Thanh Hoa Prov., Quan Son Distr., Muong Min Municipality, Ban Yen vill., shale mountains, about 15 km to SE of Na Meo centre (around point 20°17′28″N 104°40′43″E, 300 m).
Clustered in small group of trees, at about 300 m a.s.l. along stream banks. Regeneration common. Big trees, up to more than 2-3 m in dbh. HAL 11198 24 Aug. 2007 Coll.: P.K. Loc, N.S. Khang & N.T.Vinh
Grant from MOST, Council for Natural Science, Section of Life Sciences (6.077.06), Vietnam