Petiole 13--25 cm, glabrous; leaf blade ovate, 7--15.5 × 5.5--14 cm, 5-sect, subleathery, abaxially glabrous, adaxially sparsely puberulous on veins, base cordate; lateral segments similar to central one but smaller, unequally 2-lobed or parted; central segment petiolulate, rhombic-lanceolate, 5.5--14 cm, pinnately divided; segments 4 pairs, margin acute serrate, apex attenuate. Scapes 23--28 cm tall, glabrous. Inflorescences ca. 6-flowered; bracts oblong to lanceolate, 3-lobed or acutely serrate. Flowers unknown. Follicles 3--6 mm, stipe nearly as long as follicle. Fr. May.
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