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.
Clustering terrestrial and lithophytic herb on open rocky place on mountain top. Occasional.
4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 656.
Herbarium specimen prepared in 26.12.2019, L. Averyanov, AL 656.1. Tepals white with pink tint, lip with purple marks. L. Averyanov (LE 01067227).