creeping; stipes closely approximate, pale green to straw- colored, often brownish, 30-50 cm. long, densely scaly at base, sparsely so above, the lower scales pale brown, membranous, lanceolate, 1-1.5 cm. long, 1.5-2.5 (-3.5) mm. wide, gradually acuminate, filiform at tip, entire, the upper scdes 3-10 mm. long, linear-lanceolate, broadly cordate; fronds vivid green, the blades thinly herbaceous, oblong-ovate, 40-60 cm. long, 20-30 cm. wide, short-acuminate, 4-pinnatiparted to 4-pinnate, the rachis sparsely scaly; pinnae 12-15 pairs, approximate, obliquely spreading, short-petiolulate, the lowest with a broad posterior side; ultimate pinnules thinly herbaceous, oblong- ovate, 5-10 mm. long, 3-6 mm. wide, sometimes lobed or parted, acute to obtuse, acutely toothed, vivid green above, slightly paler and with hairlike short scales beneath, very sparsely so above; sori median in 2 series on the ultimate pinnules; indusia orbicular<xniform, often reddish when young, entire, 1-1.5 mm. across. Woods in mountains.
Hokkaido, Honshu, Shikoku, Kyushu; rather common. Korea.