FLORA OF VIETNAM NEW Plants of Phong Nha - Ke Bang National Park Begoniaceae Begonia sp.
Vietnam, Quang Binh Prov., Minh Hoa Distr., Thuong Hoa Municipality, about 2 km to E of Ban On village (17°40′21′'N, 105°58′00E).
Heavily logged primary and secondary closed evergreen broad-leaved forest on tops of rocky ridge composed with solid and stratified marble-like highly eroded crystalline limestone at elevation 550-650 m a.s.l.
Lithophytic herb on open rocky outcrops. Leaves uniform green. Locally common.