Enslenia cinerea Spreng. species proparte synonym Podostigma viridis (Walter) Elliott species proparte synonym Anantherix connivens (Baldwin ex Elliott) A.Gray species proparte synonym Asclepias speciosa × Asclepias syriaca species accepted Asclepias curassavica x nivea species doubtful Asclepias zacatecana Mc Vaugh species synonym Asclepias ferruginea Humb. & Bonpl. ex Willd., 1820 species accepted Asclepias jaliscana Rob. species accepted Asclepias parviflora Willd., 1820 species accepted Asclepias parvifolia Willd., 1820 species accepted Asclepias himanthophylla Lindh. species doubtful Asclepias margaritacea Hoffmanns. ex Willd., 1820 species accepted Asclepias cynanchoides Humb. & Bonpl. ex Willd., 1820 species accepted Asclepias clusiifolia Horsf. ex Willd., 1820 species accepted Seutera humilis Benth. species synonym Asclepias matelea Nutt. species synonym Asclepias mellodora subsp. multinervis (E.Fourn.) Bollw. subspecies synonym Asclepias salicifolia G.Lodd. ex J.Forbes species heterotypic synonym Asclepias parvifolia Pursh species homotypic synonym Asclepias affinis DeWild. species synonym Asclepias longifolia Michx. species accepted Acerates delticola Small species synonym Acerates longifolia (Michx.) Elliott species synonym Asclepias quinquedentata A.Gray species accepted Asclepias verticillata L. species accepted Asclepias californica Greene species accepted Asclepias hallii A.Gray species accepted Asclepias michauxii Decne. species accepted Asclepias sperryi Woodson species accepted Asclepias nivea L. species accepted Asclepias curassavica L. species accepted Asclepias nivea var. curassavica (L.) Kuntze variety synonym Asclepias involucrata Engelm. ex Torr. species accepted Asclepias macrosperma Eastw. species synonym Asclepias pedicellata Walter species accepted Podostigma pedicellata (Walter) Vail species synonym Asclepias syriaca L. species accepted Asclepias ×kansana Vail species accepted Asclepias syriaca var. kansana (Vail) E.J.Palmer & Steyerm. variety synonym Asclepias intermedia Vail species synonym Asclepias lanceolata Walter species accepted Asclepias lanceolata var. paupercula (Michx.) Fernald variety synonym Asclepias eriocarpa Benth. species accepted Asclepias fremontii Torr. species synonym Asclepias eriocarpa var. microcarpa Munz & I.M.Johnst. variety synonym Asclepias linearis Scheele species accepted Asclepias quadrifolia Jacq. species accepted Asclepias brachystephana Engelm. ex Torr. species accepted Asclepias meadii Torr. ex A.Gray species accepted Asclepias speciosa Torr. species accepted Asclepias giffordii Eastw. species synonym Asclepias welshii N.H.Holmgren & P.K.Holmgren species accepted Asclepias cryptoceras S.Watson species accepted Asclepias ovalifolia Decne. species accepted Asclepias sullivantii Engelm. ex A.Gray species accepted Asclepias incarnata L. species accepted Asclepias engelmanniana Woodson species accepted Acerates auriculata Engelm. ex Torr. species synonym Asclepias auriculata (Engelm. ex Torr.) Holz. species heterotypic synonym Asclepias linaria Cav. species accepted Asclepias purpurascens L. species accepted Asclepias variegata L. species accepted Biventraria variegata (L.) Small species synonym Asclepias feayi Chapm. ex A.Gray species accepted Asclepiodella feayi (Chapm. ex A.Gray) Small species synonym Asclepias solanoana Woodson species accepted Solanoa purpurascens (A.Gray) Greene species synonym Asclepias viridula Chapm. species accepted Asclepias cordifolia (Benth.) Jeps. species accepted Gomphocarpus cordifolius (Benth.) Benth. ex A.Gray species synonym Asclepias oenotheroides Cham. & Schltdl. species accepted Asclepias brevicornu Scheele species synonym Asclepias subverticillata (A.Gray) Vail species accepted Asclepias galioides Kunth species synonym Asclepias emoryi (Greene) Vail species synonym Asclepias lemmonii A.Gray species accepted Asclepias pumila (A.Gray) Vail species accepted Asclepias uncialis Greene species accepted Asclepias arenaria Torr. species accepted Asclepias fascicularis Decne. species accepted Asclepias mexicana Cav. species accepted Asclepias scaposa Vail species accepted Asclepias viridis Walter species accepted Asclepiodora viridis (Walter) A.Gray species proparte synonym Asclepias connivens Baldw. species doubtful Anantherix connivens (Baldwin ex Elliott) Feay species heterotypic synonym Asclepias hypoleuca (A.Gray) Woodson species accepted Asclepias obovata Elliott species accepted Asclepias viridiflora var. obovata (Elliott) Torr. variety synonym Asclepias subulata Decne. species accepted Asclepias glaucescens Kunth species accepted Asclepias elata Benth. species accepted Asclepias latifolia (Torr.) Raf. species accepted Asclepias tuberosa L. species accepted Asclepias angustifolia Schweig. species accepted Asclepias exaltata L. species accepted Asclepias phytolaccoides G.F.Lyon ex Pursh species synonym Asclepias bicknellii Vail species synonym Asclepias macrotis Torr. species accepted Asclepias rusbyi (Vail) Woodson species accepted Asclepias engelmanniana var. rusbyi (Vail) Kearney variety synonym Asclepias viridiflora Raf. species accepted Asclepias viridiflora var. linearis (A.Gray) Fernald