Stems unbranched, 10-40(-70) cm; base reddish, pubescence variable. Leaves mostly on proximal 1/4 of stem; basal leaves 2-6 at anthesis; cauline leaves 2-10 at anthesis; petiole 0.4-12 cm. Leaf blade round, 1-6 × 2-12 cm, nearly glabrous; ultimate lobes 5-21, 5 or more extending more than 3/5 distance to petiole, width 1-7(-14) mm (basal), 0.5-6 mm (cauline), widest at middle or in proximal 1/2. Inflorescences 4-18(-48)-flowered, at least 2 times as long as wide; pedicel 0.8-6 cm, pubescence variable; bracteoles 3-8(-18) mm from flowers, green to blue, linear, 3-7 mm, pubescence variable. Flowers: sepals usually bluish purple, rarely white to pink, puberulent, lateral sepals reflexed or spreading, 8-21 × 3-10 mm, spurs decurved to straight, ascending 20-60° above horizontal, 8-23 mm; lower petal blades elevated, exposing stamens, blue to purple, except sometimes in white-flowered plants, 4-11 mm, clefts 2-5 mm; hairs mostly on inner lobes below junction of blade and claw, white, rarely yellow. Fruits 7-22 mm, 3.5-5 times longer than wide, glabrous to puberulent. Seeds winged or not; seed coat cell surfaces smooth or roughened, blunt hairs absent. 2 n = 16.
Can be grown by cuttings or seedlings. Seeds needs stratification.
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