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 mountain broad-leaved evergreen forest on granite slopes along river canyon at elev. 550-600 m. Terrestrial and Lithophytic herb on open wet mossy rocks along river. Flowers yellow. Not common.
VH 6473 12.05.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)