Stem 9--60 cm tall, sparsely pubescent, often glabrescent proximally, simple. Leaf blade 2--9 cm wide, base subtruncate or broadly cuneate; primary lobes separate for at least 90% of blade radius; central lobe rhombic, 1--3 × dissected, distally entire, apex acute; ultimate lobules linear, margin often revolute; proximal leaves withered or not. Raceme 6--32 cm, 2--15-flowered, puberulent; proximal bracts leaflike, distal ones lanceolate. Pedicels 3--14 cm; bracteoles distal, lanceolate or lanceolate-linear, 5--12 mm. Sepals blue-purple, abaxially sparsely puberulent; spur cylindric, 2.1--2.7(--3) cm, base 2.8--4.5 mm in diam.; other sepals 1.4--1.9 cm. Petals emarginate, glabrous. Staminode limb ovate, 2-lobed, sparsely barbate. Filaments pilose. Carpels 3; ovaries densely puberulent. Fl. Aug--Sep.
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