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Leaves mostly 3-foliolate but those from the lowest node are sometimes 1-foliolate; leaflets 4.5–11.5 × 0.7–3.2 cm, elliptic to narrowly oblong, rounded to subacute and mucronulate at the apex, cuneate, sparsely to densely bristly pubescent on both surfaces; venation raised beneath; petiole 5–8 mm long; rhachis 5 mm long; petiolules 2 mm long; stipules 6–8 × 2–3 mm, narrowly oblong to linear-lanceolate, veined.
Flowers in axillary capitate reduced panicles, 1–2.5 × 1.5 cm, on peduncles 2–13 cm long; flowers paired; primary pedicels obsolete; secondary pedicels 1.5–2 mm long; bracts and bracteoles 3–5 mm long, linear.
Pod 1.2–2 cm × 6–8 mm, oblong-elliptic, flattened, apiculate, margined, covered with whitish or blackish-brown bristly hairs and also some finer hairs.
Calyx densely appressed white pubescent; tube 2 mm long; lobes 3–4 mm long, lanceolate, tapering, the upper pair united for about half their length.
Seeds dark red-brown, 5 × 3.5 × 1 mm, rounded reniform with pale developed rim aril.
Stems several, covered with short spreading hairs, sometimes corky near the base.
Erect or decumbent herb 20–30 cm tall from a woody rootstock up to 17 × 1 cm.
Standard cream, 6 × 3 mm, obovate-oblong, appressed pilose outside.
