FLORA OF VIETNAM Polypodiaceae Diplazium donianum (Mett.) Tardieu
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Co Lung Municipality, Eo Dieu village, around point 20°25′56′'N, 105°14′12′'E. Primary evergreen seasonal broad-leaved closed lowland forest on crystalline marble-like highly eroded limestone, very steep rocky mt slopes at elev. 500-850 m. Terrestrial fern in deep shade. Very common and locally abundant.