Cynanchum gracillimum is a species of flowering plant in the family Apocynaceae. Under the synonym Adelostemma gracillimum, it was at one time the only species in the genus Adelostemma. It is native to Myanmar and China (Guangxi, Guizhou, Yunnan).Flora of China Vol. 16 Page 205 乳突果 ru tu guo Adelostemma gracillimum (Wallich ex Wight) J. D. Hooker, Fl. Brit. India. 4: 21. 1883.Hooker, Joseph Dalton. 1883. Adelostemma. Flora of British India 4(10): 20-21
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