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 epiphyte and lithophyte on mountain top. Occasional. 4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 646.
Herbarium prepared in 09.07.2020, flowers uniform emerald green, column white, anther green, L. Averyanov, T. Maisak, AL 646.1.
Coordinates (geographic position):17° 35′ 0.3″ N, 105° 47′ 35.6″ E ±1000 mRecord creation: 2020-07-27, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01076850 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01076850