Centaurea kernerana, 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

192. C. kernerana Janka , Österr. Bot. Zeitschr. 22: 178 (1872)

( C. derventana Janka , non Vis. & Pancić).

Perennial. Stems 10-40 cm, simple or with 2 branches, ascending. Leaves green, subglabrous or hispidulous, scabrid; lower lanceolate, dentate, pinnatifid or pinnatilobed, attenuate into a petiole; uppermost oblong or ovate-lanceolate, sometimes subamplexicaul. Involucre 15 x 15-18 mm; appendages attenuate into a triangular-lanceolate, blackish, filiform, plumose-fimbriate, arcuate-recurved acumen up to 8 mm. Florets purple, the outer radiate. Achenes c. 4 mm; pappus 2-4 mm. Mountain rocks. • Bulgaria. Bu.