
                                                   [Chrysothamnus viscidiflorus var. molestus]
                                                   [Ericameria molesta]
                                             Chrysothamnus scopulorum
                                                   [Haplopappus scopulorum var. hirtellus]
                                                   [Hesperodoria scopulorum]
                                             Chrysothamnus stylosus
                                                   [Grindelia stylosa]
                                                   [Vanclevea stylosa]
                                             Chrysothamnus vaseyi
                                                   [Bigelovia vaseyi]
                                                   [Ericameria vaseyi]
                                             Chrysothamnus viscidiflorus
                                               Chrysothamnus viscidiflorus subsp. axillaris
                                                     [Chrysothamnus axillaris]
                                                     [Ericameria viscidiflora subsp. axillaris]
                                               Chrysothamnus viscidiflorus subsp. lanceolatus
                                                     [Chrysothamnus viscidiflorus subsp. elegans]
                                                     [Chrysothamnus viscidiflorus var. elegans]
                                                     [Chrysothamnus viscidiflorus var. lanceolatus]
                                                     [Ericameria viscidiflora subsp. lanceolata]
                                               Chrysothamnus viscidiflorus subsp. planifolius
                                                     [Ericameria viscidiflora subsp. planifolia]
                                               Chrysothamnus viscidiflorus subsp. puberulus
                                                     [Chrysothamnus viscidiflorus var. puberulus]
                                                     [Ericameria viscidiflora subsp. puberula]
                                               Chrysothamnus viscidiflorus subsp. viscidiflorus
                                                     [Chrysothamnus viscidiflorus subsp. latifolius]
                                                     [Chrysothamnus viscidiflorus subsp. pumilus]
                                                     [Chrysothamnus viscidiflorus subsp. stenophyllus]
                                                     [Chrysothamnus viscidiflorus var. latifolius]
                                                     [Chrysothamnus viscidiflorus var. pumilus]
                                                     [Chrysothamnus viscidiflorus var. stenophyllus]
                                                     [Ericameria viscidiflora var. latifolia]
                                                     [Ericameria viscidiflora var. stenophylla]
                                                     [Ericameria viscidiflora]
                                               Chrysothamnus viscidiflorus var. viscidiflorus
                                                     [Chrysothamnus viscidiflorus subsp. pumilus]
                                                     [Chrysothamnus viscidiflorus subsp. typicus]
                                                     [Chrysothamnus viscidiflorus var. pumilus]
                                                     [Chrysothamnus viscidiflorus var. typicus]
                                                     [Ericameria viscidiflora]
                                     Cicerbita
                                             Cicerbita alpina
                                                   [Lactuca spicata]
                                     Cichorium
                                             Cichorium endivia
                                             Cichorium intybus
                                                   [Cichorium intybus var. foliosum]
                                                   [Cichorium intybus var. sativum]
                                     Cineraria
                                     Cirsium
                                             Cirsium acaule
                                             Cirsium altissimum
                                                   [Carduus altissimus]
                                                   [Cirsium altissimum var. biltmoreanum]
                                             Cirsium andersonii
                                             Cirsium andrewsii
                                                   [Cnicus amplifolius]
                                             Cirsium arizonicum
                                                   [Cirsium arizonicum var. nidulum]
                                                   [Cirsium nidulum]
                                                   [Cnicus arizonicus]
                                               Cirsium arizonicum var. arizonicum
                                               Cirsium arizonicum var. bipinnatum
                                                     [Carduus pulchellus]
                                                     [Cirsium bipinnatum]
                                                     [Cirsium calcareum var. bipinnatum]
                                                     [Cirsium calcareum var. pulchellum]
                                                     [Cirsium calcareum]
                                                     [Cirsium diffusum]
                                                     [Cirsium pulchellum subsp. bipinnatum]
                                                     [Cirsium pulchellum subsp. diffusum]
                                                     [Cirsium pulchellum var. glabrescens]
                                                     [Cirsium pulchellum]
                                                     [Cnicus calcareus]
                                               Cirsium arizonicum var. chellyense
                                                     [Cirsium chellyense]
                                                     [Cirsium chuskaense]
                                                     [Cirsium navajoense]
                                               Cirsium arizonicum var. rothrockii
                                                     [Cirsium rothrockii]
                                             Cirsium arvense
                                                   [Breea arvensis]
                                                   [Breea incana]
                                                   [Carduus arvensis]
                                                   [Cirsium arvense var. argenteum]
                                                   [Cirsium arvense var. horridum]
                                                   [Cirsium arvense var. mite]
                                                   [Cirsium incanum]
                                                   [Cirsium setosum]
                                                   [Serratula arvensis]
                                               Cirsium arvense var. integrifolium
                                                     [Cirsium arvense var. mite]
                                                     [Cirsium setosum]
                                               Cirsium arvense var. vestitum
                                                     [Cirsium arvense var. argenteum]
                                                     [Cirsium incanum]
                                             Cirsium barnebyi
                                             Cirsium botryodes
                                                   [Cirsium griseum]
                                             Cirsium brevifolium
                                                   [Cirsium palousense]
                                             Cirsium brevistylum
                                             Cirsium callilepis
                                             Cirsium canescens
                                                   [Carduus undulatus var. canescens]
                                                   [Cirsium nebraskense]
                                                   [Cirsium nelsonii]
                                                   [Cirsium plattense]
                                             Cirsium canovirens
                                             Cirsium canum
                                             Cirsium carolinianum
                                                   [Carduus carolinianus]
                                                   [Cirsium flaccidum]
                                             Cirsium ciliolatum
                                                   [Cirsium botrys]
                                                   [Cirsium howellii]
                                             Cirsium clavatum
                                               Cirsium clavatum var. americanum
                                                     [Carduus spathulatus]
                                                     [Cirsium centaureae]
                                                     [Cirsium laterifolium]
                                                     [Cirsium modestum]
                                                     [Cirsium scapanolepis]
                                                     [Cirsium spathulifolium]
                                               Cirsium clavatum var. osterhoutii
                                                     [Carduus araneosus]
                                                     [Cirsium araneans]
                                                     [Cirsium osterhoutii]
                                             Cirsium crassicaule
                                             Cirsium cymosum
                                                   [Cirsium botrys]
                                                   [Cirsium triacanthum]
                                             Cirsium discolor
                                                   [Carduus discolor]
                                             Cirsium douglasii
                                                   [Cirsium breweri var. wrangelii]
                                               Cirsium douglasii var. breweri
                                                     [Cirsium breweri var. lanosissimum]
                                                     [Cirsium breweri]
                                                     [Cirsium douglasii var. canescens]
                                                     [Cnicus breweri]
                                               Cirsium douglasii var. douglasii
                                                     [Cirsium breweri var. wrangelii]
                                             Cirsium drummondii
                                                   [Cirsium coccinatum]
                                              &nb