455.0000 Family Apocynaceae Juss.; Gen. Pl.: 143 (1789), nom. cons.

372 genera, ca. 6500 spp. According to modern authors and PCR Asclepiadaceae is only a subfamily of Apocynaceae.

Species listed in database: 6627; hybrids: 9

455.6703 Genus Asclepias L.; Sp. Pl.: 214 (1753)

Distribution: America (esp. USA), Africa, Arabian Peninsula. Exclusion or inclusion of some African genera like Trachycalymma is controversial.

Species listed in database: 208; hybrids: 1

species :

Asclepias adscendens (Schltr.) Schltr.; J. Bot., 455 (1896)

Distribution: Zimbabwe; Mozambique; South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, Free State, KwaZulu-Natal); Lesotho; Eswatini [Swaziland]

26 MOZ ZIM 27 LES SAF SWZ

Synonyms: hidden

= Gomphocarpus adscendens Schltr.; Bot. Jahrb. Syst. 18: Beibl. n. 45 16 (1894)

species :

Asclepias aequicornu E.Fourn.; Mart., Fl. Bras. 6(4): 201 (1885)

Distribution: NE-Brazil (Bahia); WC-Brazil (Goiás); SE-Brazil (Minas Gerais, Sao Paulo); S-Brazil (Paraná, Santa Catarina); Paraguay (Canindeyu, Central); Argentina (Misiones)

84 BRA 85 ARG PAR

species :

Asclepias albens (E.Mey.) Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 5 (1896)

Distribution: Mozambique; South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, Free State, KwaZulu-Natal, E-Cape Prov.); Eswatini [Swaziland]

26 MOZ 27 SAF SWZ

Synonyms: hidden

= Asclepias affinis (Schltr.) Schltr.; J. Bot., 455 (1896)

= Gomphocarpus affinis Schltr.; Bot. Jahrb. Syst. 20: Beibl. n. 51 27 (1895)

= Gomphocarpus albens (E.Mey.) Decne.; Prodr. [A. DC.] 7: 559 (1844)

= Pachycarpus albens E.Mey.; Comm. Pl. Afr. Austr. 214 (1837)

= Xysmalobium albens (E.Mey.) D.Dietr.; Syn. Pl. 2: 902 (1840)

species :

Asclepias albicans S.Watson; Proc. Amer. Acad. Arts 24: 59 (1889)

Name: Whitestem milkweed

Distribution: USA (Arizona, California); Mexico (Baja California Norte, Baja California Sur, Sonora)

76 USA 79 MEX

species :

Asclepias alpestris (K.Schum.) Goyder; Kew Bull. 64(3): 392 (2009)

Distribution: Tanzania

25 TAN

Synonyms: hidden

= Schizoglossum alpestre K.Schum.; Bot. Jahrb. Syst. 30: 384 (1901)

species :

Asclepias amabilis N.E.Br.; Bull. Misc. Inform. Kew 1895: 70 (1895)

Distribution: SE-D.R.Congo [Zaire]; Tanzania; Zambia; Malawi

23 ZAI 25 TAN 26 MLW ZAM

Synonyms: hidden

= Gomphocarpus amabilis (N.E.Br.) Bullock; Kew Bull. 8: 341 (1953)

species :

Asclepias ameliae S.Moore; J. Bot. 50: 345 (1912)

Distribution: SE-D.R.Congo [Zaire]; Angola; Zambia

23 ZAI 26 ANG ZAM

Synonyms: hidden

= Asclepias pulchella (Decne.) N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4(1): 346 (1902), nom. illeg.

= Gomphocarpus pulchellus Decne.; Ann. Sci. Nat., ser. II. 9: 325 (1838)

= Trachycalymma pulchellum (Decne.) Bullock; Kew Bull. 350 (1953)

species :

Asclepias amplexicaulis Sm.; Nat. Hist. Lepidopt. Georgia 1: 13 (-14; t. 7) (1797)

Name: Clasping milkweed

Distribution: USA (Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Michigan, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia)

74 USA 75 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias gladewitzii Farw.; Amer. Midl. Naturalist 12: 128 (1930)

= Asclepias obtusifolia Michx.; Fl. Bor.-Amer. 1: 115 (1803)

= Asclepias purpurascens Walter; Fl. Carol.: 105 (1788), nom. illeg.

= Asclepias rotundifolia Raf.; Atlantic J. 1: 152 (1832), nom. illeg.

species :

Asclepias angustifolia Schweig.; Enum. Pl. Hort. Bot. Regiomont. 13 (1812)

Name: Arizona milkweed

Distribution: USA (Arizona); Mexico (Ciudad de México, Chiapas, Chihuahua, Durango, Guerrero, Hidalgo , Jalisco, México State, Michoacán, Nayarit, Nuevo Leon, Oaxaca, Querétaro, San Luis Potosí, Sonora, Tamaulipas, Veracruz, Zacatecas)

76 USA 79 MEX

Synonyms: hidden

= Asclepias angustifolia Sessé & Moc.; Fl. Mexic., ed. 2: 72 (1894), nom. illeg.

= Asclepias jaliscana M.E.Jones; Contr. W. Bot. 12: 49 (1908), nom. illeg.

= Asclepias linifolia Lag. ex Spreng.; Syst. Veg. 1: 847 (1824), nom. illeg.

= Asclepias rubricaulis Kunth; Nov. Gen. et Sp. 3: 148 (1818)

= Asclepias salicifolia G.Lodd. ex J.Forbes; Hort. Woburn.: 50 (1833), nom. illeg.

= Asclepias tapalpana M.E.Jones; Contr. W. Bot. 14: 35 (1912)

= Asclepias virgata Balb.; Cat. Hort. Taur. 14 (1813)

= Gomphocarpus angustifolius (Schweigg.) Link; Enum. Hort. Berol. Alt. 1: 251 (1821)

species :

Asclepias apocynifolia Woodson; Amer. J. Bot. 22: 687 (1935)

Distribution: Mexico (Tamaulipas)

79 MEX

species :

Asclepias arenaria Torr.; Bot. Mex. Bound. 162 (1859)

Name: Sand milkweed

Distribution: USA (Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Wyoming); Mexico (Chihuahua, Durango)

73 USA 74 USA 77 USA 79 MEX

species :

Asclepias asperula (Decne.) Woodson; Ann. Missouri Bot. Gard. 41: 193 (1954)

subspecies :

subsp. asperula

Name: Spider milkweed

Distribution: USA (Arizona, California, Colorado, Idaho, Nebraska, New Mexico, Nevada, Texas, Utah); Mexico (Chihuahua, Coahuila, Durango, Hidalgo, Nuevo Leon, San Luis Potosí, Sonora, Tamaulipas)

73 USA 74 USA 76 USA 77 USA 79 MEX

Synonyms: hidden

= Asclepiodora asperula (Decne.) E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 369 (1882)

= Acerates asperula Decne.; Prodr. [A. DC.] 8: 522 (1844)

subspecies :

subsp. capricornu (Woodson) Woodson; Ann. Missouri Bot. Gard. 41: 195 (1954)

Name: Antelopehorns

Distribution: USA (Arizona, Kansas, Nebraska, New Mexico, Oklahoma, Texas)

74 USA 76 USA 77 USA

Synonyms: hidden

= Anantherix angustifolia Raf.; Atlantic J. 1: 146 (1832)

= Anantherix decumbens Nutt.; Trans. Amer. Philos. Soc., n.s. 5: 207 (1835)

= Anantherix nuttaliana G.Don; Gen. Hist. 4: 146 (1837)

= Asclepias asperula var. decumbens (Nutt.) Shinners; Field & Lab. 22: 58 (1954)

= Asclepias capricornu subsp. occidentalis Woodson; Ann. Missouri Bot. Gard. 32: 371 (1945)

= Asclepias capricornu Woodson; Ann. Missouri Bot. Gard. 32: 370 (1945)

= Asclepias decumbens (Nutt.) K.Schum.; Engl. & Prantl, Nat. Pflanzenfam. 4(2): 239 (1895), nom. illeg.

= Asclepiodora decumbens (Nutt.) A.Gray; Proc. Amer. Acad. Arts 12: 67 (1876)

species :

Asclepias atroviolacea Woodson; Ann. Missouri Bot. Gard. 41: 198 (1954)

Distribution: Mexico (Chihuahua, Durango, Sonora)

79 MEX

Conservation Status: IUCN I

species :

Asclepias aurea (Schltr.) Schltr.; J. Bot., 455 (1896)

Distribution: Congo [Brazzaville]; Angola; Zambia; Zimbabwe; Namibia; Botswana; South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, Free State, KwaZulu-Natal, N-Cape Prov.?, E-Cape Prov.); Lesotho; Eswatini [Swaziland]

23 CON 26 ANG ZAM ZIM 27 BOT LES NAM SAF SWZ

Synonyms: hidden

= Aidomene parvula Stopp; Engl. Bot. Jahrb. 87: 21 (1967)

= Asclepias aurea var. brevicuspis S.Moore; J. Bot. 40: 255 (1902)

= Asclepias aurea var. vittata N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1). 686 (1908)

= Asclepias baumii Schltr.; Warb. (ed.), Kunene-Sambesi Exped.: 341 (1903) (tentative synonym fide Goyder et al. 2023)

= Asclepias radiata S.Moore; J. Bot. 50: 345 (1912)

= Gomphocarpus aureus Schltr.; Bot. Jahrb. Syst. 18: Beibl. n. 45 (1894) 7

= Gomphocarpus schizoglossoides Schltr.; Bot. Jahrb. Syst. 18(Beibl. 45): 21 (1894)

= Schizoglossum pedunculatum Schltr.; Verh. Bot. Vereins Prov. Brandenburg 35: 50 (1893), non Asclepias pedunculata (Decne.) Dandy 1952

species :

Asclepias auriculata Kunth; Nov. Gen. et Sp. 3: 191. t. 228 (1818)

Distribution: Mexico (Chiapas, Coahuila, Durango, Guerrero, Hidalgo, Jalisco, México State, Michoacán, Morelos, Nayarit, Oaxaca, Puebla, Queretaro, San Luis Potosi, Veracruz, Zacatecas); Guatemala; El Salvador

79 MEX 80 ELS GUA

Synonyms: hidden

= Asclepias fragrans (Benth.) Decne.; Prodr. [A. DC.] 8: 571 (1844)

= Asclepias mazatlanensis Sessé & Moc.; Naturaleza (Mexico City), ser. 2, 1(App.): 43 (1888)

= Asclepias purpusii Brandegee; Zoe 5: 251 (1908)

= Otaria fragrans Benth.; Pl. Hartw.: 89 (1842)

species :

Asclepias barjoniifolia E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 372 (1882)

Distribution: Bolivia (Chuquisaca, Cochabamba, Potosí, Santa Cruz, Tarija); Argentina (Jujuy, Salta, Tucuman)

83 BOL 85 ARG

Synonyms: hidden

= Asclepias cochabambensis Rusby; Mem. Torrey Bot. Club 4: 221 (1895)

= Asclepias fiebrigii Schltr.; Bot. Jahrb. Syst. 37: 608 (1906)

= Asclepias kuntzei Schltr.; Österr. Bot. Zeitschr. 45: 450 (1895)

= Asclepias ramosa E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 373 (1882)

species :

Asclepias bicuspis N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 675 (1908)

Distribution: +South Africa (+KwaZulu-Natal)

27 SAF

Conservation Status: IUCN Ex

species :

Asclepias bifida W.H.Blackw.; Southwest. Nat. 9: 176 (1964)

Distribution: Mexico (Coahuila, Nuevo Leon)

79 MEX

species :

Asclepias boliviensis E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 381 (1883)

Distribution: Bolivia (Chuquisaca, Cochabamba, Potosí, Santa Cruz, Tarija); Argentina (Catamarca, Chaco, Formosa, Jujuy, Salta, Santiago del Estero, Tucuman)

83 BOL 85 ARG

Synonyms: hidden

= Asclepias bridgesii E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 383 (1882)

= Asclepias weddellii E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 381 (1882)

species :

Asclepias brachystephana Engelm. ex Torr.; Bot. Mex. Bound. 163 (1859)

Name: Bract milkweed

Distribution: USA (Arizona, New Mexico, Texas); Mexico (Aguascalientes, Chihuahua, Coahuila, Durango, Guanajuato, Nuevo Leon, San Luis Potosí, Sonora, Zacatecas)

76 USA 77 USA 79 MEX

Synonyms: hidden

= Asclepiodora circinalis E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 369 (1882)

species :

Asclepias bracteolata E.Fourn.; Mart., Fl. Bras. 6(4): 200 (1885)

Distribution: WC-Brazil (Goiás, Brasilia Distrito Federal); SE-Brazil (Minas Gerais); S-Brazil (Santa Catarina)

84 BRA

species :

Asclepias breviantherae Goyder; Kew Bull. 64(3): 389 (2009)

subspecies :

subsp. breviantherae

Distribution: Tanzania; Malawi

25 TAN 26 MLW

subspecies :

subsp. minor Goyder; Kew Bull. 64(3): 391 (2009)

Distribution: Tanzania

25 TAN

species :

Asclepias brevicuspis (E.Mey.) Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 5 (1896)

Distribution: South Africa (Mpulamanga, KwaZulu-Natal, E-Cape Prov.)

27 SAF

Synonyms: hidden

= Gomphocarpus brevicuspis (E.Mey.) D.Dietr.; Syn. Pl. 2: 900 (1840)

= Lagarinthus brevicuspis E.Mey.; Comm. Pl. Afr. Austr. 204 (1838)

species :

Asclepias brevipes (Schltr.) Schltr.; J. Bot., 455 (1896)

Distribution: South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, Free State)

27 SAF

Synonyms: hidden

= Gomphocarpus brevipes Schltr.; Bot. Jahrb. Syst. 20: Beibl. n. 51 28 (1895)

species :

Asclepias buchwaldii De Wild.; Ann. Mus. Congo, ser. V. 185 (1904)

Distribution: D.R.Congo [Zaire]; Burundi; Tanzania; Zambia; Malawi

23 BUR ZAI 25 TAN 26 MLW ZAM

Synonyms: hidden

= Asclepias affinis De Wild.; Ann. Mus. Congo, ser. V. 184 (1904), non (Schltr.) Schltr.

= Asclepias buchwaldii var. angustifolia De Wild.; Ann. Mus. Congo Belge, Bot., sér. 5, 1: 185 (1904)

= Gomphocarpus buchwaldii Schltr. & K.Schum. ex K.Schum.; Bot. Jahrb. Syst. 33: 325 (1903)

= Trachycalymma buchwaldii (Schltr. & K.Schum.) Goyder; Kew Bull. 56(1): 146 (2001)

species :

Asclepias californica Greene; Erythea 1: 92 (1893), et Man. Bot. San Franc. Bay 242 (1894)

subspecies :

subsp. californica

Name: California milkweed

Distribution: USA (California)

76 USA

Synonyms: hidden

= Acerates tomentosa Torr.; Emory, Rep. U.S. Mex. Bound. 2(1): 160 (1859)

= Gomphocarpus tomentosus (Torr.) A.Gray; S. Wats., Bot. California 1: 477 (1876), nom. illeg.

