Corolla white or cream-coloured, occasionally pale mauve, the standard with reddish or purplish veining, the keel with purplish tip; standard c. 8 × 4.5 mm, slightly violin-shaped, wedge-shaped at the base, the margins thickened and infolded over 3–4 mm from the base; wings with a curved claw 2–2.5 mm long, the blade 6–7 × 3.5–4 mm, oblong, laterally pouched, auriculate; keel as long as the wings, curved, pointed, the claw c. 2 mm long.
Stems erect and up to 60 cm tall, or procumbent and up to 150 cm long, up to 2.5 mm in diameter, woody below, with ± densely appressed or ascending white or yellowish hairs up to 0.5 mm long, glabrescent, the epidermis at first cream-coloured, later dark purple or blackish when dry; internodes usually up to 35 mm long (longer in plants growing in shade).
Umbels 3–5(7)-flowered; peduncle 10–50(65) mm long, strigose; foliage leaf on the peduncle 3-foliolate; pedicels 1.5–2 mm long, strigose; glands (bracts) at the base of the pedicels blackish, pronounced.
Calyx appressed pubescent; hypanthium c. 0.7 mm long, calyx tube c. 2 mm above the insertion of the stamens; calyx lobes 1.8–2.5 mm long, triangular-acuminate.
Filament sheath c. 5 mm long, often papillose near the base; free parts of the shorter filaments c. 2 mm long, those of the longer filaments c. 3 mm long.
Ovary c. 5 mm long, glabrous, 18–24-ovulate; style 3.5 mm long, slightly curved upwards.
Seeds 11 or less, c. 1.5 mm long, ovoid, dark grey or greyish-brown.
Pod up to 28 × 2.5 mm, reddish-brown to greyish-brown.
Undershrub from a woody rootstock.