variety synonym Acerates viridiflora (Raf.) Eaton species synonym Asclepias viridiflora var. lanceolata (Ives) Torr. variety synonym Acerates viridiflora var. linearis A.Gray variety synonym Acerates viridiflora var. ivesii Britton variety synonym Asclepias humistrata Walter species accepted Asclepias nyctaginifolia A.Gray species accepted Asclepias stenophylla A.Gray species accepted Acerates angustifolia (Nutt.) Decne. species synonym Polyotus angustifolius Nutt. species synonym Asclepias cutleri Woodson species accepted Asclepias lanuginosa Nutt. species accepted Asclepias otarioides E.Fourn. species accepted Acerates lanuginosa (Nutt.) Decne. species synonym Asclepias prostrata W.H.Blackw. species accepted Asclepias tomentosa Elliott species accepted Asclepias amplexicaulis Sm. species accepted Asclepias erosa Torr. species accepted Asclepias rubra L. species accepted Asclepias laurifolia Michx. species heterotypic synonym Asclepias vestita Hook. & Arn. species accepted Asclepias cinerea Walter species accepted Asclepias hirtella (Pennell) Woodson species accepted Acerates hirtella Pennell species synonym Asclepias longifolia var. hirtella (Pennell) J.Farmer & C.R.Bell variety synonym Asclepias nummularia Torr. species accepted Asclepias curtissii A.Gray species accepted Asclepias aceratoides Nash species heterotypic synonym Asclepias labriformis M.E.Jones species accepted Asclepias perennis Walter species accepted Asclepias texana A.Heller species accepted Asclepias albicans S.Watson species accepted Asclepias truncata Harv. species synonym Asclepias cryptoceras var. davisiae (Woodson) W.H.Baker variety synonym Asclepias nivea subsp. curassavica (Linnaeus) Kuntze subspecies synonym Asclepias nivea (Linnaeus) Kuntze species homotypic synonym Asclepias buchwaldii (Schltr. & K.Schum.) DeWild. species synonym Gomphocarpus marginatus Schltr. species synonym Acerates viridiflora (Raf.) Britton & Brown species synonym Asclepias verticillata var. galioides (Kunth) E.Fourn. variety synonym Asclepias buchwaldii var. angustifolia DeWild. variety synonym Asclepias filiformis Sessé & Moc. species synonym Asclepias davisiae Woodson species synonym Asclepias spec Linnaeus, 1753 species accepted Acerates fructifer Cockerell, 1908 species doubtful Otanema latifolia var. retusa Raf. variety synonym Schizoglossum uollegaense Chiov species synonym Acerates viridiflora var. lanceolata (Torr.) A.Gray variety synonym Acerates vinosa E.Fourn. species synonym Acerates schaffneri (A.Gray) E.Fourn. species synonym Acerates rusbyi Vail species synonym Acerates pringlei Greenm. species synonym Acerates paniculata Decne. species synonym Acerates obovata (Elliott) Eaton species synonym Acerates monocephala Lapham ex A.Gray species doubtful Acerates linearis (A.Gray) Lunell species synonym Acerates lanceolata Steud. species synonym Acerates ivesii Wooton & Standl. species synonym Acerates humilis Benth. species synonym Acerates gomphocarpoides Decne. species heterotypic synonym Acerates feayi (Chapm. ex A.Gray) Chapm. species synonym Acerates cordifolia Benth. species synonym Acerates connivens (Baldwin ex Elliott) Decne. species synonym Acerates circinalis Decne. species synonym Acerates bifida Rusby ex A.Gray species synonym Acerates atropurpurea Kellogg species synonym Xysmalobium viridiflorum (E.Mey.) D.Dietr. species synonym Matelea laevis Nutt. species synonym Stylandra pumila Nutt. species synonym Xysmalobium humile (E.Mey.) D.Dietr. species synonym Xysmalobium crispum (P.J.Bergius) D.Dietr. species synonym Xysmalobium albens (E.Mey.) D.Dietr. species synonym Asclepiodora zanthodacryon L.B.Sm. species synonym Asclepiodora viridis var. angustior A.Gray variety synonym Asclepiodora insignis Brandegee species synonym Asclepiodora circinalis E.Fourn. species synonym Asclepias zanthodacryon (L.B.Sm.) Woodson species accepted Asclepias zacatecana McVaugh species synonym Asclepias wrightii Greene species synonym Asclepias woodsoniana Standl. & Steyerm. species accepted Asclepias woodii (Schltr.) Schltr. species accepted Asclepias weddellii E.Fourn. species synonym Asclepias virletii E.Fourn. species accepted Asclepiodora feayi (Chapm. ex A.Gray) Chapm. species synonym Asclepias virgata Balb. species synonym Asclepias vinosa (E.Fourn.) Woodson species accepted Asclepias villosa Raf., 1808 species accepted Asclepias vicaria N.E.Br. species accepted Gomphocarpus woodii Schltr. species synonym Gomphocarpus viridis (Walter) Spreng. species synonym Gomphocarpus viridiflorus (Raf.) K.Schum. species synonym Asclepias verticillata var. subverticillata A.Gray variety synonym Asclepias verticillata var. pumila A.Gray variety synonym Asclepias verticillata var. mexicana (Cav.) E.Fourn. variety synonym Asclepias verticillata var. linifolia (Kunth) Decne. variety synonym Gomphocarpus velutinus Schltr. species synonym Asclepias verticillata var. linearis (Scheele) Pollard variety synonym Asclepias verticillata var. galioides (Kunth) Decne. variety synonym Gomphocarpus truncatus (E.Mey.) D.Dietr. species heterotypic synonym Asclepias verdickii De Wild. species synonym Asclepias velutina (Schltr.) Schltr. species accepted Asclepias