S. Vietnam, Dak Lac Prov., Krong Bong Distr., Krong Kmar waterfall, N slope of Chu Yang Sinh mt system (12°29′N, 108°20′E). Remnants of primary evergreen dry broad-leaved forest on granite outcrops at elev. 400-450 m. Terrestrial herb up to 1.5 m hg in shady steep slope. Flowers white, central tepal with 1 yellow and two lateral red stripes. Common.
VH 5875 01.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)