This name is a synonym of Rhamnus rosthornii E. Pritz..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 27501294) with original publication details: Repert. Spec. Nov. Regni Veg. 10(248–250): 272 1911.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:718443-1.
This name was in version 1 of The Plant List, record tro-27501294.