variegata var. minor Hook. variety synonym Asclepias variegata var. major Hook. variety synonym Asclepias vanilla Raf. species synonym Asclepias uncialis subsp. ruthiae (Maguire) Kartesz & Gandhi subspecies synonym Gomphocarpus tanganyikensis (E.A.Bruce) Bullock species synonym Asclepias umbellata Vell. species synonym Asclepias ulophylla Schltr. species accepted Gomphocarpus sphacelatus K.Schum. species synonym Asclepias tuberosus subsp. woodson subspecies synonym Gomphocarpus solstitialis (A.Chev.) Bullock species synonym Gomphocarpus simplex Schltr. species synonym Gomphocarpus schlechteri K.Schum. species synonym Gomphocarpus schizoglossoides Schltr. species synonym Gomphocarpus roseus K.Schum. species synonym Asclepias truncata Willd. species doubtful Gomphocarpus revolutus (E.Mey.) D.Dietr. species synonym Stenostelma eminens (Harv.) Bullock species synonym Asclepias tithymaloides Greene species synonym Gomphocarpus pulchellus Decne. species synonym Gomphocarpus peltigerus (E.Mey.) D.Dietr. species synonym Gomphocarpus palustris K.Schum. species synonym Gomphocarpus palmeri A.Gray species synonym Asclepias tapalpana M.E.Jones species synonym Asclepias tanganyikensis E.A.Bruce species accepted Asclepias syriaca f. polyphylla B.Boivin form synonym Gomphocarpus oxytropis Turcz. species synonym Asclepias syriaca f. leucantha Dore form synonym Asclepias syriaca f. inermis J.R.Churchill form synonym Gomphocarpus navicularis (E.Mey.) D.Dietr. species synonym Gomphocarpus multiflorus Decne. species synonym Gomphocarpus multicaulis (E.Mey.) D.Dietr. species synonym Gomphocarpus meyerianus Schltr. species synonym Gomphocarpus meliodorus Schltr. species synonym Asclepias suffrutex Standl. species synonym Gomphocarpus macropus Schltr. species synonym Asclepias subviridis S.Moore species accepted Stathmostelma verdickii De Wild. species synonym Gomphocarpus longissimus (N.E.Br.) K.Schum. species synonym Gomphocarpus longifolius (Michx.) Schum. species heterotypic synonym Asclepias subaphylla Woodson species accepted Asclepias suaveolens Leconte ex Decne. species heterotypic synonym Otanema latifolia (Torr.) Raf. species synonym Otanema lanceolata (Walter) Raf. species synonym Gomphocarpus kamerunensis (Schltr.) Bullock species synonym Stathmostelma nuttii (N.E.Br.) Bullock species synonym Asclepias stellifera Schltr. species accepted Asclepias standleyi Woodson species accepted Gomphocarpus hypoleucus A.Gray species synonym Asclepias spinosa Vell. species doubtful Gomphocarpus humilis (E.Mey.) Decne. species synonym Asclepias sphacelata (K.Schum.) N.E.Br. species accepted Gomphocarpus hastatus E.Mey. species synonym Stathmostelma crassinerve (N.E.Br.) Bullock species synonym Asclepias solstitialis A.Chev. species accepted Gomphocarpus gibbus (E.Mey.) D.Dietr. species synonym Asclepias sinuosa Burm.fil. species synonym Asclepias singularis Vell. species doubtful Gomphocarpus geminatus Schltr. species synonym Asclepias simpsonii Chapm. species synonym Asclepias simplex (Schltr.) Schltr. species synonym Asclepias similis Hemsl. species accepted Asclepias setosa Benth. species heterotypic synonym Asclepias serpentaria Raf. species synonym Asclepias serica Raf. species synonym Asclepias senecionifolia M.E.Jones species accepted Gomphocarpus fragrans Schltr. species synonym Gomphocarpus foliosus K.Schum. species synonym Gomphocarpus flexuosus (E.Mey. ex Decne.) D.Dietr. species synonym Asclepias selloana E.Fourn. species synonym Gomphocarpus fallax Schltr. species synonym Gomphocarpus expansus (E.Mey.) D.Dietr. species synonym Asclepias schumanniana Hiern species accepted Gomphocarpus eminens Harv. species synonym Asclepias schlechteri (Schum.) N.E.Br. species accepted Gomphocarpus depressus Schltr. species synonym Asclepias scheryi Woodson species accepted Gomphocarpus dependens K.Schum. species synonym Asclepias schaffneri A.Gray species accepted Gomphocarpus cultriformis Harv. ex Schltr. species synonym Gomphocarpus cristatus Decne. species synonym Asclepias scandens Sessé & Moc. species doubtful Gomphocarpus crispus (P.J.Bergius) Aiton species synonym Asclepias sanjuanensis K.D.Heil, J.M.Porter & S.L.Welsh species synonym Asclepias salicifolia Lodd. species doubtful Asclepias sabulosa Schltr. species synonym Asclepias rzedowskii W.D.Stevens species synonym Gomphocarpus concinnus Schltr. species synonym Asclepias ruthiae Maguire species accepted Asclepias rubricaulis Kunth species synonym Asclepias rubra var. laurifolia (Michx.) R.M.Harper variety synonym Gomphocarpus buchwaldii Schltr. & K.Schum. ex K.Schum. species synonym Gomphocarpus brevipes Schltr. species synonym Gomphocarpus brevicuspis (E.Mey.) D.Dietr. species synonym Asclepias rubicunda Schltr. species synonym Asclepias rubella N.E.Br. species synonym Asclepias rotundifolia Raf. species heterotypic synonym Asclepias rothrockii Greene species synonym Gomphocarpus aureus Schltr. species synonym Asclepias rosea Kunth species heterotypic synonym Gomphocarpus asclepiaceus Schltr. species synonym Gomphocarpus arenarius Schltr. species synonym Gomphocarpus angustifolius (Schweigg.) Link species synonym Gomphocarpus amoenus K.Schum. species synonym