Plantae > Tracheophyta > Magnoliopsida > Asterales > Asteraceae

Asteraceae (aster, daisy, or sunflower)

Wikipedia Abstract

Asteraceae or Compositae (commonly referred to as the aster, daisy, composite, or sunflower family) is an exceedingly large and widespread family of flowering plants (Angiospermae). The family has more than 23,600 currently accepted species, spread across 1,620 genera (list) and 13 subfamilies. In terms of numbers of species, the Asteraceae are rivaled only by the Orchidaceae. (Which of the two families is actually larger is unclear, owing to uncertainty about exactly how many species exist in each family.) Many members have composite flowers in the form of flower heads (capitula or pseudanthia) surrounded by involucral bracts. When viewed from a distance, each capitulum may have the appearance of being a single flower. The name "Asteraceae" comes from the type genus Aster, from the Greek
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Genus

Aaronsohnia (2)
Abrotanella (22)
Acamptopappus (goldenhead) (2)
Acanthocephalus (2)
Acanthocladium (1)
Acanthodesmos (2)
Acanthospermum (starbur) (7)
Acanthostyles (2)
Achillea (yarrow) (185)
Achnophora (1)
Achnopogon (2)
Achyrachaena (blow wives) (1)
Achyrocline (46)   (2)
Achyropappus (3)
Acilepidopsis (1)
Acilepis (37)   (1)
Acmella (spotflower) (33)
Acomis (4)
Acourtia (desertpeony) (81)
Acrisione (2)
Acritopappus (19)
Actinobole (4)
Acunniana (1)
Adelostigma (2)
Adenanthellum (1)
Adenocaulon (trailplant) (5)
Adenoglossa (1)
Adenoon (1)
Adenophyllum (dogweed) (13)
Adenostemma (medicineplant) (21)
Adenostyles (8)
Adenothamnus (1)
Aedesia (3)
Aequatorium (13)   (2)
Aetheolaena (22)   (6)
Aetheorrhiza (1)
Afroaster (18)
Ageratella (1)
Ageratina (snakeroot) (321)   (1)
Ageratinastrum (4)
Ageratum (whiteweed) (36)   (1)
Agnorhiza (5)
Agoseris (agoseris) (12)
Agrianthus (8)
Ainsliaea (50)
Ajania (40)
Ajaniopsis (1)
Akeassia (1)
Alatoseta (1)
Albertinia (1)
Aldama (115)   (1)
Alepidocline (6)
Alfredia (6)
Aliella (4)
Allagopappus (2)
Allardia (9)
Allittia (2)
Allocephalus (1)
Alloispermum (17)
Allopterigeron (1)
Almutaster (alkali marsh aster) (1)
Alomia (4)
Alomiella (2)
Amauria (3)
Ambassa (1)
Amberboa (amberboa) (12)
Amblyocarpum (1)
Amblyolepis (amblyolepis) (1)
Amblyopappus (dwarf coastweed) (1)
Amblysperma (1)
Amboroa (2)
Ambrosia (ragweed) (50)
Ameghinoa (1)
Amellus (12)
Ammobium (3)
Ampelaster (climbing aster) (1)
Amphiachyris (broomweed) (2)
Amphiglossa (10)
Amphipappus (chaffbush) (1)
Amphoricarpos (5)
Anacantha (3)
Anacyclus (anacyclus) (15)
Ananthura (1)
Anaphalioides (8)
Anaphalis (Pearly everlasting) (110)
Anastraphia (33)
Anaxeton (10)
Ancathia (1)
Ancistrocarphus (neststraw) (2)
Anderbergia (6)
Andryala (24)   (1)
Anemocarpa (3)
Angeldiazia (1)
Angianthus (19)
Anisocarpus (2)
Anisochaeta (1)
Anisocoma (anisocoma) (1)
Anisopappus (33)   (1)
Antennaria (pussytoes) (45)
Anteremanthus (1)
Anthemis (chamomile) (164)   (1)
Anticona (1)
Antillanthus (17)
Antillia (1)
Antiphiona (2)
Anvillea (2)
Apalochlamys (1)
Aphanactis (9)   (1)
Aphanostephus (dozedaisy) (5)
Aphelexis (4)
Aphyllocladus (4)
Apodocephala (9)
Apopyros (2)
Aposeris (1)
Apostates (1)
Apowollastonia (8)
Arbelaezaster (1)
Archibaccharis (37)
