Japan Flora: Fronds large, often 1m.   long or more; stipes stout, straw-colored, 20-30 cm. long, densely scaly; scales membranous, spreading, pale- to red- brown, lustrous, entire, the largest narrowly ovate, 18-25 mm. long, 4-8 mm. wide, abruptly acuminate, the intermediate ones lanceolate, 10-20 mm. long, 2-4 mm. wide, gradually acumi­nate, the smallest ones linear to filiform, 3-8 mm. long, slightly dilated at base, contorted; blades 50-100 cm. long, 12-25 cm. wide, scarcely distincdy narrowed at base, the scales on rachis pde brown, filiform to broadly linear, 3-6 mm. long, sometimes mixed with lanceolate scales on lower portion; pin­nae 1.5-3.5 cm. wide; pinnules narrowly ovate, acute, short awn-tipped, somewhat decurrent on the narrowly winged axis, coarsely awn-toothed, with pale brown hairlike scales on both sides; sori usually in 2 series on pinnules on upper half of blade, slightly nearer the costule than the margin; indusia small, membranous, about 0.7 mm. across, erose. Conifer­ous woods in mountains.

Hokkaido, Honshu (n. and centr. distr.). Kamchatka.