Herbs, biennial, 60-100 cm tall, glabrous. Stems erect, rather stout, base to 1 cm in diam., prominently ridged, leafy throughout, usually branched throughout, accessory branches and racemes sometimes occuring above. Lower leaves with vaginate petioles; leaf blade glaucous abaxially, broadly ovate, 4-13 × 2-9 cm, bipinnate to tripinnate or triternate; primary petiolules 1-2.5 cm; secondary petiolules 2-5 mm; ultimate leaflets deeply or slightly 2-or 3-divided into obovate lobes, apex subobtuse, mucronate. Racemes 5-9 cm, at fruiting to 15 cm, 10-20-flowered, often branched below; bracts ovate to lanceolate, entire, 3-6 mm or lowermost often larger. Pedicel 2-4 mm, reflexed in fruit. Sepals reniform, ca. 1 mm, deeply dentate. Corolla yellow; outer petals with narrow obtuse crests overtopping apex; upper petal 18-20 mm; spur slightly curved, cylindric, 9-10 mm; nectary extended through 2/5-1/2 of spur; lower petal shallowly saccate; inner petals 8-9 mm. Stigma compressed-quadrate, apex with 4 papillae. Capsule cylindric, 10-20(-25) × ca. 2 mm, 4-12-seeded. Seeds in 1 row, black, shiny, nearly orbicular, 1.5-2 mm in diam. Fl. and fr. Jun-Oct.
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