Japan Flora: Rhizomes short, erect; fronds deep green, gla­brous, tufted; stipes straw-colored, 15-30 cm. long, densely scaly toward the base; scales at base of stipes broadly linear, 8-12 mm. long, 1-2 mm. wide, black- to chestnut-brown, usually with a paler margin, entire, slightly lustrous; scales on upper part of stipe very sparse, membranous, early decidu­ous, linear, 3-5 mm. long, pale brown; blades oblong and narrowly long-acuminate, or ovate-oblong, 20-45 cm. long, 12-20 cm. wide, not or scarcely narrowed at base, bipinnate; pinnae 10-15 pairs, equilateral, broadly linear to linear-lanceo­late, 7-15 cm. long, 15-25 mm. wide, gradually acuminate, falcate, sessile or nearly so; pinnules ovate, 8-12 mm. long, rounded to obtuse, obliquely cuneate at base, subsessile, toothed to lobulate; sori 3-10 to a pinnule, costal, ascending; indusia broadly lanceolate, 1-2 mm. long, straight, rarely diplazioid. Mountains.

Kyushu (Yakushima); rare. Formosa.