Centaurea paniculata subsp. paniculate

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 : 277

(a) Subsp. paniculate :

Capitula solitary. Involucre 3-5 mm in diameter; appendages with acuminate apex 1 mm, the fimbriae 1 mm. Pappus as long as achene. S. France, S. & E. Spain, N. W. Italy.