= Gomphocarpus tomentosus var. xanti A.Gray; S. Wats., Bot. California 1: 477 (1876)

= Gomphocarpus torreyi J.F.Macbr.; Contr. Gray Herb. 65: 42 (1922)

= Gomphocarpus torreyi var. xanti (A.Gray) J.F.Macbr.; Contr. Gray Herb. 65: 42 (1922)

subspecies :

subsp. greenei Woodson; Ann. Missouri Bot. Gard. 41: 178 (1954)

Name: Greene´s milkweed

Distribution: USA (California)

76 USA

species :

Asclepias candida Vell.; Fl. Flum. 118 3: t. 65 (1827)

Distribution: Bolivia (Santa Cruz); NE-Brazil; WC-Brazil (Mato Grosso, Goiás, Brasilia Distrito Federal); SE-Brazil (Minas Gerais, Sao Paulo); S-Brazil (Paraná); Paraguay (Amambay, Caaguazu, Cordillera, Paraguari, San Pedro); Uruguay (Rivera); Argentina (Misiones)

83 BOL 84 BRA 85 ARG PAR URU

Synonyms: hidden

= Asclepias blanchetii E.Fourn.; Mart., Fl. Bras. 6(4): 201 (1885)

= Asclepias campestris Decne.; Prodr. [A. DC.] 8: 566 (1844)

= Asclepias marginata Decne.; Prodr. [A. DC.] 8: 566 (1844)

= Asclepias multinervis E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 383 (1882)

= Asclepias pallida E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 383 (1882), non Roxb.

= Asclepias selloana E.Fourn.; Mart., Fl. Bras. 6(4): 202 (1885)

species :

Asclepias cinerea Walter; Fl. Carol. 105 (1788)

Name: Carolina milkweed

Distribution: USA (Alabama, Florida, Georgia, Mississippi, South Carolina)

78 USA

Synonyms: hidden

= Ampelanus riparius Raf.; Autikon Bot. 183 (1840)

= Enslenia cinerea (Walter) Spreng.; Syst. 1: 850 (1824)

species :

Asclepias circinalis (Decne.) Woodson; Ann. Missouri Bot. Gard. 28: 207 (1941)

Distribution: Mexico (Guerrero, México State, Michoacán, Oaxaca, Puebla)

79 MEX

Synonyms: hidden

= Acerates circinalis Decne.; Ann. Sci. Nat., ser. II. 9: 322 (1838)

species :

Asclepias compressidens (N.E.Br.) Nicholas; Bothalia 17(1): 19 (1987)

Distribution: South Africa (E-Cape Prov.)

27 SAF

Conservation Status: IUCN I

Synonyms: hidden

= Asclepias navicularis var. compressidens N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 683 (1908)

species :

Asclepias concinna (Schltr.) Schltr.; J. Bot., 456 (1896)

Distribution: South Africa (KwaZulu-Natal, E-Cape Prov.)

27 SAF

Conservation Status: IUCN E

Synonyms: hidden

= Gomphocarpus concinnus Schltr.; J. Bot. 33: 270 (1895)

species :

Asclepias connivens Baldwin ex Elliott; Sketch 1: 320 (1817)

Name: Largeflower milkweed

Distribution: USA (Alabama, Florida, Georgia, Mississippi, South Carolina)

78 USA

Synonyms: hidden

= Acerates connivens (Baldwin ex Elliott) Decne.; Prodr. [A. DC.] 8: 521 (1844)

= Anantherix connivens (Baldwin ex Elliott) Feay; Wood, Class-Book Bot. 594 (1861)

= Anantherix paniculata Nutt.; Trans. Amer. Philos. Soc., n.s. 5: 203 (1835)

= Anantherix torreyana G.Don; Gen. Hist. 4: 146 (1837)

= Anantherix verrucosa Raf.; New Fl. 4: 60 (1838)

= Anantherix viridis (Elliott) Nutt.; Gen. N. Amer. Pl. 1: 169 (1818)

= Asclepiodora viridis (Elliott) A.Gray; Proc. Amer. Acad. Arts 12: 66 (1876)

= Asclepiodora viridis var. angustior A.Gray; Syn. Fl. N. Amer. 2(1): 89 (1878)

= Podostigma viridis Elliott; Sketch Bot. S. Carolina 1: 327 (1817)

species :

Asclepias constricta M.E.Jones; Contrib. Western Bot. 12: 49 (1908)

Distribution: Mexico (Mexico State)

79 MEX

species :

Asclepias contrayerba Sessé & Moc.; Fl. Mexic., ed. 2: 73 (1894)

Distribution: Mexico (Aguascalientes, Chiapas, Chihuahua, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nayarit, Oaxaca, Puebla, Queretaro, Sinaloa, Tabasco, Tamaulipas, Veracruz); Honduras

79 MEX 80 HON

species :

Asclepias conzattii Woodson; Ann. Missouri Bot. Gard. 41: 129 (1954)

Distribution: Mexico (Oaxaca)

79 MEX

species :

Asclepias cooperi N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 707 (1908)

Distribution: South Africa (E-Cape Prov.)

27 SAF

Conservation Status: IUCN I

species :

Asclepias cordifolia (Benth.) Jeps.; Fl. W. Mid. Calif. 384 (1901)

Name: Heartleaf milkweed

Distribution: USA (California, Nevada, Oregon)

73 USA 76 USA

Synonyms: hidden

= Acerates atropurpurea Kellogg; Proc. Calif Acad. 65, rept. 69 (1854 publ. 1859)

= Acerates cordifolia Benth.; Pl. Hartw. 323 (1840)

= Asclepias ecornuta Kellogg ex A.Gray; Syn. Fl. N. Amer. 2(1): 100 (1878), nom. inval.

= Gomphocarpus cordifolius (Benth.) Benth. ex A.Gray; S. Wats., Bot. California 1: 477 (1876)

species :

Asclepias coulteri A.Gray; Proc. Amer. Acad. Arts 12: 71 (1877)

Distribution: Mexico (Guanajuato, Hidalgo, Querétaro, San Luis Potosí, Tamaulipas)

79 MEX

Synonyms: hidden

= Asclepias tithymaloides Greene; Erythea 1: 151 (1893)

species :

Asclepias crassicoronata Goyder; Kew Bull. 64(3): 377 (2009)

Distribution: S-Tanzania; Zambia; Malawi

25 TAN 26 MLW ZAM

species :

Asclepias crassinervis N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 671 (1907)

Distribution: South Africa (Mpulamanga); Eswatini [Swaziland]

27 SAF SWZ

Synonyms: hidden

= Stathmostelma crassinerve (N.E.Br.) Bullock; Kew Bull. 15: 195 (1961)

species :

Asclepias crispa P.J.Bergius; Desc. Pl. Cap. 75 (1767)

Distribution: South Africa (N-Cape Prov., W-Cape Prov., E-Cape Prov.)

27 SAF

Synonyms: hidden

= Asclepias crispa var. plana N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 704 (1908)

= Asclepias crispa var. pseudocrispa (Schltr.) N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 704 (1908)

= Asclepias pseudocrispa Schltr.; J. Bot. 33: 357 (1895)

= Asclepias repanda Forssk. ex Steud.; Nom. ed. I. 76, ed. II. 1: 146 (1821)

= Asclepias sabulosa Schltr.; J. Bot., 454 (1896)

= Asclepias sinuosa Burm.f.; Fl. Indica, Prodr. Fl. Cap.: 7 (1768)

= Gomphocarpus arenarius Schltr.; Verh. Bot. Vereins Brandenb. 35: 52 (1893)

= Gomphocarpus crispus (P.J.Bergius) Aiton; Hort. Kew., ed. 2, 2: 79 (1811)

= Gomphocarpus hastatus var. angustifolius Meisn.; London J. Bot. 2: 543 (1843)

= Pachycarpus crispus (P.J.Bergius) E.Mey.; Comm. Pl. Afr. Austr. 214 (1838)

= Xysmalobium crispum (P.J.Bergius) D.Dietr.; Syn. Pl. 2: 902 (1840)

species :

Asclepias crocea Woodson; Ann. Missouri Bot. Gard. 41: 95 (1954)

Distribution: Mexico (Jalisco)

79 MEX

species :

Asclepias cryptoceras S.Watson; Bot. King, Exp. 283. t. 28 (1871)

subspecies :

subsp. cryptoceras

Name: Pallid milkweed

Distribution: USA (Arizona, California, Colorado, Nevada, Utah, Wyoming)

73 USA 76 USA

Synonyms: hidden

= Acerates latifolia Torr. & Frem.; Frem. Rep. Exped. 317 (1845)

subspecies :

subsp. davisii (Woodson) Woodson; Ann. Missouri Bot. Gard. 41: 180 (1954)

Name: Davis´ milkweed

Distribution: USA (California, Idaho, Nevada, Oregon, Washington State, Wyoming)

73 USA 76 USA

Synonyms: hidden

= Asclepias cryptoceras var. davisii (Woodson) W.H.Baker; Leafl. W. Bot. 7: 107 (1953)

= Asclepias davisii Woodson; Ann. Missouri Bot. Gard. 26: 261 (1939)

species :

Asclepias cucullata (Schltr.) Schltr.; J. Bot., 455 (1896)

subspecies :

subsp. cucullata

Distribution: Zimbabwe; South Africa (Limpopo, Mpulamanga, Free State, KwaZulu-Natal, E-Cape Prov.); Lesotho; Eswatini [Swaziland]

26 ZIM 27 LES SAF SWZ

Synonyms: hidden

= Gomphocarpus cucullatus Schltr.; Bot. Jahrb. Syst. 18: Beibl. n. 45 17 (1894)

= Trachycalymma cucullatum (Schltr.) Bullock; Kew Bull. 620 (1955 publ. 1956)

subspecies :

subsp. scabrifolia (S.Moore) Goyder; Kew Bull. 56(1): 159 (2001)

Distribution: Zimbabwe; Mozambique

26 MOZ ZIM

Synonyms: hidden

= Asclepias scabrifolia S.Moore; J. Bot. 46: 297 (1908)

species :

Asclepias cultriformis (Harv. ex Schltr.) Schltr.; Bot. Jahrb. Syst. 18: Beibl. n. 45. 31 (1894)

Distribution: South Africa (Limpopo, Gauteng, Mpulamanga, KwaZulu-Natal, E-Cape Prov.); Eswatini [Swaziland]

27 SAF SWZ

Conservation Status: IUCN R

Synonyms: hidden

= Gomphocarpus cultriformis Harv. ex Schltr.; Bot. Jahrb. Syst. 18: Beibl. n. 31 17 (1894)

species :

Asclepias curassavica L.; Sp. Pl. 215 (1753)

Name: Algodoncillo, Platanillo, Platanillo matizado, Yerba de mariposas (ES); Bastard ipecac, Blood flower, Red milkweed, Wild ipecac (EN); Curacao-Seidenpflanze (DE)

Distribution: Germany [I]; Spain [I]; Malta [I]; Greece [I]; Crete [I]; Morocco [I]; Madeira [I] (Madeira Isl. [I], Porto Santo Isl. [I]); Canary Isl. [I] (Lanzarote [I], Gran Canaria [I], Tenerife [I], La Gomera [I], La Palma Isl. [I]); Cape Verde Isl. [I] (Santo Antao Isl. [I], Sao Vicente Isl. [I], Ilha Brava [I]); Guinea [I]; Burkina Faso [I]; Cameroon [I]; Bioko Isl. [Fernando Poo] [I]; São Tomé [I]; Annobon Isl. [I]; Congo [Brazzaville] [I]; Malawi [I]; Zimbabwe [I]; Mozambique [I]; South Africa [I]; Seychelles [I]; Chagos Arch. [I] (Diego Garcia [I]); East Aegaean Isl. [I] (Kos [I]); Afghanistan [I]; Cyprus [I]; China [I] (Anhui [I], Fujian [I], Guangdong [I], Guangxi [I], Guizhou [I], Hainan [I], Hubei [I], Hunan [I], Jiangsu [I], Jiangxi [I], Qinghai [I], Sichuan [I], Yunnan [I], Zhejiang [I]); Tibet [I]; Japan [I] (Shikoku [I], Kyushu [I]); Ryukyu Isl. [I]; Taiwan [I]; Pakistan [I]; Nepal [I]; Bhutan [I]; India [I] (almost throughout); Sri Lanka [I]; Bangladesh [I]; Myanmar [I]; Laos [I]; Cambodia [I]; Vietnam [I]; peninsular Malaysia [I]; Singapore [I]; Borneo [I]; Sulawesi [I]; Philippines [I]; Java [I]; Lesser Sunda Isl. [I] (Bali [I], etc.); Moluccas [I]; Cocos [Keeling] Isl. [I]; New Guinea [I]; Bismarck Arch. [I]; Solomon Isl. [I]; Australia [I] (Western Australia [I], South Australia [I], Queensland [I], New South Wales [I], Victoria [I]); New Caledonia [I] (incl. Ile des Pins [I], Loyalty Isl. [I]); Rotuma Isl. [I]; Vanuatu [I]; Tonga [I] (Tongatapu [I], ´Eua [I], Vava´u [I]); Fiji [I]; American Samoa [I] (Tutuila [I]); [Western] Samoa [I] (´Upolu [I], Savai´i [I]); Gilbert Isl. [I] (Tarawa [I]); N-Line Isl. [I] (Tabueran [I]); Cook Isl. [I] (Rarotonga [I], Mangaia [I], Aitutaki [I], Ngaputoru Group [I]); Marquesas Isl. [I] (Eiao [I], Nuku Hiva [I], Ua Huka [I], Ua Pou [I], Hiva Oa [I], Tahuata [I], Mohotani [I], Fatu Hiva [I]); Society Isl. [I] (Tahiti [I], Moorea [I], Raiatea [I]); Tuamotu Arch. [I] (Takapoto Atoll [I]); Easter Isl. [I]; Palau [I] (Koror [I], Peleliu [I], Sonsorol [I]); Northern Marianas [I] (Saipan [I], Tinian [I], Aguijan [I], Rota [I]); Guam [I]; Fed. States of Micronesia [I] (Yap [I], Ulithi [I], Woleai [I], Faraulep [I], Ifalik [I], Lamotrek [I], Satawal [I], Namonuito [I], Nomwin [I], Murilo [I], Truk [I], Tol [I], Piis [I], Etal [I], Satawan [I], Nukuoro [I], Kapingamarangi [I], Mokil [I], Pohnpei [I], Pingelap [I], Kosrae [I]); Marshall Isl. [I] (Lae [I], Utitik [I], Ailuk [I], Ailinglapalap [I], Majuro [I], Arno [I], Jaluit [I]); Hawaii [I] (Kauai [I], Oahu [I], Molokai [I], Lanai [I], Maui [I], Kahoolawe Isl. [I], Hawaii Isl. [I]); USA [I] (California [I], Florida [I], Louisiana [I], Tennessee [I], Texas [I]); Bermuda; Mexico (Aguascalientes, Baja California Norte, Baja California Sur, Campeche, Ciudad de México, Chiapas, Chihuahua, Colima, Guanajuato, Guerrero, Hidalgo, Jalisco, México State, Michoacán, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Querétaro, Quintana Roo, Sinaloa, Sonora, Tabasco, Tamaulipas, Veracruz, Yucatán, Zacatecas); Guatemala; Belize; El Salvador; Honduras; Nicaragua; Nicaragua; Costa Rica; Panama; Bahamas; Turks & Caicos Isl.; Cuba; Cayman Isl.; Jamaica; Hispaniola; Puerto Rico; Navassa Isl.; Virgin Isl. (Guana, St. Croix, St. John, St. Thomas, Tortola, Virgin Gorda); St. Barthélémy; Saba; Antigua; Montserrat; Guadeloupe; Dominica; Martinique; St. Lucia; Grenadines; St. Vincent; Barbados; Tobago; Trinidad; Colombia (Amazonas, Antioquia, Bolívar, Boyacá, Caldas, Cauca, Chocó, Cundinamarca, Huila, La Guajira, Magdalena, Meta, Nariño, Norte de Santander, Putumayo, Quindío, San Andrés, Providencia y Santa Catalina, Santander, Valle); Isla Margarita; Venezuela (Aragua, Bolívar, Delta Amacuro, Venezuela Distrito Federal, Falcon, Guarico, Lara, Merida, Miranda, Nueva Esparta, Sucre, Tachira, Zulia); Guyana; Surinam; French Guiana; Ecuador; Galapagos; Peru; Bolivia (Beni, Chuquisaca, Cochabamba, La Paz, Pando, Santa Cruz, Tarija); N-Brazil (Amapa, Pará, Amazonas, Acre); NE-Brazil (Maranhao, Piauí, Ceara, Rio Grande do Norte, Pernambuco, Bahia, Alagoas, Sergipe); WC-Brazil (Mato Grosso, Goiás, Brasilia Distrito Federal, Mato Grosso do Sul); SE-Brazil (Minas Gerais, Espirito Santo, Sao Paulo, Rio de Janeiro); S-Brazil (Paraná, Rio Grande do Sul, Santa Catarina); Paraguay (Central, Cordillera, Guaira, Paraguari); Argentina (Buenos Aires, Catamarca, Chaco, Corrientes, Entre Rios, Formosa, Jujuy, Misiones, Salta, Santa Fe, San Juan, Tucuman); Chile (Arica y Parinacota, Tarapacá)

