Stem 55--100 cm tall, hispidulous or hispid, branched. Leaf blade 7--13 cm wide, base cordate; primary lobes separate for at least 75% of blade radius; central lobe rhombic or broadly so, 3-lobulate, distally incised dentate, apex acute; ultimate lobules ovate or narrowly so; proximal leaves withered or not. Compound or simple raceme 12--45 cm, 5--15-flowered, densely strigose and often yellow glandular puberulent; proximal bracts leaflike, distal ones linear-lanceolate. Pedicels 1.2--6(--10) cm; bracteoles distal, narrowly lanceolate, 5--12 mm. Sepals blue-purple, abaxially puberulent or ± strigose; spur subulate, 1.6--2.2 cm, base 2--3.5 mm in diam.; other sepals 1--1.5 cm. Petals undivided, glabrous. Staminode limb oblong, 4.5--6 mm, 2-lobed, white or yellow barbate. Filaments glabrous or sparsely hairy. Carpels 3; ovaries puberulent. Fl. Jul--Nov.
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