Japan Flora: Perennial herb with more or less coarse pubescence; rhizomes stout, short, sparsely branching; stems 10-20 cm. long, few-leaved; stipules brown, subscarious, the segments broadly ovate, obtuse to subacute, green and ovate on the cauline leaves; leaflets 3, broadly obovate-cuneate, 1.5-3 cm. long and nearly as wide, slightly paler beneath, with few usually ovate acute teeth on each side except toward the base; flowers 1-10, about 20 mm. across; calyx-segments narrowly ovate, acute, 4-5 mm. long; bracts of caliculus oblong, obtuse; petals obovate-orbicular, about twice as long as the calyx-segments; receptacle short- pilose; achenes ovoid, smooth, 1.2-1.5 mm. long, nearly rounded on back; styles filiform, about 3 mm. long. July-Aug. Dry alpine slopes.

Hokkaido, Honshu (centr. and n. distr.); rather common and slightly variable. 

var. lasiocarpa H.Hara. Carpels long-hairy. Hokkaido and Honshu (n. distr.).

Japan Flora: Perennial herb with stout short-creeping and branching rhizomes; stems 10-20 cm. long, 1- or 2-leaved; radical and cauline leaves beneath and the petioles with densely woolly white tomentum; stipules scarious, reddish brown, the free segments broadly lanceolate, acute, green and sometimes dentate in the cauline ones; leaf­lets 3, obovate-oblong to broadly ovate, 15-25 mm. long, 1 分니 7 mm. wide, obtuse, slightly silky-pubescent and green above, with ovate marginal teeth; flowers 1-5, 1.5-2 cm. across; calyx-segments broadly lanceolate, acute; bracts of caliculus narrowly lanceolate or broadly linear; petals about 1.5 times as long as the calyx-segments, obovatc-orbicular; receptacles short-pilose; achenes ovoid, about 1.5 mm. long, smooth, glabrous. July-Aug. Rocks and dry slopes in alpine regions. 

Hokkaido, Honshu (centr. distr.); rare. Widespread in northern and alpine regions of the N. Hemisphere.