Erect branching annual or perennial plant with a taproot, up to 140 cm. tall, usually smelling of coumarin; branches appressed pilose or strigose.. Stipules subulate, appressed pilose, 1.5–3 mm. long; rhachis up to 2 cm. long, including a petiole of 1–6 mm., prolonged 1–3 mm. beyond the lateral leaflets; leaflets 5 or 7, sometimes 3 or 9, elliptic to cuneate-oblong, rounded at the apex, apiculate, up to 11 mm. long and 5 mm. wide but often, especially under dry conditions, much smaller, yellowish and appressed pilose or strigulose above, greenish and strigose beneath.. Racemes 4–7-flowered, the peduncles pilose or glabrescent, up to 2 cm. long; bracts caducous, pubescent, ± 1 mm. long; pedicel pubescent, ± 1 mm. long.. Calyx strigose, 1.5 mm. long, divided to the middle; lobes triangular.. Corolla pubescent outside.. Stamens 4–5 mm. long.. Pod subtetragonal, 18–25 mm. long, ± 2 mm. wide and 1.7 mm. thick, appressed strigulose, the hairs ± 0.4 mm. long, 8–14-seeded; endocarp spotted.. Seeds orange-yellow, cuboid, 1 by 1 mm.. Fig. 39/2, p. 239.