11 ger 12 spa 13 grc kri mlt 20 mor 21 cny cvi mdr 22 bkn gui 23 ann bio cmn con sao 26 mlw moz zim 27 saf 29 cgs sey 34 afg cyp eai 36 chi tib 38 jap nns tai 40 ban bhu ind nep pak srl 41 cbd lao mya vie 42 bor cki jaw lsi mly mol nwg phi sng sul 43 bis sol 50 aus 60 asa fij gil nwc rot sam ton van 61 coo eas lin mrq sci tua 62 gum mic mrn mrs plu 63 haw 76 usa 77 usa 78 usa 79 MEX 80 BLZ COS ELS GUA HON NIC PAN 81 ABA BAH BBD BER CAY CUB DOM GDL HIS JAM MAR MTS NAV PUE SAB SBA STL STV TCI TRT VEN VIR 82 CLM FRG GUY SUR SWC VEN 83 BOL ECU GAL PER 84 BRA 85 ARG CLE PAR

Synonyms: hidden

= Asclepias aurantiaca Salisb.; Prodr. Stirp. Chap. Allerton 150 (1796), nom. superfl.

= Asclepias bicolor Moench; Methodus: 717 (1794), nom. superfl.

= Asclepias cubensis Wender.; Bot. Zeitung (Berlin) 1: 830 (1843)

= Asclepias curassavica f. flaviflora Tawada; J. Jap. Bot. 47(7): 203 (1972)

= Asclepias curassavica f. kentingensis F.C.Ho; Trop. Pl. Taiwan in Colour 3: 280, 355 (1982), without type

= Asclepias curassavica f. pallidiflora Griseb.; Abh. Königl. Ges. Wiss. Göttingen 24: 229 (1879)

= Asclepias curassavica var. concolor Krug & Urb.; I. Urb., Symb. Antill. 1: 389 (1899)

= Asclepias margaritacea Hoffmanns. ex Schult.; Roem. & Schult., Syst. Veg. ed. 15[bis]. 6: 86 (1820)

= Asclepias nivea var. curassavica (L.) Kuntze; Revis. Gen. Pl. 2: 418 (1891), nom. superfl.

= Asclepias syriaca Blanco; Fl. Filip. [Blanco] 204 (1837) non L.

species :

Asclepias curtissii A.Gray; Proc. Amer. Acad. Arts 19: 85 (1883)

Name: Curtiss´ milkweed

Distribution: USA (Florida)

78 USA

Conservation Status: IUCN R

Synonyms: hidden

= Asclepias aceratoides Nash; Bull. Torrey Bot. Club, 154 (1895)

= Asclepias arenicola Nash; Bull. Torrey Bot. Club, 1896: 252 (1896)

= Oxypteryx arenicola (Nash) Greene; Pittonia 3: 235 (1897)

= Oxypteryx curtissii (A.Gray) Small; Man. Southeast. Fl. 1072 (1933)

species :

Asclepias cutleri Woodson; Ann. Missouri Bot. Gard. 26: 263 (1939)

Name: Cutler´s milkweed

Distribution: USA (Arizona, Utah)

76 USA

Conservation Status: IUCN R

species :

Asclepias densiflora N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4: I. 320 (1902)

Distribution: Zimbabwe; South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, KwaZulu-Natal); Eswatini [Swaziland]

26 ZIM 27 SAF SWZ

species :

Asclepias dependens (K.Schum.) N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4: I. 352 (1903)

Distribution: Angola

26 ANG

Synonyms: hidden

= Gomphocarpus dependens K.Schum.; Bot. Jahrb. Syst. 17: 125 (1893)

species :

Asclepias depressa (Schltr.) Schltr.; J. Bot., 455 (1896)

Distribution: South Africa (Gauteng, Mpulamanga, Free State, KwaZulu-Natal, E-Cape Prov.); Lesotho

27 LES SAF

Synonyms: hidden

= Asclepias multicaulis (E.Mey.) Schltr.; Beibl. Bot. Jahrb. Syst. 54: 8 (1896), nom. illeg.

= Gomphocarpus depressus Schltr.; Bot. Jahrb. Syst. 20: Beibl. n. 51 29 (1895)

= Gomphocarpus multicaulis (E.Mey.) D.Dietr.; Syn. Pl. 2: 901 (1840)

= Lagarinthus multicaulis E.Mey.; Comm. Pl. Afr. Austr. 205 (1838)

species :

Asclepias dinteri Engl. & K.Krause; Bot. Jahrb. Syst. 45: 155 (1910)

Distribution: Namibia

27 NAM

Remarks: provisionally accepted name

species :

Asclepias disparilis N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4: 1. 680 (1908)

Distribution: South Africa (KwaZulu-Natal, E-Cape Prov.)

27 SAF

Conservation Status: IUCN V

species :

Asclepias dissona N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4: 1. 682 (1908)

Distribution: South Africa (Mpulamanga)

27 SAF

Conservation Status: IUCN I

Synonyms: hidden

= Schizoglossum capitatum Schltr.; Bot. Jahrb 20: Beibl. n. 51 15 (1895)

species :

Asclepias edentata Goyder; Kew Bull. 64(3): 378 (2009)

Distribution: Tanzania

25 TAN

species :

Asclepias elata Benth.; Pl. Hartw. 290 (1849)

Distribution: S-USA (Texas); Mexico (Aguascalientes, Chiapas, Chihuahua, Coahuila, Durango, Guanajuato, Hidalgo, Jalisco, Michoacán, Nayarit, Nuevo Leon, Oaxaca, Sonora, Tamaulipas, Veracruz); Guatemala

77 USA 79 MEX 80 GUA

Synonyms: hidden

= Asclepias glaucescens var. elata (Benth.) E.Fourn.; Ann. Sci. Nat., Bot. sér. 6, 14: 382 (1882)

= Asclepias macroura A.Gray; Proc. Amer. Acad. Arts 22: 436 (1887)

species :

Asclepias elegantula Fishbein; Novon 18(1): 43 (2008)

Distribution: Mexico (Durango, Querétaro)

79 MEX

species :

Asclepias eminens (Harv.) Schltr.; J. Bot., 453 (1896)

Distribution: Zimbabwe; South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, Free State, KwaZulu-Natal); Lesotho; Eswatini [Swaziland]

26 ZIM 27 LES SAF SWZ

Synonyms: hidden

= Stenostelma eminens (Harv.) Bullock; Kew Bull. 342 (1953)

= Gomphocarpus eminens Harv.; Thes. Cap. 2: 60. t. 195 (1863)

species :

Asclepias emoryi (Greene) Tidestr.; Proc. Biol. Soc. Wash. 48: 42 (1935)

Name: Emory´s milkweed

Distribution: USA (New Mexico, Texas); Mexico (Coahuila, Durango, Nuevo Leon, Tamaulipas)

77 USA 79 MEX

Synonyms: hidden

= Asclepias bartlettiana Woodson; Am. J. Bot. 22: 688 (1935)

= Podostemma emoryi Greene; Pittonia 3: 237 (1897)

= Podostemma leoninum Greene; Pittonia 3: 237 (1897)

species :

Asclepias engelmanniana Woodson; Ann. Missouri Bot. Gard. 28: 207 (1941)

Name: Engelmann´s milkweed

Distribution: USA (Arizona, Colorado, Iowa, Kansas, Nebraska, New Mexico, Oklahoma, Texas, Utah, Wyoming); Mexico (Coahuila, Durango, Sonora)

73 USA 74 USA 76 USA 77 USA 79 MEX

Synonyms: hidden

= Acerates auriculata Engelm. ex Torr.; Rep. U. S. Mex. Bound., Bot. [Emory] 160 (1859)

= Asclepias auriculata (Engelm. ex Torr.) Holz.; Bot. Gaz. 17: 125 (1892), nom. illeg., non Kunth

= Otaria auriculata (Engelm. ex Torr.) G.Don; Gen. Hist. 4: 144 (1837)

= Gomphocarpus auriculatus (Engelm. ex Torr.) K.Schum.; Engl. & Prantl, Nat. Pflanzenfam. 4(2): 236 (1895)

species :

Asclepias eriocarpa Benth.; Pl. Hartw. 323 (1849)

Name: Woollypod milkweed

Distribution: USA (California); Mexico (Baja California Norte)

76 USA 79 MEX

Synonyms: hidden

= Asclepias eriocarpa var. microcarpa Munz & I.M.Johnst.; Bull. Torrey Bot. Club 49: 355 (1923)

= Asclepias fremontii Torr.; Pacif. Railr. Rep. Williamson & Abbot, Bot. 6(3

= Asclepias kotolo Eastw.; Zoe 5: 86 (1900)

species :

Asclepias erosa Torr.; Bot. Mex. Bound. 162 (1859)

Name: Desert milkweed

Distribution: USA (Arizona, California, Nevada, Utah); Mexico (Baja California Norte, Sonora)

76 USA 79 MEX

Synonyms: hidden

= Asclepias demissa Greene; Leafl. Bot. Observ. Crit. 2: 231 (1912)

= Asclepias erosa var. obtusa (A.Gray) A.Gray; Syn. Fl. N. Amer. 2(1): 94 (1878)

= Asclepias leucophylla Engelm.; Am. Natural. 9: 348 (1875)

= Asclepias leucophylla var. obtusa A.Gray; S. Wats., Bot. California 1: 620 (1876)

= Asclepias obtusata Greene; Leafl. Bot. Observ. Crit. 2: 232 (1912)

= Asclepias rothrockii Greene; Leafl. Bot. Observ. Crit. 2: 232 (1912)

species :

Asclepias euphorbiifolia Engelm. ex A.Gray; Proc. Amer. Acad. Arts 16: 104 (1881)

Distribution: Mexico (Durango, San Luis Potosí)

79 MEX

species :

Asclepias exaltata L.; Amoen. Acad. 3: 404 (1753)

Name: Poke milkweed

Distribution: Canada (Ontario, Québec); USA (Alabama, Connecticut, Delaware, Georgia, Iowa, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, Wisconsin, West Virginia)

72 CDN 74 USA 75 USA 78 USA

Synonyms: hidden

= Asclepias bicknellii Vail; Bull. Torrey Bot. Club 31: 458, pl. 19 (1904)

= Asclepias nivea Sims; Bot. Mag. 29: t. 1181 (1809), nom. illeg.

= Asclepias phytolaccoides G.F.Lyon ex Pursh; Fl. Amer. Sept. 1: 180 (1813)

= Asclepias syriaca var. exaltata (L.) L.; Sp. Pl. ed. 2, 313 (1762)

species :

Asclepias expansa (E.Mey.) Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 7 (1896)

Distribution: South Africa (E-Cape Prov.)

27 SAF

Conservation Status: IUCN I

Synonyms: hidden

= Gomphocarpus expansus (E.Mey.) D.Dietr.; Syn. Pl. 2: 901 (1840)

= Lagarinthus expansus E.Mey.; Drège, Zwei Pfl. Docum. 196 (1843)

species :

Asclepias fallax (Schltr.) Schltr.; J. Bot., 455 (1896)

Distribution: South Africa (North-West Prov., Gauteng, Mpulamanga)

27 SAF

Conservation Status: IUCN R

Synonyms: hidden

= Gomphocarpus fallax Schltr.; Bot. Jahrb. Syst. 20: Beibl. n. 51 29 (1895)

species :

Asclepias fascicularis Decne.; Prodr. [A. DC.] 8: 509 (1844)

Name: Mexican whorled milkweed

Distribution: USA (California, Idaho, Nevada, Oregon, Utah, Washington State); Mexico (Baja California Norte)

73 USA 76 USA 79 MEX

Synonyms: hidden

= Asclepias macrophylla var. comosa Durand & Hilg.; J. Acad. Nat. Sci. Philadelphia, ser. 2, 3: 41 (1854)

species :

Asclepias feayi Chapm. ex A.Gray; Proc. Amer. Acad. Arts 12: 72 (1876)

Name: Florida milkweed

Distribution: USA (Florida)

78 USA

Synonyms: hidden

= Acerates feayi (Chapm. ex A.Gray) Chapm.; Bot. Gaz. 3: 12 (1878)

= Asclepias simpsonii Chapm.; Fl. South. U.S., Suppl. 2(2): 693 (1892)

= Asclepiodella feayi (Chapm. ex A.Gray) Small; Man. Southeast. Fl. 1073 (1933)

= Asclepiodora feayi (Chapm. ex A.Gray) Chapm.; Fl. S. U. S., ed. 3, 349 (1897)

species :

Asclepias fimbriata Weim.; Bot. Notiser, 378 (1935)

Distribution: S-Zimbabwe; Mozambique

26 MOZ ZIM

Conservation Status: IUCN R

Synonyms: hidden

= Trachycalymma fimbriatum (Weim.) Bullock; Kew Bull. 352 (1953)

species :

Asclepias flanaganii Schltr.; J. Bot. 34: 454 (1896)

Distribution: South Africa (E-Cape Prov.)

27 SAF

Synonyms: hidden

= Asclepias hastata (E.Mey.) Schltr.; Beibl. Bot. Jahrb. Syst. 54: 7 (1896), nom. illeg.

= Gomphocarpus asclepiaceus Schltr.; Beibl. Bot. Jahrb. Syst. 45: 7 (1894)

= Gomphocarpus geminatus Schltr.; Beibl. Bot. Jahrb. Syst. 45: 8 (1894)

= Gomphocarpus hastatus E.Mey.; Comm. Pl. Afr. Austr.: 201 (1838)

species :

Asclepias flexuosa (E.Mey. ex Decne.) Schltr.; J. Bot. 34: 453 (1896)

Distribution: South Africa (KwaZulu-Natal, E-Cape Prov.)

