Centaurea leucophaea subsp. leucophaea

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

(c) Subsp. leucophaea (inch C. paniculata subsp. pallidula Rouy ): Involucre 6-9 mm in diameter, rounded at base, spotted; appendages not covering the bracts, brown, rarely pale, with mucronate apex, the fimbriae c. 6 on each side. Florets pinkish-purple. Pappus c. I as long as achene. 2« = 18. From E. Pyrenees to N. W. Italy.