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 wet broad-leaved forest on steep granite slopes. at elev. 1200-1250 m. Terrestrial herb on steep shady river slope. Flowers yellowish, tepals with reddish stripes. Not rare. No VH 6278 06.05.2000.
International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 6383-98).