27 SAF

Synonyms: hidden

= Gomphocarpus flexuosus (E.Mey. ex Decne.) D.Dietr.; Syn. Plant. 2: 901 (1840)

= Gomphocarpus fragrans Schltr.; Beibl. Bot. Jahrb. Syst. 51: 30 (1895)

= Lagarinthus flexuosus E.Mey. ex Decne.; Prodr. [A. DC.] 8: 556 (1844)

species :

Asclepias foliosa (K.Schum.) Hiern; Cat. Welw. Afr. Pl. 1: 688 (1898)

Distribution: Benin; Cameroon; D.R.Congo [Zaire]; Angola; Zambia; Malawi; Mozambique

22 BEN 23 CMN ZAI 26 ANG MLW MOZ ZAM

Synonyms: hidden

= Asclepias endotrachys Schltr.; Bot. Jahrb. Syst. 51: 137 (1913)

= Asclepias lepida S.Moore; J. Bot. 50: 344 (1912)

= Asclepias minuta A.Chev.; Bull. Soc. Bot. France 61(Mém. 8e): 272 (1917)

= Asclepias modesta N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4(1): 348 (1903)

= Asclepias modesta var. foliosa N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4(1): 349 (1902)

= Gomphocarpus foliosus K.Schum.; Bot. Jahrb. Syst. 17: 126 (1893)

= Trachycalymma foliosum (K.Schum.) Goyder; Kew Bull. 56(1): 153 (2001)

species :

Asclepias fournieri Woodson; Ann. Missouri Bot. Gard. 28: 207 (1941)

Distribution: Mexico (Ciudad de México, Chihuahua, Hidalgo, Jalisco, México State, Michoacán, Nayarit, Oaxaca, Puebla, Querétaro, Sonora)

79 MEX

Synonyms: hidden

= Acerates gomphocarpoides Decne.; Ann. Sci. Nat, ser. II. 9: 323 (1838), non Benth. & Hook.

= Asclepias grayi L.D.Benson; Amer. J. Bot. 28: 363 (1941)

= Asclepiodora gomphocarpoides (Decne.) E.Fourn.; Ann. Sci. Nat., Bot. sér. 6, 14: 369 (1882)

= Gomphocarpus palmeri A.Gray; Proc. Am. Acad 22: 436 (1887)

species :

Asclepias fulva N.E.Br.; Bull. Misc. Inform. Kew 1895: 254 (1895)

Distribution: Uganda; Kenya; Tanzania; Zambia; Zimbabwe; South Africa (Limpopo, Gauteng, Mpulamanga, KwaZulu-Natal, E-Cape Prov.); Eswatini [Swaziland]

25 KEN TAN UGA 26 ZAM ZIM 27 SAF SWZ

Synonyms: hidden

= Asclepias calceolus S.Moore; J. Bot., 312 (1903)

= Asclepias dregeana Schltr.; J. Bot. 33: 337 (1895), nom. nov. superfl.

= Asclepias dregeana var. calceolus (S.Moore) N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 697 (1908)

= Asclepias dregeana var. sordida N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 697 (1908)

= Asclepias rubicunda Schltr.; J. Bot. 32: 336 (1895)

= Asclepias viridiflora (E.Mey.) Goyder; Kew Bull. 52: 247 (1997) (non Raf. 1808)

= Cynanchum fuscum (Lour.) Schult.; Roem. & Schult., Syst. Veg. ed. 15[bis]. 6: 111 (1820)

= Gomphocarpus viridiflorus (E.Mey.) Decne.; Prodr. [A. DC.] 8: 561 (1844), nom. illeg.

= Pachycarpus fulvus (N.E.Br.) Bullock; Kew Bull. 334 (1953)

= Pachycarpus viridiflorus E.Mey.; Comm. Pl. Afr. Austr. 214 (1838)

= Xysmalobium viridiflorum (E.Mey.) D.Dietr.; Syn. Pl. 2: 902 (1840)

species :

Asclepias galeottii E.Fourn.; Bull. Soc. Bot. Fr. 14: 250 (1867)

Distribution: Mexico (Oaxaca)

79 MEX

species :

Asclepias gentryi Standl.; Publ. Field Mus. Nat. Hist., Chicago, Bot. Ser. 22: 45 (1940)

Distribution: Mexico (Chihuahua, Sonora)

79 MEX

species :

Asclepias gibba (E.Mey.) Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 7 (1896)

Distribution: South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, Free State, KwaZulu-Natal, E-Cape Prov.); Lesotho; Eswatini [Swaziland]

27 LES SAF SWZ

Synonyms: hidden

= Asclepias oxytropis (Turcz.) Schltr.; J. Bot. 34: 454 (1896)

= Gomphocarpus gibbus (E.Mey.) D.Dietr.; Syn. Pl. 2: 900 (1840)

= Gomphocarpus oxytropis Turcz.; Bull. Soc. Imp. Naturalistes Moscou 21(I): 259 (1848)

= Lagarinthus gibbus E.Mey.; Comm. Pl. Afr. Austr. 204 (1838)

variant :

var. media N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 684 (1908)

Distribution: South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, Free State, KwaZulu-Natal); Lesotho; Eswatini [Swaziland]

27 LES SAF SWZ

species :

Asclepias glaucescens Kunth; Nov. Gen. et Sp. 3: 290. t. 227 (1819)

Name: Nodding milkweed

Distribution: USA (Arizona, New Mexico, Texas); Mexico (Aguascalientes, Chiapas, Colima, Durango, Guerrero, Hidalgo, Jalisco, México State, Michoacán, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Querétaro, Sinaloa, Sonora, Tlaxcala, Veracruz); Guatemala; El Salvador; Nicaragua; Costa Rica

76 USA 77 USA 79 MEX 80 COS ELS GUA NIC

Synonyms: hidden

= Asclepias glaberrima Sessé & Moc.; Naturaleza (Mexico City), ser. 2, 1(App.): 43 (1888)

= Asclepias plumieriifolia Ram.Goyena; Fl. Nicarag. 2: 658 (1911)

= Asclepias polyphylla Brandegee; Univ. Calif. Publ. Bot. 6: 371 (1917)

= Asclepias sullivantii Torr.; Bot. Mex. Bound. 163 (1859)

species :

Asclepias gordon-grayae Nicholas; Bothalia 17(1): 17 (1987)

Distribution: South Africa (KwaZulu-Natal)

27 SAF

Conservation Status: IUCN V

species :

Asclepias graminifolia (Wild) Goyder; Kew Bull. 64(3): 383 (2009)

Distribution: Zimbabwe

26 ZIM

Conservation Status: IUCN I

Synonyms: hidden

= Pachycarpus graminifolius Wild; Kirkia 4: 148 (1964)

= Trachycalymma graminifolium (Wild) Goyder; Kew Bull. 56(1): 141 (2001)

species :

Asclepias grandirandii Goyder; Kew Bull. 64(3): 394 (- 395) (2009)

Distribution: SE-D.R.Congo [Zaire]; SW-Tanzania; Zambia; Malawi

23 ZAI 25 TAN 26 MLW ZAM

species :

Asclepias graogramanii L.O.Alvarado, M.G.Chávez & J.A.Álvarez; Phytotaxa 592(3): 261 (2023)

Distribution: Mexico (Jalisco, Nayarit)

79 MEX

species :

Asclepias hallii A.Gray; Proc. Amer. Acad. Arts 12: 69 (1877)

Name: Hall´s milkweed

Distribution: USA (Arizona, Colorado, New Mexico, Nevada, Utah, Wyoming)

73 USA 76 USA 77 USA

Synonyms: hidden

= Asclepias curvipes A.Nelson; Bull. Torrey Bot. Club 28: 229 (1901)

= Asclepias lonchophylla Greene; Leafl. Bot. Observ. Crit. 2: 231 (1912)

species :

Asclepias hirtella (Pennell) Woodson; Ann. Missouri Bot. Gard. 28: 207 (1941)

Name: Green milkweed

Distribution: Canada (Ontario); USA (Alabama, Arkansas, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Michigan, Minnesota, Missouri, Mississippi, Ohio, Oklahoma, Tennessee, Wisconsin, West Virginia)

72 CDN 74 USA 75 USA 78 USA

Synonyms: hidden

= Acerates hirtella Pennell; Bull. Torr. Bot. Cl. 46: 184 (1919)

= Asclepias longifolia subsp. hirtella (Pennell) J.Farmer & C.R.Bell; Phytologia 57(6): 380 (1985)

= Asclepias longifolia var. hirtella (Pennell) B.L.Turner; Phytologia 91(2): 310 (2009)

= Oligoron longifolium var. hirsutum Raf.; New Fl. 4: 60 (1838)

species :

Asclepias humilis (E.Mey.) Schltr.; Bot. Jahrb. Syst. 20: Beibl. n. 51 26 (1895)

Distribution: South Africa (Free State, KwaZulu-Natal, E-Cape Prov.); Lesotho

27 LES SAF

Synonyms: hidden

= Gomphocarpus humilis (E.Mey.) Decne.; Prodr. [A. DC.] 8: 561 (1844)

= Pachycarpus humilis E.Mey.; Comm. Pl. Afr. Austr. 212 (1838)

= Xysmalobium humile (E.Mey.) D.Dietr.; Syn. Pl. 2: 902 (1840)

species :

Asclepias humistrata Walter; Fl. Carol. 105 (1788)

Name: Pinewoods milkweed

Distribution: USA (Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina)

78 USA

species :

Asclepias hypoleuca (A.Gray) Woodson; Ann. Missouri Bot. Gard. 28: 206 (1941)

Name: Mahogany milkweed

Distribution: USA (Arizona, New Mexico); Mexico (Chihuahua, Sonora, Zacatecas)

76 USA 77 USA 79 MEX

Synonyms: hidden

= Gomphocarpus hypoleucus A.Gray; Proc. Amer. Acad. Arts 17: 222 (1881 publ. 1882)

species :

Asclepias inaequalis Goyder; Kew Bull. 64(3): 387 (2009)

Distribution: Tanzania

25 TAN

species :

Asclepias incarnata L.; Sp. Pl. 215 (1753)

subspecies :

subsp. incarnata

Name: Swamp milkweed

Distribution: Canada (Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Isl., Québec); USA (Alabama, Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Iowa, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oklahoma, Pennsylvania, South Dakota, Tennessee, Texas, Utah, Virginia, Vermont, Wisconsin, West Virginia, Wyoming); Mexico (Chihuahua, Coahuila)

71 CDN 72 CDN 73 USA 74 USA 75 USA 76 USA 77 USA 78 USA 79 MEX

Synonyms: hidden

= Acerates incarnata (L.) Decne.; Prodr. [A. DC.] 8: 523 (1844)

= Asclepias albiflora Raf.; New Fl. 4: 62 (1838)

= Asclepias amoena Brongn.; Ann. Sci. Nat., ser. I. 24: 275. I. 13 (1831)

= Asclepias incarnata f. albiflora (Raf.) A.Heller; Bull. Torrey Bot. Club 21: 24 (1894)

= Asclepias incarnata f. candida Fernald; Rhodora 41: 446 (1939)

= Asclepias incarnata f. rosea B.Boivin; Naturaliste Canad. 94: 521 (1967)

= Asclepias incarnata var. glabra Eaton & Wright; Man. Bot., ed. 8: 139 (1840)

= Asclepias incarnata var. longifolia A.Gray; Proc. Amer. Acad. Arts 12: 67 (1876)

= Asclepias maritima Raf.; Amer. Monthly Mag. & Crit. Rev. 2(2): 119 (1817), et Autikon Bot. 178 (1840), nom. illeg.

= Asclepias verecunda Salisb.; Prodr. Stirp. Chap. Allerton 150 (1796)

subspecies :

subsp. pulchra (Ehrh. ex Willd.) Woodson; Ann. Missouri Bot. Gard. 41: 53 (1954)

Name: Swamp milkweed

Distribution: USA (Connecticut, District of Columbia, Delaware, Florida, Georgia, Kentucky, Massachusetts, Maryland, Maine, Michigan, North Carolina, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, West Virginia)

75 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias incarnata f. pulchra (Ehrh. ex Willd.) Voss; Vilm. Blumengärtn. ed. 3. 1: 664 (1894)

= Asclepias incarnata var. neoscotica Fernald; Rhodora 23: 288 (1922)

= Asclepias incarnata var. pulchra (Ehrh. ex Willd.) Pers.; Syn. Pl. [Pers.] 1: 276 (1805)

= Asclepias pulchra Ehrh. ex Willd.; Enum. Pl. [Willd.] 1: 278 (1809)

= Asclepias pulchra f. albiflora House; Bull. New York State Mus. Nat. Hist. 243-244: 61 (1923)

species :

Asclepias involucrata Engelm. ex Torr.; Bot. Mex. Bound. 163 (1859)

Name: Dwarf milkweed

Distribution: USA (Arizona, Colorado, Kansas, New Mexico, Oklahoma, Texas, Utah); Mexico (Chihuahua, Coahuila, Durango, Sonora)

73 USA 74 USA 76 USA 77 USA 79 MEX

Synonyms: hidden

= Asclepias macrosperma Eastw. ex Vail; Bull. Torrey Bot. Club, 172 (1898)

= Asclepias involucrata var. tomentosa Eastw.; Zoe 4: 120 (1893)

species :

Asclepias jaliscana Rob.; Proc. Amer. Acad. Arts 29: 318 (1894)

Distribution: Mexico (Aguascalientes, Chiapas, Chihuahua, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, México State, Michoacán, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Querétaro, Sinaloa, Sonora, Tabasco, Tamaulipas, Veracruz); Guatemala; El Salvador

79 MEX 80 ELS GUA

Synonyms: hidden

= Asclepias setosa Benth.; Pl. Hartw.: 24 (1839), nom. illeg.

species :

Asclepias jorgeana Fishbein & S.P.Lynch; Novon 9(2): 179 (1999)

Distribution: Mexico (Chihuahua, Durango, Guanajuato, Querétaro, Sonora)

79 MEX

species :

Asclepias kamerunensis Schltr.; Bot. Jahrb. Syst. 51: 137 (1913)

Distribution: Cameroon; Gabon

23 CMN GAB

Conservation Status: IUCN EN (Cameroon)

Synonyms: hidden

= Gomphocarpus kamerunensis (Schltr.) Bullock; Kew Bull. 340 (1953)

species :

Asclepias labriformis M.E.Jones; Proc. Calif. Acad., ser. II. 5: 708 (1895)

Name: Utah milkweed

Distribution: USA (Utah)

76 USA

Conservation Status: IUCN V

species :

Asclepias lanceolata Walter; Fl. Carol. 105 (1788)

Name: Fewflower milkweed

Distribution: USA (Alabama, Delaware, Florida, Georgia, Louisiana, Maryland, Mississippi, North Carolina, New Jersey, South Carolina, Tennessee, Texas, Virginia)

75 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias lanceolata f. flaviflora Fernald; Rhodora 45: 458 (1943)

= Asclepias lanceolata var. paupercula (Michx.) Fernald; Rhodora 37: 438 (1935)

= Asclepias paupercula Michx.; Fl. Bor. Amer. 1: 118 (1803)

= Asclepias serpentaria Raf.; Fl. Ludov.: 52 (1817)

= Otanema lanceolata (Walter) Raf.; New Fl. Am. 4: 61 (1826)

species :

Asclepias langsdorffii E.Fourn.; Mart., Fl. Bras. 6(4): 203 (1753)

Distribution: WC-Brazil (Mato Grosso, Brasilia Distrito Federal); SE-Brazil (Minas Gerais, Sao Paulo); S-Brazil (Paraná, Santa Catarina); Paraguay (Canindeyu)

84 BRA 85 PAR

species :

Asclepias lanuginosa Nutt.; Gen. Am. 1: 168 (1818)

Name: Sidecluster milkweed

Distribution: Canada (Manitoba); USA (Iowa, Illinois, Kansas, Minnesota, North Dakota, Nebraska, South Dakota, Wisconsin)

71 CDN 74 USA 75 USA

Synonyms: hidden

= Acerates lanuginosa (Nutt.) Decne.; Prodr. [A. DC.] 8: 523 (1844)

= Asclepias nuttalliana Torr.; Ann. Lyceum Nat. Hist. New York 2: 218 (1827), nom. illeg.