Gomphocarpus amabilis (N.E.Br.) Bullock species synonym Gomphocarpus albens (E.Mey.) Decne. species synonym Asclepias repanda Sessé & Moc. species heterotypic synonym Gomphocarpus affinis Schltr. species synonym Gomphocarpus adscendens Schltr. species synonym Asclepias rara N.E.Br. species accepted Asclepias randii S.Moore species accepted Asclepias ramosa E.Fourn. species synonym Asclepias rafaelensis Brandegee species synonym Asclepias radiata S.Moore species synonym Asclepias quinqueflora Vell. species doubtful Asclepias quinquedentata var. neomexicana Greene ex A.Gray variety synonym Asclepias quadrifolia var. oppositifolia Raf. variety synonym Asclepias quadrifolia var. lanceolata Decne. variety synonym Asclepias pygmaea N.E.Br. species accepted Asclepias purpusii Brandegee species synonym Asclepias pulchella (Decne.) N.E.Br. species synonym Asclepiodora gomphocarpoides Tourn., 1882 species doubtful Asclepias pubigera Dumort. species synonym Asclepias puberula A.Gray species accepted Asclepias pseudorubricaulis Woodson species accepted Asclepias pseudocrispa Schltr. species synonym Asclepias procumbens Raf. species synonym Asclepias pringlei (Greenm.) Woodson species accepted Asclepias princeps Bartl. species doubtful Asclepias pratensis Benth. species accepted Asclepias praemorsa Schltr. species accepted Asclepias polystachya Walter species synonym Asclepias polyphylla Brandegee species synonym Asclepias plicata Roth species doubtful Asclepias pinifolia Greene species synonym Asclepias pilgeriana Schltr. species accepted Asclepias phenax Woodson species synonym Asclepias periplocifolia Nutt. species synonym Asclepias perennis var. parvula A.Gray variety synonym Asclepias peltigera (E.Mey.) Schltr. species accepted Asclepias pellucida E.Fourn. species accepted Asclepias paupercula Michx. species synonym Asclepias patens N.E.Br. species accepted Asclepias parvula (A.Gray) Vail species synonym Asclepias parviflora var. latifolia Raf. variety synonym Asclepias papillosa Silveira species synonym Asclepias palustris (K.Schum.) Schltr. species accepted Asclepias palmeri Vail species synonym Asclepias pallida E.Fourn. species synonym Asclepias oxytropis (Turcz.) Schltr. species synonym Asclepias ovata M.Martens & Galeotti species accepted Asclepias ovalifolia f. verticillifolia D.Löve & J.-P.Bernard form synonym Podostigma viridis (Walter) Elliott species proparte synonym Podostigma pubescens Elliott species synonym Asclepias oreophila Nicholas ex Hilliard & B.L.Burtt species accepted Podostemma nyctaginifolium (A.Gray) Greene species synonym Podostemma longicornu (Benth.) Greene species synonym Podostemma lindheimeri (Engelm. & A.Gray) Greene species synonym Asclepias obtusifolia Michx. species heterotypic synonym Podostemma leoninum Greene species synonym Asclepias obtusata Greene species synonym Podostemma helleri Greene species synonym Podostemma emoryi Greene species synonym Podostemma australe Greene species synonym Asclepias nuttii N.E.Br. species accepted Asclepias nuttalliana A.Gray species heterotypic synonym Asclepias nummularioides W.D.Stevens species accepted Marsdenia rothii G.Don species synonym Asclepias notha W.D.Stevens species synonym Asclepias nivea var. normalis Kuntze variety synonym Asclepias nivea var. intermedia Schltr. variety synonym Asclepias nivea var. flava Kuntze variety synonym Asclepias nervosa Decne. species synonym Asclepias neglecta Hemsl. species synonym Asclepias navicularis (E.Mey.) Schltr. species accepted Asclepias nana I.Verd. species accepted Asclepias multinervis E.Fourn. species synonym Asclepias multiflora N.E.Br. species accepted Asclepias multicaulis (E.Mey.) Schltr. species heterotypic synonym Asclepias monticola N.E.Br. species accepted Odontostelma welwitschii Rendle species synonym Asclepias montevidensis Spreng. ex E.Fourn. species synonym Odontostelma minus S.Moore species synonym Asclepias modesta N.E.Br. species synonym Asclepias mirifica Woodson species accepted Asclepias minuta A.Chev. species synonym Asclepias meyeriana (Schltr.) Schltr. species accepted Asclepias mellodora var. minor A.St.-Hil. variety synonym Asclepias meliodora (Schltr.) Schltr. species accepted Asclepias melantha Decne. species accepted Asclepias megalotis Raf. species synonym Asclepias mcvaughii Woodson species accepted Asclepias mazatlanensis Sessé & Moc. species synonym Asclepias masonii Woodson species accepted Asclepias marginata var. bodenbenderi Kuntze variety synonym Asclepias margaritacea Hoffmanns. ex Schult. species synonym Asclepias macvaughii Woodson species accepted Asclepias macroura A.Gray species synonym Asclepias macropus (Schltr.) Schltr. species accepted Asclepias macrophylla var. comosa Durand & Hilg. variety synonym Asclepias lynchiana Fishbein species accepted Asclepias longissima N.E.Br. species accepted Asclepias longipetala Scheele species synonym Asclepias longipedunculata Brandegee species synonym Asclepias longicornu Benth. species synonym Asclepias longicornis Kellogg species synonym Asclepias lonchophylla Greene species synonym Asclepias linifolia Kunth species heterotypic synonym Asclepias lindleyi Gillies ex Steud. species synonym