Japan Flora: Fronds slender, glabrous; rhizomes short, with black-brown lustrous broadly linear entire scales about 2.5 mm. long; fronds tufted, the sterile ones shorter; stipes slender, pale green, 3-angled, glabrous in upper part, thinly scaly at base; blades broadly ovate in outline, the rachis winged; sterile pinnae thinly chartaceous, 2 or 3 on each side, 3- to 5-parted, the sterile divisions linear to lanceolate, 5-15 cm. long, 6-12 mm. wide, long-acuminate, sessile or decurrent on the rachis, irregularly aristulate-toothed; fertile pinnae lin­ear, entire, 10-20 cm. long, 3-7 mm. wide. Lowlands.

Hon­shu (Kanto Distr. and westw.〉, Shikoku, Kyushu; common.  China and Indochina.