S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 35 km to NE from Dalat city. Open secondary broadleaved forest rich in primary elements along mt river on NW macroslope of Bi Dup mt system at 1450 m alt. (N 12° 08′, E 108° 39′). Woody vine up to 8 m lg. Flowers yellowish-green. Not rare. VH 2933 19.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)