Hoa Binh Prov., Lac Son Distr., Tu Do Municipality, Mon village, around point 20°24′52”N 105°19′41”E.
Secondary evergreen dry broad-leaved forest on steep rocky slopes of remnant mountain composed with highly eroded marble-like solid crystalline limestone at elevation about 300 m a.s.l.
Epiphyte on mossy tree. Not common.
CPC 1392a 23 March 2011 Coll.: L.Averyanov et al.
Fl. under cultivation in Dec. 2012. Flowers light greenish to nearly almost white. Averyanov L. Photos.