Centaurea ovina subsp. lavrenkoana

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 : 273

(b) Subsp. lavrenkoana (Klokov) Dostál, loc. cit. (1976)

( C. lavrenkoana Klokov ):

Plant densely pubescent. Involucre 8-11 x 3-5 mm, oblong-cylindrical; bracts with 3 veins, the lower fimbriae forming small auricles. Pappus 1-5-2 mm. Calcareous rocks. • S.E. Ukraine.