Diplotaxis muralis, (L.) DC.

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 : 335

9. D. muralis (L.) DC. op. cit. 634 (1821)

(inch D. scaposa DC. ).

Annual, biennial or perennial, 10-50 cm, usually manystemmed; stems glabrous or sparsely hispid below. Leaves usually more or less confined to a basal rosette, with petioles up to 3 cm, lyrate-pinnatipartite, pinnatifid or sinuate-dentate, sometimes spathulate, entire. Cauline leaves, when present, subsessile, coarsely toothed. Petals 4—7-5(—8-5) mm, bright sulphur-yellow or sometimes becoming violet. Siliqua (15—) 18—45 x 1-5—2- 5 (-3) mm, erecto-patent; beak more or less conical, seedless. 2« = 44. C. & S. Europe; naturalized or casual elsewhere. Al BI Co Ga Ge Gr He Hs Hu It Ju Po Rm Rs (K) Sa Si [Br Hb Ho Su].

Extremely variable in habit and leaf-shape.