Plants 35-65 cm tall, with tangled spreading hairs. Stem 25-50 cm, hairy, glabrescent with age. Leaves 15-27 cm; stipules 8-9 mm, adnate to petiole, hairy; petiole short, like rachis hairy; leaflets in 7-10 pairs, (10-)15-25(-30) mm long and wide, abaxially hairy, adaxially glabrous. Racemes sessile or with a hairy peduncle up to 2 cm, (7-)9-14 cm, many flowered; bracts 5-6 mm, hairy. Bracteoles 3-4 mm. Calyx at anthesis 11-15 mm, tubular to slightly inflated, densely velvety-villous; teeth 4-5 mm; fruiting calyx ovoid to inflated globose, 17-22 mm, finely netlike nerved, velvety. Petals yellow; standard ovate to orbicular, 16-20 mm, apex slightly emarginate; wings as long as standard; keel 15-19 mm. Legumes with a stipe 2-3 mm, included in calyx, 7-9 mm, with a beak 1-2 mm; valves thin, velvety.
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