Roots not seen. Stems ascending, 30-50 cm, upper part with 3 or 4 leaves, usually branched. Blade of lower cauline leaves shortly petiolate, triangular-ovate, 4-8 × 2.5-7 cm, bipinnate; primary leaflets 2 or 3 pairs, shortly petiolate; secondary leaflets sessile, entire or ± split into 2 or 3 acute ovate segments. Upper leaves smaller, sessile. Racemes subsecund, densely 13-22-flowered, at fruiting elongated; bracts 3-4 mm, often slightly dentate apically. Pedicel slender, 5-10 mm, at fruiting to 10-20 mm. Flowers pale mauve. Sepals ovate, 3-5 × ca. 2 mm, dentate, acuminate. Outer petals with short dentate crest, apex acuminate, laterally with distinct auricles; upper petal 21-25 mm; spur cylindric, 9-11 mm; nectary 1/2-3/5 as long as spur; lower petal with much broader claw than in Corydalis kingii, apically with distinct rounded auricles; inner petals 10-11 mm. Stigma wider than long, with 2 large flat deltoid apical papillae; geminate papillae indistinct or absent. Capsule linear, densely papillose-puberulent. Fl. and fr. Jul-Sep.
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