Vietnam, Nghe An Prov., Tuong Duong Distr., Tam Quang Municipality, Tung Huong village, along Khe Mat stream around point 19°03′15″N 104°36′19″ at elevation 550-700 m a.s.l.
Lowland closed secondary and primary old evergreen forest on steep slopes along rocky ridge composed with stratified solid limestone.
Terrestrial sedge along ridge. Locally common.
HLF 6777 19 March 2007.
Coll. Averyanov L., P.K.Loc, N.V.Trai, N.T.Vinh, N.D.Phuong, Averyanova A. Grant from Henry Luce Foundation.