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Leaves pinnate with (3)4–8 pairs of leaflets; petiole 0.5–2.5(3.3) cm long, petiole and rachis together 3–10 cm long, pubescent like the stem; leaflets 1–3.5(4.5) × 0.3–0.8(1) cm, narrowly elliptic to linear-elliptic, rounded to subcuneate at the base, acute to rounded at the apex; upper surface glabrous or appressed-pubescent, lower surface appressed-pubescent; stipules 5–10 × (0.4)1–2 mm, linear-triangular.
Flowers in terminal racemes, sometimes with the lowermost flowers in the axils of the uppermost leaves; bracts 3–5 × 0.5–1 mm, linear-triangular, falling early, somewhat purplish with grey pubescence; pedicels 2–4 mm long.
Seeds 11–13, c.3.5 × 2 × 1.3 mm, ± oblong, with a small white aril in the middle of one of the long sides, the testa with a conspicuous irregular pattern of dark brown markings on a light brown background.
Calyx (3)4–6(7) mm long, usually somewhat purplish with appressed to spreading grey hairs; upper teeth connate for about half their length; lateral teeth about equalling the tube, triangular-acuminate.
Probably a short-lived perennial with a stout taproot and branching stems 25–100 cm high forming a low bush, somewhat woody towards the base.
Stems usually fairly densely appressed-pubescent with grey hairs, rarely spreading-pubescent or subglabrous.
Pods (35)60–65 × 4.5–5 mm, shortly and rather sparsely appressed-pubescent.
Petals (13)14–18(20) mm long, pink or red or sometimes purplish-red.
Ovary pubescent; style pubescent.
Stamen tube connate above.
