S.Vietnam, Thua Thien Hue Prov., Phu Loc Distr., Bach Ma National Park, N slope of Bach Ma mt system around point 16°13′53′'N 107°49′02′'E at elev. about 100 m a.s.l.
Broad-leaved evergreen wet secondary closed forest along rocky river valley and on river slopes. Lithophytic herb on vertical shady river bluffs. Leaves deep uniform green above, light green with brownish nerves below. Flowers light pink with red-purple nerves, anthers yellow. Not common.
HLF 1561 2 May 2003. (Photo).
Coll. N.T.Hiep, L.Averyanov, N.T.Vinh et al. Grant from Henry Luce Foundation.