Japan Flora: Rhizomes short, erect, covered with the stubs of old stipes; fronds green, glabrous, somewhat tufted; stipes 15-25 cm. long, straw-colored, scaly toward base; scales membranous, linear to linear-lanceolate, 8-15 mm. long, about 2 mm. wide, uniformly brown or with a darker somewhat lustrous thicker band in the center, entire; blades herbaceous, oblong-ovate, 25-40 cm. long, 8-20 cm. wide, acuminate, scarcely narrowed at base, sessile, 2-pinnate; pinnae 10-15 on each side, equilateral, lanceolate, 1-2.5 cm. wide, long-acuminate, the rachis scarcely winged; pinnules oblong-ovate, 5-12 mm. long, 3-5 mm. wide, obtuse to acute, toothed to lobulate, very slightly adnate to tlie rachis, scarcely decurrent; sori 4-10 to a pinnule, median; indusia about 1 mm. long, oblong, straight, the lower ones often hamate (athyrioid), thin, entire.  Woods in lowlands and mountains.

Hokkaido, Honshu, Shikoku, Kyushu; com­mon and variable. Sakhalin, Korea, Manchuria, and e. Siberia.