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. Lithophytic herb up to 30 cm hg in shady wet places along river. Not common.
VH 5962 03.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)