Leaves digitately trifoliolate or sometimes occasional leaves unifoliolate; petiole 1–4(6) mm long, ± appressed-pubescent; leaflets (12)15–40 × (2)3–7(9) mm, oblanceolate to narrowly oblanceolate, the upper surface glabrous, the lower surface appressed-to sometimes almost spreading-pubescent.
Pods strongly coiled or spiralled, ± longitudinally channelled, (4)5–6 mm broad, densely greyish spreading-pubescent or villous.
Petals blue or purple or perhaps rarely yellow; standard 5–7 mm long, spathulate or oblong-cuneate.
Young stem whitish appressed-pubescent to spreading-tomentose.
Calyx 3–5 mm long, appressed-to spreading-pubescent.
An undershrub up to 40 cm high, erect or ascending.
Flowers (1)2–4(6) per axil.