Annual or short-lived perennial herb up to 25 cm. tall, with a well-developed taproot; branches usually ± prostrate, up to 50 cm. long, everywhere covered with white ± appressed biramous hairs; glandular erect multicellular hairs on stems usually under 0.5 mm. but sometimes up to 2 or 2.5 mm. long, on the leaves very short but usually extending to the leaflet-margins, on the pods usually under 0.5 mm. but sometimes up to 1.2 mm. long.. Stipules linear, spreading, up to 6 mm. long; leaf-rhachis prolonged beyond lateral leaflets, up to 4.5 cm. long including a petiole longer than the basal leaflets; leaflets 7–11, or very rarely 13, elliptic-oblanceolate, 2–2.6 times as long as wide, up to 10 mm. long and 4 mm. wide.. Racemes 6–20-flowered, usually about as long as the subtending leaf, the peduncle 1–2 cm. long, equal to, or half as long as, the rest of the rhachis.. Calyx deeply divided, 0.3–0.8 times as long as the filaments, which are 5–7 mm. long.. Style ± 3 mm. long, bent through 90° a little below the middle.. Pod spreading, straight, up to 17 mm. long, about 1.5 mm. wide, 11–13-seeded; endocarp spotted.
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