Rhizome branched, ascending, short, 2--3 mm in diam. Leaves 3--5; petiole 5--10(--12) cm, sparsely puberulent, base sheathing; leaf blade 3-sect, cordate-pentagonal, 3--5 × 4--8 cm, abaxially sericeous-villous along veins, adaxially subglabrous, base subcordate, apex pungent; segments shortly petiolulate; central segment 3-parted, rhombic, secondary lobes 2-lobed, ultimate lobules acuminate; lateral segments unequally 2-parted, obliquely rhombic. Scape 5--10(--20) cm, densely sericeous-villous; cyme 1-flowered. Involucral bracts 3, sessile; bract blade similar to that of leaves, 3-parted, 3--4 cm, margin with many long, acute teeth. Pedicel ca. 6 mm, spreading villous. Sepals 5, white, elliptic, 20--25 × 10--15 mm, abaxially appressed sericeous, basal veins 5--9, vein anastomoses more than 10, apex obtuse. Stamens 3--6 mm; filament filiform; anther ellipsoid, ca. 1 mm, apex rounded. Ovary densely pubescent; style ca. 2 mm.
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