Plants 70-100 cm tall. Stipe straw-colored, or purplish brown proximally, 30-55 cm × 3-4 mm; lamina dull green, ovate-oblong, 40-50 × 20-25 cm, 2-pinnate, herbaceous when dry, abaxially pilose, adaxially glabrous. Pinnae 4-7 pairs, basal pair largest, with stalks 1-1.5 cm, pinnate; lateral pinnules 1 or 2 pairs, lanceolate to oblong-lanceolate, 6-12 × 2-3 cm, shortly stalked, base subrounded, apex caudate; terminal pinnule oblong or oblong-lanceolate, as medial pinnae in shape and size, 15-20 × 3-4 cm. Pinnae of second pair trifoliolate or bifurcate, other pinnae simple and gradually shortened distally. Terminal pinna larger than adjacent ones. Pinna and pinnule margins densely and sharply serrate. Hydathodes clavate, slightly extending into teeth.

● Forests; 800-1800 m. Sichuan, Zhejiang.