Japan Flora: Dwarf evergreen glabrous shrub with prostrate slender much-divided branches, about 5 mm. thick at base; leaves petioled, 3-6 cm. long, the leaflets 7-9, subcoriaceous, broadly oblanceolate to obovate, 6-15 mm. long, 4-8 mm. wide, acute, with irregular incisions, sometimes subtrilobed, lustrous and deep green above, the stipules linear; scapes about 10-20 cm. long, erect, with a 3- to 5-parted leaf, densely puberulent above; flowers solitary, white, 2-3 cm. across; calyx-segments broadly lanceo­late, long-acute, slightly recurved after flowering, the bracts of the caliculus short, lanceolate; petals orbicular; achenes rather many, about 2 mm. long, fusiform, with white ascend­ing hairs； styles elongate after anthesis, filiform, about 3 cm. long, long white spreading-plumose. June-Aug. Wet slopes and sometimes sphagnum bogs in high mountains.

Hokkaido, Honshu (n. and centr. distr.).  Kuriles, Sak­halin, Kamchatka, and Aleutians.