Stem 45--60 cm tall, strigose, simple or branched distally. Leaf blade 6--15 cm wide, base cordate; primary lobes separate for at least 60% of blade radius; central lobe rhombic or rhombic-obtrapezoid, 3-cleft, distally incised dentate, apex acute; ultimate lobules narrowly ovate or lanceolate; proximal leaves usually not withered. Raceme 8--20 cm, 8--13-flowered, retrorsely puberulent and sparsely yellow glandular puberulent; proximal bracts leaflike, distal ones lanceolate. Pedicels 1.5--6 cm; bracteoles distal, narrowly lanceolate, 4--15 mm. Sepals blue-purple, rarely white, abaxially sparsely puberulent; spur conic-subulate, 1--1.6 cm, base 3--4 mm in diam.; other sepals 1--1.8 cm. Petals undivided, glabrous. Staminode limb ovate, emarginate or entire, yellow barbate. Filaments glabrous. Carpels 3; ovaries puberulent. Fl. Aug--Oct.
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