Japan Flora: Rhizomes creeping, about 5 mm. across, with membranous brown lanceolate entire acuminate scales 3-4 mm. long; fronds 70-130 cm. long; stipes 30-60 cm. long, glabrous, thinly scaly at base, sulcate on upper part, rounded and often purplish on lower side; blades ovate, 40-70 cm. long, 25-30 cm. wide, simply pinnate; pinnae 5-8 on each side, chartaceous or thinly herbaceous, oblong- to lincar-lancc- olate, 12-20 cm. long, 2-4.5 cm. wide, abruptly contracted with a linear tail at the tip, rounded to abrupdy acute at base， minutely toothed, glabrous on both sides or very thinly pubes­cent along the costas and veins beneath, the lower pinnae often with 1 or 2 smaller di\dsi야is on each side near base, petiolate; veins closely parallel, once or twice forked, free, reaching the base o£ the marginal tooth; sori along the lower 2/3-4/5 of the dorsal part of the veins, yellow.  Woods in low moun­tains.

Hokkaido, Honshu, Shikoku, Kyushu; common. Sakhalin, s. Kuriles, Korea, Manchuria, China to India. The typical phase occurs in India to Malaysia and Hawaii.