Son La Prov., Moc Chau Distr., Chieng Son comm., Hin Pen village, around point 20°42′36.7N 104°35′11.0E.
Primary and secondary evergreen broad-leaved forest on very steep slopes and cliffs of highly eroded red-brown sandstone at elevation about 1200 m a.s.l.
Creeping epiphyte on mossy trees on mountain top. Common.
29 September 2016 CPC 8144a Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.V.Maisak, N.T.Son. Living plant collected without herbaria. Flowered in 28 March 2018.