Centaurea indurata, Janka

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 : 295

190. C. indurata Janka , Flora (Regensb.) 41: 444 (1858).

Perennial. Stems 5O-8O(-1OO) cm, erect, sparingly branched. Leaves greyish-arachnoid-hairy, undivided, broadly lanceolate; lower dentate, acute, attenuate into the petiole; middle attenuate or rounded at the base. Capitulum solitary. Involucre 15 x 8-10 mm, ovoid or ovoid-cylindrical; appendages not completely covering bracts, dark brown, black at the base, narrowly lanceolate, attenuate into a subulate-filiform, recurved, pectinate-fimbriate, black acumen 6-7 mm, the fimbriae 8-12 on each side, pale brown, the middle ones 3 mm. Florets pinkish-orange or purple, the outer radiate. Achenes c. 3 mm; pappus very short. Grassland and open woods. • From E. Czechoslovakia to Bulgaria. Bu Cz Hu Rm.

Probably a hybrid between 188 and 189.