Medicago rugosa Desr., it is an annual herb, stems, 15-50 cm, rather stout, ascending, sulcate, shortly glandular- and eglandular-pubescent. Leaflets, obovate, cuneate, dentate at least in the upper half. Stipules, lanceolate, incise-dentate, or nearly so. Yellow flowers, small, 2-4 cm awned, peduncles, 2-5-flowered, shorter than the petiole of the subtending leaf, pedicels equal to the tube of the calyx. Corolla, 3-4 mm, orange or pale yellow. Legume, broadly discoid, usually 7-10 mm in diam., without spines, glabrous or sparsely glandular-pubescent, with 2-4 flat coils; radiating veins on the surface of the coils sparsely anastomosing, thickened towards the margin, which thus appears rugose, 3-10 seeded. Seeds, kidney shaped, surface smooth, olive, brown or black.
Flowering in: Mar-Apr.
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