Echinops ritro subsp. ritro

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 : 214

(a) Subsp. ritro :

Stem and leaves with eglandular hairs; leaf-segments more than 4 mm wide at base, linear-triangular. Pappus-setae connate for basal half. Throughout most ofthe range of the species.