Stem 40--60 cm tall, glabrous or proximally sparsely hispid, branched distally. Leaf blade 7--16 cm wide, shortly strigose or hispid, base cordate; primary lobes separate for at least 60% of blade radius; central lobe rhombic, 3-lobulate, distally few lobulate or few dentate, apex acute; ultimate lobules narrowly ovate; proximal leaves usually withered. Corymb 3--10 cm, 3--5-flowered; bracts leaflike or undivided, lanceolate. Pedicels 2--3.5 cm, sparsely yellow glandular puberulent; bracteoles borne near middle of pedicel or distally, narrowly linear or subulate, 4--8 mm. Sepals purple-blue, abaxially sparsely puberulent; spur subulate, 1.7--2 cm, slightly recurved, base 2.5--3.5 mm in diam.; other sepals 1.4--1.7 cm. Petals 2-lobulate, glabrous. Staminode limb oblong, 2-lobed, yellow barbate. Filaments glabrous. Carpels 3; ovaries sparsely pilose or glabrous. Fl. Mar--Jun.
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