Spreading prostrate annual; stems sparsely to moderately hairy, ribbed. Lvs moderately to densely hairy; leaflets sessile, elliptic or oblong, acute or obtuse, in (5)-7-12-(14) pairs, sometimes alternate, 1-3-(4) mm long; stipules adnate to petiole, lanceolate. Heads 2-6-flowered; bracts subtending the heads with 5-9 leaflets; bracteoles subtending fls minute, scarious; peduncles lvs. Calyx moderately hairy; calyx teeth triangular, much < tube. Corolla white or cream with red or pink stripes on standard, 3-5 mm long. Pod densely hairy when young, becoming less hairy when mature, sometimes glabrous, constricted between seeds, veined, curved or straight, compressed, 10-20 mm long, with (1)-4-9, 1-seeded segments; seeds smooth, light brown.
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