Stems (60-)100-200(-300) cm; base usually green, glabrous, glaucous. Leaves cauline, 15-20, absent from proximal 1/5 of stem at anthesis; petiole 1-14 cm. Leaf blade round to pentagonal, 2-11 × 3-18 cm, margins seldom laciniate, glabrous; ultimate lobes 5-9(-15), width 5-24(-35) mm, tips abruptly tapered to mucronate apex; midcauline leaf lobes more than 3 times longer than wide. Inflorescences (13-)40-90(-140)-flowered; pedicel 1-3(-5) cm, puberulent or glabrous; bracteoles 2-6(-10) mm from flowers, green to blue, linear, 2-7 mm, puberulent or glabrous. Flowers: sepals bluish purple to lavender, puberulent, lateral sepals forward pointing to spreading, 8-14(-21) × 3-6 mm, spurs straight, ascending to ca. 45° 10-15(-19) mm; lower petal blades ± covering stamens, 4-6 mm, clefts 1-3 mm; hairs centered, mostly near base of cleft, white. Fruits 9-20 mm, 3.5-4.5 times longer than wide, glabrous to puberulent. Seeds wing-margined; seed coat cells elongate but short, surfaces smooth or roughened. 2 n = 16.
Sub-alpine to alpine meadows and streambanks. Meadows, wet thickets, bogs, streamsides and open coniferous woods from sea level to 3200 metres.
Can be grown by cuttings or seedlings. Seeds needs stratification.
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