Stem 70--100 cm tall, densely appressed puberulent and glandular puberulent near base, glabrate on other parts, simple. Leaf blade 5--10 cm wide, base cordate; primary lobes separate for at least 60% of blade radius; central lobe rhombic, 3-cleft, distally sparsely lobulate-dentate, apex acute; ultimate lobules lanceolate; proximal leaves usually withered. Raceme ca. 28 cm, ca. 30-flowered, densely appressed puberulent; proximal bracts 3-sect, distal ones undivided, linear. Pedicels 1--3.5 cm; bracteoles distal, narrowly linear, 4--8 mm. Sepals purple, abaxially densely appressed puberulent; spur subcylindric or cylindric-subulate, 1.2--1.4 cm, straight, base 2.5--3.5 mm in diam.; other sepals 1--1.4 cm. Petals emarginate, glabrous. Staminode limb obovate, 2-cleft, yellow barbate, long ciliate. Filaments glabrous. Carpels 3, glabrous. Fl. Jun--Jul.
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