Stems (25-)40-80(-180) cm; base usually reddish, pubescent. Leaves cauline and basal; basal leaves 0-5 at anthesis; cauline leaves 2-8 at anthesis; petiole 0.5-8 cm, petioles of proximal leaves long-pubescent. Leaf blade pentagonal, 1.5-5 × 2.5-8 cm, long-pubescent, especially abaxially; ultimate lobes 0-18, width 4-20 mm (basal), 2-9 mm (cauline). Inflorescences (9-)15-40(-160)-flowered, dense to open; pedicel 0.3-2.5(-6) cm, puberulent; bracteoles 1-5(-8) mm from flowers, green, sometimes white-margined, linear-lanceolate, 2-6(-8) mm, puberulent. Flowers: sepals violet to white, ± puberulent, lateral sepals spreading to forward pointing, 7-10(-13) × 3-6(-8) mm, spurs gently upcurved, ascending 0-30° above horizontal, (6-)9-13(-16) mm; lower petal blades elevated, ± exposing stamens, 3-7 mm, cleft 1-2(-4) mm; hairs centered, densest on inner lobes near base of cleft, white. Fruits 8-20 mm, 2.2-4 times longer than wide, glabrous. Seeds echinate, appearing fuzzy to naked eye; seed coat cells with margins straight, surfaces sparsely pustulate.
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