This name is a synonym of Pseudorhipsalis alata (Sw.) Britton & Rose.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50266078) with original publication details: Enum. Diagn. Cact. 131 1837.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:138394-1.
This name was in version 1 of The Plant List, record tro-50266078, and has not been changed.