Cirsium tuberosum, (L.) All.

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 : 238

32. C. tuberosum (L.) All. , Fl. Pedem. 1: 151 (1785).

Plant with short rhizome; roots with fusiform tubers. Stem with 2-3(-6) long branches or simple. Leaves sessile to semiamplexicaul, deeply pinnatifid to pinnatisect, scarcely arachnoid-hairy above, sparsely arachnoid-hairy beneath; segments with 2-3(-5) oblong to elliptic-lanceolate, dentate lobes. Capitula solitary. Involucral bracts erect; outer obtuse; middle obtuse to acute. 2л = 34. Usually in rather damp grassland', calcicele. • W. & W.C. Europe, extending to N. Italy, fAu Br Ga Ge He Hs It *Ju [Be Cz],