This name is a synonym of Rhamnus utilis var. hypochrysa (C.K. Schneid.) Rehder.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 27501281) with original publication details: Notizbl. Königl. Bot. Gart. Berlin 5(43): 76 1908.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:718386-1.
This name was in version 1 of The Plant List, record tro-27501281, and has not been changed.