Japan Flora: Per­ennial herb with stout rhizomes; stems 30-70 cm. long, long- pubescent; leaves obovate to narrowly so； free portion of stipules linear-lanceolate, green and laciniate to deeply toothed in the cauline leaves; leaflets 15-29, the lower gradually smaller, the upper oblanceolate to narrowly oblong, 2-5 cm. long, 8-15 mm. wide, pinnately parted nearly to the midrib with acute lobes, nearly glabrous above, densely white-woolly- tomentose beneath; flowers many, 10-15 mm., sometimes to 20 mm. across; calyx-segments narrowly ovate, acute; bracts of caliculus lanceolate; anthers ovoid; receptacle hairy; achenes broadly ovoid, longitudinally rugose, about 1.3 mm. long, keeled on back; styles rather stout, about 1 mm. long.  June-Aug. Sandy sunny places, especially along rivers in low­lands.

Honshu, Shikoku, Kyushu. Korea, Manchuria, Amur, China, and Formosa.