Scorzonera aristata, Ramond ex 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 : 320

14. S. aristata Ramond ex DC. in Lam. & DC., Fl. Fr. ed. 3, 4:922 (1805).

Perennial 10-50 cm, subglabrous or arachnoid-tomentose on stems and at base of leaves and involucre; rootstock vertical, cylindrical, stout, not fibrous at apex. Stems solitary or few, rather fleshy, simple or rarely with one branch, erect, leafless or with one small leaf. Leaves 7-30(-40) x 0- l~0-4(-0-6) cm, linear or narrowly linear-lanceolate, without prominent, erect bases. Involucre 20-30 mm; outer bracts at least I as long as inner. Ligules 1.5-2 times as long as involucre, yellow, sometimes reddish outside and often reddish when dry. Achenes 9-11 mm, cylindrical-ellipsoid, the outer with strongly rugose or tuberculate-squamate ribs, the inner with smooth or rugulose ribs. Pappus-hairs 1-1| times as long as achene, plumose, dirty white. 2л = 14. Meadows and other grassy places in the mountains', calcicele. • C. & E. Pyrenees, S. Alps, N. & C. Appennini. Au Ga Hs It Ju.