FLORA OF VIETNAM Polypodiaceae s.l. Tectaria aff. simonsii (Baker) Ching
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Co Lung Municipality, Eo Dieu village, around point 20°26′06′'N, 105°13′51′'E. Primary evergreen seasonal broad-leaved closed lowland forest on clayey shale at foothill slopes of rocky ridge composed with crystalline marble-like highly eroded limestone at elev. 500-700 m. Terrestrial fern. Locally very common.