S.Vietnam, Thua Thien Hue Prov., Phu Loc Distr., Bach Ma National Park, S slope of Bach Ma mt, below Hai Vong Dai peak, around point 16°11′65′'N 107°51′53′'E at elev. about 1150 m a.s.l.
Mixed and broad-leaved evergreen secondary closed mt forest on steep shale/granite slopes and cliffs. Terrestrial herb on shady steep stream slope. Very common.
HLF 1176 20 April 2003.
Coll. L.Averyanov, N.T. Vinh. Grant from Henry Luce Foundation.