This name is a synonym of Brassica elongata Ehrh..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50297567) with original publication details: Nomencl. Bot. (ed. 2) 2: 590 1841.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:288991-1.
This name was in version 1 of The Plant List, record tro-50297567.