Procumbent herbaceous perennial up to 0.18 m high and 0.5 m in diameter. Branches slender, densely leafy, woody at the base only. All mature parts sparsely pilose. Leaves trifoliolate, (10-)14-26 mm long; petiole much shorter than the terminal leaflet, 2-7 mm long, the lateral leaflets slightly asymmetrical; leaflets relatively large, thin in texture, broadly oblanceolate to elliptic, (6-)8-18(-20) mm long, (2-)4-6(-9) mm wide, sparsely pilose on both surfaces; midrib distinct on abaxial surface, invisible on adaxial surface. Stipules single at each node, foliaceous, similar to the leaflets but slightly smaller, 5-15 mm long, 1-3.5 mm wide. Inflorescences terminal, with large, foliaceous bracts along the lower part of the main axis, 4-12-flowered; peduncle (including the rachis) (15-)24-40(-60) mm long, usually thick and rigid in the fruiting stage; bracts large and foliaceous, broadly obovate, 6-14 mm long, 3-6 mm wide, the lower ones widely separated on the rachis and not subtending flowers, occasionally petiolate, the upper ones inserted ± halfway up the pedicel; bracteoles large, narrowly oblanceolate to linear, 4-6 mm long, 0.5-1 mm wide. Flowers subumbellately arranged at the apex of the inflorescence, relatively small, 10-12 mm long, yellow; pedicel 1-4 mm long. Calyx with the upper two lobes shorter than the lower three lobes, the lateral sinuses slightly shallower than the upper and lower sinuses; lobes relatively short and broad, ± as long as the tube, apices broadly triangular, acute. Standard broadly oblong, as long as the keel; claw ±4 mm long; lamina 6-7 mm long, ±4 mm wide, lobed at the base, apex acuminate, abaxially densely pubescent over the whole surface. Wing petals subtriangular, shorter than the keel, conspicuously auriculate, pubescent along the lower side; apex rounded to truncate; sculpturing in 5 rows of intercostal lunae, with a few large transcostal lamellae towards the auricle. Keel petals obovate-oblong, only slightly auriculate; claw slightly shorter than the lamina; lamina pubescent over most of the surface, apex rounded. Androecium with the stamens fused high up into a narrow sheath; anthers dimorphic, the basifixed ones oblong and slightly longer than the ovate dorsifixed ones, carinal anther similar to the dorsifixed anthers. Gynoecium subsessile; pistil oblong, pubescent; style with only the terminal part curved upwards; stigma small, directed to the front. Pods obovate-oblong, 6-7 mm long, 3 mm wide, compressed and not laterally inflated, upper suture smooth, 3-4-seeded, funicles 1-1.5 mm long. Seeds (immature) suborbicular, ±1.5 mm diameter, testa sparsely and minutely tuberculate.
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