S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14°39′N, 108°25′E). Primary broad-leaved wet evergreen forest on sandstone at elev. 1100-1200 m. Woody vine or climbing shrub in open slope along road. Flowers white. Very common. Commonest dominant of secondary communities of shrubs.
VH 5381 19.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)