Prostrate shrublet up to 0.3 m wide. Branches thick and woody below, upper parts sparsely leafy, densely and divaricately branched. All mature parts (except the corolla and pods) densely sericeous. Leaves slender, (10-)15-20(-25) mm long, digitate, invariably 5-foliolate, densely sericeous; petiole slender, (5-)10-16(-20) mm long; leaflets relatively large, oblanceolate, 5-8 mm long, 1-3 mm wide, abaxially densely silky-sericeous, adaxially glabrous. Stipules single at each node, small, lanceolate to ovate, up to 4 mm long. Inflorescences leaf-opposed, 1-4(-6)-flowered; peduncle short, 2-6 mm long; bracts small, linear, up to 4 mm long; bracteoles absent. Flowers relatively large, (10-)15-20 mm long, yellow; pedicel short, 2-4 mm long. Calyx narrowly campanulate, sericeous; lobes long, narrowly acuminate, the upper and lateral lobes on either side fused much higher up in pairs, the lower lobe similar to the upper ones. Standard obovate, as long as the keel; claw 3-5 mm long; lamina 8-14 mm long, glabrous or with a few minute hairs dorsally along the middle. Wing petals oblong, slightly shorter than the keel, distinctly auriculate, glabrous; apex obtuse; sculpturing in 4 rows of intercostal lunae, fading into transcostal lamellae towards the auricle. Keel petals broadly oblong, glabrous; apex obtuse. Pods shortly stipitate, (stipe ±1 mm long), linear, 14-18 mm long, 3-4 mm wide, flat, upper suture minutely and inconspicuously verrucose, ±10-seeded, the seeds on long funicles. Seeds suborbicular, testa minutely and densely tuberculate.
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Like L. quinata but larger and more woody, leaflets densely silvery-silky on undersurface (vs. glabrescent), and flowers larger, (10-)15-20 mm long (vs. < 12 mm long).