Centaurea bombycina subsp. bombycina

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 : 280

(a) Subsp. bombycina :

Densely caespitose. Involucral appendages with apical spine c. 2 mm, with a distinct hyaline margin. Florets pink to red. Sierra Tejeda.