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. Primary broad-leaved mountain evergreen forest on granites along river slopes at elev. 500-550 m. Terrestrial herb on shady steep slope. Flowers white, central petal with yellow spot. Common.
VH 6013 03.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)