Tuyen Quang Prov., Na Hang Distr., Sinh Long Municipality, Na Tau Vill., around point 22°34′22″ N, 105°23′25″ E, 300 m In logged closed primary evergreen broad-leaved lowland forests on stream banks of limestone areas Evergreen tree, up to 12-18 x 0.2-0.3 m CPC 1369 14 Mar 2011 Coll.: N.Q.Hieu, N.T.Hiep, P.K.Loc, N.T.Vinh