= Polyotus lanuginosus (Nutt.) Nutt.; Trans. Amer. Philos. Soc., n.s. 5: 200 (1835)

species :

Asclepias latifolia (Torr.) Raf.; Atl. J. 146 (1832)

Name: Broadleaf milkweed

Distribution: USA (Arizona, California, Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Utah)

73 USA 74 USA 76 USA 77 USA

Synonyms: hidden

= Asclepias jamesii Torr.; Emory, Rep. U.S. Mex. Bound. 2(1): 162 (1859), nom. superfl.

= Asclepias obtusifolia var. latifolia Torr.; Ann. Lyceum Nat. Hist. New York 2: 217 (1827)

= Otanema latifolia (Torr.) Raf.; New Fl. 4: 61 (1838)

= Otanema latifolia var. retusa Raf.; New Fl. 4: 61 (1838)

species :

Asclepias lemmonii A.Gray; Proc. Amer. Acad. Arts 19: 85 (1883)

Name: Lemmon´s milkweed

Distribution: USA (Arizona); Mexico (Chihuahua, Durango, Jalisco, Sonora)

76 USA 79 MEX

Conservation Status: IUCN R

Synonyms: hidden

= Asclepias chapalensis Brandegee; Univ. Calif. Publ. Bot. 6: 358 (1916)

species :

Asclepias leptopus I.M.Johnst.; Proc. Calif. Acad. Sci., ser. IV. 12: 1127 (1924)

Distribution: Mexico (Chihuahua, Sinaloa, Sonora)

79 MEX

Synonyms: hidden

= Asclepias suffrutex Standl.; Publ. Field Mus. Nat. Hist., Chicago, Bot. Ser. 22: 45 (1940)

species :

Asclepias linaria Cav.; Ic. 1: 42. t. 57 (1791)

Name: Pineneedle milkweed

Distribution: USA (Arizona, California, New Mexico); Mexico (Aguascalientes, Ciudad de México, Chihuahua, Coahuila, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, México State, Michoacán, Morelos, Nuevo Leon, Oaxaca, Puebla, Querétaro, San Luis Potosí, Sonora, Tamaulipas, Tlaxcala, Veracruz, Zacatecas)

76 USA 77 USA 79 MEX

Synonyms: hidden

= Asclepias pinifolia Greene; Torrey Bot. Club 8: 5 (1881)

species :

Asclepias linearis Scheele; Linnaea 21: 758 (1848)

Name: Slim milkweed

Distribution: USA (Maryland, Texas)

77 USA 78 USA

Synonyms: hidden

= Acerates linearis (A.Gray) Lunell; Amer. Midl. Naturalist 4: 509 (1916)

= Acerates viridiflora var. linearis A.Gray; Syn. Fl. N. Amer. 2(1): 99 (1878)

= Asclepias verticillata var. linearis (Scheele) Pollard; Bull. Torrey Bot. Club 24: 256 (1897)

= Asclepias viridiflora var. linearis (A.Gray) Fernald; Rhodora 48: 208 (1946)

species :

Asclepias longifolia Michx.; Fl. Bor. Amer. 1: 116 (1803)

Name: Longleaf milkweed

Distribution: USA (Alabama, Arkansas, Delaware, Florida, Georgia, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Texas, Virginia, West Virginia)

75 USA 77 USA 78 USA

Synonyms: hidden

= Acerates delticola Small; Man. Southeast. Fl. 1067 (1933)

= Acerates longifolia (Michx.) Elliott; Sketch 1: 317 (1817)

= Asclepias incarnata var. longifolia (Michx.) A.Gray; Proc. Amer. Acad. Arts 12: 67 (1876)

= Asclepias incarnata Walter; Fl. Carol. 106 (1788) non L.

= Gomphocarpus longifolius (Michx.) Schum.; Engl. & Prantl, Natürl. Pflanzenfam. IV(2): 236 (1895)

= Gomphocarpus longifolius (Michx.) Spreng.; Syst. 1: 849 (1824)

= Oligoron longifolium (Michx.) Raf.; New Fl. 4: 60 (1838)

= Polyotus longifolius (Michx.) Nutt.; Trans. Amer. Philos. Soc., n.s. 5: 200 (1835)

species :

Asclepias longirostra Goyder; Kew Bull. 64(3): 380 (2009)

Distribution: Zambia; Malawi

26 MLW ZAM

species :

Asclepias longissima N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4: I. 338 (1903)

Distribution: Kenya; Tanzania; Zambia; Mozambique

25 KEN TAN 26 MOZ ZAM

Synonyms: hidden

= Gomphocarpus longissimus (N.E.Br.) K.Schum.; Engl. Bot. Jahrb. 30: 382 (1901)

species :

Asclepias lynchiana Fishbein; Novon 7(3): 234 (1997), nom. nov.

Distribution: Mexico (Guerrero, Jalisco, México State, Michoacán, Morelos, Oaxaca, Puebla)

79 MEX

Synonyms: hidden

= Asclepias grandiflora E.Fourn.; Ann. Sci. Nat., Bot., sér. 6, 14: 379 (1882), nom. illeg.

= Asclepias insignis (Brandegee) Woodson; Ann. Missouri Bot. Gard. 28: 207 (1941), nom. illeg.

= Asclepiodora insignis Brandegee; Zoe 5: 253 (1908)

species :

Asclepias macropus (Schltr.) Schltr.; J. Bot., 456 (1896)

Distribution: South Africa (Mpulamanga, Free State, KwaZulu-Natal, E-Cape Prov.)

27 SAF

Synonyms: hidden

= Gomphocarpus macropus Schltr.; J. Bot. 32: 353 (1894)

species :

Asclepias macrotis Torr.; Bot. Mex. Bound. 164. t. 45 (1859)

Name: Longhood milkweed

Distribution: USA (Arizona, Colorado, New Mexico, Oklahoma, Texas); Mexico (Chihuahua, Coahuila, ?Sonora)

73 USA 74 USA 76 USA 77 USA 79 MEX

species :

Asclepias masonii Woodson; Ann. Missouri Bot. Gard. 41: 145 (1954)

Distribution: Mexico (Baja California Sur: Santa Margarita Isl.)

79 MEX

species :

Asclepias mcvaughii Woodson; Ann. Missouri Bot. Gard. 41: 197 (1954)

Distribution: Mexico (Guerrero, Jalisco)

79 MEX

species :

Asclepias meadii Torr. ex A.Gray; Man. Bot. U. St. ed. II. Add. 704 (1856)

Name: Mead´s milkweed

Distribution: USA (Iowa, Illinois, Indiana, Kansas, Missouri, Wisconsin)

74 USA 75 USA

Conservation Status: IUCN V

species :

Asclepias melantha Decne.; Prodr. [A. DC.] 8: 570 (1844)

Distribution: Mexico (Oaxaca)

79 MEX

Synonyms: hidden

= Asclepias laxiflora (Benth.) Decne.; Prodr. [A. DC.] 8: 571 (1844), nom. illeg.

= Otaria laxiflora Benth.; Pl. Hartw.: 67 (1840)

species :

Asclepias meliodora (Schltr.) Schltr.; J. Bot., 455 (1896)

Distribution: Mozambique; Botswana; South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, KwaZulu-Natal); Eswatini [Swaziland]

26 MOZ 27 BOT SAF SWZ

Synonyms: hidden

= Asclepias meliodora var. brevicoronata N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 700 (1908)

= Gomphocarpus meliodorus Schltr.; Bot. Jahrb. Syst. 20: Beibl. n. 51 33 (1895)

= Schizoglossum theileri S.Moore; J. Bot. 59: 231 (1921)

species :

Asclepias mellodora A.St.-Hil.; Pl. Rem. Brazil 227 (1824)

Distribution: Bolivia (Beni, Chuquisaca, Cochabamba, La Paz, Santa Cruz, Tarija); N-Brazil (Pará); NE-Brazil (Bahia, Sergipe); WC-Brazil (Mato Grosso, Goiás, Brasilia Distrito Federal, Mato Grosso do Sul); SE-Brazil (Minas Gerais, Espirito Santo, Sao Paulo); S-Brazil (Paraná, Rio Grande do Sul, Santa Catarina); Paraguay (Amambay, Canindeyu, Cordillera, Guaira, Itapua, Paraguari, San Pedro); Uruguay (Artigas, Cerro Largo, Colonia, Florida Prov., Lavalleja, Montevideo, Paysandu, Rio Negro, Rocha, Salto, San Jose, Soriano, Tacuarembo); Argentina (Buenos Aires, Chaco, Cordoba, Corrientes, Entre Rios, Formosa, Jujuy, La Pampa, Misiones, Rio Negro, Salta, Santiago del Estero, Santa Fe, San Luis, Tucuman)

83 BOL 84 BRA 85 ARG PAR URU

Synonyms: hidden

= Asclepias campestris f. rosea Stuck. ex Seckt; Revista Univ. Nac. Cordoba 17(5-6): 68 (1930)

= Asclepias campestris var. angustifolia Kuntze; Revis. Gen. Pl. 3[3]: 199 (1898)

= Asclepias campestris var. schlechteri Kuntze; Revis. Gen. Pl. 3[3]: 199 (1898)

= Asclepias citrifolia Hook. & Arn.; Hook. J. Bot. 1: 295 (1834)

= Asclepias citrifolia var. angustifolia Hook. & Arn.; J. Bot. (Hooker) 1: 295 (1835)

= Asclepias curassavica Griseb.; Gött. Abh. 19: 159 (1874) non L.

= Asclepias curupi E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 384 (1882)

= Asclepias hassleriana Malme; Bull. Herb. Boiss., ser. II. 3: 63 (1902)

= Asclepias jangadensis S.Moore; Trans. Linn. Soc., ser. II. 4: 398 (1895)

= Asclepias marginata var. bodenbenderi Kuntze; Revis. Gen. Pl. 3[3]: 199 (1898)

= Asclepias mellodora var. minor A.St.-Hil.; Hist. Pl. Remarq. Bresil 1: 229 (1824)

= Asclepias mellodora var. multinervis (E.Fourn.) Bollw.

= Asclepias montevidensis Spreng. ex E.Fourn.; Mart., Fl. Bras. 6(4): 202 (1885)

= Asclepias nervosa Decne.; Prodr. [A. DC.] 8: 568 (1844)

= Asclepias papillosa Silveira; Fl. Serras Mineiras, 10 (1908)

= Asclepias subulata Larrañaga; Escritos D. A. Larrañaga 2: 98 (1923), nom. illeg.

= Asclepias umbellata Vell.; Fl. Flum. 118. 3: t. 66 (1829)

species :

Asclepias mexicana Cav.; Ic. 1: 42. t. 58 (1791)

Distribution: Mexico (Ciudad de México, Coahuila, Guanajuato, México State, Michoacán, Nuevo Leon, Oaxaca, Puebla, San Luis Potosí, Tamaulipas, Veracruz)

79 MEX

Synonyms: hidden

= Asclepias macrophylla Nutt.; J. Acad. Nat. Sci. Philadelphia, ser. 2, 1: 180 (1847), nom. illeg.

= Asclepias verticillata var. mexicana (Cav.) E.Fourn.; Ann. Sci. Nat., Bot., sér. 6, 14: 375 (1882)

species :

Asclepias meyeriana (Schltr.) Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 8 (1896)

Distribution: South Africa (North-West Prov., Gauteng, Free State, KwaZulu-Natal, N-Cape Prov., E-Cape Prov.); Lesotho; Eswatini [Swaziland]

27 LES SAF SWZ

Synonyms: hidden

= Gomphocarpus meyerianus Schltr.; Bot. Jahrb. Syst. 20: Beibl. n. 51 33 (1895)

= Lagarinthus revolutus var. minor E.Mey.; Comm. Pl. Afr. Austr. 205 (1838)

species :

Asclepias michauxii Decne.; Prodr. [A. DC.] 8: 569 (1844)

Name: Michaux´s milkweed

Distribution: USA (Alabama, Florida, Georgia, Louisiana, Mississippi, South Carolina)

78 USA

Synonyms: hidden

= Asclepias angustifolia Elliott; Sketch Bot. S. Carolina 1: 385 (1817), nom. illeg.

= Asclepias angustifolia Schult.; Roem. & Schult., Syst. Veg. ed. 15[bis]. 6: 70 (1820), nom. illeg.

= Asclepias suaveolens Leconte ex Decne.; Prodr. [A. DC.] 8: 569 (1844)

= Oligoron tenuifolium Raf.; New Fl. 4: 60 (1838)

species :

Asclepias minor (S.Moore) Goyder; Kew Bull. 64(3): 392 (2009)

Distribution: Angola; Zambia; Zimbabwe

26 ANG ZAM ZIM

Synonyms: hidden

= Odontostelma minus S.Moore; J. Bot. 50: 363 (1912)

= Odontostelma welwitschii Rendle; J. Bot. 32: 161 t. 344 (1894)

= Schizoglossum welwitschii (Rendle) N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4: I. 365 (1903)

species :

Asclepias minutiflora (Goyder) Goyder; Kew Bull. 64(3): 384 (2009)

Distribution: Ethiopia

24 ETH

Synonyms: hidden

= Trachycalymma minutiflorum Goyder; Kew Bull. 56(1): 148 (2001)

species :

Asclepias minutissima Goyder; PhytoKeys 232: 148 (2023)

Distribution: Angola; Zambia

26 ANG ZAM

species :

Asclepias mirifica Woodson; Ann. Missouri Bot. Gard. 41: 188 (1954)

Distribution: Mexico (Chihuahua, Sonora)

79 MEX

species :

Asclepias montevaga M.Glen, Nicholas & Bester; Phytotaxa 202(3): 233 (2015), nom. nov.

Distribution: South Africa (KwaZulu-Natal); Lesotho

27 LES SAF

Conservation Status: IUCN R

Synonyms: hidden

= Asclepias xysmalobioides Hilliard & B.L.Burtt; Notes Roy. Bot. Gard. Edinburgh 43(2): 193 (1986)

species :

Asclepias monticola N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 700 (1908)

Distribution: South Africa (E-Cape Prov.)

27 SAF

Conservation Status: IUCN R

species :

Asclepias mtorwiensis Goyder; Kew Bull. 64(3): 391 (- 392) (2009)

Distribution: Tanzania

25 TAN

species :

Asclepias multiflora N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 713 (1908)

Distribution: South Africa

27 SAF

Synonyms: hidden

= Gomphocarpus multiflorus Decne.; Prodr. [A. DC.] 8: 560 (1844)

species :

Asclepias nana I.Verd.; Bull. Misc. Inform. Kew 1924: 258 (1924)

Distribution: South Africa (Limpopo)

27 SAF

Conservation Status: IUCN I

species :

Asclepias navicularis (E.Mey.) Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 8 (1896)

Distribution: South Africa (E-Cape Prov.)

