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 up to 3 m hg. Flowers white, central tepal with yellow apex and reddish stripe on lateral sides.
VH 5998 03.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)