Japan Flora: Rhi­zomes short-creeping, densely covered with the basal stubs of old stipes; fronds deciduous; stipes 3-10(-18) cm. long, tufted, straw-colored, brown and rather densely scaly at base; scales broadly lanceolate to linear, acuminate, pale brown, entire; blades thinly membranous, oblong to oblong-ovate, 7-18 cm. long, 2-6 cm. wide, acuminate to acute, bipinnatiparted to bipinnate, not broadened at base, nearly glabrous; pinnae ovate to broadly lanceolate, sometimes the lowest deltoid-ovate, 6-12 mm. wide, acute to obtuse, short-petiolulate; pinnules oblong to obovate, 3-8 mm. long, 2-4 mm. wide, obtuse, sessile, usually more or less decurrent on posterior side at base, few-toothed to lobulate; veinlets not reaching the mar­gin; sori on upper portion of the simple veinlets; indusia thinly membranous, whitish, nearly orbicular to ovate-lanceo­late.                

Hokkaido, Honshu (centr. and n. distr.), Shikoku (Mount Tsurugi in Awa Prov.). Sakhalin, Kuriles, Korea, Formosa (alpine), and the colder regions and mountains of the N. and S. Hemispheres.