Hyoseris 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 : 307

153. Hyoseris L. 1

Annual or perennial herbs. Stems several, simple. Leaves all basal, pinnatifid. Capitula solitary. Involucral bracts in 2 rows, the outer much shorter than the inner. Receptacle flat, without scales. Ligules yellow, the outer sometimes with a purplish stripe on outer face which turns greenish when dry. Marginal achenes compressed, the median compressed and winged, the inner terete or compressed and winged; pappus of rigid hairs and scales, or only of scales. 1 Scapes 0-5-7 cm, often swollen; involucre 7-10 x 3-5 mm

1. scabra 1 Scapes 6-36 cm, not swollen; involucre 10-19 mm

2 Stock not woody; involucre 10-15 mm; inner achenes terete, sterile 2. radiata 2 Stock woody; involucre 13-19 mm; inner achenes compressed, winged, fertile 3. taurina