Japan Flora: Stipes 25-30 cm. long, rather stout, with 3 kinds of scales, the lower and basal broadly lanceolate to ovate-oblong, 1.5-2 cm. long, 4-7 mm. wide, acuminate, ciliate, the upper ones mem­branous, narrowly ovate, 公-15 mm. long, abruptly acuminate, cilia te, the smallest scales uniformly distributed over the stipe, broadly lanceolate, 3-6 mm. long, long-acuminate, ciliate; blades broadly lanceolate to oblong-ovate, 40-80 cm. long, 20- 25 cm. wide, slightly narrowed at base, the scales on rachis spreading, lustrous, pale red-brown to dull brown, the larger ones narrowly ovate, 5-8 mm. long, ciliate, the smaller ones linear to linear-lanceolate, 3-5 mm. long; pinnae 18-28 mm. wide; pinnules firmly herbaceous, oblique, oblong-ovate to ovate, auricled on anterior side, obtuse to subacute, spine­tipped, spine-toothed on margin, filiform-scaly beneath, sparsely so above; sori nearly median, in 2 series on the pin­nules: indusia flat, about 0.7 mm. across.

Honshu (Kanto Distr. through Tokaido to Kinki Distr.).