Japan Flora: Rhi­zomes elongate, long-creeping, fugacious; stipes 20-50 cm. long, straw-colored to brown, lustrous, dark brown near base, rather densely scaly; scales tardily deciduous, thinly mem­branous, pale brown, spreading, the larger ones lanceolate, entire, abruptly long-acuminate, 4-10 mm. long, the smaller ones narrowly ovate, 1-2 mm. long; blades deltoid, remotely 5-angled, 3- or 4-pinnate, 20-50 cm. long, slightly narrower to nearly as broad as long, acuminate, cordate, hairy on both sides, the rachis pale green to yellow-brown, thinly pilose especially in the axils, the lowest pinnae narrowly deltoid- ovate, 15-35 cm. long, oblique, with a dilated base on posterior side, the petioles 1.5-3 cm. long; ultimate pinnules mem­branous, elliptic-ovate to oblong or ovate, sometimes lobed to parted, obtuse or sometimes acute to rounded, cuneate at base* oblique, sessile, vivid green above, slightly paler beneath; sori 1-4 on each lobe or segment, orbicular-reniform, reddish in the center when young, 0.8-1 mm. across.     

Hokkaido, Honshu, Shikoku, Kyushu. Korea and China.