Leaves 4--8; petiole 6--25 cm, sparsely villous or glabrous; leaf blade 3-parted, orbicular-reniform, 3--6 × 4--9 cm, sparsely pubescent or glabrescent, base cordate; segments sessile; central segment 3-lobed, broadly rhombic or rhombic-obovate, lobes lobulate, ultimate lobules ovate or narrowly so; lateral segments unequally 3-parted, obliquely flabellate. Scapes 2--6, 15--40 cm, sparsely pubescent or glabrous; cyme 2--5-flowered. Involucral bracts 3--5; bract blade unequally 3-parted or 3-lobed, rhombic or obovate, 4--7 cm, margin dentate or entire. Pedicel 2--5 cm, sparsely pubescent or glabrous. Sepals 5 or 6(--10), white or pinkish, obovate or narrowly so, 10--18 × 5--10 mm, glabrous, basal veins 3--5, vein anastomoses 1--3. Stamens 4--5 mm; filament slightly dilated; anther narrowly ellipsoid. Ovary glabrous or pubescent. Achene body broadly ovoid or subglobose, 5--6 × 4--5 mm, winged, glabrous or pubescent; style curved, ca. 1 mm. Fl. Apr--Jul.
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