Centaurea debeauxii subsp. debeauxii

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 : 293

(e) Subsp. debeauxii :

Leaves grey-tomentose. Involucre 9-12 mm in diameter, globose; appendages triangular- to linear-lanceolate, not completely covering bracts, the fimbriae 3 times as long as the width of the appendage, yellowish-brown, 7-9 on each side. Outer florets not radiate. S. W. France, N. Spain.