L.Averyanov, T.H.Nguyen, V.T.Pham & T.V.Nguyen HAL 4717
Locality
N Vietnam, Bac Kan Prov., Cho Don Distr., Ban Thi municipality, Phia Khao village, around the point 22°16'58 N, 105°31'20 E at elev. 800-900 m a.s.l. (Lung Chang Mt. and Lung Li Mt.). Primary broad-leaved evergreen closed and coniferous (with Pinus kwangtungensis) forest on very steep slopes and cliffs along tops of rocky ridge composed of solid marble-like stratified limestone. Lithophyte on wet travertine deposits on shady vertical cliff.