Archiserratula (1)
Arctanthemum (3)
Arctium (burdock) (50)
Arctogeron (1)
Arctotheca (Capeweed) (5)
Arctotis (arctotis) (65)
Argentipallium (6)
Argyranthemum (dill daisy) (24)   (3)
Argyroglottis (1)
Argyrotegium (4)
Argyroxiphium (silversword) (6)   (1)
Aristeguietia (21)   (1)
Arnaldoa (4)
Arnica (arnica) (32)
Arnicastrum (2)
Arnoglossum (Indian plantain) (9)
Arnoseris (arnoseris) (1)
Arrhenechthites (8)
Arrojadocharis (2)
Arrowsmithia (1)
Artemisia (sagebrush) (361)   (4)
Artemisiella (1)
Artemisiopsis (1)
Asanthus (brickellbush) (3)
Ascidiogyne (2)
Askellia (10)
Aspilia (53)   (1)
Asplundianthus (11)
Astartoseris (1)
Aster (aster) (163)   (1)
Asteridea (9)
Asteriscus (9)   (1)
Asteropsis (2)
Asterothamnus (7)
Astranthium (western daisy) (11)
Athanasia (41)   (1)
Athrixia (15)
Athroisma (12)
Atractylis (26)   (2)
Atractylodes (4)
Atrichantha (1)
Atrichoseris (atrichoseris) (1)
Aucklandia (1)   (1)
Austrobrickellia (3)
Austrocritonia (4)
Austroeupatorium (14)   (1)
Austrosynotis (1)
Axiniphyllum (5)
Ayapana (17)
Ayapanopsis (17)
Aynia (1)
Aztecaster (2)
Baccharis (baccharis) (432)   (2)
Baccharoides (25)   (1)
Badilloa (11)   (1)
Baeriopsis (1)
Bafutia (1)
Bahia (1)
Bahianthus (1)
Bahiopsis (12)
Baileya (desert marigold) (3)
Bajacalia (3)
Balduina (honeycombhead) (3)
Balladonia (2)
Balsamorhiza (balsamroot) (15)
Baltimora (baltimora) (2)
Barkleyanthus (willow ragwort) (1)
Barnadesia (23)   (1)
Barrosoa (11)
Bartlettia (bartlettia) (1)
Bartlettina (bartlettina) (43)   (1)
Basedowia (1)
Batopilasia (1)
Bebbia (sweetbush) (1)
Bechium (3)
Bedfordia (3)
Bejaranoa (2)
Bellida (1)
Bellidiastrum (1)
Bellis (bellis) (14)
Bellium (5)
Belloa (4)
Benitoa (benitoa) (1)
Berardia (1)
Berkheya (berkheya) (78)
Berlandiera (greeneyes) (10)
Berroa (1)
Bertilia (1)
Berylsimpsonia (2)
Bethencourtia (3)
Bidens (beggarticks) (220)   (6)
Bigelowia (rayless goldenrod) (2)
Bishopanthus (1)
Bishopiella (1)
Bishovia (2)
Blainvillea (5)
Blakiella (1)
Blanchetia (2)
Blennosperma (stickyseed) (3)
Blennospora (3)
Blepharipappus (rough eyelash) (1)
Blepharispermum (15)
Blepharizonia (blepharizonia) (2)
Blumea (false oxtongue) (85)
Blumeopsis (1)
Boeberastrum (2)
Boeberoides (1)
Bolandia (5)
Bolanosa (1)
Boltonia (doll's daisy) (6)
Bombycilaena (3)
Borrichia (seaside tansy) (4)
Bothriocline (61)   (3)
Brachanthemum (9)
Brachionostylum (1)
Brachyclados (3)
Brachyglottis (35)
Brachylaena (12)
Brachyscome (95)
Brachythrix (6)
Bracteantha (6)
Bradburia (2)
Brenandendron (3)
Brickellia (brickellbush) (97)
Brickelliastrum (2)
Brintonia (1)
Brocchia (1)
Bryomorphe (1)
Buphthalmum (ox eye) (3)
Burkartia (1)
Caatinganthus (2)
Cabobanthus (2)
Cabreraea (1)
Cabreriella (2)
Cacaliopsis (silvercrown) (1)
Cacosmia (3)
Cadiscus (1)   (1)
Caesulia (1)
Calanticaria (5)
Calea (152)   (1)
Calendula (marigold) (13)
Callicephalus (1)
Callilepis (7)
Callistephus (callistephus) (1)
Calocephalus (16)
Calomeria (4)
Calorezia (2)
Calostephane (6)
Calotesta (1)
Calotis (calotis) (28)
Calycadenia (western rosinweeds) (10)
Calycoseris (tackstem) (2)
Calyptocarpus (calyptocarpus) (3)
Camchaya (9)
Campovassouria (2)
Camptacra (2)
Campuloclinium (16)
Canadanthus (mountain aster) (1)
Cancrinia (6)
Cancriniella (1)
Capelio (3)
Caputia (5)
