This name is a synonym of Phragmipedium longifolium (Warsz. & Rchb.f.) Rolfe.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 54191) with original publication details: Bot. Zeitung (Berlin) 10: 690 1852.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:329199-2.
This name was in version 1 of The Plant List, record kew-54191.