S. Vietnam, Kontum Prov., Sa Thay Distr., Sa Son Municipality, Chu Mom Ray nature reserve (14°25′N, 107°44′E). Primary wet broad-leaved closed evergreen mountain forest on granites at elev. 600-700 m. Terrestrial herb 10-20 cm hg in shady slope of forest streamlet. Rare.
VH 5787 28 04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)