Stem 70--100 cm tall, sparsely yellowish hispid proximally, glabrous distally, simple. Leaf blade 7--11 cm wide, base cordate; primary lobes separate for at least 90% of blade radius; central lobe rhombic or broadly so, 3-cleft, distally 3-dentate or incised dentate, apex long acuminate; ultimate lobules triangular or lanceolate; proximal leaves withered. Compound raceme ca. 34 cm, lax, ca. 20-flowered, glabrous; proximal bracts leaflike or linear, distal ones linear-subulate. Pedicels 7.5--8.5 cm; bracteoles distal, linear-subulate, 1.5--3 mm. Sepals blue-purple, abaxially sparsely puberulent along midvein; spur subulate, ca. 2 cm, recurved, base ca. 3.5 mm in diam.; other sepals 9--10 mm. Petals distally erose, ciliate. Staminode limb ovate, 2-cleft, yellow barbate. Filaments glabrous or pilose. Carpels 3, glabrous. Fl. Jul.
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