Thanh Hoa Prov., Quan Son Distr., Na Meo Municipality, logging quarter of Frontier Station No 497, around point 20°19′59″N 104°38′33″E, 550 m, shale mountains.
Scatterly on foot of heavily logged evergreen broad-leaved forests and secondary bamboo forests.
HAL 11211 25 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