Centaurea paniculata subsp. castellana, (Boiss. & Reuter) Dostal

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

(e) Subsp. castellana (Boiss. & Reuter) Dostál , loc. cit. (1976)

(C. castellana Boiss. & Reuter ):

Branches long. Involucre 10 x 5 mm; appendages 3-5 mm, pale brown, with an erect apical spine 2-3 mm, rarely very short, the fimbriae c. 2 mm. Pappus c. | as long as achene. C., E. & S. Spain, C. Portugal.