Herbs, perennial. Tuber rounded, 1-2.5 cm in diam. Stems ascending, 10-25 cm, slender, usually with many axillary stems from large prophyll, rarely branched also from cauline leaves. Leaves glaucous, thin, long stalked; blade twice to 3 × ternately to pinnately divided, petiolules distinct; ultimate leaflets entire or deeply cleft into ovate to lanceolate entire obtuse lobes, 4-12 × 2-3 mm. Raceme longer than leaves, laxly 5-12(-22)-flowered; bracts rhombic-ovate to lanceolate, ca. equal to or slightly shorter than pedicels, entire. Pedicel 5-15 mm, thin and slender. Flowers gracefully nodding. Sepals small. Outer petals pale pink to white with purple to green dark keels, with broad emarginate limb; upper petal 2-2.5 cm; spur slightly upcurved, 10-14(-17) mm, attenuate; nectary very short, 1-1.5 mm, apex obtuse; lower petal broad, flat, claw short with shallow sac; inner petals 7-9 mm, with broad pale crest not extending beyond apex. Stigma nearly orbicular, with 8 papillae. Capsule broadly lanceolate, 11-17 × ca. 4 mm. Seeds 1.7-2 mm, with long narrow elaiosome with brownish base. Fl. and fr. May(-Jun).
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