Xiangkhouang Prov., Peak Distr., Oran village, around point 19°38′53”N 103°23′12”E. Primary and secondary broad-leaved evergreen dry forest on shale sandstone slopes and along ridge edge at elev. about 1750-1850 m a.s.l. Epiphyte on tall mossy tree along ridge edge. Not rare. LA-VN 931b / TM 1225 2 April 2015 Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham.
Flowered in cultivation in 8 Aug 2016. Flowers light yellow. Photos L. Averyanov.