S. Vietnam, Dak Lac Prov., Krong Bong Distr., Cu Pui Municipality, elevation from Dak Tour village (12°30′N, 108°30′E) to main peak of Chu Yang Sinh mt system (12°24′N, 108°26′E) along Dak Tour river (N slope). Primary wet closed mountain broad-leaved and mixed forest on granites along very steep shady slopes of river canyon at elev. 1700-1750 m. Epiphyte creeping vine at the base of old trees on very steep slope of river canyon. Not rare.
VH 6425 11.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)