This name is a synonym of Rhipsalis monacantha Griseb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5103185) with original publication details: Natl. Cact. Succ. J. 12: 85 1957.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:219328-2.
This name was in version 1 of The Plant List, record tro-5103185, and has not been changed.