Asclepias lindheimeri Engelm. & A.Gray species synonym Asclepias leucophylla var. obtusa A.Gray variety synonym Asclepias leptopus I.M.Johnst. species accepted Asclepias lepida S.Moore species synonym Asclepias laxiflora Perr. ex Colla species heterotypic synonym Asclepias lasiotis Raf. species synonym Asclepias langsdorffii E.Fourn. species accepted Asclepias lancifolia Raf. species heterotypic synonym Asclepias lanceolata f. flaviflora Fernald form synonym Asclepias kuntzei Schltr. species synonym Asclepias kotolo Eastw. species synonym Asclepias klaprothiana Schult. species doubtful Asclepias kamerunensis Schltr. species accepted Asclepias jorgeana Fishbein & S.P.Lynch species accepted Asclepias jangadensis S.Moore species synonym Asclepias jamesii Torr. species synonym Asclepias jaliscana M.E.Jones species heterotypic synonym Asclepias involucrata var. tomentosa Eastw. variety synonym Asclepias insignis (Brandegee) Woodson species heterotypic synonym Asclepias illinoensis Michx. ex Steud. species synonym Asclepias hybrida Michx. species synonym Asclepias humilis (E.Mey.) Schltr. species accepted Asclepias hastata (E.Mey.) Schltr. species synonym Asclepias hassleriana Malme species synonym Asclepias guatemalensis Donn.Sm. species synonym Asclepias greeniana Nutt. ex Loudon, 1850 species accepted Asclepias grayi L.D.Benson species synonym Asclepias grandifolia Bertol. species synonym Asclepias grandiflora E.Fourn. species heterotypic synonym Asclepias graminea Lam. species doubtful Asclepias gossweileri S.Moore species synonym Asclepias gordon-grayae Nicholas species accepted Asclepias gonalis Raf. species synonym Asclepias globosa Stokes species synonym Asclepias glaucescens var. elata (Benth.) E.Fourn. variety synonym Asclepias gladewitzii Farw. species synonym Asclepias glaberrima Sessé & Moc. species heterotypic synonym Asclepias gibba (E.Mey.) Schltr. species accepted Asclepias gentryi Standl. species accepted Otanema ovata Raf. species synonym Asclepias galeottii E.Fourn. species accepted Asclepias fusca Lour. species synonym Asclepias fulva N.E.Br. species accepted Asclepias fragrans Raf. species heterotypic synonym Asclepias fournieri Woodson species accepted Asclepias forskohlei Roem. & Schult., 1820 species accepted Asclepias foliosa (K.Schum.) N.E.Br. species synonym Asclepias flexuosa (E.Mey. ex Decne.) Schltr. species accepted Asclepias flava (Kuntze) Lillo species heterotypic synonym Solanoana purpurascens (A.Gray) Kuntze species synonym Asclepias flanaganii Schltr. species accepted Asclepias fimbriata Weim. species accepted Asclepias fiebrigii Schltr. species synonym Asclepias fasciculata Hemsl. species synonym Asclepias fallax (Schltr.) Schltr. species accepted Asclepias expansa (E.Mey.) Schltr. species accepted Asclepias exilis M.E.Jones species synonym Asclepias euphorbiifolia Engelm. species doubtful Asclepias erosa var. obtusa (A.Gray) A.Gray variety synonym Asclepias endotrachys Schltr. species synonym Asclepias eminens (Harv.) Schltr. species accepted Asclepias elegantula Fishbein species accepted Asclepias elegans Vell. species doubtful Asclepias ecornuta Kellogg ex A.Gray species synonym Asclepias eastwoodiana Barneby species synonym Asclepias dregeana Schltr. species synonym Asclepias douglasii Hook. species synonym Asclepias dissona N.E.Br. species accepted Asclepias disparilis N.E.Br. species accepted Asclepias dilatata Linnaeus ex Jackson species doubtful Asclepias depressa (Schltr.) Schltr. species accepted Asclepias dependens (K.Schum.) N.E.Br. species accepted Asclepias densiflora N.E.Br. species accepted Asclepias densa Jacq. species doubtful Asclepias demissa Greene species synonym Asclepias debilis Michx. species synonym Asclepias dasypus Raf. species synonym Asclepias cutea Raf. species doubtful Asclepias curvipes A.Nelson species synonym Asclepias curupi E.Fourn. species synonym Asclepias curassavica f. kentingensis F.C.Ho form synonym Asclepias curassavica f. flaviflora Tawada form synonym Asclepias curassavica var. concolor Krug & Urb. variety synonym Asclepias cultriformis (Harv. ex Schltr.) Schltr. species accepted Asclepias cubensis Wender. species synonym Asclepias crocea Woodson species accepted Asclepias cristata S.Moore species synonym Asclepias crispa Schltr., 1896 species doubtful Asclepias crassinervis N.E.Br. species accepted Asclepias coulteri A.Gray species accepted Asclepias cornuti Decne. species synonym Asclepias cordata Sessé & Moc. species doubtful Asclepias cooperi N.E.Br. species accepted Asclepias conzattii Woodson species accepted Asclepias contrayerba Sessé & Moc. species accepted Asclepias constricta M.E.Jones species accepted Asclepias consanguinea Kunze species synonym Asclepias concinna (Schltr.) Schltr. species accepted Asclepias compressidens (N.E.Br.) Nicholas species accepted Asclepias compressa Moench species synonym Asclepias cochabambensis Rusby species synonym Asclepias clusiifolia Horsf. ex Schult. species doubtful Asclepias citrifolia Hook. & Arn. species heterotypic synonym Asclepias cirrosa Ehrenb. ex Schweinf. species doubtful Asclepias circinalis (Decne.) Woodson species accepted Asclepias chapalensis Brandegee