Stem 30--80 cm tall, retrorsely puberulent, branched distally. Leaf blade 4--9 cm wide, base deeply cordate; primary lobes separate for at least 90% of blade radius; central lobe rhombic, 2 or 3 × dissected, distally few lobulate or few dentate, apex acute; ultimate lobules lanceolate to linear, 0.5--2.5(--4) mm wide; proximal leaves usually withered. Compound raceme pyramidal, each branch 3--15 cm, 3--12-flowered, densely retrorsely puberulent, often mixed with yellow, glandular hairs; bracts linear. Pedicels 3--7.5 cm; bracteoles borne near middle of pedicel or distally, green, subulate, 3--6 mm. Sepals purple-blue, abaxially puberulent, adaxially glabrous or puberulent; spur subulate, 2--2.5 cm, base 2--3.5 mm in diam.; other sepals 1--1.6 cm. Petals undivided, glabrous. Staminode limb broadly obovate, 5--6 mm, undivided, emarginate, or 2-lobulate, yellow barbate. Filaments pilose or glabrous. Carpels 3; ovaries densely puberulent. Fl. Jun--Sep.
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