Japan Flora: Rhizomes short, ascending, densely covered with the persistent stubs of old stipes; stipes 15-35 cm. long, straw-colored to pale green, often slightly brownish and prominently scaly especially toward the base; scales rather firm, lustrous, black-brown, broadly linear to lanceolate, 8-12 mm. long, 1-15 mm. wide, loosely spinulo沈 toward the tip; blades thinly herbaceous, deltoid, 30-50 cm. long, and as wide, bipinnate, the rachis usually scaly; pinnae 5-7 pairs, broadly lanceolate, equilateral, 20-30 cm. long, acuminate, not or scarcely contracted at base, petiolulate in the lower ones; pinnules equilateral, narrowly deltoid-ovate to ob­long, 2-4 cm. long, 1-1.5 cm. wide, rounded to obtuse, the larger ones acute to acuminate, short-petiolulate to sessile, pinnatilobed to shallowly parted; ultimate pinnules rounded to elliptic, rarely oblong, 4-6 mm. wide, rounded, obsoletely crenate; sori costal and subcostal, 1 to few on a pinnule, rather unequal in length, ascending; indusia linear to broadly so, (2-)3-4(-6) mm. long, subentire, solitary, nearly straight to slightly curved, rarely diplazioid or forked.    Woods in mountains.

Honshu, Shikoku, Kyushu. Formosa, China,

and n. India.