Plants 45--80(--150) cm tall. Rhizome straight or bent, 0.6--0.8 cm in diam. Petiole 3.5--8.5 cm, villous; leaf blade spatulate-oblong to oblong, 5.5--17 × 2.8--7 cm, abaxially villous along main vein, adaxially sparsely pubescent, base subtruncate, apex rounded to obtuse; segments 3--8 pairs, subopposite or alternate, incised-dentate to lacerate, apex acute. Involucral bracts 2.4--4.4(--7) × 0.4--0.8(--1.5) cm, lanceolate-ovate to lanceolate-oblong, finely pinnatipartite. Peduncle erect, terete, 3--6 mm in diam., subglabrous. Inflorescences 2--4-flowered; bracteoles broadly lanceolate, 1.3--1.7 cm. Sepals obovate, 1.6--4.4 × 1.1--3.5 cm, abaxially pubescent. Stamens 6--9 mm; anthers 2--3 mm. Pistils 60--70, ca. 5 mm. Styles basally densely villous, apically pubescent. Achenes ca. 1.2 cm, subellipsoid, slightly flat. Fl. Jul--Sep.
Home