Stems 40--60 cm tall, sparsely pubescent or glandular hairy, apically branched. Basal leaves several, 1-or 2-ternate; petiole 8--25 cm; leaf blade abaxially sparsely pubescent, adaxially glabrous; lateral leaflets obliquely obovate, unequally 2-lobed; central leaflet rhombic-obovate to broadly rhombic, 2.5--5(--8.5) × 2.5--4(--5) cm, 3-lobed and toothed. Stem leaves several, long petiolate, 2-ternate lower on stem, ternate apically. Inflorescences cymose, few flowered; bracts 3-lobed or undivided, narrowly oblong. Flowers ca. 4 cm in diam., densely glandular pubescent. Pedicel 1--6 cm. Sepals purple, narrowly ovate, (1.6--)2--2.6 × 0.7--1 cm. Petals purple, suberect, broadly oblong, 1.2--1.5 cm, apex rounded-truncate; spur 1.7--2 cm, sparsely pubescent, apically incurved into a hook. Stamens to 1.2 cm; anthers oblong. Staminodes ca. 5.5 mm. Pistils 5, densely glandular hairy. Follicles (1.2--)1.5--2 cm, conspicuously striate; persistent styles 5--7 mm. Seeds ca. 2 mm. Fl. May--Jun.
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