This name is a synonym of Brassica napus L..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Pflanzenr. IV, 105(70): 42 1919.
⥇ A cross-taxon basionym link was ignored while processing this record,
see Brassica quadrivalvis Hook.f. & Thomson.
This name was in version 1 of The Plant List, record kew-2682406.