N.Vietnam, Cao Bang Prov., Trung Khanh Distr., Ngoc Khe Municipality, Pac Nga village, around point 22°54′59′'N, 106°31′44′'E, at elevation 500 m a.s.l.
Remnants of secondary broad-leaved evergreen forest on alluvial valley of Quy Son River around village at lower part of foothills of rocky ridge composed with light gray solid marble-like highly eroded crystalline limestone.
Tree 20-25 m tall. Fruits dull red-brown. Occasional?