Trifolium isthmocarpum, Brot.

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

16. T. isthmocarpum Brot. , Phyt. Lusit. ed. 3, 1: 148 (1816).

Glabrous annual; stems 5-60 cm, branching from the base, procumbent or ascending, often fistulöse. Leaflets 10-25 mm, obovate, broadly elliptical or obtriangular; petioles up to 10 cm. Stipules membranous, abruptly contracted into a subulate apex. Heads 15-25 mm wide, hemispherical, or cylindrical, dense; peduncles 20-100 mm, longer than the leaves. Flowering pedicels not longer than the calyx-tube, weakly deflexed in fruit. Calyx-teeth subequal, triangular-acute to lanceolate-subulate, shorter than or as long as the calyx-tube, straight or recurved; corolla 9-12 mm, pink; standard 1^—2 times as long as the calyx. Legume oblong, constricted between the two seeds. Moist grassland on sandy soil. W. Mediterranean region and Portugal. Co Hs It Lu Si [Ga *Tu].