Stem 60--70 cm tall, glabrous, simple or branched. Leaf blade 4--7 cm wide, base cordate; primary lobes separate for at least 90% of blade radius; central lobe rhombic, 3-lobulate, distally few lobulate and dentate, apex acute; ultimate lobules narrowly ovate; proximal leaves usually withered. Raceme 6--19 cm, 4--15-flowered, retrorsely puberulent and yellow glandular puberulent; proximal bracts leaflike, distal ones linear or lanceolate, 0.8--1.4 cm. Pedicels 1.2--5 cm; bracteoles distal, lanceolate, lanceolate-linear, or subfiliform, 3.5--13 × 0.2--2 mm. Sepals blue-purple, abaxially puberulent; spur subulate, 2--2.2 cm, recurved, base 2.5--3.5 mm in diam.; other sepals 1.3--1.8 cm. Petals undivided, glabrous. Staminode limb ovate, 2-cleft, yellow barbate. Filaments glabrous. Carpels 3, sparsely puberulent only on ventral suture. Fl. Jul.
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