This name is a synonym of Prosthechea prismatocarpa (Rchb.f.) W.E.Higgins.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 67224) with original publication details: Brittonia 13: 265 1961.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:90867-2.
This name was in version 1 of The Plant List, record kew-67224, and has not been changed.