Leaves pinnate with (3)5–8(10) pairs of leaflets; petiole (0.2)0.5–1.5(2.0) mm long, petiole and rachis together 2–6.5(9) cm long, pubescent like the stem; leaflets (4)7–18 × (3)5–9 mm, obovate or obtriangular, cuneate at the base, broadly rounded to truncate or occasionally slightly emarginate at the apex; upper surface glabrous, lower surface rather softly appressed-pubescent; stipules 2–6 × 0.3–1.2(1.8) mm, linear-triangular.
Calyx 4–6 mm long, with longish, grey, appressed to ascending hairs; teeth linear, 3–4 times as long as the very short tube, the two upper teeth slightly joined towards their base.
Flowers in ± short and few flowered, terminal (appearing leaf-opposed) racemes 1–8(12) cm long with up to 6(10) nodes; bracts 2–5 mm long, linear; pedicels 2–5 mm long.
Seeds (6)7–9(10), usually 8, c.3 × 2 × 1 mm, ± rhomboidal, brown, with the hilum and very small aril slightly excentric on one of the longer sides.
Annual to short-lived perennial with decumbent or ascending stems 15–45 cm long.
Stems clothed with soft whitish spreading hairs when young, glabrescent later.
Pods (25)32–40 × 3.5–4.2(4.5) mm, straw-coloured, thinly appressed-pubescent.
Petals 5–7 mm long, pink or perhaps sometimes red or purplish.
Ovary appressed-pubescent; style glabrous.
Staminal tube joined above.