Centaurea margaritacea subsp. konkae

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 : 286

(g) Subsp. konkae (Klokov) Dostál, loc. cit. (1976)

( C. konkae Klokov ):

Stems smooth above. Involucre 15—16x 16-17 mm, subglobose; appendages 6-7 x 8-10 mm, covering bracts, reniform, keeled, coriaceous on keel, with oblong-triangular, reddish- or blackish-brown central spot, the margin denticulate, pellucid, sometimes convolute, the apex muticous. Florets pink. Achenes 3-5-5 mm, brown, with white ribs; pappus somewhat longer than achene. River sands. • S.E. Ukraine (by east bank of R. Dnepr, above Zaporož'e).