Lai Chau Prov., Phong Tho Distr., Sin Suoi Ho Municipality, Sa Ma Pho village, around point 22°32′26″N 103°32′05″E.
Secondary open evergreen broad-leaved forest and secondary woodlands on very steep mountain slopes along rocky stream valley composed predominantly with weathered granite at elev. about 1000-1100 m a.s.l.
Tree up to 25 m tall on very steep shady slopes along rocky stream valley. Common. Occasional co-dominant of secondary woodlands in the area.
HAL 10704 13 Dec. 2006 Coll.: Nguyen Tien Hiep, L.Averyanov, Phan Ke Loc, Pham Van The, N.T.Vinh.