Trifolium retusum, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 163

20. T. retusum L. , Demonstr. Pl. 21 (1753)

( T. parviflorum Ehrh. ).

Glabrous or glabrescent annual; stems 10-20(-40) cm, numerous, branching, procumbent or ascending. Leaflets 8-18 mm, the lower obovate-lanceolate, the upper oblong, mucronate, denticulate; veins curved, prominent; petioles 10-70 mm. Stipules triangular, acuminate, membranous. Heads 8-11 mm wide, globose, dense, the upper nearly sessile, the lower with peduncles up to 30 mm. Pedicels c. 1 mm or less, much shorter than the bracts and calyx-tube, not or slightly deflexed in fruit. Calyx exceeding the petals. Calyx-teeth very unequal, finally recurved, the upper longer than the tube; corolla 4-5 mm, white or pink; standard ovate, not emarginate. Legume 2-seeded. Dry, grassy places. C. & S.E. Europe, extending locally westwards to N. W. Spain and E. Portugal. Au Bu Cz Ga *Ge Hs Hu Ju Lu Rm Rs (W, K, E) Tu.