朝鲜白头翁 chao xian bai tou weng

Anemone cernua Thunberg in Murray, Syst. Veg., ed. 14, 510. 1784; A. cernua var. koreana Yabe ex Nakai; Pulsatilla cernua var. koreana (Yabe ex Nakai) Y. N. Lee; P. koreana (Yabe ex Nakai) Nakai ex Mori.

Plants 14--28 cm tall. Rhizome to 10 cm, 5--7 mm in diam. Leaves 4--6, not fully expanded at anthesis; petiole 4.5--14 cm, with thick long pilose hairs; leaf blade ovate, 3--7.8 × 4.4--6.5 cm, 3-foliolate, abaxially thickly pilose, adaxially glabrous, base cordate; lateral leaflets sessile or subsessile, pinnately divided, lobes sessile; central leaflet long petiolulate, broadly ovate, divided to base into 3 segments, central segment stipitate and deeply 3-lobed, ultimate lobes lanceolate to narrowly ovate, 1.5--2.2 mm wide, and apically toothed. Scape 2.5--6 cm, elongated in fruit, with long hairs; involucral bracts 3--4.5 cm, abaxially puberulent, basally connate into a 0.8--1.2 cm tube, apical palmate lobes linear, margin entire or slightly 3-lobed. Sepals purplish red to dark purple, erect, oblong to ovate-oblong, 1.8--3 × 0.6--1.2 cm, abaxially puberulent, apex rounded to blunt. Stamens ca. 1/2 as long as sepals; anthers yellow. Infructescences 6--8 cm in diam. Achenes obovate-oblong, ca. 3 mm, sparsely puberulent. Persistent styles ca. 4 cm. Fl. Apr--May, fr. May--Jun.

Grassy slopes. Heilongjiang, Jilin, Liaoning, Nei Mongol [Japan, Korea, Russia (Far East, E Siberia)].