Anemone amurensis Korshinsky

Rhizome branched, prostrate or ascending, 3--10 cm × 1--3 mm. Scalelike leaves 2 or 3. Leaf solitary; petiole 7--15(--20) cm, pilose or subglabrous, base slightly dilated; leaf blade 1- or 2-ternate, pentagonal, 3--3.5 × 5--6 cm, abaxially glabrous, adaxially sparsely puberulent; petiolules 5--15 mm; central leaflet 3-sect or 3-parted, rhombic to broadly ovate, base subcordate to cuneate, margin crenate or dentate, apex obtuse to acuminate; lateral leaflets similar to central one, rhombic to obovate, central segment 3-lobed, rhombic, lateral segments unequally 2-cleft, oblique. Scape (5--)10--25 cm, glabrous; cyme 1-flowered. Involucral bract petiole 10--15 × 3--5 mm, dilated and narrowly winged, pilose; bract blade ternate, similar to that of leaves, ovate to pentagonal, 2.5--4 × 2.5--4 cm, subglabrous or adaxially sparsely puberulent; petiolules 1--2 mm; central segment subpinnately parted, ovate-rhombic, base cuneate, margin serrate, apex acuminate; lateral segments 2-parted, ovate to lanceolate. Pedicel 1.5--5 cm, puberulent. Sepals 5--8, white, obovate to oblong, 10--15(--18) × 5--7(--10) mm, glabrous, basal veins 3--5, vein anastomoses absent, rarely solitary, base long narrowed, apex rounded. Stamens 4--7 mm; filament filiform, base and apex sometimes slightly dilated; anther ellipsoid, connective narrow. Ovary cylindric, 2.2--2.6 mm, densely puberulent, hairs ca. 0.2 mm; style straight, conic, very short; stigma subcapitate. Achene body cylindric to narrowly ovoid, 4--5 × 1.5--2 mm, pilose, hairs 0.1--0.2 mm; style slightly curved, 0.5--1 mm. Fl. Jun.

Forests, scrub, mainly in mountainous regions. E Heilongjiang, E Jilin, SE Liaoning (Fengcheng Xian) [N Korea, Russia (Far East)].

Anemone nemorosa Linnaeus subsp. amurensis Korshinsky, Trudy Imp. S.-Peterburgsk. Bot. Sada 12: 292. 1892; A. nemorosa var. fissa Ulbrich; Anemonoides amurensis (Korshinsky) Holub.