S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, vicinities Klong Lanh village, 31 km to NE from Dalat city. Old open evergreen broadleaved secondary forest rich in primary elements along mt river on W macroslope of Bi Dup mt system at 1500-1550 m alt. (N 12° 08′, E 108° 39′). Giant woody vine about 25-30 m lg. Flowers light pink-violet, fruits brownish-purple. Not common. VH 3918 13.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)