What is "belostemma"

Belostemma is a genus of plant in family Asclepiadaceae, first described as a genus in 1834. It is native to China, India, and Nepal.

1. Belostemma cordifolium (Link, Klotz. & Otto) P.T.Li - S China
2. Belostemma hirsutum Wall. ex Wight - Sichuan, Yunnan, India, Nepal
3. Belostemma yunnanense Tsiang - Yunnan