Herbs, perennial, 12-20(-30) cm tall, glabrous; stems and petioles of radical leaves attenuate to filiform underground base. Storage roots several, densely fascicled, spindle-shaped, 10-15 × 3-5 mm, sessile. Stems 1 or 2, erect, slender, simple, with 1 leaf in upper 1/2. Radical leaves few; petiole 3-12 cm, slender; blade 0.5-2 × 1-3 cm, ternate; leaflets shortly stalked to subsessile, obovate, entire or often slightly 2-or 3-divided at apex. Cauline leaves: petiole 0.5-2 cm; blade trifoliolate; leaflets subsessile, elliptic, 1-3 × 0.5-1.5 cm. Raceme very dense, 2-8-flowered, not elongating in fruit; bracts 8-18 mm, lowermost bracts broadly elliptic, entire or often deeply or slightly 3-divided; others ovate to lanceolate, entire. Pedicel 3-9 mm, in fruit to 7-15 mm and erect. Sepals 0.5-1 mm, fimbriate-dentate. Corolla blue with white markings; upper petal navicular, 12-18 mm, subacute, with narrow crest; spur straight to slightly downcurved at apex, cylindric, 7-10 mm; nectary 1/2-2/3 as long as spur; lower petal broadly obovate, 8-14 mm, base narrow, often with small gibbosity, apex shortly acuminate; inner petals 7-10 mm. Stigma with 4 marginal simple papillae; geminate papillae lateral and on basal lobes. Capsule pendent from erect pedicel, elliptic, 11-15 × 3-4 mm, 18-25-seeded; style ca. 2.5 mm. Seeds 0.8-1 mm, smooth. Fl. and fr. Jul-Sep.
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