Centaurea alba subsp. euxina, (Velen.) 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 : 289

(q) Subsp. euxina (Velen.) Dostál , loc. cit. (1976)

( C. euxina Velen. , C. margaritacea sensu Hayek, non Ten.):

Biennial. Stems 40-50 cm, sparingly branched from the middle with erect branches. Leaves greyish-green or subglabrous; lower 2-pinnatisect, with remote, narrowly linear segments; upper pinnatisect. Involucre 7-8 mm in diameter, ovoid-globose; appendages covering bracts, orbicular, with green centre, the margin wide, scarious, white, somewhat lacerate, the apex mucronate. Florets pink. Achenes c. 3 mm; pappus c. 3 mm. Maritime sands. • N.E. Bulgaria.