species synonym Asclepias candida Vell. species accepted Asclepias campestris var. schlechteri Kuntze variety synonym Asclepias campestris var. heterophylla Kuntze variety synonym Asclepias campestris var. flava Kuntze variety synonym Asclepias campestris var. angustifolia Kuntze variety synonym Asclepias calceolus S.Moore species synonym Asclepias buchwaldii De Wild. species accepted Asclepias bridgesii E.Fourn. species synonym Asclepias brevipes (Schltr.) Schltr. species accepted Asclepias brevicuspis (E.Mey.) Schltr. species accepted Asclepias bracteolata E.Fourn. species accepted Asclepias boliviensis E.Fourn. species accepted Asclepias blanchetii E.Fourn. species synonym Asclepias bifida W.H.Blackw. species accepted Asclepias bidentata Hemsl. species synonym Asclepias bicuspis N.E.Br. species accepted Asclepias bicolor Moench species synonym Asclepias baumii Schltr. species accepted Asclepias bartlettiana Woodson species synonym Asclepias barjoniifolia E.Fourn. species accepted Asclepias barbata Linnaeus ex Jackson species doubtful Asclepias aurea (Schltr.) Schltr. species accepted Asclepias aurantiaca Salisb. species synonym Asclepias atroviolacea Woodson species accepted Asclepias arenicola Nash species synonym Asclepias apocynifolia Woodson species accepted Asclepias apocinum Gaterau species synonym Asclepias angulosa Regel species doubtful Asclepias amsonioides Standl. species synonym Asclepias amoena Ruiz & Pav. ex Hemsl. species heterotypic synonym Asclepias ameliae S.Moore species accepted Asclepias amabilis N.E.Br. species accepted Asclepias alticola E.Fourn. species synonym Asclepias alexifarmacas Rojas Acosta species doubtful Asclepias alboaurantiaca Jacq. species synonym Asclepias albens (E.Mey.) Schltr. species accepted Asclepias ageratoides M.A.Curtis species accepted Asclepias affinis De Wild. species synonym Asclepias aequicornu E.Fourn. species accepted Asclepias adscendens (Schltr.) Schltr. species accepted Asclepias acuminata Pursh species heterotypic synonym Asclepias acornuta Kellogg species synonym Cynanchum fuscum (Lour.) Schult. species synonym Anthanotis viridis (Walter) Raf. species synonym Anthanotis procumbens Raf. species synonym Anthanotis pedicellata (Walter) Raf. species synonym Lagarinthus truncatus E.Mey. species synonym Lagarinthus revolutus E.Mey. species synonym Lagarinthus peltigerus E.Mey. species synonym Lagarinthus navicularis E.Mey. species synonym Lagarinthus multicaulis E.Mey. species synonym Lagarinthus gibbus E.Mey. species synonym Lagarinthus flexuosus E.Mey. ex Decne. species synonym Lagarinthus expansus E.Mey. species synonym Lagarinthus brevicuspis E.Mey. species synonym Anantherix viridis (Elliott) Nutt. species synonym Anantherix verrucosa Raf. species synonym Anantherix torreyana G.Don species synonym Anantherix pumilis Nutt. species doubtful Anantherix paniculata Nutt. species synonym Anantherix ovata Raf. species doubtful Anantherix grandiflora Raf. species doubtful Trachycalymma shabaense Goyder species synonym Trachycalymma pulchellum (Decne.) Bullock species synonym Trachycalymma pseudofimbriatum Goyder species synonym Trachycalymma minutiflorum Goyder species synonym Trachycalymma graminifolium (Wild) Goyder species synonym Trachycalymma foliosum (K.Schum.) Goyder species synonym Trachycalymma fimbriatum (Weim.) Bullock species synonym Trachycalymma cristatum (Decne.) Bullock species synonym Trachycalymma buchwaldii (Schltr. & K.Schum.) Goyder species synonym Trachycalymma amoenum (K.Schum.) Goyder species synonym Ampelanus riparius Raf. species synonym Oligoron tenuifolium Raf. species synonym Oligoron longifolium var. hirsutum Raf. variety synonym Aidomene parvula Stopp species synonym Onistis longifolia Raf. species doubtful Asclepias obtusifolia var. latifolia Torr. variety synonym Asclepias tuberosa hort. ex Kunze, 1847 species doubtful Asclepias tuberosa var. tuberosa variety synonym Asclepias tuberosa f. tuberosa form synonym Asclepias syriaca f. syriaca form synonym Asclepias parviflora Leconte ex Decne. species heterotypic synonym Asclepias ovalifolia f. ovalifolia form synonym Asclepias mellodora var. mellodora variety synonym Asclepias marginata Decne. species synonym Asclepias macrophylla Nutt. species synonym Asclepias leucophylla Engelm. species synonym Asclepias lanceolata f. lanceolata form synonym Asclepias cucullata (Schltr.) Schltr. species accepted Asclepias campestris Decne. species heterotypic synonym Oligoron longifolium (Michx.) Raf. species synonym Gomphocarpus meliodorus var. brevicoronata N.E.Br. variety synonym Pachycarpus humilis E.Mey. species synonym Asclepias plicata B.Heyne ex Schult. species doubtful Asclepias vestita var. vestita variety synonym Asclepias longifolia var. hirtella (Pennell) B.L.Turner variety synonym Asclepias tuberosa var. interior (Woodson) Seymour variety synonym Asclepias latifolia Britton species synonym Otaria auriculata (Engelm. ex Torr.) G.Don species synonym Asclepias nivea Sims species heterotypic synonym Asclepias maritima Pall. species doubtful Asclepias lancifolia Steud. species heterotypic synonym Gomphocarpus viridiflorus (Raf.) Spreng. species heterotypic synonym Asclepias angustifolia Sessé & Moc. species synonym Gomphocarpus purpurascens A.Gray species heterotypic synonym Asclepias syriaca var. exaltata (L.) L. variety synonym Asclepias repanda Forssk. ex Steud. species heterotypic synonym Asclepias angustifolia Elliott species heterotypic synonym Pachycarpus fulvus (N.E.Br.) Bullock species synonym Pachycarpus albens E.Mey. species synonym Asclepias purpurascens Walter species heterotypic synonym Asclepias euphorbiifolia Engelm. ex A.Gray species accepted Asclepias mellodora A.St.