Cardopatium (2)
Cardosoa (1)
Carduncellus (26)
Carduus (plumeless thistle) (109)   (1)
Carlina (carline thistle) (31)   (1)
Carlquistia (1)
Carminatia (carminatia) (4)
Carpesium (18)
Carphephorus (chaffhead) (7)
Carphochaete (bristlehead) (7)
Carramboa (6)
Carterothamnus (1)
Carthamus (distaff thistles) (16)
Cassinia (51)
Castanedia (1)
Castrilanthemum (1)
Castroviejoa (2)
Catamixis (1)
Catananche (5)
Catatia (2)
Catolesia (2)
Caucasalia (4)
Cavalcantia (2)
Cavea (1)
Caxamarca (2)
Celmearia (1)
Celmisia (celmisia) (79)
Centaurea (knapweed) (760)   (15)   (2)
Centauropsis (8)   (2)
Centaurothamnus (1)
Centipeda (centipeda) (10)
Centratherum (centratherum) (9)
Centromadia (4)
Centropappus (1)
Cephalipterum (1)
Cephalopappus (1)
Cephalosorus (1)
Ceratogyne (1)
Ceruana (1)
Chacoa (1)
Chaenactis (pincushion) (18)
Chaetadelpha (skeletonweed) (1)
Chaetanthera (36)
Chaetopappa (leastdaisy) (11)
Chaetymenia (1)
Chamaechaenactis (chamaechaenactis) (1)
Chamaegeron (4)
Chamaeleon (5)
Chamaemelum (dogfennel) (2)
Chamaepus (1)
Chaptalia (sunbonnetts) (68)
Charadranaetes (1)
Chardinia (2)
Cheirolophus (25)   (8)
Chersodoma (9)
Chevreulia (6)
Chiliadenus (10)
Chiliocephalum (2)
Chiliophyllum (1)
Chiliotrichiopsis (3)
Chiliotrichum (3)
Chimantaea (9)
Chionolaena (21)
Chionopappus (1)
Chlamydophora (1)
Chloracantha (chloracantha) (1)
Chondrilla (chondrilla) (30)
Chondropyxis (1)
Chresta (16)
Chromolaena (thoroughwort) (167)
Chromolepis (1)
Chronopappus (1)
Chrysactinia (chrysactinia) (6)
Chrysactinium (9)
Chrysanthellum (14)
Chrysanthemum (daisy) (42)
Chrysanthoglossum (2)
Chrysocephalum (11)
Chrysocoma (21)
Chrysogonum (chrysogonum) (5)
Chrysolaena (18)
Chrysoma (chrysoma) (1)
Chrysophthalmum (3)
Chrysopsis (goldenaster) (10)
Chrysothamnus (rabbitbrush) (9)
Chthonocephalus (6)
Chucoa (1)
Chuquiraga (23)   (1)
Cicerbita (40)
Ciceronia (1)
Cichorium (chicory) (7)
Cineraria (cineraria) (49)   (1)
Cirsium (thistle) (495)   (4)   (2)
Cissampelopsis (11)
Cladanthus (5)
Cladochaeta (1)
Clappia (clapdaisy) (1)
Clibadium (clibadium) (38)   (2)
Cloiselia (4)
Cnicothamnus (2)
Coespeletia (10)
Coleocoma (1)
Coleostephus (3)
Colobanthera (1)
Cololobus (3)
Columbiadoria (columbiadoria) (1)
Comaclinium (1)
Commidendrum (4)   (3)
Condylidium (villalba) (2)
Condylopodium (6)
Conocliniopsis (1)
Conoclinium (thoroughwort) (4)
Constancea (Nevin's woolly sunflower) (1)
Conyza (horseweed) (48)   (3)
Coreocarpus (coreocarpus) (7)
Coreopsis (tickseed) (89)
Corethamnium (1)
Corethrogyne (sandaster) (1)
Coronidium (21)
Corymbium (9)
Cosmos (cosmos) (35)
Cota (34)
Cotula (waterbuttons) (55)   (1)
Coulterella (1)
Cousinia (693)   (4)
Cousiniopsis (1)
Craspedia (billy buttons) (25)
Crassocephalum (ragleaf) (27)
Crassothonna (13)
Cratystylis (4)
Cremanthodium (72)
Cremnothamnus (1)
Crepidiastrum (22)
Crepis (hawksbeard) (204)   (1)
Crinitaria (4)
Criscia (1)
Criscianthus (1)
Critonia (thoroughwort) (39)
Critoniella (6)
Critoniopsis (68)   (3)
Crocidium (spring-gold) (1)
Crocodylium (3)
Cronquistianthus (23)   (1)
Croptilon (scratchdaisy) (3)
Crossostephium (1)
Crossothamnus (4)   (1)
Crupina (crupina) (3)
Cuatrecasanthus (6)   (1)
Cuatrecasasiella (2)
Cuchumatanea (1)
Culcitium (17)
Cullumia (16)
Cuniculotinus (1)
Curio (21)
Cuspidia (1)
