Trifolium resupinatum, 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 : 165

30. T. resupinatum L. , Sp. Pl. 771 (1753).

Glabrous annual; stems 1 O-3O(-6O) cm, procumbent, ascending or erect. Leaflets 7-20 mm, obovate-cuneate. Bracts minute, united at the base. Flowers resupinate, scented or scentless. Heads in fruit 8-20(-25) mm, globose, stellate; peduncles shorter than to twice as long as the leaves. Calyx 5-10 mm in fruit, pyriform, sparsely pubescent to tomentose, glabrescent, crowned by the two divergent upper calyx-teeth; corolla 2-8 mm, pink, rarely reddish-purple. Grassy places or disturbed, usually damp ground; sometimes cultivated. Doubtfully native in S. Europe; frequently introduced in W. & C. Europe. *Az *A1 *Be *B1 Bu *Co *Cr *Ga *Gr *Hs *It *Ju *Lu *Rm *Rs (K) * Sa * Si *Tu [Au Be Br Cz Ge He Ho Hu].

Very variable in habit and the size of its parts. Var. majus Boiss. (T. suaveolens Willd. ), with tall, fistulöse stems; peduncles twice as long as the leaves; flowers strongly scented; fruiting heads 20 mm or more and corolla 7-8 mm is anciently cultivated for fodder. It is naturalized in Portugal and probably also in the Mediterranean region.