Torilis arvensis subsp. arvensis

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 371

(b) Subsp. arvensis ( subsp. divaricata Thell. , T. helvetica C. C. Gmelin ): Stem either ascending and often little-branched, the branches forming a narrow angle with the stem, or low and much-branched, the branches making a wide angle with the stem. Rays 4-12. Outer petals not more than 1 - 5 mm, very slightly radiate. Styles 2-3 times as long as the stylopodium. Throughout the range of the species.