Standard yellow, often lined with red or purple, 8.5–10 × 9–10 mm; wings yellow; keel yellow or greenish.
Fruits 15–23 mm long, of 4–7 articles; each article 2–2.5(3.2) mm long and wide, glabrous and glandular or with few to many glabrous or retrorsely pubescent bristles.
Seeds pale brown, 1.8–2.3 × 1.2–1.5 × 0.6 mm, ellipsoid-reniform, slightly beaked at one end beyond the small eccentric hilum.
Leaves 4-foliolate (rarely less); leaflets 5–30 × 2–8(9) mm, lanceolate, or narrowly elliptic, acute and apiculate at the apex, cuneate at the base, glabrous or slightly pubescent, densely glandular-punctate or sometimes mostly glandular-punctate along the margins; petiole 5–18 mm long; petiolules 0.2–1 mm long, glabrous or pubescent; stipules 5–15 mm long including the 1.5–5 mm long spur, 1.5–3 mm wide, narrowly to broadly lanceolate, glabrous, punctate or not.
Stems mostly much branched at the base, usually glabrous but sometimes slightly pubescent (very rarely densely pubescent).
Calyx tube 1.5–2 mm long; lobes 2.5–3.5 mm long.
Inflorescences 1.5–20 cm long; peduncle 2–4 cm long; bracts 6–14 × 2.5–5.5 mm, elliptic to ovate, acute, glabrous or the margins distinctly ciliate, sparsely to densely pellucid-punctate.
Perennial herb (rarely annual) with decumbent or prostrate stems 15–75 cm long.
Perennial herb with prostrate or decumbent stems, up to 6.5 dm. long, from a slender fibrous rootstock.
Stipules lanceolate or narrowly lanceolate, up to 12(–15) mm. long.
Leaves 4-foliolate; terminal leaflets of upper leaves lanceolate or narrowly elliptic, up to 22 × 3 mm., often much smaller, acute, apiculate, glabrous or with a few hairs on the midrib and margin, ± glandular-punctate beneath; lateral leaflets smaller; leaves towards the middle of the stem larger; leaflets of lower leaves smaller and proportionally broader.
Legume up to 18 mm. long and 7-seeded, often much shorter; segments 2.5 × 2 mm., variously clothed.
Petals lemon-yellow or orange marked with reddish; standard up to 8.5 mm. long.
Flowers longer than the bracts.
Bracts ovate or elliptic, acute, usually longer than the internodes, beset with glands, glabrous.