S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14°39′N, 108°25′E). Primary broad-leaved closed evergreen wet mountain forest on sandstone steep slopes of forest river at elev. 1100-1200 m. Terrestrial herb in shady wet slope. Leaves deep green, below dirty purple. Locally common.
VH 5597 23.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)