Brassica elongata subsp. elongata

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 336

(a) Subsp. elongata :

Leaves sinuate-pinnatifid. In the western part o f the range o f the species; introduced elsewhere. Au Bu Cz Ju Rm [Ga Ge Ho It].