This name is a synonym of Pereskia sacharosa Griseb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5107565) with original publication details: Kakteenl. 397 1966.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:219428-2.
This name was in version 1 of The Plant List, record tro-5107565, and has not been changed.