FLORA OF VIETNAM Lycopodiaceae Huperzia hamiltonii (Spreng.) Trevis
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Thanh Son Municipality, middle part of Pu Luong range, SE slopes of Phu Pha Phong peak around point 20°28′37′'N, 105°05′20′'E along main ridge. Primary evergreen seasonal broad-leaved closed submontane forest on basalt at elev. 1600-1650 m. Lithophyte and epiphyte. Very common.