Centaurea leucophaea subsp. biformis, (Timb. - Lagr.) 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. biformis (Timb.-Lagr.) Dostál , loc. cit. (1976)

( C. biformis Timb.-Lagr. ):

Involucre 10-13 mm in diameter, rounded at base; appendages yellow, with mucronate apex, the fimbriae c. 6 on each side. Pappus absent or very short. Foothills of E. Pyrenees (W. of Perpignan).