S. Vietnam, Prov. Lam Dong, 31 km to NE from Dalat city, distr. Lac Duong, municipalite Da Chay (N 12° 08′, E 108° 39′). Closed primary broadleaved mt forest on NW macroslope of Bi Dup mt system at 1550-1700 m alt. Woody vine up to 8 m lg in open place. Not common. VH 2789 17.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)
Collectors: L. Averyanov, N.Q. Binh, N.V. Duy, P.K. Loc