Cirsium glabrum, DC.

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 : 239

42. C. glabrum DC. in Lam. & DC., FI. Fr. ed. 3,5:463 (1815).

Perennial (10-)20-40(-60) cm. Stem simple or sparingly branched, patent-puberulent. Leaves coriaceous, undulate, attenuate-sessile, not decurrent, oblong, pinnatifid, subglabrous; segments suborbicular to broadly triangular, lobed, with stout spines (7—)9—13(—16) mm. Capitula usually solitary, pedunculate, with 5 or more, linear-lanceolate, long-spiny, undulate subtending leaves exceeding capitulum. Involucre 17-25 x (18-)20-25(-30) mm; bracts with erecto-patent to suberect apical part much shorter than the basal part and a spine 1 - 5-4 mm, the vittae absent or indistinct. Corolla 18-22 mm, pale yellow. Achenes 5-7 mm; pappus 18-23 mm. 2л = 34. Damp screes and streamsides. • Pyrenees. Ga Hs.

C. albicans Willk. , Linnaea 30: 109 (1859), described from S. Spain (prov. Granada), is a little-known species or possibly a hybrid, which is like 42 but has the stem 30-100 cm, subglabrous, leaves with spines 3-5 mm, capitula smaller, 1-3 in a dense corymb or cluster, the uppermost leaves shorter than the capitulum, involucral bracts with a weak spine up to 2 mm and distinct vittae and whitish corolla.