S. Vietnam, Prov. Lam Dong, 31 km to NE from Dalat city, distr. Lac Duong, municipalite Da Chay, vicinities Klong Lanh village (N 12° 08′, E 108° 39′). Closed primary broadleaved mt forest on NW macroslope of Bi Dup mt system at 1850-1950 m alt. Epiphytic creeping vine 2-3 m lg on steep slopes of very wet deep stream canyon. Common. VH 2950 20.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)