Centaurea attica subsp. asperula, (Halacsy) 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 : 275

(b) Subsp. asperula (Halácsy) Dostál , loc. cit. (1976)

( C. asperula Halácsy ):

Stems erect. Leaves with sparse arachnoid indumentum. Involucre 10-12x 6-8 mm; appendages covering the bracts, brown, auriculate, with erect or erecto-patent apical spine 3-4 mm. Florets pink. Pappus about as long as achene. Stony places. S.E. Greece (Attiki).