Heterostemma

Heterostemma
Unidentified Heterostemma species
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Gentianales
Family:	Apocynaceae
Subfamily:	Asclepiadoideae
Tribe:	Ceropegieae
Genus:	Heterostemma Wight & Arn. (1834)
Synonyms
Dittoceras Hook.f. (1883) Oianthus Benth. (1876) Symphysicarpus Hassk. (1857)

Heterostemma is a genus of plants in the family Apocynaceae, first described in 1834. It is native to India, China, Taiwan, Southeast Asia, Australia, and certain islands in the Pacific.

Species

45 species are currently accepted:

1. Heterostemma acuminatum Decne. – Java
2. Heterostemma alatum Wight & Arn. – Indian subcontinent and Myanmar
3. Heterostemma andersonii (Hook.f.) Rodda – eastern Himalayas (Sikkim to Darjeeling)
4. Heterostemma angustilobum Schltr. – Philippines (Mindanao)
5. Heterostemma barikianum P.Agnihotri, D.Husain, P.Katiyar, D.Sahoo, Rodda & T.Husain – Manipur, Myanmar, and Thailand
6. Heterostemma beddomei (Hook.f.) Swarupan. & Mangaly – southwestern India
7. Heterostemma bicanthaceum Meve, Gâteblé & Liede – New Caledonia
8. Heterostemma brownii Hayata – southern China including Taiwan
9. Heterostemma carnosum Rodda – eastern New Guinea
10. Heterostemma collinum Schltr. – New Guinea
11. Heterostemma cucphuongense T.B.Tran & Rodda – Vietnam
12. Heterostemma cuspidatum Decne. – Philippines
13. Heterostemma dalzellii Hook.f. – western India
14. Heterostemma deccanense (Talbot) Swarupan. & Mangaly – southwestern India (Maharashtra and Kerala)
15. Heterostemma disciflorum (Hook.f.) Swarupan. & Mangaly – southern India (Andhra Pradesh and Karnataka)
16. Heterostemma esquirolii (H.Lév.) Tsiang – Thailand and southern China
17. Heterostemma ficoides A.Kidyoo – Thailand
18. Heterostemma fimbriatum King & Gamble – Peninsular Malaysia (Perak)
19. Heterostemma garrettii (Kerr) Rodda – Thailand
20. Heterostemma grandiflorum Costantin – Vietnam and southern China
21. Heterostemma herbertii Elmer – Philippines (Luzon)
22. Heterostemma kaniense Schltr. – New Guinea
23. Heterostemma lobulatum Y.H.Li & Konta – Yunnan
24. Heterostemma maculatum (Kerr) Rodda – Thailand
25. Heterostemma magnificum P.I.Forst. – Australia (Northern Territory)
26. Heterostemma membranifolium (Lauterb. & K.Schum.) Schltr. – Bismarck Archipelago
27. Heterostemma menghaiense (H.Zhu & H.Wang) M.G.Gilbert & P.T.Li - Yunnan, Hainan, and Taiwan
28. Heterostemma montanum Schltr. – New Guinea
29. Heterostemma oblongifolium Costantin – Vietnam, Laos, southern China
30. Heterostemma pingtaoi Shao Y.He & J.Y.Lin – Hainan
31. Heterostemma piperifolium King & Gamble – southern Indochina (Vietnam, Cambodia, and Thailand) and Peninsular Malaysia
32. Heterostemma samoense (A. Gray) P.I. Forst. – Samoa
33. Heterostemma saolaense Rodda & T.A.Le – Vietnam
34. Heterostemma siamicum Craib – Thailand, Vietnam, southern China (southern Yunnan and Guangxi)
35. Heterostemma sinicum Tsiang – Hainan
36. Heterostemma stellatum Hook.f. – eastern Himalayas and Assam
37. Heterostemma suberosum Costantin – Vietnam
38. Heterostemma succosum Kerr – Thailand
39. Heterostemma tanjorense Wight & Arn. – India and Sri Lanka
40. Heterostemma trilobatum A.Kidyoo & Thaithong – Thailand
41. Heterostemma tsoongii Tsiang - southern China (Guangxi, Fujian, and Hainan)
42. Heterostemma urceolatum Dalzell – southwestern India (Maharashtra and Karnataka)
43. Heterostemma vasudevanii Swarupan. & Mangaly – India (Kerala)
44. Heterostemma wallichii Wight & Arn. - Yunnan, Nepal, Assam, and Bhutan
45. Heterostemma xuansonense T.B.Tran & J.Hw.Kim – Vietnam