Stem (30--)40--50(--70) cm tall, hispid and yellow glandular puberulent, simple. Leaf blade 6--10 cm wide, base cordate; primary lobes separate for less than 60% of blade radius; central lobe obtrapezoid, 3-lobulate, distally few dentate, apex acute; ultimate lobules ovate; proximal leaves usually not withered. Raceme 10--24 cm, ± remotely 6--13-flowered, hispid and yellow glandular puberulent; proximal bracts leaflike, distal ones ovate-lanceolate or oblong. Pedicels 0.2--1.8 cm; bracteoles distal, narrowly ovate or broadly lanceolate, 8--11 mm. Sepals purple, abaxially hispid; spur subhorizontal, subulate or conic-tubular, 1.1--2 cm, recurved, base 2.5--6 mm in diam.; other sepals 1.4--1.6 cm. Petals emarginate and ciliate or glabrous at apex. Staminode limb ovate, 2-lobed, ciliate. Filaments glabrous. Ovaries densely puberulent. Fl. Aug--Oct.
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