Leontodon tuberosus, L.

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 : 315

23. L. tuberosus L. , Sp. Pl. 799 (1753)

( Thrincia tuberosa (L.) DC. ).

Perennial with long, slender tubers. Stems 1-6, 7-35 cm, simple, with few to numerous, rigid, simple eglandular or longstalked 2- to 3-fid hairs; bracts 0-2. Leaves 20-140 x 5-25 mm, obovate to oblanceolate-oblong, more or less obtuse, retrorsedentate to runcinate-pinnatifid, narrowed to a sometimes dentate petiole, with numerous rigid, long-stalked 2- to 3-fid hairs. Capitulum solitary. Involucre 9-15x6-10 mm; bracts oblong, narrowed to an obtuse apex, glabrous or with rigid, long-stalked 2-fid hairs often confined to a median line. Ligules yellow, the outer with a greenish stripe on the outer face. Stigmas yellow or discoloured. Achenes 3-7 mm, transversely rugose or muricate, of 2 kinds; outer curved, sometimes with a short beak and with a pappus of hairs not more than 0-5 mm; inner usually straight, beaked, the pappus of 2 rows of plumose hairs. 2« = 8. Mediterranean region, Portugal. Al BI Co Cr Ga Gr Hs It Ju Lu Sa Si Tu.