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 wet closed mountain broad-leaved forest on granites along river slopes at elev. 500-900 m. Terrestrial herb up to 1 m hg in open grassy forest swamp. Flowers: tepals white, with dirty purple tint, lip purple with yellowish margin. Common.
VH 6069 04.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)