S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14°39′N, 108°25′E). Primary evergreen broad-leaved wet forest on steep mt. slopes on sandstone & gneiss at elev. 1000-1200 m. Terrestrial forb up to 5 m hg in shady steep wet slope along stream. Inflorescences brightly purple. Very common.
VH 5127 15.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)