Lai Chau Prov., Phong Tho Distr., Sin Suoi Ho Municipality, Sa Ma Pho village, around point 22°33′21″N 103°34′29″E.
Secondary evergreen broad-leaved wet closed forest with bamboo on very steep mountain slopes and along ridges composed predominantly with weathered granite at elev. about 1900-2050 m a.s.l.
Shrub or treelet up to 5 m tall on shady steep rocky slopes and along ridges. Very common.
HAL 10745 14 Dec. 2006 Coll.: Nguyen Tien Hiep, L.Averyanov, Phan Ke Loc, Pham Van The, N.T.Vinh.