FLORA OF VIETNAM Polypodiaceae s.l. Tectaria devexa (Kunze ex Mett.) Copel.
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Co Lung Municipality, Khuyn village, around point 20o26′50′'N, 105o14′37′'E. Primary evergreen seasonal broad-leaved lowland forest on crystalline marble-like highly eroded limestone, steep rocky slope of limestone ridge at elev. 50-100 m. Terrestrial fern in open place. Very common.