FLORA OF VIETNAM Plants of Phong Nha - Ke Bang National Park Gesneriaceae Gen. ?
Vietnam, Quang Binh Prov., Bo Trach Distr.,Son Trach Municipality, around point 17°30′32′'N, 106°17′45′'E at elev. 300-400 m a.s.l.
Secondary closed broad-leaved evergreen forest and scrub on rocky steep slopes of remnant mountains composed with solid highly eroded crystalline deep gray limestone.
Lithophytic herb on vertical shady cliff. Flowers blue-violet, white inside. Locally common.