Japan Flora: Rhizomes creeping, rather densely covered with the basal stubs of old stipes; stipes slender, 15-30 cm. long, the fertile up to 40 cm. long, straw- colored, dark brown at base, very sparsely scaly; scales ovate, 2-4 mm. long, abruptly acuminate, dark brown, with a few spinelike teeth; blades thinly herbaceous, broadly oblanceolate to oblong, 20-40 cm. long, 8-15 cm. wide, fertile ones often narrower, acuminate, somewhat narrowed at base; sterile pinnae contiguous, the fertile distant, broadly linear to lanceo­late, 8-15 mm. wide, acuminate with an acute to subobtuse tip, sessile, with a stipulelike lobe at base, thinly pilose, pin- natiparted, the fertile pinnae often with recurved margins, the costas pilose above, white-villous beneath at least on lower half; veinlets usually simple, reaching the margin; indusia membranous, orbicular-reniform, glandular and sometimes pilose, 0.5-0.7 mm. across.

Hokkaido, Honshu (centr. And n. distr.). Korea and China.