Japan Flora: Rhizomes stout, short-creeping; stipes straw- colored or pale brown, rather stout, 30-60 cm. long; scales deciduous, dark-brown, linear, 5-12 mm. long, tapering to a long filiform tip, sparsely spinulose-ciliate, the basal scales membranous, many, dense, brown, linear-lanceolate, 15-20 mm. long, subentire; blades broadly ovate, 20-50 cm. long, 20-35 cm. wide, simply pinnate, the rachis straw-colored, glabrate, rather stout, 5-20 cm. long; pinnae 2-5 pairs, coria­ceous-chartaceous, unlobed, linear-lanceolate to oblong-lanceo­late, oblique, abruptly or gradually acuminate, usually rounded at base, with short, linear, hairlike scales beneath, glabrous above, very short-petiolulate or sessile and the upper ones often narrowly adnate at base, the costa raised beneath; fertile pinnae 10-25 cm. long, 15-35 mm. wide, subentire or crenate, the sterile broader, 10-30 cm. long, 3-7 cm. wide, crenate to mucronate-toothed; sori mosdy toward the margin; indusia orbicular-reniform, entire, about 1.5 mm. across.  Woods.

Honshu (s. Kanto to Tokaido and Chtigoku Distr.), Shikoku, Kyushu. Formosa.