S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14ш39'N, 108ш25'E). Primary broad-leaved closed evergreen wet mountain forest on sandstone steep slopes of forest river at elev. 1100-1200 m. Woody vine 6-8 m hg in open place along forest road. Flowers green-yellowish. Not common.
No VH 5632 23.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)