Cyanthillium (ironweed) (11)
Cyathocline (4)
Cyathomone (1)
Cyclachaena (1)
Cyclolepis (1)
Cylindrocline (2)   (1)
Cymbonotus (3)
Cymbopappus (3)
Cymophora (cymophora) (4)
Cynara (cynara) (12)   (1)
Cyrtocymura (6)
Dactyotrichia (1)
Dahlia (dahlia) (38)
Damnamenia (1)
Damnxanthodium (1)
Dasyandantha (1)
Dasyanthina (2)
Dasycondylus (9)
Dasyphyllum (38)
Dauresia (2)
Daveaua (1)
Davilanthus (7)
Decachaeta (9)
Decaneuropsis (12)
Decastylocarpus (1)
Decazesia (1)
Deinandra (22)
Delairea (Cape-ivy) (1)   (1)
Delamerea (1)
Delilia (2)
Delwiensia (1)
Dendrocacalia (1)
Dendrophorbium (77)   (3)
Dendrosenecio (12)   (1)
Dendroviguiera (14)
Denekia (1)
Desmanthodium (8)
Dewildemania (7)
Diacranthera (3)
Diaperia (3)
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Dicoma (37)
Dicomopsis (1)
Dicoria (twinbugs) (2)
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Didelta (2)
Dielitzia (1)
Dieteria (4)
Digitacalia (5)
Dillandia (3)
Dimeresia (dimeresia) (1)
Dimerostemma (30)
Dimorphocoma (1)
Dimorphotheca (Cape marigold) (14)
Dinoseris (1)
Diodontium (1)
Diplostephium (114)   (3)
Dipterocome (1)
Dipterocypsela (1)
Disparago (9)
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Distephanus (45)
Disynaphia (14)
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Doellia (2)
Doellingeria (whitetop) (3)
Dolichoglottis (2)
Dolichorrhiza (4)
Dolichothrix (1)
Doliclasium (1)
Dolomiaea (15)
Doniophyton (2)
Dorobaea (3)
Doronicum (false leopardbane) (38)
Dresslerothamnus (5)
Dubautia (dubautia) (26)   (7)
Dubyaea (13)
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Duhaldea (12)
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Dyssodia (dyssodia) (6)
Eastwoodia (eastwoodia) (1)
Eatonella (white false tickhead) (1)
Echinacea (purple coneflower) (9)
Echinocoryne (6)
Echinops (globethistle) (215)   (1)
Eclipta (eclipta) (8)
Edmondia (3)
Egletes (tropic daisy) (7)   (1)
Eirmocephala (3)
Eitenia (2)
Ekmania (1)
Ekmaniopappus (1)
Elachanthemum (1)
Elachanthus (2)
Elaphandra (14)   (2)
Electranthera (3)
Elekmania (9)
Elephantopus (elephantsfoot) (23)   (1)
Eleutheranthera (eleutheranthera) (2)
Ellenbergia (1)
Elytropappus (8)
Emilia (tasselflower) (115)   (4)
Emiliella (6)
Encelia (brittlebush) (21)
Enceliopsis (sunray) (3)
Endocellion (2)
Endopappus (1)
Engelmannia (Engelmann's daisy) (1)
Engleria (2)
Enydra (swampwort) (6)
Epaltes (7)
Epilasia (3)
Epitriche (1)
Erato (5)
Erechtites (burnweed) (28)
Eremanthus (34)
Eremosis (27)   (1)
Eremothamnus (1)
Eriachaenium (1)
Ericameria (goldenbush) (40)
Ericentrodea (6)
Erigeron (fleabane) (470)   (4)   (2)
Eriocephalus (32)
Eriochlamys (4)
Eriophyllum (woolly sunflower) (13)
Eriotrix (2)
Erlangea (erlangea) (13)
Erodiophyllum (2)
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Erythrocephalum (16)
Erythroseris (2)   (1)
Eschenbachia (7)
Espejoa (1)
Espeletia (Frailejón) (79)
Espeletiopsis (26)
Ethulia (15)   (2)
Eucephalus (aster) (10)
Euchiton (euchiton) (20)
Eumorphia (6)
Eupatoriastrum (7)
Eupatorina (1)
Eupatoriopsis (1)
Eupatorium (thoroughwort) (63)   (1)
Euphrosyne (4)
Eurybia (aster) (28)   (1)
Eurydochus (2)
Euryops (euryops) (99)   (1)
Eutetras (2)
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Guayania (5)
