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.
Epiphyte on mossy trees on mountain top. Not common.
4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 676.
Fl. in cult in 10 October 2018. Tepals dull pale yellowish, lip light brownish. Photos. L. Averyanov.