Cao Bang Prov., Thong Nong Distr., Yen Son Municipality, Nhieu Lung village, around point 22°46′07.9″N, 105°53′59.4″E. Primary fractionaly logged coniferous forest with Pseudotsuga sinensis along highly eroded rocky limestone ridge at elevation 1150-1250 m a.s.l. Epiphyte. 8 October 2013 CPC 5467c / TM 1081 L.Averyanov, N.T.Hiep, L.M.Tuan, N.S.Khang, T.Maisak, L.Osinovets
Flowered in cultivation 22 January 2016. Flowers yellowish, lip speckled with purple and purple keels. L.Averyanov