FLORA OF VIETNAM Begoniaceae Begonia aff. macrostoma Irmsch.
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Thanh Son Municipality, middle part of Pu Luong range, SE slope of Phu Pha Phong peak around point 20°28′37′'N, 105°05′20′'E. Primary evergreen seasonal broad-leaved closed submontane forest on basalt along main ridge at elev. 1600-1650 m. Terrestrial herb up to 1 m tall. Leaves uniform green on both sides. Locally common.