S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 26-28 km to NE from Dalat city. Old open secondary dry coniferous mt forest with domination of Pinus kesiya at 1500-1700 m alt. in 8-10 km from Bi Dup main peak to the NW (N 12° 07′, E 108° 36′). Woody vine about 8-10 m lg. Not rare. VH 3855 11.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)