Serratala radiata subsp. radiata

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 : 251-252

(a) Subsp. radiata :

Stems leafy almost to apex. Leaves distinctly scabrid, with terminal lobes usually larger than the lateral.

Throughout the range of the species except Albania and W. Jugoslavia.