This name is a synonym of Brassica nigra (L.) K.Koch.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100359787) with original publication details: 109. 1769.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:288494-1.
This name was in version 1 of The Plant List, record tro-100359787.