Centaurea friderici, Vis.

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 : 271-272

83. C. friderici Vis. , loc. cit. (1847).

Perennial. Stems 30-40 cm, paniculately branched. Leaves white-tomentose; lower 2- pinnatisect. Capitula solitary. Involucre 12-17 x 9-14 mm;

appendages orbicular, cartilaginous, pale brown, with 3-4 fimbriae on each side, acute at apex. Florets purple, rarely white. Calcareous maritime rocks. • Islands of C. Adriatic. Ju.