Senecio doria subsp. doria

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 196

(a) Subsp. doria (incl. S. schvetzovii Korsh. , S. macrophyllus Bieb. ): Stems and leaves glabrous. Basal and lower cauline leaves 3-7(-ll)cm wide, linear-elliptical to oblong-obovate, usually dentate. Supplementary bracts c. 1 as long as the involucre. Ligules 5-6. Achenes glabrous. Damp meadows and woods. Throughout most of the range of the species.