Anemone udensis Trautv. & C. A. Mey.

Rhizome prostrate or ascending, long, 2--6 mm in diam., sometimes with thickened nodes. Scalelike leaves several, 4--6 mm. Leaf solitary; petiole 5--15(--20) cm, villous; leaf blade ternate, rhombic, 3--4 × 3.5--4.5 cm, abaxially sparsely villous, adaxially glabrous; petiolules 3--5 mm; central leaflet distally 3-lobed, obovate, base cuneate, margin crenate to incised dentate, apex obtuse to acute; lateral leaflets similar to central one, ovate to obovate, oblique. Scape 15--25(--40) cm, 1-flowered, spreading pubescent. Involucral bract petiole 2--3 cm × 1--2 mm; bract blade ternate, similar to that of leaves but larger, pentagonal, 4--7 × 5--7 cm, abaxially sparsely puberulent; petiolules 3--5(--10) mm; central segment 3-lobed or undivided, rhombic-obovate, base cuneate, margin crenate to serrate, apex obtuse to broadly acute; lateral segments obliquely elliptic, smaller than central one. Pedicel 5--10 cm, puberulent. Sepals 5, white, obovate to ovate, 10--18 × 5--13 mm, appressed pilose or subglabrous, basal veins 5--7, vein anastomoses 5--9. Stamens 4--6 mm; filament filiform; anther ellipsoid. Ovary cylindric, 2.5--3 mm, densely puberulent; style straight, short. Achene body fusiform, slightly compressed, 2--3 × ca. 1.5 mm, pilose (hairs 0.1--0.2 mm), base and apex narrowed; style straight or slightly curved, conic, 2--2.5 mm. Fl. May--Jun.

E Jilin, Liaoning [N Korea, Russia (Far East)].

Grassy places in forests or on shady slopes; 200--500 m.

Anemonoides udensis (Trautvetter & C. A. Meyer) Holub.