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 mossy cloud mixed forest (with Pinus, Fokienia, Dacrydium and Dacrycarpus) on very steep granite slopes at elev. 2200-2300 m. Terrestrial herb or shrublet up to 1 m hg in mossy open cliffs. Flowers white with violet-purple tint. Locally common.
VH 6221 09.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)