Stem ca. 65 cm tall, sparsely yellowish glandular puberulent, simple. Leaf blade 6--9 cm wide, base cordate; primary lobes separate for less than 60% of blade radius; central lobe cuneate-rhombic or obovate-rhombic, 3-lobulate, distally rounded 2--4-dentate, apex acute; ultimate lobules lanceolate; proximal leaves usually withered. Raceme 13--14.5 cm, 4--8-flowered, yellowish glandular puberulent and retrorsely puberulent; proximal bracts leaflike, distal ones lanceolate-linear. Pedicels 1.8--4.2 cm; bracteoles distal, linear, 9--10 mm. Sepals purple-blue, abaxially sparsely yellowish puberulent near apex; spur subulate, 1.9--2.6 cm, base 3--4 mm in diam.; other sepals 2--2.4 cm. Petals 2-lobed, pilose. Staminode limb suboblong, 2-lobed, yellow barbate. Filaments glabrous. Carpels 3; ovaries sparsely puberulent only along ventral suture. Fl. Sep--Oct.
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