Japan Flora: Rhi­zomes erect to ascending, clothed with the basal stubs of old stipes; fronds tufted; stipes erect, 10-40 cm. long, pale green, brownish at base, loosely scaly, the scales membranous, brown, entire, long-filiform at the tip, the larger ones broadly lanceo­late to oblong, 7-15 mm. long, evanescent on upper part of stipe, persistent at base, smaller ones ovate, 3-5 mm. long; blades simply pinnate in upper part, lanceolate, 20-45 cm. long, 5-10 cm. wide, acuminate, the rachis pale green, sparsely scaly, bipinnate in the lowest pinnae; pinnae 20-35 on each side, herbaceous, lanceolate, 2.5-5 cm. long, 5-12 mm. wide, often falcate toward the acuminate tip or straight, strongly oblique on anterior side at base, ascending-toothed, ending in a soft slender awnlike tip, sometimes lobulate, glabrous above, with scattered thin scales beneath; pinnules 8-15 pairs, smaller than the pinnae; sori in 2(-4) series on the pinnules, between the costule and the margin or slightly nearer the costule; in­dusia membranous, orbicular, erose. Woods in mountains.

Hokkaido, Honshu, Shikoku, Kyushu; common. s. Kuriles, Korea, China to e. Siberia.