Leaves pinnate with (4)6–11 pairs of leaflets; petiole 0.1–0.3 cm long, petiole and rachis together 1.4–5 cm long, pubescent like the stem; leaflets (5)7–16 × (1)1.5–3.5(4.5) mm, oblanceolate to narrow-oblanceolate, 3–6 times as long as broad, subcuneate at the base, rounded to emarginate at the apex; upper surface glabrous or shortly pubescent, lower surface densely appressed-pubescent with silvery hairs; stipules 3–5(6) × c.0.2 mm, ± subulate.
Calyx 4–5 mm long, covered with longish, appressed to ascending brown or grey hairs; lateral teeth about equalling the tube, upper teeth connate for ½–? their length.
Flowers in terminal and axillary racemes 3–18 cm long and in the axils of up to 5 upper leaves; bracts 1–2.5 × c.0.2 mm, ± subulate; pedicels 1.5–3 mm long.
Seeds 8–9, 2–2.8 × 1–1.6 × 0.8–1 mm, oblongoid, with a very small aril excentrically placed on one of the longer sides.
Pods 32–47 × 3–3.5 mm, margins with dark brown hairs, surfaces with light brownish-grey to silvery appressed hairs.
Annual or perhaps sometimes a short-lived perennial, with erect, branched stems 45–150 cm high.
Petals 7–9 mm long, orange, red or pink or sometimes somewhat purplish.
Ovary pubescent; style glabrous, with pencillate tip.
Stems with dense, ± appressed, grey or silvery hairs.
Upper stamen free.