Nghe An Prov., Ky Son Distr., Na Ngoi Municipality, eastern slopes of Phu Xai Lai Leng Mountain. Primary very humid broad-leaved forest on steep mountain slopes composed of sandstone and gray shale at elevation 2400-2500 m a.s.l. around point 19°12’17.7’’N 104°11’06.6’’E. Tree 20 m tall. Not common.