Herbs, perennial, 40-60 cm tall, usually papillose-scabrid on margins and veins; stems and petioles of radical leaves attenuate to filiform underground base. Storage roots sessile, oblong, 20-30 × 2-3 mm. Stems 1-3, robust, conspicuously ridged, branched, with 3-6 leaves in upper 1/2; uppermost leaves small, with axillary racemes. (Radical leaf: petiole ca. 15 cm, slender, weak, near base attenuate; blade triternate; primary pinnae with petiolule 3-4 cm; secondary pinnules with petiolule 3-5 mm; tertiary segments sessile, entire or middle segments deeply 2-or 3-lobed.) Cauline leaves: lower ones petiolate, upper ones sessile, 3-10 × 2-6 cm; blade glaucous abaxially, dark green adaxially, pinnate with shortly stalked to subsessile pinnae deeply twice ternatisect into lanceolate acute lobes. Racemes 2-8 cm, densely 10-15-flowered; bracts 7-12 mm, deeply palmatisect into narrow acute lobes, lower one more divided, upper one lanceolate with a few teeth only. Pedicel 3-5 mm, recurved in fruit. Sepals whitish, 1-1.5 × ca. 1 mm, deeply dentate. Corolla yellow, veins distinct, keels green to orange; upper petal rhombic, 19-21 mm, acuminate, crest ca. 1.5 mm wide, subobtuse, hardly decurrent on spur; spur straight to slightly curved, cylindric, 12-14 mm; nectary ca. 1/2 as long as spur; lower petal obovate, acute, narrowed toward base, usually with diminutive spurlet at very base, 8-9 mm, margin undulate-dentate, crest short; inner petals 7-8 mm. Stigma with marginal papillae: median 2 distinct, lateral broad, diffuse; geminate papillae sublateral (clearly submarginal) and on well-developed basal lobes. Capsule obovoid, 8-11 × ca. 3 mm, with papillose lines, 2-5-seeded; style ca. 2.5 mm. Seeds in 1 row. Fl. and fr. around Aug.
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