S. Vietnam, Dak Lac Prov., Krong Bong Distr., Cu Pui Municipality, elevation from Dak Tour village (12°30′N, 108°30′E) along Dak Tour river on N macroslope of Chu Yang Sinh mt system. Secondary dry evergreen broad-leaved forest with remnants of primary elements along river slopes at elev. 450-550 m. Herb vine 8-10 m lg in open place along river. Flowers yellow, very fragrant. Rare.
VH 5900 02.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)