Stems 15--40 cm tall, sparsely spreading pubescent, unbranched or apically branched. Leaves basal, few, 2-ternate; petiole 3.9--19 cm; leaf blade abaxially sparsely pubescent or glabrous, adaxially glabrous; lateral leaflets obliquely flabellate to obovate; central leaflet broadly obovate to flabellate, 0.9--2.4 × 1.3--3.3 cm, 3-lobed and segments with 2 or 3 obtuse teeth. Inflorescences 1--3-flowered; bracts linear-lanceolate, 4--7 mm, 1--3-lobed. Flowers 3.5--4.2 cm in diam. Pedicel 1--2.5 cm. Sepals spreading, bluish purple, elliptic-obovate, 1.5--2.5 × 0.7--1.5 cm, apex obtuse to subrounded. Petals yellowish white or white, suberect, broadly oblong, 0.7--1.2 cm, apex obtuse; spur purple, 1--1.6 cm, apically incurved into a hook. Stamens as long as petals; anthers yellow or grayish, broadly ellipsoid, ca. 2 mm. Staminodes white, ca. 8 mm. Pistils 5, glabrous; ovary ca. 6 mm. Follicles 1.5--2.5 cm; persistent styles ca. 5 mm. Fl. Jul.
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