This name is a synonym of Pfeiffera miyagawae Barthlott & Rauh.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50174984) with original publication details: Cact. Succ. J. (Los Angeles) 68(3): 156 1996.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:989619-1.
This name was in version 1 of The Plant List, record tro-50174984, and has not been changed.