S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14°39′N, 108°25′E). Remnants of primary broad-leaved evergreen mountain forest on sandstone slopes at elev. 1100-1200 m. Woody vine about 15 m lg on high tree. Flowers dull yellow. Rare.
VH 5762 26.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)