27 SAF

Synonyms: hidden

= Gomphocarpus navicularis (E.Mey.) D.Dietr.; Syn. Pl. 2: 901 (1840)

= Lagarinthus navicularis E.Mey.; Comm. Pl. Afr. Austr. 204 (1838)

species :

Asclepias nivea L.; Sp. Pl. 215 (1753)

Name: Algodoncillo blanco, Platanillo, Platanillo blanco, Caribbean milkweed

Distribution: Cuba; Jamaica; Dominican Republic; Haiti; Puerto Rico

81 CUB HIS JAM PUE

Synonyms: hidden

= Asclepias alboaurantiaca Jacq.; Fragm. Bot.: 86 (1809)

= Asclepias nivea var. flava Kuntze; Revis. Gen. Pl. 2: 418 (1891)

= Asclepias nivea var. intermedia Schltr.; Urban, Symb. Antill. 1: 244 (1899)

species :

Asclepias nummularia Torr.; Bot. Mex. Bound. 163. t. 45 (1859)

Name: Tufted milkweed

Distribution: USA (Arizona, New Mexico, Texas); Mexico (Chihuahua, Coahuila, Durango, Guanajuato, San Luis Potosí, Sonora)

76 USA 77 USA 79 MEX

species :

Asclepias nummularioides W.D.Stevens; Phytologia 53(6): 401 (1983)

Distribution: Mexico (Guanajuato, Jalisco, Mexico State, San Luis Potosi)

79 MEX

species :

Asclepias nuttii N.E.Br.; Bull. Misc. Inform. Kew 1898: 308 (1898)

Distribution: SW-Tanzania; Malawi

25 TAN 26 MLW

Synonyms: hidden

= Stathmostelma nuttii (N.E.Br.) Bullock; Kew Bull. 8: 55 (1953)

species :

Asclepias nyctaginifolia A.Gray; Proc. Amer. Acad. Arts 12: 69 (1877)

Name: Mojave milkweed

Distribution: USA (Arizona, California, New Mexico, Nevada)

76 USA 77 USA

Synonyms: hidden

= Asclepias wrightii Greene; Proc. Amer. Acad. Arts 16: 102 (1881)

= Podostemma nyctaginifolium (A.Gray) Greene; Pittonia 3: 237 (1897)

species :

Asclepias obovata Elliott; Sketch, 321 (1817)

Name: Pineland milkweed

Distribution: USA (Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, Oklahoma, South Carolina, Texas)

74 USA 77 USA 78 USA

Synonyms: hidden

= Acerates obovata (Elliott) Eaton; Man. Bot. North America. ed. 6, 3 (1833)

= Asclepias viridiflora var. obovata (Elliott) Torr.; Fl. N. Middle United States 1: 284 (1824)

= Polyotus obovatus (Elliott) Nutt.; Trans. Am. Phil. Soc. N. S. 5: 201 (1837)

species :

Asclepias occidentalis Goyder; Kew Bull. 64(3): 385 (2009)

Distribution: Gabon; Congo [Brazzaville]; D.R.Congo [Zaire]

23 CON GAB ZAI

species :

Asclepias oenotheroides Cham. & Schltdl.; Linnaea 5: 123 (1830)

Name: Zizotes milkweed

Distribution: USA (Colorado, Louisiana, New Mexico, Oklahoma, Texas); Mexico (Aguascalientes, Campeche, Chiapas, Chihuahua, Coahuila, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, México State, Michoacán, Morelos, Nuevo Leon, Oaxaca, Puebla, Querétaro, Quintana Roo, San Luis Potosí, Sonora, Tabasco, Tamaulipas, Veracruz, Yucatán ); Guatemala; El Salvador; Honduras; Nicaragua; Costa Rica

73 USA 74 USA 77 USA 78 USA 79 MEX 80 COS ELS GUA HON NIC

Synonyms: hidden

= Asclepias brevicornu Scheele; Linnaea 21: 756 (1848)

= Asclepias lindheimeri Engelm. & A.Gray; G. Engelmann et al. , Pl. Lindheim. 2: 250 (1850)

= Asclepias longicornu Benth.; Pl. Hartw. 24 (1840)

= Podostemma australe Greene; Pittonia 3: 238 (1897)

= Podostemma helleri Greene; Pittonia 3: 236 (1897)

= Podostemma lindheimeri (Engelm. & A.Gray) Greene; Pittonia 3: 236 (1897)

= Podostemma longicornu (Benth.) Greene; Pittonia 3: 236 (1897)

species :

Asclepias oreophila Nicholas ex Hilliard & B.L.Burtt; Notes Roy. Bot. Gard. Edinburgh 43(2): 192 (1986)

Distribution: South Africa (KwaZulu-Natal, E-Cape Prov.); Lesotho

27 LES SAF

Conservation Status: IUCN R

species :

Asclepias otarioides E.Fourn.; Ann. Sci. Nat., Bot. sér. 6, 14: 373 (1882)

Distribution: Mexico (Ciudad de México, Coahuila, Durango, Guanajuato, Hidalgo, Jalisco, México State, Michoacán, Nuevo Leon, Oaxaca, Querétaro, San Luis Potosí, Tamaulipas, Tlaxcala, Veracruz, Zacatecas)

79 MEX

species :

Asclepias ovalifolia Decne.; Prodr. [A. DC.] 8: 567 (1844)

Name: Oval-leaf milkweed

Distribution: Canada (Alberta, British Columbia, Manitoba, Ontario, Saskatchewan); USA (Iowa, Illinois, Michigan, Minnesota, Montana, North Dakota, South Dakota, Wisconsin, Wyoming)

71 CDN 72 CDN 73 USA 74 USA 75 USA

Synonyms: hidden

= Asclepias nuttalliana A.Gray; Man. Bot. U. St. ed. II. 352, 704 (1856)

= Asclepias ovalifolia f. verticillifolia D.Löve & J.-P.Bernard; Svensk Bot. Tidskr. 53: 420 (1959)

species :

Asclepias ovata M.Martens & Galeotti; Bull. Acad. Brux. 11: 363 (1842)

Distribution: Mexico (Ciudad de México, Chihuahua, Colima, Durango, Guerrero, Hidalgo, Jalisco, México State, Michoacán, Morelos, Nayarit, Querétaro, Sinaloa, Sonora, Tamaulipas, Veracruz)

79 MEX

Synonyms: hidden

= Asclepias amoena Ruiz & Pav. ex Hemsl.; Biol. Centr. Am. Bot. 2: 325 (1882)

= Asclepias neglecta Hemsl.; Biol. Centr. Am. Bot. 2: 325 (1882)

species :

Asclepias palustris (K.Schum.) Schltr.; J. Bot. 33: 336 (1895)

Distribution: Cameroon; Angola; Zambia; Malawi; Zimbabwe; Mozambique

23 CMN 26 ANG MLW MOZ ZAM ZIM

Synonyms: hidden

= Asclepias cristata S.Moore; J. Bot. 50: 343 (1912), non Gomphocarpus cristatus Decne.

= Gomphocarpus cristatus Decne.; Ann. Sci. Nat., Bot. sér. 2, 9: 325 (1838), non Asclepias cristata S. Moore 1912

= Gomphocarpus palustris K.Schum.; Bot. Jahrb. Syst. 17: 127 (1893), et in Engl. Pflanzenw. Ost-Afr. A 115 (1895)

= Trachycalymma cristatum (Decne.) Bullock; Kew Bull. 8(3): 349 (1953)

species :

Asclepias patens N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4: 1. 674 (1908)

Distribution: South Africa (E-Cape Prov.)

27 SAF

Conservation Status: IUCN V

species :

Asclepias pedicellata Walter; Fl. Carol. 106 (1788)

Name: Savannah milkweed

Distribution: USA (Florida, Georgia, North Carolina, South Carolina)

78 USA

Synonyms: hidden

= Anthanotis pedicellata (Walter) Raf.; Fl. Ludov. 52 (1817)

= Podostigma pedicellata (Walter) Vail; Small, Fl. S.E. U.S.: 939 (1903)

= Podostigma pubescens Elliott; Sketch 1: 326 (1817)

= Stylandra pumila Nutt.; Gen. Am. 1: 170 (1818)

species :

Asclepias pellucida E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 381 (1882)

Distribution: Mexico (Chiapas, Guanajuato, Guerrero, Hidalgo, Jalisco, Oaxaca, Puebla, Querétaro, San Luis Potosí, Veracruz)

79 MEX

species :

Asclepias peltigera (E.Mey.) Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 8 (1896)

Distribution: South Africa (E-Cape Prov.)

27 SAF

Conservation Status: IUCN V

Synonyms: hidden

= Gomphocarpus peltigerus (E.Mey.) D.Dietr.; Syn. Pl. 2: 901 (1840)

= Gomphocarpus truncatus Harv.; Thes. Cap. 1: 42. t. 67 (1859) non (E. Mey.) D. Dietr.

= Lagarinthus peltigerus E.Mey.; Comm. Pl. Afr. Austr. 205 (1838)

species :

Asclepias perennis Walter; Fl. Carol. 107 (1788)

Name: Aquatic milkweed

Distribution: USA (Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Missouri, Mississippi, South Carolina, Tennessee, Texas)

74 USA 75 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias debilis Michx.; Fl. Bor.-Amer. 1: 116 (1803)

= Asclepias lancifolia Raf.; Autik. Bot.: 177 (1840)

= Asclepias laxiflora Perr. ex Colla; Herb. Pedem. 4: 149 (1835)

= Asclepias matelea Nutt.; Boston J. Philos. Arts 2(6): 611 (1825), nom. superfl.

= Asclepias parviflora Aiton; Hort. Kew. 1: 307 (1789)

= Asclepias parviflora var. latifolia Raf.; Autik. Bot.: 179 (1840)

= Asclepias parvifolia Pursh ex Decne.; Prodr. [A. DC.] 8: 568 (1844), orth. var.

= Asclepias parvula (A.Gray) Vail; Bull. Torrey Bot. Club 26: 423 (1899)

= Asclepias perennis var. parvula A.Gray; Proc. Amer. Acad. Arts 12: 70 (1877)

= Asclepias pulchella Salisb.; Prodr. Stirp. Chap. Allerton 150 (1796), nom. superfl.

= Matelea laevis Nutt.; Am. J. Sci. 5: 291 (1822)

species :

Asclepias pilgeriana Schltr.; Bot. Jahrb. Syst. 37: 608 (1906)

Distribution: Bolivia (Chuquisaca, Potosí, Tarija); Argentina (Catamarca, Jujuy, La Rioja, Salta, Tucuman)

83 BOL 85 ARG

Synonyms: hidden

= Asclepias campestris var. flava Kuntze; Revis. Gen. Pl. 3(2): 199 (1898)

= Asclepias campestris var. heterophylla Kuntze; Revis. Gen. Pl. 3(2): 199 (1898)

= Asclepias flava (Kuntze) Lillo; Physis 4: 419 (1919)

= Marsdenia rothii G.Don; Gen. Hist. 4: 131 (1837), nom. superfl.

species :

Asclepias praemorsa Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 8 (1896)

Distribution: South Africa (KwaZulu-Natal, E-Cape Prov.)

27 SAF

Conservation Status: IUCN I

Synonyms: hidden

= Gomphocarpus truncatus (E.Mey.) D.Dietr.; Syn. Pl. 2: 901 (1840)

= Lagarinthus truncatus E.Mey.; Comm. Pl. Afr. Austr. (Mey.) 206 (1837)

species :

Asclepias pratensis Benth.; Pl. Hartw. 45 (1840)

Distribution: Mexico (Guanajuato, Jalisco, Michoacán, Nayarit)

79 MEX

Synonyms: hidden

= Asclepias repanda Sessé & Moc.; Naturaleza (Mexico City), ser. 2, 1(App.): 43 (1888)

species :

Asclepias pringlei (Greenm.) Woodson; Ann. Missouri Bot. Gard. 28: 206 (1941)

Distribution: Mexico (Ciudad de México, Durango, Guanajuato, Guerrero, Jalisco, México State, Michoacán, Morelos, Nayarit, Oaxaca, Puebla, San Luis Potosí, Veracruz, Zacatecas)

79 MEX

Synonyms: hidden

= Acerates pringlei Greenm.; Proc. Amer. Acad. Arts 34: 570 (1899)

= Asclepias phenax Woodson; Ann. Missouri Bot. Gard. 28: 206 (1941

= Acerates humilis Benth.; Pl. Hartw. 291 (1840), non E. Mey.

species :

Asclepias prostrata W.H.Blackw.; Southwest. Nat. 9: 178 (1964)

Name: Prostrate milkweed

Distribution: USA (Texas); Mexico (Tamaulipas)

77 USA 79 MEX

Conservation Status: IUCN E

species :

Asclepias pseudoamabilis Goyder; Kew Bull. 64(3): 380 (2009)

Distribution: Tanzania

25 TAN

species :

Asclepias pseudofimbriata (Goyder) Goyder; Kew Bull. 64(3): 383 (2009)

Distribution: Ethiopia

24 ETH

Synonyms: hidden

= Trachycalymma pseudofimbriatum Goyder; Kew Bull. 56(1): 139 (2001)

species :

Asclepias pseudorubricaulis Woodson; Ann. Missouri Bot. Gard. 41: 59 (1954)

Distribution: Mexico (San Luis Potosí)

79 MEX

species :

Asclepias puberula A.Gray; Proc. Amer. Acad. Arts 16: 104 (1881)

Distribution: Mexico (Aguascalientes, Durango, Hidalgo, Jalisco, México State, San Luis Potosí, Veracruz)

79 MEX

species :

Asclepias pumila (A.Gray) Vail; Britton & A. Br., Fl. N. U. S. 3: 12 (1898)

Name: Plains milkweed

Distribution: USA (Colorado, Iowa, Kansas, Montana, North Dakota, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Wyoming)

73 USA 74 USA 77 USA

Synonyms: hidden

= Asclepias verticillata var. pumila A.Gray; Proc. Amer. Acad. Arts 12: 71 (1876)

species :

Asclepias purpurascens L.; Sp. Pl. 214 (1753)

Name: Purple milkweed (EN)

Distribution: Germany [I]; Canada (Ontario); USA (Arkansas, Connecticut, District of Columbia, Delaware, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Virginia, Wisconsin, West Virginia)

11 ger 72 CDN 74 USA 75 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias amoena L.; Sp. Pl. 214 (1753)

= Asclepias compressa Moench; Meth. 717 (1794)

= Asclepias dasypus Raf.; Atlantic J. 1: 152 (1832)

= Asclepias gonalis Raf.; Autik. Bot.: 178 (1840)

= Asclepias lasiotis Raf.; Autik. Bot.: 178 (1840)

species :

Asclepias pygmaea N.E.Br.; Bull. Misc. Inform. Kew 1895: 255 (1895)

Distribution: S-Tanzania; Malawi

25 TAN 26 MLW

species :

Asclepias quadrifolia Jacq.; Obs. Bot. 2: 8 (1767)

Name: Fourleaf milkweed (EN)

Distribution: Germany [I]; Canada (Ontario); USA (Alabama, Arkansas, Connecticut, Delaware, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Massachusetts, Maryland, Minnesota, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, West Virginia)

11 ger 72 CDN 74 USA 75 USA 78 USA

Synonyms: hidden

= Asclepias quadrifolia var. lanceolata Decne.; Prodr. [A. DC.] 8: 566 (1844)

= Asclepias quadrifolia var. oppositifolia Raf.; Autik. Bot.: 177 (1840)

= Asclepias vanilla Raf.; Am. Monthly Mag. 4: 39 (1818)

species :

Asclepias quinquedentata A.Gray; Proc. Amer. Acad. Arts 12: 71 (1877)

Name: Slimpod milkweed

Distribution: USA (Arizona, New Mexico, Texas); Mexico (Aguascalientes, Ciudad de México, Chihuahua, Michoacán, San Luis Potosí, Sonora)

76 USA 77 USA 79 MEX

Synonyms: hidden

= Asclepias amsonioides Standl.; Publ. Field Mus. Nat. Hist., Chicago Bot. Ser. 22: 44 (1940)

= Asclepias palmeri Vail; Bull. Torrey Bot. Club 25: 171 (1898)

= Asclepias quinquedentata var. neomexicana Greene ex A.Gray; Proc. Amer. Acad. Arts 16: 103 (1880)

= Asclepias rzedowskii W.D.Stevens; Phytologia 53(6): 402 (1983)

species :

Asclepias randii S.Moore; J. Bot., 255 (1902)

Distribution: D.R.Congo [Zaire]; Tanzania; Angola; Zambia; Malawi; Zimbabwe; N-Namibia

23 ZAI 25 TAN 26 ANG MLW ZAM ZIM 27 NAM

species :

Asclepias rara N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 693 (1908)

Distribution: South Africa (E-Cape Prov.)