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Jurinea (231)   (5)
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Lamyropsis (6)   (1)
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Launaea (launaea) (56)   (2)
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Lycoseris (11)   (1)
Lygodesmia (skeletonplant) (6)
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Macledium (17)   (1)
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Melampodium (blackfoot) (45)
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Monosis (7)
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Monticalia (75)   (1)
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Msuata (1)
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Neurolaena (neurolaena) (13)
Neurolakis (1)
Nicolasia (7)
Nicolletia (hole-in-the-sand plant) (3)
Nidorella (31)   (3)
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Olearia (daisy bush) (185)   (2)
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Onopordum (cottonthistle) (66)   (1)   (1)
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Oritrophium (24)   (1)
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Pentacalia (162)   (4)
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Pericallis (ragwort) (16)   (2)
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Petrobium (1)   (1)
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Phagnalon (38)   (1)
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Phitosia (1)   (1)
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Phonus (3)
Phyllocephalum (10)   (1)
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Picris (oxtongue) (47)   (1)
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Pilosella (hawkweed) (292)   (1)   (3)
Piloselloides (2)
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Pityopsis (silkgrass) (7)
Pladaroxylon (1)   (1)
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Plazia (4)
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Plectocephalus (9)   (1)   (1)
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Pleiotaxis (34)
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Pluchea (camphorweed) (64)   (1)
Podachaenium (6)
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Podospermum (18)   (4)
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Proustia (proustia) (5)
Psacaliopsis (5)
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Psathyrotes (turtleback) (3)
Psathyrotopsis (3)
Psednotrichia (3)
Psephellus (112)   (15)
Pseudelephantopus (dog's-tongue) (2)
Pseudobaccharis (7)
Pseudobahia (sunburst) (3)
Pseudoblepharispermum (2)
Pseudobrickellia (3)
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Pseudoconyza (1)
Pseudoglossanthis (5)
Pseudognaphalium (cudweeds) (108)
Pseudogynoxys (pseudogynoxys) (16)   (1)
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Psiadia (62)   (1)
Psiadiella (1)
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Psychrogeton (27)
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Pterochaeta (1)
Pteronia (72)
Pterothrix (3)
Pterygopappus (1)
Ptilostemon (19)   (1)
Pulicaria (false fleabane) (87)   (4)
Pulicarioidea (1)
Pycnosorus (6)
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Pyrrocoma (goldenweeds) (14)
