Erect laxly branched annual, up to 1 m. tall.. Stem thinly appressed or spreading pubescent.. Leaves simple or 1-foliolate; blades mostly lanceolate, up to 60–190 mm. long and 4–21 mm. wide, with the lowermost ones usually shorter and elliptic, glabrous or with scattered hairs above, thinly puberulous beneath; petiole ± 1–3 mm. long.. Stipules subulate-caudate, 1–3(–5) mm. long.. Racemes lax, up to 10–32 cm. long, ± 6–24-flowered; bracts subulate, 1–2·5 mm. long; bracteoles inserted at the base of the calyx, linear, up to 2–4 mm. long.. Calyx 5–6(–9) mm. long, subglabrous to thinly pubescent; lobes narrowly attenuate-triangular, longer than the tube.. Standard elliptic, cream or pale yellow, veined reddish-brown and glabrous outside; wings much shorter than the keel; keel shortly rounded in the lower half, with a long slightly recurved untwisted beak, 11–14(–17) mm. long.. Pod shortly stipitate, subcylindrical, slightly broadened upwards, up to 24–28 mm. long, 7–8 mm. across, glabrous except for a few short hairs along the upper side, ± 24–28-seeded.. Seeds oblique-cordiform, up to 2 mm. long, smooth, bottle-green to brown.