27 SAF

species :

Asclepias rubra L.; Sp. Pl. 217 (1753)

Name: Red milkweed

Distribution: USA (Alabama, Arkansas, District of Columbia, Delaware, Florida, Georgia, Louisiana, Maryland, Mississippi, North Carolina, New Jersey, New York, Pennsylvania, South Carolina, Texas, Virginia)

75 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias acuminata Pursh; Fl. Am. Sept. 1: 182 (1813)

= Asclepias cordata Walter; Fl. Carol.: 105 (1788), nom. illeg.

= Asclepias lancifolia Steud.; Nomencl. Bot. 1: 77 (1821)

= Asclepias laurifolia Michx.; Fl. Bor. Amer. 1: 117 (1803)

= Asclepias periplocifolia Nutt.; Gen. Am. 1: 167 (1818)

= Asclepias polystachya Walter; Fl. Carol. 107 (1788)

= Asclepias rubra var. laurifolia (Michx.) R.M.Harper; Bull. Torrey Bot. Club 30: 339 (1903)

species :

Asclepias rusbyi (Vail) Woodson; An,1. Missouri Bot. Gard. 41: 183 (1954)

Name: Rusby´s milkweed

Distribution: USA (Arizona, Colorado, New Mexico, Nevada, Utah)

73 USA 76 USA 77 USA

Synonyms: hidden

= Acerates rusbyi Vail; Bull. Torrey Bot. Club, 37 (1898)

= Asclepias engelmanniana var. rusbyi (Vail) Kearney; Leafl. W. Bot. 5: 197 (1949)

species :

Asclepias ruthiae Maguire; Ann. Missouri Bot. Gard. 28: 245 (1941)

Name: Ruth´s milkweed

Distribution: USA (Arizona, New Mexico, Nevada, Utah)

76 USA 77 USA

Conservation Status: IUCN R

Synonyms: hidden

= Asclepias uncialis subsp. ruthiae (Maguire) Kartesz & Gandhi; Phytologia 71(4): 270 (1991)

= Asclepias eastwoodiana Barneby; Leafl. West. Bot. 4: 210 (1945)

= Asclepias sanjuanensis K.D.Heil, J.M.Porter & S.L.Welsh; Great Basin Nat. 49(1): 100 (1989)

= Asclepias uncialis var. ruthiae (Maguire) Sundell; Phytologia 69(4): 266 (1990)

species :

Asclepias sauronii M.G.Chávez & L.O.Alvarado; Phytotaxa 592(3): 256 (2023)

Distribution: Mexico (Coahuila, Nuevo Leon)

79 MEX

species :

Asclepias scaposa Vail; Bull. Torrey Bot. Club, 171 (1898)

Name: Bear Mountain milkweed

Distribution: USA (New Mexico, Texas); Mexico (Coahuila, Nuevo Leon, Puebla, San Luis Potosí, Zacatecas)

77 USA 79 MEX

Synonyms: hidden

= Asclepias exilis M.E.Jones; Contrib. Western Bot. 12: 48 (1908)

= Asclepias rafaelensis Brandegee; Univ. Calif. Publ. Bot. 4: 277 (1912)

species :

Asclepias schaffneri A.Gray; Proc. Amer. Acad. Arts 16: 103 (1881)

Distribution: Mexico (Guanajuato, San Luis Potosí, Zacatecas)

79 MEX

Synonyms: hidden

= Acerates schaffneri (A.Gray) E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 386 (1882)

= Asclepias zacatecana McVaugh; Contrib. Univ. Mich. Herb. 11(5): 289 (1978)

species :

Asclepias scheryi Woodson; Ann. Missouri Bot. Gard. 28: 285 (1941)

Distribution: Mexico (Aguascalientes, Ciudad de México, Coahuila, Durango, Hidalgo, Jalisco, México State, Michoacán, Morelos, Nayarit, Oaxaca, Puebla, San Luis Potosí, Tlaxcala, Veracruz)

79 MEX

Synonyms: hidden

= Asclepias lanuginosa Kunth; Nov. Gen. et Sp. 3: 193 (1818)

= Asclepias notha W.D.Stevens; Phytologia 53(6): 404 (1983), nom. nov.

species :

Asclepias schlechteri (Schum.) N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 714 (1908)

Distribution: South Africa (KwaZulu-Natal); Eswatini [Swaziland]

27 SAF SWZ

Conservation Status: IUCN E

Synonyms: hidden

= Gomphocarpus schlechteri K.Schum.; Bot. Jahrb. Syst. 33: 325 (1903)

species :

Asclepias schumanniana Hiern; Cat. Welw. Afr. Pl. 1: 688 (1898)

Distribution: Cameroon

23 CMN

Synonyms: hidden

= Asclepias gossweileri S.Moore; J. Bot. 49: 155 (1911)

= Asclepias rubella N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4(1): 348 (1902)

= Gomphocarpus amoenus K.Schum.; Bot. Jahrb. Syst. 17: 124 (1893)

= Gomphocarpus roseus K.Schum.; Bot. Jahrb. Syst. 17: 127 (1893), et in Engl. & Prantl, Natürl. Pflanzenfam. iv.2 237 (1895)

= Trachycalymma amoenum (K.Schum.) Goyder; Kew Bull. 56(1): 152 (2001)

species :

Asclepias senecionifolia M.E.Jones; Contrib. Western Bot. 12: 49 (1908)

Distribution: Mexico (Chiapas, Durango, Guanajuato, Guerrero, Jalisco, México State, Michoacán, Morelos, Oaxaca, Puebla, Veracruz, Zacatecas); Guatemala; Honduras; Nicaragua

79 MEX 80 GUA HON NIC

Synonyms: hidden

= Asclepias rosea Kunth; Nov. Gen. et Sp. 3: 189 (1819), nom. illeg.

species :

Asclepias shabaensis (Goyder) Goyder; Kew Bull. 64(3): 383 (2009)

Distribution: D.R.Congo [Zaire]

23 ZAI

Synonyms: hidden

= Trachycalymma shabaense Goyder; Kew Bull. 56(1): 144 (2001)

species :

Asclepias similis Hemsl.; Biol. Centr. Am. Bot. 2: 326 (1881)

Distribution: Mexico (Chiapas, Guanajuato, Guerrero, Hidalgo, Michoacán, Nuevo Leon, Oaxaca, Puebla, Querétaro, San Luis Potosí, Tamaulipas, Veracruz); Guatemala; El Salvador; Honduras; Nicaragua

79 MEX 80 ELS GUA HON NIC

Synonyms: hidden

= Asclepias alticola E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 371 (1882)

= Asclepias bidentata Hemsl.; Biol. Centr. Am. Bot. 2: 322 (1882)

= Asclepias guatemalensis Donn.Sm.; Coult. Bot. Gaz. 18: 297 (1893)

species :

Asclepias solanoana Woodson; Ann. Missouri Bot. Gard. 28: 207 (1941)

Name: Serpentine milkweed

Distribution: USA (California)

76 USA

Conservation Status: IUCN R

Synonyms: hidden

= Gomphocarpus purpurascens A.Gray; Proc. Amer. Acad. Arts 10: 76 (1874), nom. illeg., non A. Rich.

= Schizonotus purpurascens (A.Gray) A.Gray; Proc. Amer. Acad. Arts 12: 66 (1876)

= Solanoa purpurascens (A.Gray) Greene; Pittonia 2: 67 (1890), et Man. Bot. San Franc. Bay 242 (1894)

= Solanoana purpurascens (A.Gray) Kuntze; Revis. Gen. Pl. 2: 421 (1891)

species :

Asclepias solstitialis A.Chev.; Bull. Soc. Bot. France 61: Mem. 8, 270 (1914 publ. 1917)

Distribution: Guinea; Ivory Coast; Ghana; Nigeria; Cameroon; Congo [Brazzaville]; Central African Republic

22 GHA GUI IVO NGA 23 CAF CMN CON

Synonyms: hidden

= Gomphocarpus solstitialis (A.Chev.) Bullock; Kew Bull. 340 (1953)

species :

Asclepias speciosa Torr.; Ann. Lyc. N. York 2: 218 (1828)

Name: Showy milkweed

Distribution: Canada (Alberta, British Columbia, Manitoba, Saskatchewan); USA (Arizona, California, Colorado, Iowa, Idaho, Illinois, Kansas, Michigan, Minnesota, Montana, North Dakota, Nebraska, New Mexico, Nevada, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington State, Wisconsin, Wyoming)

71 CDN 73 USA 74 USA 75 USA 76 USA 77 USA

Synonyms: hidden

= Asclepias douglasii Hook.; Fl. Bor. Amer. 2: 53. t. 97 (1837)

= Asclepias giffordii Eastw.; Proc. Calif. Acad. Sci. ser. 4, 20: 150 (1931)

= Asclepias longicornis Kellogg; Proc. Calif. Acad. Sci. 1: 65 (1855)

species :

Asclepias sperryi Woodson; Ann. Missouri Bot. Gard. 28: 246 (1941)

Name: Sperry´s milkweed

Distribution: USA (Texas); Mexico (Coahuila)

77 USA 79 MEX

species :

Asclepias sphacelata (K.Schum.) N.E.Br.; Oliv. et al. (eds.), Fl. Trop. Afr. 4(1): 339 (1902)

Distribution: Mozambique

26 MOZ

Synonyms: hidden

= Gomphocarpus sphacelatus K.Schum.; Bot. Jahrb. Syst. 23: 233 (1896)

species :

Asclepias standleyi Woodson; Ann. Missouri Bot. Gard. 41: 160 (1954)

Distribution: Mexico (Sinaloa, Sonora)

79 MEX

species :

Asclepias stathmostelmoides Goyder; Kew Bull. 64(3): 375 (2009), nom. nov.

Distribution: D.R.Congo [Zaire]; Burundi; Tanzania; Zambia; Malawi; Mozambique

23 BUR ZAI 25 TAN 26 MLW MOZ ZAM

Synonyms: hidden

= Asclepias verdickii De Wild.; Ann. Mus. Congo Belge, Bot., sér. 5, 1: 188 (1904), pro syn.

= Stathmostelma verdickii De Wild.; Ann. Mus. Congo Belge, Bot., sér. 5, 1: 188 (1904)

species :

Asclepias stellifera Schltr.; Bot. Jahrb. Syst. 21: Beibl. 54: 9 (1896)

Distribution: South Africa (Limpopo, North-West Prov., Gauteng, Mpulamanga, Free State, KwaZulu-Natal, E-Cape Prov.); Lesotho; Eswatini [Swaziland]

27 LES SAF SWZ

Synonyms: hidden

= Asclepias simplex (Schltr.) Schltr.; J. Bot. 34: 455 (1896)

= Gomphocarpus revolutus (E.Mey.) D.Dietr.; Syn. Pl. 2: 901 (1840)

= Gomphocarpus simplex Schltr.; Beibl. Bot. Jahrb. Syst. 45: 21 (1894)

= Lagarinthus revolutus E.Mey.; Comm. Pl. Afr. Austr. 205 (1838)

species :

Asclepias stenophylla A.Gray; Proc. Amer. Acad. Arts 12: 72 (1876)

Name: Slimleaf milkweed

Distribution: USA (Arkansas, Colorado, Iowa, Illinois, Kansas, Louisiana, Minnesota, Missouri, Montana, Nebraska, Oklahoma, South Dakota, Texas, Wyoming)

73 USA 74 USA 75 USA 77 USA 78 USA

Synonyms: hidden

= Acerates angustifolia (Nutt.) Decne.; Prodr. [A. DC.] 8: 522 (1844)

= Polyotus angustifolius Nutt.; Trans. Am. Phil. Soc. N. S. 5: 201 (1837)

species :

Asclepias subaphylla Woodson; Ann. Missouri Bot. Gard. 41: 146 (1954)

Distribution: Mexico (Sinaloa, Sonora)

79 MEX

species :

Asclepias subulata Decne.; Prodr. [A. DC.] 8: 571 (1844)

Name: Rush milkweed

Distribution: USA (Arizona, California, Nevada); Mexico (Baja California Norte, Baja California Sur, Sinaloa, Sonora)

76 USA 79 MEX

species :

Asclepias subverticillata (A.Gray) Vail; Bull. Torrey Bot. Club, 178 (1898)

Name: Horsetail milkweed

Distribution: USA (Arizona, Colorado, Idaho, Kansas, Missouri, Nebraska, New Mexico, Nevada, Oklahoma, Texas, Utah, Wyoming); Mexico (Aguascalientes, Chihuahua, Coahuila, Durango, Nuevo Leon, Querétaro, San Luis Potosí, Sonora, Zacatecas)

73 USA 74 USA 75 USA 76 USA 77 USA 79 MEX

Synonyms: hidden

= Asclepias verticillata var. subverticillata A.Gray; Proc. Amer. Acad. Arts 12: 71 (1876)

species :

Asclepias subviridis S.Moore; J. Bot. 50: 346 (1912)

Distribution: Angola

26 ANG

Remarks: status uncertain

species :

Asclepias sullivantii Engelm. ex A.Gray; Man. Bot. ed. I. 366 (1817)

Name: Prairie milkweed

Distribution: Canada (Ontario); USA (Arkansas, Iowa, Illinois, Indiana, Kansas, Michigan, Minnesota, Missouri, North Dakota, Nebraska, Ohio, Oklahoma, South Dakota, Wisconsin)

72 CDN 74 USA 75 USA 78 USA

species :

Asclepias syriaca L.; Sp. Pl.: 214 (1753)

Name: Common milkweed

Distribution: Germany [I]; Switzerland [I]; Austria [I]; Czech Republic [I]; Slovakia [I]; Hungary [I]; Spain [I]; France [I]; Corsica [I]; Italy [I]; Slovenia [I]; Croatia [I]; Bosnia & Hercegovina [I]; Romania [I]; Bulgaria [I]; Lithuania [I]; Belarus [I]; Ukraine [I]; Crimea [I]; Bioko Isl. [Fernando Poo] [I]; Siberia [I] (Altai [I]); Uzbekistan [I]; Kyrgyzstan [I]; Northern Caucasus [I]; Transcaucasus [I]; Canada (Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Isl., Québec, Saskatchewan); USA (Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia)

11 aut cze ger hun slo swi 12 cor fra spa 13 bih bul cro ita rom slv 14 blr kry lit ukr 23 bio 30 sib 32 kgz uzb 33 ncs 71 CDN 72 CDN 73 USA 74 USA 75 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias apocinum Gaterau; Descr. Pl. Montauban 58 (1789)

= Asclepias consanguinea Kunze; Linnaea 20: 26 (1847)

= Asclepias cornuti Decne.; Prodr. [A. DC.] 8: 564 (1844), nom. illeg.

= Asclepias fragrans Raf.; Med. Repos. 5: 354 (1808), nom. illeg.

= Asclepias globosa Stokes; Bot. Mat. Med. 2: 4 (1812)

= Asclepias grandifolia Bertol.; Mem. Acc. Sci. Bolog. 3: 189 (Misc. Bot. 12: 47) (1851)

= Asclepias illinoensis Michx. ex Steud.; Nom. ed. II. 1: 146 (1840)

= Asclepias intermedia Vail; Bull. Torrey Bot. Club 31: 459, pl. 16, fig. 2, pl. 17, fig. 2, a-f (1904)

= Asclepias obtusifolia Kunze; Linnaea 20: 27 (1847), pro syn.