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Ratibida (prairie coneflower) (7)
Raulinoreitzia (3)
Rayjacksonia (tansyaster) (3)
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Remya (remya) (3)   (2)
Rensonia (1)
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Rhanteriopsis (4)
Rhanterium (3)
Rhantherium (1)
Rhaponticoides (23)   (2)
Rhaponticum (28)   (1)   (1)
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Rhynchopsidium (2)
Richterago (17)
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Riencourtia (7)
Rigiopappus (rigiopappus) (1)
Robinsonecio (2)
Robinsonia (8)
Rochonia (4)
Roebuckiella (9)
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Rolandra (yerba de plata) (1)
Roldana (groundsel) (62)
Roodebergia (1)
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Rudbeckia (coneflower) (32)
Rugelia (Rugel's Indianplantain) (1)
Ruilopezia (24)
Rumfordia (7)
Russowia (1)
Rutidosis (9)
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Salcedoa (1)
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Sartwellia (glowwort) (4)
Saussurea (saw-wort) (469)
Scabrethia (1)
Scalesia (15)   (5)
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Schizoptera (1)
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Schkuhria (false threadleaf) (2)
Schlagintweitia (3)
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Sclerocarpus (bonebract) (9)
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Sclerorhachis (6)
Scolymus (golden thistle) (3)
Scorzonera (scorzonera) (185)   (3)
Scorzoneroides (22)
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Selloa (5)
Semiria (1)
Senecio (ragworts and groundsels) (1,464)   (6)   (5)
Sericocarpus (whitetop aster) (5)
Seriphidium (113)
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Shangwua (3)
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Siloxerus (4)
Silphium (rosinweed) (13)
Silybum (milkthistle) (2)
Simsia (bushsunflower) (29)
Sinacalia (3)
Sinclairia (29)
Sinosenecio (butterweed) (42)
Smallanthus (smallanthus) (22)
Soaresia (1)
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Solidago (goldenrod) (125)
Soliva (burrweed) (5)
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Sonchella (2)
Sonchus (sowthistle) (103)   (15)
Sondottia (2)
Soroseris (8)
Spaniopappus (5)
Sphaeranthus (38)   (1)
Sphaereupatorium (1)
Sphaeromorphaea (6)
Sphagneticola (creeping-oxeye) (5)   (1)
Spilanthes (spilanthes) (9)
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Stachycephalum (3)
Staehelina (4)
Standleyanthus (1)
Staurochlamys (1)
Steiractinia (14)
Steirodiscus (6)
Stenachaenium (4)
Stenocarpha (2)
Stenocephalum (6)
Stenocline (2)
Stenopadus (15)   (1)
Stenops (2)
Stenotus (mock goldenweed) (4)
Stephanbeckia (1)
Stephanodoria (1)
Stephanomeria (wirelettuce) (17)
Stevia (candyleaf) (269)   (1)
Steviopsis (5)
Steyermarkina (4)
Stifftia (6)
Stilpnogyne (1)
Stilpnolepis (1)
Stilpnopappus (21)
Stizolophus (4)
Stoebe (26)
Stokesia (stokesia) (1)
Stomatanthes (16)
Stomatochaeta (6)
Stramentopappus (2)
Streptoglossa (8)
Strobocalyx (10)
Strotheria (1)
Struchium (1)
Stuartina (2)
Stylocline (neststraw) (8)
Stylotrichium (6)
Symphyllocarpus (1)
Symphyopappus (13)
Symphyotrichum (aster) (104)
