S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14ш39'N, 108ш25'E). Primary evergreen broad-leaved wet forest on steep mt. slopes on sandstone & gneiss at elev. 1000-1200 m. Forb vine 3-5 m hg in open steep slope along road. Flowers yellowish - white. Common.
No VH 5108 15.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)