This name is a synonym of Phaius mishmensis (Lindl. & Paxton) Rchb.f..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 150992) with original publication details: Bull. Mus. Natl. Hist. Nat., Sér. 3, Bot. 71(5): 141 1972 publ. 1973.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:650391-1.
This name was in version 1 of The Plant List, record kew-150992, and has not been changed.