-Hil. species accepted Asclepias macrophylla Humb. & Bonpl., 1820 species accepted Asclepias buchwaldii var. angustifolia De Wild. variety synonym Asclepias greeniana Nutt. ex W.H.Baxter & Wooster species doubtful Schizoglossum welwitschii (Rendle) N.E.Br. species synonym Oxypteryx curtissii (A.Gray) Small species synonym Asclepias mtorwiensis Goyder species accepted Gomphocarpus crispus (P.J.Bergius) R.Br. ex Schult. species synonym Asclepias curassavica f. pallidiflora Griseb. form synonym Asclepias sibirica Murray species accepted Asclepias inaequalis Goyder species accepted Asclepias alpestris (K.Schum.) Goyder species accepted Asclepias syriaca var. syriaca variety synonym Asclepias quadrifolia var. lanceolata Alph.Wood variety synonym Asclepias mellodora var. multinervis (E.Fourn.) Bollw. variety synonym Asclepias tricorniculata Schltr. species doubtful Polyotus lanuginosus (Nutt.) Nutt. species synonym Asclepias fragrans (Benth.) Decne. species heterotypic synonym Asclepias crispa P.J.Bergius species accepted Acerates amboyensis Berry, 1909 species doubtful Asclepias graogramanii L.O.Alvarado, M.G.Chávez & J.A.Álvarez species accepted Asclepias sauronii M.G.Chávez & L.O.Alvarado species accepted Asclepias pulchella Salisb. species heterotypic synonym Asclepias xysmalobioides Hilliard & B.L.Burtt species heterotypic synonym Gomphocarpus cordifolius (Benth.) Benth. species homotypic synonym Asclepias occidentalis Goyder species accepted Asclepias viridiflora Pursh species doubtful Asclepias cordata Walter species heterotypic synonym Asclepias angadensis S.Moore species doubtful Asclepias edentata Goyder species accepted Asclepias capitellata Raf. species synonym Schizoglossum alpestre K.Schum. species synonym Asclepias uncialis subsp. uncialis subspecies synonym Asclepias uncialis var. ruthiae (Maguire) Sundell variety synonym Asclepias longifolia subsp. hirtella (Pennell) J.Farmer & C.R.Bell subspecies synonym Asclepias asperula var. asperula variety synonym Asclepias plumieriifolia Ram.Goyena species synonym Asclepias modesta var. foliosa N.E.Br. variety synonym Acerates engelmanniana Woods species doubtful Asclepias dregeana var. calceolus (S.Moore) N.E.Br. variety synonym Gomphocarpus gibbus var. media N.E.Br. variety synonym Asclepias longirostra Goyder species accepted Asclepias macrosperma Eastw. ex Vail species synonym Asclepias ledofolia Torr. species doubtful Asclepias angustifolia Schult. species synonym Asclepias exaltata Muhl. ex Bigel. species doubtful Asclepias stathmostelmoides Goyder species accepted Asclepias campestris f. rosea Stuck. ex Seckt form synonym Pachycarpus viridiflorus E.Mey. species synonym Asclepias deregeana var. calceolus (S.Moore) N.E.Br. variety synonym Asclepias amplexicaulis Michx. species synonym Asclepias viridiflora var. pubescentitomentosa Hook. variety synonym Asclepias incarnata Walter species heterotypic synonym Anantherix connivens (Baldwin ex Elliott) A.Gray species proparte synonym Polyotus obovatus (Elliott) Nutt. species synonym Asclepias citrifolia Jacq. species heterotypic synonym Asclepias pubescens Moench species heterotypic synonym Asclepias jaliscana B.L.Rob. species doubtful Pachycarpus graminifolius Wild species synonym Gomphocarpus viridiflorus (E.Mey.) Decne. species heterotypic synonym Asclepias minutiflora (Goyder) Goyder species accepted Asclepias subulata Larrañaga species synonym Asclepias ratiata S.Moore species doubtful Pachycarpus crispus (P.J.Bergius) E.Mey. species synonym Asclepias breviantherae Goyder species accepted Asclepias mellodora var. bodenbenderi (Kuntze) Bollw. variety synonym Polyotus longifolius (Michx.) Nutt. species synonym Otaria fragrans Benth. species synonym Polyotus heterophyllus Nutt. species synonym Asclepias amoena L. species heterotypic synonym Solanoa purpurascens Kuntze, 1891 species heterotypic synonym Asclepias linifolia Lag. ex Spreng. species heterotypic synonym Asclepias viridiflora var. viridiflora variety synonym Asclepias navicularis var. compressidens N.E.Br. variety synonym Asclepias humistriata J.J.A.Van der Walt species doubtful Asclepias feayi Chapm. species homotypic synonym Asclepias dregeana var. sordida N.E.Br. variety synonym Asclepias incarnata f. incarnata form synonym Asclepias microphylla Roxb., 1832 species accepted Schizoglossum theileri S.Moore species synonym Asclepias exaltata Link ex Spreng. species synonym Anantherix pumila (Nutt.) Nutt. species synonym Gomphocarpus longifolius (Michx.) Spreng. species heterotypic synonym Lagarinthus flexuosus E.Mey. species synonym Asclepias incarnata var. longifolia (Michx.) A.Gray variety proparte