Herbs, perennial, 25-50 cm tall, ?glabrous. Rhizome short, densely set with fleshy scales and petiolar bases. Stems 1 to few, sulcate, with (1 or)2 leaves in upper 1/3-1/2 and an early withering leaf at extreme base; early branched from both upper leaves. Radical leaves few, early withering, long stalked, small. Cauline leaves: petiole 0.5-4 cm; blade 3-6 × 3-8 cm, biternate, primary leaflets with petiolule ca. 1 cm; ultimate leaflets sessile, subflabellate, basally cuneate, twice ± deeply ternatisect into oblong lobes. Raceme lax, 7-12-flowered; lower bracts like upper leaf, 3-5 cm; middle smaller, biternatisect; upper narrowly oblanceolate, 5-10 mm, entire. Lower pedicels very long, 25-45 mm, upper ones 10-20 mm, thin. Sepals ca. 1 × 1-1.5 mm, shallowly to deeply dentate. Corolla ?purplish blue. Outer petals with narrow rhombic acute to shortly acuminate limb, not or very narrowly crested; upper petal 26-31 mm; spur almost straight, narrowly cylindric, 13-17 mm; nectary ca. 1/2 as long as spur; lower petal with long claw and narrow rhombic acute limb, 14-16 mm; inner petals 12-15 mm. Stigma subquadrangular; marginal simple papillae: 2 median large, distinct, lateral diffuse; geminate papillae lateral (often missing) and in basal corners; basal lobes not developed. Capsule reflexed from straight pedicel, linear, 20-28 × 1.5-2 mm, 13-20-seeded; style ca. 2.5 mm. Seeds in 1 row, ca. 1.5 mm. Fl. May-Jul, fr. Jul-Aug.
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