= Asclepias pubescens Moench; Methodus: 716 (1794), nom. illeg.

= Asclepias pubigera Dumort.; Fl. Belg. (Dumortier) 52 (1827)

= Asclepias serica Raf.; Autik. Bot.: 179 (1840), nom. illeg.

= Asclepias syriaca f. inermis J.R.Churchill; Rhodora 20: 207 (1919)

= Asclepias syriaca f. leucantha Dore; Rhodora 46: 387 (1944)

= Asclepias syriaca f. polyphylla B.Boivin; Naturaliste Canad. 94: 521 (1967)

species :

Asclepias tanganyikensis E.A.Bruce; Bull. Misc. Inform. Kew 1934: 303 (1934)

Distribution: Tanzania

25 TAN

Synonyms: hidden

= Gomphocarpus tanganyikensis (E.A.Bruce) Bullock; Kew Bull. 340 (1953)

species :

Asclepias texana A.Heller; Bot. Expl. S. Texas 1895: 77 t. 4 (1895)

Name: Texas milkweed

Distribution: USA (Texas); Mexico (Chihuahua, Coahuila, Nuevo Leon)

77 USA 79 MEX

species :

Asclepias tomentosa Elliott; Sketch 1: 320 (1817)

Name: Tuba milkweed

Distribution: USA (SE-Alabama, Florida, Georgia, SC-North Carolina, South Carolina, disjunct E-Texas)

77 USA 78 USA

Synonyms: hidden

= Asclepias aceratoides M.A.Curtis; Amer. J. Sci. Arts, ser. 2, 7: 4407 (1849)

species :

Asclepias tuberosa L.; Sp. Pl. 217 (1753)

subspecies :

subsp. tuberosa

Name: Butterfly milkweed

Distribution: USA (Alabama, Connecticut, District of Columbia, Delaware, Florida, Georgia, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, West Virginia); Mexico (Chihuahua, Coahuila, Nuevo Leon, Sonora, Tamaulipas)

74 USA 75 USA 78 USA 79 MEX

Synonyms: hidden

= Acerates decumbens (L.) Decne.; Prodr. [A. DC.] 8: 522 (1844)

= Acerates decumbens var. erecta Durand; Trans. Amer. Philos. Soc., n.s. 11: 174 (1860)

= Acerates floridana (Lam.) Hitchc.; Trans. Acad. Sci. St-Louis 5: 508 (1892)

= Asclepias cuneifolia Raf.; Autik. Bot.: 179 (1840)

= Asclepias decumbens L.; Sp. Pl. 216 (1753)

= Asclepias elliptica Raf.; Autik. Bot.: 179 (1840)

= Asclepias floridana Lam.; Encycl. 1: 284 (1783)

= Asclepias lutea Raf.; Med. Repos. 5: 361 (1808), nom. illeg.

= Asclepias revoluta Raf.; Fl. Ludov.: 51 (1817)

= Asclepias tuberosa f. bicolor Standl.; Rhodora 32: 33 (1930)

= Asclepias tuberosa f. decumbens (L.) Voss; Vilm. Blumengärtn. ed. 3. 1: 663 (1894)

= Asclepias tuberosa f. flavescens Farw.; Pap. Michigan Acad. Sci. 2: 36 (1923)

= Asclepias tuberosa f. lutea Clute; Amer. Bot. (Binghamton) 18: 73 (1912)

= Asclepias tuberosa subsp. interior Woodson; Ann. Missouri Bot. Gard. 31: 368, fig (1944)

= Asclepias tuberosa subsp. terminalis Woodson; Proc. Natl. Acad. Sci. U. S. A. 39: 79 (1953)

= Asclepias tuberosa var. angustifolia Raf.; Med. Fl. 1: 264 (1828)

= Asclepias tuberosa var. cordata Beck; Amer. J. Sci. Arts 11: 174 (1826)

= Asclepias tuberosa var. decumbens (L.) Pursh; Fl. Amer. Sept. 1: 184 (1813)

= Asclepias tuberosa var. flexuosa J.James; Bot. Gaz. 13: 271 (1888)

= Asclepias tuberosa var. interior (Woodson) Shinners; Field & Lab. 17: 89 (1949)

= Asclepias tuberosa var. prealta Raf.; Med. Fl. 1: 264 (1828), nom. nud.

= Asclepias tuberosa var. undulata Raf.; Med. Fl. 1: 264 (1828), nom. nud.

subspecies :

subsp. rolfsii (Britton ex Vail) Woodson; Ann. Missouri Bot. Gard. 31: 368 (1944)

Name: Rolfs´ milkweed

Distribution: USA (Alabama, Florida, Georgia, Mississippi, North Carolina, South Carolina)

78 USA

Synonyms: hidden

= Asclepias rolfsii Britton ex Vail; Small, Fl. S.E. U.S.: 943 (1903)

= Asclepias tuberosa var. rolfsii (Britton ex Vail) Shinners; Field & Lab. 17: 89 (1949)

species :

Asclepias ulophylla Schltr.; Bot. Jahrb. Syst. 38: 32 (1905)

Distribution: South Africa (Mpulamanga)

27 SAF

species :

Asclepias uncialis Greene; Coulter, Bot. Gaz. 5: 64 (1880)

Name: Wheel milkweed

Distribution: USA (Arizona, Colorado, New Mexico, Oklahoma, Texas, Utah, Wyoming); Mexico (Sonora)

73 USA 74 USA 76 USA 77 USA 79 MEX

Conservation Status: IUCN V

species :

Asclepias variegata L.; Sp. Pl. 215 (1753)

Name: Redring milkweed

Distribution: Canada (Ontario); USA (Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maryland, Missouri, Mississippi, North Carolina, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas, Virginia, West Virginia)

72 CDN 74 USA 75 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias citrifolia Jacq.; Coll. 2: 290 (1789)

= Asclepias hybrida Michx.; Fl. Am. Bor. 1: 115 (1803)

= Asclepias lindleyi Gillies ex Steud.; Nom. ed. II. 1: 145, 146 (1840)

= Asclepias variegata var. major Hook.; Fl. Bor.-Amer. 2: 52 (1837)

= Asclepias variegata var. minor Hook.; Fl. Bor.-Amer. 2: 52 (1837)

= Biventraria variegata (L.) Small; Man. Southeast. Fl. 1072 (1933)

species :

Asclepias velutina (Schltr.) Schltr.; J. Bot., 455 (1896)

Distribution: South Africa (Mpulamanga)

27 SAF

Conservation Status: IUCN V

Synonyms: hidden

= Gomphocarpus velutinus Schltr.; Bot. Jahrb. Syst. 18: Beibl. n. 45 22 (1894)

species :

Asclepias verticillata L.; Sp. Pl. 217 (1753)

Name: Whorled milkweed

Distribution: Canada (Manitoba, Ontario, Saskatchewan); USA (Alabama, Arkansas, Arizona, Connecticut, District of Columbia, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Jersey, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia, Wyoming)

71 CDN 72 CDN 73 USA 74 USA 75 USA 76 USA 77 USA 78 USA

Synonyms: hidden

= Asclepias galioides Kunth; Nov. Gen. et Sp. 3: 148 (1818)

= Asclepias linifolia Kunth; Nov. Gen. Sp. [H. B. K.] 3: 190 (1819)

= Asclepias parviflora Leconte ex Decne.; Prodr. [A. DC.] 8: 570 (1844), nom. inval.

= Asclepias verticillata var. galioides (Kunth) Decne.; Prodr. [A. DC.] 8: 569 (1844)

= Asclepias verticillata var. leptophylla Torr.; Rep. Exped. Zuni & Colorado Rivers 164 (1853)

= Asclepias verticillata var. linifolia (Kunth) Decne.; Prodr. [A. DC.] 8: 570 (1844)

species :

Asclepias vestita Hook. & Arn.; Bot. Beech. Voy. 363 (1839)

subspecies :

subsp. vestita

Name: Woolly milkweed

Distribution: USA (California)

76 USA

Synonyms: hidden

= Asclepias eriocarpa Torr.; Pacif. Railr. Rep. Whipple, Bot. 4(5

subspecies :

subsp. parishii (Jeps.) Woodson; Ann. Missouri Bot. Gard. 41: 149 (1954)

Name: Parish´s woolly milkweed

Distribution: USA (California)

76 USA

Synonyms: hidden

= Asclepias vestita var. parishii Jeps.; Man. Fl. Pl. Calif. [Jeps.] 772 (1925)

species :

Asclepias vicaria N.E.Br.; Harv. et al. (eds.), Fl. Cap. 4(1): 709 (1908)

Distribution: South Africa (Mpulamanga, KwaZulu-Natal, E-Cape Prov.)

27 SAF

species :

Asclepias vinosa (E.Fourn.) Woodson; Ann. Missouri Bot. Gard. 41: 169 (1954) 41: 169 (1954)

Distribution: Mexico (Ciudad de México, Morelos, Oaxaca)

79 MEX

Synonyms: hidden

= Acerates vinosa E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 387 (1882)

species :

Asclepias viridiflora Raf.; Med. Repos. N. York 5: 360 (1808)

Name: Green comet milkweed

Distribution: Canada (Alberta, British Columbia, Manitoba, Ontario, Saskatchewan); USA (Alabama, Arkansas, Arizona, Colorado, Connecticut, District of Columbia, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Jersey, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Virginia, Wisconsin, West Virginia, Wyoming); Mexico (Chihuahua, Coahuila, Durango, Nuevo Leon)

71 CDN 72 CDN 73 USA 74 USA 75 USA 76 USA 77 USA 78 USA 79 MEX

Synonyms: hidden

= Acerates bifida Rusby ex A.Gray; Proc. Amer. Acad. Arts 20: 295 (1885)

= Acerates ivesii Wooton & Standl.; Contr. U.S. Natl. Herb. 19: 509 (1915)

= Acerates viridiflora (Raf.) Eaton; Man., ed. 5, 90 (1829), Britton & Brown, Ill. Fl. N. U. S. & Canada 3: 14(1898)

= Acerates viridiflora var. ivesii Britton; Mem. Torrey Bot. Club 5: 265 (1894), nom. superfl.

= Acerates viridiflora var. lanceolata (Torr.) A.Gray; Syn. Fl. N. Amer. 2(1): 99 (1878)

= Asclepias lanceolata E.Ives; Amer. J. Sci. (New York), ed. 2, 1: 252 (1819), nom. illeg.

= Asclepias nutans Muhl. ex Steud.; Nomencl. Bot., ed. 2, 1: 146 (1840), nom. inval.

= Asclepias viridiflora var. lanceolata (Ives) Torr.; Fl. N. Middle United States [2]: 284 (1824)

= Asclepias viridiflora var. pubescentitomentosa Hook.; Compan. Bot. Mag. 1: 101 (1835)

= Gomphocarpus viridiflorus (Raf.) Spreng.; Syst. Veg. 1: 849 (1824)

= Otanema ovata Raf.; New Fl. 4: 61 (1838)

= Polyotus heterophyllus Nutt.; Trans. Amer. Philos. Soc., n.s. 5: 199 (1835)

species :

Asclepias viridis Walter; Fl. Carol. 107 (1788)

Name: Green antelopehorn

Distribution: USA (Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Missouri, Mississippi, Nebraska, Ohio, Oklahoma, South Carolina, Tennessee, Texas, West Virginia)

74 USA 75 USA 77 USA 78 USA

Synonyms: hidden

= Acerates paniculata Decne.; Prodr. [A. DC.] 8: 521 (1844)

= Anthanotis procumbens Raf.; Fl. Ludov.: 149 (1817)

= Anthanotis viridis (Walter) Raf.; Fl. Ludov. 52 (1817)

= Asclepias longipetala Scheele; Linnaea 21: 757 (1848 publ. 1849)

= Asclepias procumbens Raf.; Fl. Ludov.: 51 (1817)

= Asclepiodora viridis (Walter) A.Gray; Proc. Amer. Acad. Arts 12: 66 (1876)

= Gomphocarpus viridis (Walter) Spreng.; Syst. 1: 849 (1824)

= Podostigma viridis (Walter) Elliott; Sketch 1: 327 (1817)

species :

Asclepias viridula Chapm.; Fl. S. U. St. 363 (1806)

Name: Southern milkweed

Distribution: USA (Alabama, Florida, Georgia)

78 USA

Conservation Status: IUCN V

species :

Asclepias virletii E.Fourn.; Ann. Sci. Nat., ser. VI. 14: 378 (1882)

Distribution: Mexico (Coahuila, Nuevo Leon, San Luis Potosí, Tamaulipas)

79 MEX

Synonyms: hidden

= Asclepias longipedunculata Brandegee; Univ. Calif. Publ. Bot. 4: 277 (1912)

species :

Asclepias welshii N.H.Holmgren & P.K.Holmgren; Brittonia 31(1): 110 (1979)

Name: Welsh´s milkweed

Distribution: USA (Arizona, Utah)

76 USA

Conservation Status: IUCN E

species :

Asclepias woodii (Schltr.) Schltr.; J. Bot., 456 (1896)

Distribution: South Africa (KwaZulu-Natal)

27 SAF

Conservation Status: IUCN I

Synonyms: hidden

= Gomphocarpus woodii Schltr.; J. Bot. 32: 258 (1894)

species :

Asclepias woodsoniana Standl. & Steyerm.; Publ. Field Mus. Nat. Hist., Chicago, Bot. Ser. 23: 224 (1947)

Distribution: Mexico (Chiapas, Oaxaca, Veracruz); Guatemala; El Salvador; Honduras; Nicaragua; Costa Rica; Colombia (Atlántico, Magdalena)

79 MEX 80 COS ELS GUA HON NIC 82 CLM

species :

Asclepias zanthodacryon (L.B.Sm.) Woodson; Ann. Missouri Bot. Gard. 28: 207 (1941)

Distribution: Mexico (Coahuila, Nuevo Leon)

79 MEX

Synonyms: hidden

= Asclepiodora zanthodacryon L.B.Sm.; Contrib. Gray Herb. n. s. No. cxiv. 12 (1936)

species :

Asclepias ×kansana Vail; Bull. Torrey Bot. Club, 457 (1904)

Distribution: USA

Remarks: Asclepias speciosa x A. syriaca

Synonyms: hidden

= Asclepias syriaca var. kansana (Vail) E.J.Palmer & Steyerm.; Ann. Missouri Bot. Gard. 22: 621 (1935)

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A complete, synonymic checklist of the Higher Plants of the World

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A complete, synonymic checklist of the Higher Plants of the World

Version 19.2 (April 17th, 2024)

Covering 354,696 accepted species,
8,644 hybrids, 47,758 accepted infraspecific taxa and 996,379 synonyms,
in total 1,407,477* names

[about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus*" are deliberately omitted]

With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,290 pictures of 15,532 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life

Contact

How to Cite:

Search

+ Family

Filter

Order

Family (5)

Genus (347)

Display options

A complete, synonymic checklist of the Higher Plants of the World

Version 19.2 (April 17th, 2024)

Covering 354,696 accepted species, 8,644 hybrids, 47,758 accepted infraspecific taxa and 996,379 synonyms, in total 1,407,477* names

[*about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]

With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,290 pictures of 15,532 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life

Covering 354,696 accepted species,
8,644 hybrids, 47,758 accepted infraspecific taxa and 996,379 synonyms,
in total 1,407,477* names

[about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus*" are deliberately omitted]