Petals pink or somewhat violet, or perhaps yellow outside, equalling or exceeding the calyx; standard 7–13 mm long, broadly spathulate to obovate-cuneate; wings and keel ± equal in length, slightly shorter to about equalling the standard, with the claw about half as long as the limb.
Leaves unifoliolate; petiole c.1 mm long; lamina up to 8 × 1.5 cm, linear-oblong or linear-lanceolate, 6–10 times as long as broad, the upper surface glabrous, the lower surface appressed or spreading-pubescent; stipules triangular-linear.
Calyx 4–10 mm long, pubescent, the teeth long-acute, subequal, 1.5–4 times as long as the tube, the two upper ones only slightly joined at the base.
Stems decumbent to suberect, up to 0.4(1) m high, branching in the lower part; young stems appressed-or spreading-pubescent.
Flowers in groups of 1–3 in axils of foliage leaves; pedicels 1–15(17) mm long.
Ovary pubescent on sutures, glabrous or pubescent on surfaces; style glabrous.
Pod 20(27)–40 × 3.5–5 mm, sutures pubescent, surfaces glabrous or pubescent.
A slender, probably short-lived perennial or perhaps biennial.
Stamen tube open dorsally.