S.Vietnam, Thua Thien Hue Prov., Xuan Loc Distr., Bach Ma National Park, steep N slopes of Dong Truoi ridge around point 16°14′11′'N 107°44′28′'E at elev. 400-600 m a.s.l.
Broad-leaved evergreen secondary closed forest. Terrestrial herb on very steep rocky shady slope. Very common.
HLF 1813 9 May 2003.
Coll. N.T.Hiep, L.Averyanov, N.T.Vinh et al. Grant from Henry Luce Foundation.