Plants 27-50 cm tall. Stem 23-37 cm, lower part glabrescent or glabrous, upper part sparsely to loosely covered with subappressed hairs 0.5-1 mm. Leaves 10-15 cm; stipules 8-12 mm, high adnate to petiole, at margins with hairs up to 2 mm; petiole 2-3 cm, like rachis sparsely to loosely spreading hairy; leaflets in 4-7 pairs, remote, (14-)20-30 mm, abaxially rather densely subappressed hairy, adaxially glabrous. Racemes sessile, 3-5 cm, densely many flowered, at fruiting time elongated up to 8 cm; bracts 8-10 mm, villous at margins. Bracteoles 5-7 mm. Calyx at anthesis 12-14 mm, tubular to slightly inflated, hairy only in upper part and at teeth; teeth 4-5 mm; fruiting calyx ovoid to inflated globose, 17-22 mm, finely netlike nerved, nearly glabrous with exception of upper margins and teeth. Petals yellow; standard ± orbicular, 15-20 mm, apex slightly emarginate; wings as long as standard; keel 14-18 mm. Legumes with a slender stipe 3-4 mm, included in calyx, 5-9 mm, ca. 3.5 mm high and wide, with a beak 1-2 mm; valves thin, glabrous.
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