This name is a synonym of Sinapis arvensis var. orientalis (L.) W.D.J.Koch & Ziz.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Fl. Canada 1: 51 1978.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:36201-2.
This name was in version 1 of The Plant List, record kew-2682320.