Syncalathium (6)
Syncarpha (Everlasting) (28)
Syncephalum (5)
Syncretocarpus (3)
Synedrella (1)
Synedrellopsis (1)
Syneilesis (7)
Synotis (58)
Syntrichopappus (Fremont's gold) (2)
Synurus (3)
Syreitschikovia (2)
Tagetes (marigold) (50)
Taimingasa (3)
Takhtajaniantha (1)
Talamancalia (2)
Talamancaster (6)
Tamananthus (1)
Tamania (1)
Tamaulipa (boneset) (1)
Tanacetopsis (24)
Tanacetum (tansy) (140)   (1)
Taplinia (1)
Taraxacum (dandelion) (2,381)   (1)
Tarchonanthus (6)
Tarlmounia (1)
Tehuana (2)
Teixeiranthus (2)
Telanthophora (11)
Telekia (1)
Telmatophila (1)
Tenrhynea (1)
Tephroseris (groundsel) (47)   (1)
Tessaria (4)
Tetrachyron (10)
Tetradymia (horsebrush) (11)
Tetragonotheca (nerveray) (4)
Tetramolopium (tetramolopium) (38)   (1)
Tetraneuris (bitterweed) (9)
Tetranthus (4)
Tetraperone (1)
Thaminophyllum (3)
Thelesperma (greenthread) (13)
Thespidium (1)
Thespis (3)
Thevenotia (2)
Thiseltonia (2)
Thurovia (triflora rose) (1)
Thymophylla (pricklyleaf) (13)
Thymopsis (2)
Tietkensia (1)
Tilesia (3)
Tithonia (tithonia) (13)   (1)
Toiyabea (1)
Tolpis (umbrella milkwort) (23)   (2)
Tomentaurum (2)
Tonestus (serpentweed) (4)
Tourneuxia (1)
Townsendia (Townsend daisy) (29)
Tracyina (Indian headdress) (1)
Tragopogon (goatsbeard) (128)   (4)
Traversia (1)
Trepadonia (2)
Trichanthemis (6)
Trichanthodium (4)
Trichocline (22)
Trichocoronis (bugheal) (2)
Trichocoryne (1)
Trichogonia (26)
Trichogoniopsis (3)
Trichogyne (8)
Tricholepis (19)
Trichoptilium (yellowhead) (1)
Trichospira (1)
Tridactylina (1)
Tridax (tridax) (34)
Trigonopterum (1)
Trigonospermum (6)
Triniteurybia (1)
Trioncinia (2)
Tripleurospermum (mayweed) (40)   (1)
Triplocephalum (1)
Tripolium (sea aster) (2)   (1)
Triptilion (7)
Triptilodiscus (1)
Trixis (threefold) (44)
Troglophyton (6)
Tuberculocarpus (1)
Tuberostylis (2)
Tugarinovia (1)
Turanecio (12)
Turaniphytum (2)
Turczaninowia (1)
Tussilago (coltsfoot) (1)
Tuxtla (1)
Tyleropappus (1)
Tyrimnus (1)
Tzvelevopyrethrum (3)
Ugamia (1)
Uleophytum (1)
Uniyala (7)
Unxia (2)
Urbinella (1)
Urmenetia (1)
Urolepis (1)
Urospermum (urospermum) (2)
Urostemon (1)
Ursinia (40)
Varilla (varilla) (2)
Varthemia (1)
Vellereophyton (7)
Venegasia (venegasia) (1)
Verbesina (Crownbeard) (348)   (6)
Vernonanthura (77)
Vernonella (11)
Vernonia (ironweed) (339)   (4)
Vernoniastrum (13)
Vernoniopsis (2)
Vieraea (1)
Vigethia (1)
Viguiera (goldeneye) (21)
Villanova (5)
Villasenoria (1)
Vinicia (1)
Vittadinia (22)
Vittetia (2)
Volutaria (16)
Waitzia (8)
Wamalchitamia (7)
Warionia (1)
Wedelia (creeping-oxeyes) (128)   (1)
Welwitschiella (1)
Werneria (23)
Westoniella (6)
Wilkesia (iliau) (2)   (1)
Willemetia (2)
Wollastonia (26)   (4)
Wunderlichia (6)
Wyethia (mule-ears) (10)
Xanthisma (sleepydaisy) (20)
Xanthium (cocklebur) (4)   (1)
Xanthocephalum (xanthocephalum) (5)
Xanthopappus (1)
Xenophyllum (23)   (1)
Xeranthemum (5)
Xerochrysum (6)
Xiphochaeta (1)
Xylanthemum (6)
Xylorhiza (woodyaster) (10)
Yariguianthus (1)
Yermo (desert yellowhead) (1)
Youngia (youngia) (38)
Zaluzania (12)
Zandera (3)
Zemisia (1)
Zexmenia (5)
Zinnia (zinnia) (23)
Zoegea (3)
Zyrphelis (25)
Zyzyura (1)

(...) = Species count
(...) = Endangered count
(...) = Invasive count

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