Asclepiadaceae R. Br. ? S. Vietnam, Prov. Kontum. Evergreen close primary forest on W slope of Ngoc Linh mountain system at 1300-1450 m near Long Nam village. Wine with milky juice up to 6 m lg. along river. Flowers white ? VH 1092 03.04.1995 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5094-93)
Participants: L. Averyanov, N.T. Ban, N. Q. Binh, A. Budantzev, L. Budantzev, N.T. Hiep, D.D. Huyen, P.K. Loc, N.X. Tam, G. Yakovlev