FLORA OF VIETNAM Polypodiaceae s.l. Asplenium belangeri
N. Vietnam, Thanh Hoa prov., Ba Thuoc distr., Co Lung municipality, territory of Pu Luong protected area, near Co Lung village, Nui Doan (Pha Doan) mountain system (20°26′30′'N, 105°11′32′'E). Primary evergreen broad-leaved dry forest on steep slopes of remnant highly eroded karst limestone ridge at elev. 350-450 m a.s.l. Lithophyte on vertical shady cliffs. Very common.