Japan Flora: Rhizomes short, erect; stipes crowded, 5-15 cm. long, very densely scaly, the scales on upper part firmly membranous, brown, concolorous, spreading, broadly lanceolate to nearly linear, 4-8 mm. long, gradually filiform at tip, contorted, short- ciliate, unequal, the lower scales ovate to narrowly so, 6-10 mm. long, short-acuminate; blades lanceolate, 25-40 cm. long, 5-10 cm. wide, gradually long-acuminate, slightly narrowed at base, bipinnate, the rachis densely scaly; pinnae approximate, oblong-lanceolate, acute, often abruptly so, sessile; pinnules firmly herbaceous, obliquely ovate or rhombic-ovate, 5~10 mm. long, 3-5 mm. wide, obtuse, short spine-tipped, sessile, spine- toothed, with a short depressed-deltoid auricle on anterior side, deep green and nearly glabrous on upper side, paler and with hairlike scales beneath; sori submarginal, on upper 2/3 of the blade; indusia orbicular, about 0.7 mm. across, entire. 

Honshu (Kanto to Kinki Distr.); rare.