Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.
Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.