N.Vietnam, Prov Lai Chau. Broadleaved forest on limestone at elevation at about 1000 m. a.s.l. Flowered in Hanoi private collection at May 2003. Coll. L.Averyanov and N.T.Hiep. Flowers: tepals light green with brown tint along margin, lip white, with deep purple-violet inside surface of side lobes and purple-violet stripes on the epichile. column and anther white. Rare.