Prostrate annual, 0.5-0.8 m wide. Branches sparsely leafy, sparsely pubescent. Leaves invariably 3-foliolate, (5-)10-14(-22) mm long; petiole ± as long as the terminal leaflet; leaflets relatively small, oblanceolate to obovate, (3-)5-9(-12) x (1.5-)3-4(-6) mm, base cuneate, apex truncate to emarginate, abaxial surface sparsely pubescent, adaxial surface glabrous. Stipules single at each node, lanceolate, 2-6 x 11 mm. Inflorescences in terminal or subterminal heads, the heads globose when young, oblong when fully developed, (4-)12-52-flowered; peduncle variable in length, 5-24 mm long; bracts small, linear or narrowly lanceolate, 2-3 mm long, up to 0.5 mm wide; bracteoles absent. Flowers very small, ±6 mm long, yellow; pedicel absent. Calyx subequally lobed, the sinuses of ± equal depth; lobes narrowly triangular, acute. Standard suborbicular, as long as the keel; claw ±1.5 mm long; lamina 2.5 x 4 mm, without lobes or callosities, abaxially pubescent over most of the basal part. Wing petals oblong, almost as long as the keel, glabrous except for a few hairs on the auricle and near the attachment of the claw; auricle small; apex obtuse; sculpturing in 4-5 rows of intercostal lunae, fading into transcostal lamellae towards the auricle. Keel petals oblong, only slightly auriculate; claw ±2 mm long; lamina ±3 x ±1.5 mm, pubescent at least towards the apex; apex rounded. Androecium long and narrow; anthers dimorphic; basifixed anthers broadly oblong, much larger than the small ovoid dorsifixed anthers; carinal anther similar to dorsifixed anthers. Gynoecium sessile; pistil very small, ovoid-oblong, pubescent, with 3-4 ovules; style long and slender. Pods very small, ovoid, ±2.5 x ±1.5 mm, much inflated laterally, totally indehiscent, enclosed by the persistent and much-inflated calyx; upper suture minutely verrucose, 2-3-seeded. Seeds suborbicular, ±1.2 mm in diameter, testa sparsely tuberculate.
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Prostrate annual. Leaves 3-foliolate, leaflets obovate-cuneate, stipules solitary. Flowers sessile in dense spikes, yellow, keel hairy at tip.