Stem (0.5--)1--1.6 m tall, spreading puberulent and yellow glandular puberulent, branched distally. Leaf blade 8--10 cm wide, base cordate; primary lobes separate for at least 75% of blade radius; central lobe rhombic, 3-lobulate, distally few lobulate and dentate, apex acute; ultimate lobules narrowly ovate; proximal leaves usually withered. Compound raceme pyramidal, to 40 cm, many flowered, yellow glandular puberulent; proximal bracts leaflike, distal ones small, subfiliform. Pedicels 1.5--4 cm; bracteoles distal, subulate or filiform, 2--5 mm. Sepals blue-purple, abaxially sparsely puberulent; spur subulate, (1.6--)2--2.2 cm, base 3--4 mm in diam.; other sepals 1--1.2 cm. Petals 2-lobed, glabrous. Staminode limb oblong, 2-cleft, yellowish barbate. Filaments glabrous. Carpels 3, glabrous or ovary puberulent. Fl. Jun--Jul.
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