Vietnam, Quang Binh Prov., Minh Hoa Distr., Dan Hoa municipality, Giang Man Mountain, Vietnam-Laotian border, about 6 km to N of Cha Lo borders station, around point 17°41′09″N 105°45′54″E.
Primary broad-leaved forest on very steep slopes composed with brown shale at elevation 500-700 m a.s.l.
Tree to 12 m tall. Flower buds white. Occasional.
HAL 11712 19 April 2008 Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, N.S.Khang