This name is a synonym of Rhipsalis floccosa subsp. pulvinigera (G. Lindb.) Barthlott & N.P. Taylor.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5100186) with original publication details: Rev. Hort. 64: 426 1892.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:219297-2.
This name was in version 1 of The Plant List, record tro-5100186, and has not been changed.