This name is a synonym of Cattleya amethystoglossa Linden & Rchb.f. ex R.Warner.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 35798) with original publication details: Braz. Bifol. Cattleyas 93 1977.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:887307-1.
This name was in version 1 of The Plant List, record kew-35798, and has not been changed.