FLORA OF VIETNAM Loganiaceae Crowfurdia campanulacea Wall. & Griff. ex C.B.Clarke
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Thanh Son Municipality, middle part of Pu Luong range, rocky cliffs 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 at elev. 1600-1650 m. Herb vine 2-4 m lg. Flowers light green-violet. Common.