Tuyen Quang Prov., Na Hang Distr., Sinh Long Municipality, from central of Nam Duong Vill. through Xo Lo Che site to the direction of Ban Doang Vill., belonging to Prov. Ha Giang, around point 22°35′58″ N, 105°20′50″m 626 m In logged closed primary evergreen broad-leaved lowland forests on slope of sandy- or shale-stone mts. Big trees, ca. 15-20 x 0.3-0.4 m CPC 1335 13 Mar 2011 Coll.: N.Q.Hieu, N.T.Hiep, P.K.Loc, N.T.Vinh