Prostrate perennial herb, with several sparsely branched stems from a rootstock consisting of several fusiform tubers up to 7 × 1.2 cm. Stems slender, up to c. 70 cm long, with quite long internodes, pubescent to velvety and with some longer bristly hairs as well. Leaflets 3, 1.3–6.5 × 0.8–3 cm, elliptic or ovate, acute to mostly rounded but mucronulate at the apex, rounded at the base, glabrescent to pubescent above, glandular and pubescent on the nerves to densely velvety beneath; venation raised beneath, dark reddish in dry state; petiole 7–25 mm long; rhachis 6–10 mm long; petiolules 2 mm long; stipules 4–5 × 1.2 mm, narrowly triangular, pubescent, veined. Racemes axillary, short, 1–20-flowered; rhachis 0.5–2 cm long; peduncle 1.5–9 cm long, pubescent and with longer hairs; pedicels c. 2 mm long; bracts deciduous, 2–3 × 1.5 mm, ovate, pubescent. Calyx pubescent and glandular, 3.5–5 mm long; lobes lanceolate, ± equalling the tube. Standard dull yellow outside tinged or veined with red, yellow or orange inside, 6–12.5 × 3.5–7 mm, obovate or rhombic, densely pubescent and also glandular in the median area. Pods 10–16 × 7–9 mm, oblong, with short pubescence and also longer ferruginous hairs c. 1 mm long and scattered glands. Seeds pale pinkish-brown with dark speckling or black, (3)4.5–5 × 3–4 × 1.2–2 mm, ellipsoid-oblong; rim aril brown.
