Centaurea aplolepa subsp. aplolepa

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 : 281

(a) Subsp. aplolepa :

Stems 20-30 cm. Leaves grey-green, scabrid; lower pinnatisect. Involucre 10-12 x 8-10 mm, ovoidglobose; bracts subentire or denticulate; inner appendages irregularly serrate. Achenes black; pappus j as long to as long as achene. 2n= 18. Coast of N.W. Italy, from prov. Savona to prov. Livorno.