FLORA OF VIETNAM Simaroubaceae Ailanthus ? triphysa (Dennst.) Alston
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Co Lung Municipality, Khuyn village, around point 20°26′31′'N, 105°14′55′'E. Primary evergreen seasonal broad-leaved lowland forest on crystalline marble-like highly eroded limestone, N slopes of limestone ridge at elev. 400-460 m. Tree 40-45 m tall. Co-dominant of 1 forest stratum.