Erect woody herb or scrambler 0·3–1·5 m. long or tall.. Stems densely velvety tomentose with short, mostly rather spreading greyish-white hairs.. Leaflets 3, the terminal one typically markedly transversely elliptic or rhom-boid, less often ovate-triangular, 0·4–3 cm. long, 0·6–3·3(–4) cm. wide, acute to obtusely rounded at the apex, laterals obliquely ovate, 0·3–1·5 cm. long, 0·4–1·4 cm. wide, mostly ± acute at the apex, all rounded at the base, densely usually velvety pubescent on both surfaces, gland-dotted on both surfaces but especially so beneath where the paler greenish-yellow gland-dots are so numerous that they are scarcely separated from each other by their own width (when fully developed they give a peculiar greyish yellow-green appearance to the foliage); petiole 0·5–3 cm. long; rhachis 0·2–1 cm. long; petiolules 0·5–2 mm. long; stipules linear-lanceolate, 2·5–4 mm. long, 0·5 mm. wide, pubescent.. Inflorescences rather lax, much shorter to somewhat longer than the leaves, 1–10-flowered; rhachis 0·5–7·5 cm. long; peduncle obsolete (i.e. with lowest flower almost in the axil) to 2 cm. long; pedicels 0·5–1·5(–3) mm. long; bracts deciduous, linear-lanceolate, 1·5–2 mm. long, 0·2 mm. wide, pubescent.. Calyx shortly pubescent and with yellow gland-dots; tube 1–2 mm. long; lobes linear-lanceolate, the lowest the longest, 2·5–4·5 mm. long, 0·5–1 mm. wide, the laterals 1·5–3 mm. long, 0·3–0·5 mm. wide, the upper pair 2–3 mm. long, joined only at the base or for ± half their length.. Standard pale yellow, obovate-oblong, 4–6·5 mm. long, 3–4 mm. wide, rather densely whitish pubescent outside save near the claw.. Pods falcate-oblong, 1·5–2 cm. long, 4·5–6 mm. wide, narrowed towards the base, apiculate, finely densely pubescent with very short white hairs and with small pale gland-dots.. Seeds red-brown or brown, mottled black, rounded-oblong, compressed; longest dimension 3·5–4·5 mm., shorter dimension 2·5–3 mm., 1·5–2 mm. thick.
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