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 closed mountain broad-leaved evergreen forest on very steep granite slopes along river canyon at elev. 1400 m. Terrestrial herb on very steep shady slope. Flowers yellowish. Vary common (very rare in flower). VH 6382 12.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)