Stem 75--95 cm tall, subglabrous or sparsely puberulent, branched distally. Leaf blade 6--10 cm wide, base cordate; primary lobes separate for at least 75% of blade radius; central lobe rhombic, 3-lobulate, distally unequally dentate, apex acute; ultimate lobules linear to narrowly lanceolate; proximal leaves usually withered. Raceme ca. 20 cm, ca. 9-flowered, retrorsely puberulent; proximal bracts leaflike, distal ones oblong to subulate. Pedicels 2.5--7 cm; bracteoles distal, subulate, 3--5 mm, rarely linear and to 8 mm. Sepals blue, abaxially puberulent; spur cylindric-subulate or subulate, 1.6--1.8 cm, base 3--4 mm in diam.; other sepals 1.6--1.8 cm. Petals apically rounded, glabrous. Staminode limb broadly elliptic, emarginate, yellowish barbate. Filaments glabrous or pilose. Carpels 3; ovaries puberulent. Fl. Jun--Jul.
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