Orchidaceae Bulbophyllum psychoon Rchb.f. ( = B. insulsum (Gagnep.) Seidenf.; B. levinei Schltr.; B. lockii Aver. & Averyanova)
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 on mossy tree on mountain top. Occasional.
4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 654.