This name is a synonym of Phragmipedium caudatum (Lindl.) Rolfe.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 53974) with original publication details: Gen. Sp. Orchid. Pl. 531 1840.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:329196-2.
This name was in version 1 of The Plant List, record kew-53974.