Perennial herb 15-30 cm tall, with creeping rhizome. Basal lvs few, 3-foliolate; petioles glabrous or very sparsely hairy, shallowly sulcate, 10-20 cm long; leaflets lobed up to 1/2 way, sometimes more deeply, petiolulate, serrate, glabrous or very sparsely hairy on surfaces, bristly on margins, light green above, paler beneath, cuneate at base, acute at apex, 3-6 × 3-6 cm. Subfloral lvs similar, smaller. Fls erect, 2-3 cm diam., solitary; peduncles tomentose, 4-10 cm long. Perianth segments (5)-6-7-(9), white, flushed with pink or purple beneath, glabrous. Achenes downy, in nodding heads.