synonym Asclepias aurea var. brevicuspis S.Moore variety synonym Asclepias foliosa (K.Schum.) Hiern species accepted Asclepias viridiflora (E.Mey.) Goyder species heterotypic synonym Acerates viridiflora (Raf.) Elliott species synonym Asclepias deregeana var. sordida N.E.Br. variety synonym Asclepias citrifolia var. angustifolia Hook. & Arn. variety synonym Asclepias forskohei Schult. species doubtful Asclepias ivesii (Britton) Wooton & Standl. species synonym Asclepias aurea var. vittata N.E.Br. variety synonym Schizoglossum pedunculatum Schltr. species synonym Asclepias spectabile N.E.Br. species doubtful Oxypteryx arenicola (Nash) Greene species synonym Asclepias grandirandii Goyder species accepted Asclepias verticillata var. leptophylla Torr. variety synonym Asclepiodora gomphocarpoides (Decne.) E.Fourn. species synonym Asclepias auriculata Kunth species accepted Asclepias nuttalliana Torr. species heterotypic synonym Asclepias aceratoides M.A.Curtis species heterotypic synonym Asclepias graminifolia (Wild) Goyder species accepted Asclepias montevaga M.Glen, Nicholas & Bester species accepted Asclepias lanceolata var. lanceolata variety synonym Asclepias obtusifolia Kunze species heterotypic synonym Asclepias crassicoronata Goyder species accepted Asclepias lanuginosa Kunth species heterotypic synonym Asclepias syriaca Blanco species heterotypic synonym Asclepias emoryi (Greene) Vail ex Small species synonym Asclepias meliodora var. brevicoronata N.E.Br. variety synonym Asclepias curassavica Griseb. species heterotypic synonym Asclepias tuberosa hort. species homotypic synonym Asclepias crispa var. pseudocrispa (Schltr.) N.E.Br. variety synonym Asclepias crispa var. plana N.E.Br. variety synonym Gomphocarpus hastatus var. angustifolius Meisn. variety synonym Asclepias undulata L. species proparte synonym Asclepias nutans Muhl. ex Steud. species heterotypic synonym Asclepias navicularis var. navicularis variety synonym Gomphocarpus peltiger (E.Mey.) D.Dietr. species synonym Asclepias connivens Baldwin ex Elliott species accepted Asclepias pseudoamabilis Goyder species accepted Asclepias shabaensis (Goyder) Goyder species accepted Asclepias acuminata Willd. ex Schult. species synonym Asclepias cryptoceras var. cryptoceras variety synonym Asclepias dinteri Engl. & Krause species accepted Otaria laxiflora Benth. species synonym Asclepias parviflora Aiton species heterotypic synonym Asclepias pseudofimbriata (Goyder) Goyder species accepted Schizoglossum capitatum Schltr. species synonym Asclepias ramosa Moench, 1794 species synonym Asclepias affinis (Schltr.) Schltr. species heterotypic synonym Asclepias parvifolia Pursh ex Decne. species heterotypic synonym Asclepias sullivantii Torr. species heterotypic synonym Asclepias laxiflora (Benth.) Decne. species heterotypic synonym Asclepias stockenstromense Schltr. species doubtful Asclepias emoryi (Greene) Tidestr. species accepted Asclepias lanceolata E.Ives species heterotypic synonym Gomphocarpus truncatus Harv. species heterotypic synonym Asclepias minor (S.Moore) Goyder species accepted Asclepias meliodora var. meliodora variety synonym Acerates auriculata Engelm. species homotypic synonym Asclepias amoena Ruiz & Pav. species homotypic synonym Asclepias plicata B.Heyne species homotypic synonym Asclepias repanda Forssk. species homotypic synonym Asclepias sullivantii Engelm. species homotypic synonym Asclepias clusiifolia Horsf. species homotypic synonym Asclepias laxiflora Perr. species homotypic synonym Asclepias parviflora Leconte species homotypic synonym Asclepias nutans Muhl. species homotypic synonym Asclepias meadii Torr. species homotypic synonym Asclepias montevidensis Spreng. species homotypic synonym Asclepias ecornuta Kellogg species homotypic synonym Asclepias involucrata Engelm. species homotypic synonym Gomphocarpus auriculatus (Engelm. ex Torr.) K.Schum. species synonym Asclepias exaltata Muhl. species homotypic synonym Asclepias campestris f. rosea Stuck. form homotypic synonym Asclepias barbata Linnaeus species homotypic synonym Asclepias cirrosa Ehrenb. species homotypic synonym Asclepias greeniana Nutt. species homotypic synonym Asclepias illinoensis Michx. species homotypic synonym Gomphocarpus cultriformis Harv. species homotypic synonym Acerates monocephala Lapham species homotypic synonym Schizonotus purpurascens (A.Gray) A.Gray species synonym Asclepias dilatata Linnaeus species homotypic synonym Asclepias margaritacea Hoffmanns. species homotypic synonym Asclepias acuminata Willd. species homotypic synonym Asclepias quinquedentata var. neomexicana Greene variety homotypic synonym Asclepias brachystephana Engelm. species homotypic synonym Asclepias linifolia Lag. species homotypic synonym Asclepias phytolaccoides G.F.Lyon species homotypic synonym Asclepias oreophila Nicholas species homotypic synonym Asclepias asperula (Decne.) Woodson species accepted Acerates bifida Rusby species homotypic synonym Asclepias suaveolens Leconte species homotypic synonym Asclepias lindleyi Gillies species homotypic synonym Asclepias exaltata Link species homotypic synonym Lagarinthus revolutus var. minor E.Mey. variety synonym |