Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31′11.1″N, 105°46′41.4″E.
Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l.
Epiphyte on tall tree near mountain top. Tepals dull yellow, lip brown-purple. Not common.
11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 961.2.
Photos and herbarium prepared in 18 August 2020, sepals and petals light yellowish, lip dark purple brown, anther light yellow, L. Averyanov, T. Maisak.