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. Small herb on wet shady rocks of waterfall cliff. Not common.
HLF 1162 20 April 2003.
Coll. L.Averyanov, N.T. Vinh. Grant from Henry Luce Foundation.