Son La Prov., Quynh Nhai Distr., Muong Chien Comm., Muong Chien Vill., Ung Len mt., 600-700 m, around point 21050′50” N, 103032′10” E), about 2 km to W of Quynh Nhai FPD Station (around point 21050′10” N, 103034′12” E, 203 m), lower amd medium upper parts of slopes of limestone mountains.
In completely logged and suffered from fire primary closed evergreen broad-leaved submontane scrubs. Clustered. Epiphyte herb.
HAL 11300 30 Nov 2007 Coll.: P.K. Loc & N.T. Vinh
Grant from MOST, Council for Natural Science, Section of Life Sciences (6.077.06), Vietnam