Centaurea attica subsp. attica

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 : 275

(c) Subsp. attica :

Stems branched below. Leaves white-tomentose, scabrid; segments linear. Involucre 10-12 x 5-6(-7) mm; appendages not covering the bracts, blackish, auriculate, with erect or patent apical spine 2-3(-6) mm. Florets pink or purple. Pappus c. | as long as achene. N. & E. Greece.