This name is a synonym of Guarianthe × guatemalensis (T.Moore) W.E.Higgins.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 35940) with original publication details: Fl. Mag. (London) 1: t. 61 1861.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:317860-2.
This name was in version 1 of The Plant List, record kew-35940, and has not been changed.