Japan Flora: Rhizomes stout; fronds deciduous, crowded, the sterile longer than the fertile; stipes of sterile fronds 20-60 cm. long, prominently scaly, straw-colored, the scales membranous, pale brown, linear-lanceolate to narrowly ovate, 7-20 mm. long, 1.5-4 mm. wide, long-acuminate, lus­trous, entire; blades ovate-elliptic to broadly lanceolate-deltoid, 30-50 cm. long, 20-30 cm. wide, pinnate, abruptly short-acumi­nate, the rachis scaly; pinnae 8-20 pairs, narrowly lanceolate, 10-15 cm. long, 1.5-4(-5) cm. wide, nearly truncate at base, sessile, closely pinnatilobed, glabrous on both sides or brown paleate along the costa beneath; segments ovate, 4-7 mm. wide, obtuse to acute, obliquely spreading, toothed, the veins simple; fertile fronds 30-70 cm. long, the stipes terete, usually longer than the 1-sided blade, the pinnae close, ascending, dark brown, broadly linear, 5-10 cm. long, 5-6 mm. wide, sessile. Sept.-Nov.

Hokkaido, Honshu, Shikoku, Kyushu. s. Kuriles, Korea, China to the Himalayas.