This name is a synonym of Vincetoxicum rossicum (Kleopow) Barbar..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 2609736) with original publication details: Taxon 11: 174 1962.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:93918-1.
This name was in version 1 of The Plant List, record tro-2609736.