Japan Flora: Rhizomes short, rather stout, erect, densely scaly; fronds dimorphic, evergreen, glabrous; stipes of the sterile fronds short, 1-5 cm. long, scaly, sulcate on upper side, the scales at base chartaceous, linear, 1-1.5 cm. long, about 1 mm. wide, lustrous, dark brown with a narrow pale margin, entire; sterile blades oblanceolate to oblong- oblanceolate, 20-30 cm. long, (3.5-) 5-8 (-10) cm. wide, pecti­nate, abruptly contracted at the tip to a linear subacute tail 1-2 cm. long, gradually narrowed at base, with scattered brown membranous linear-lanceolate scales while young; pinnae nearly horizontally spreading, broadly linear, 3-7 mm. wide, obtuse to subobtuse, entire, the lower ones often some­what deflexed and slightly broader on anterior side, the lower­most ones auriclelike, 3-10 mm. long, as wide or wider at base, the lower fertile pinnae distant, linear, 1.5-3 cm. long, 2-3 mm. wide, obtuse, not or slighdy contracted at base, the lowest few pairs sterile, 1-3 mm. long, distant and much- reduced. Woods in mountains.

Hokkaido, Honshu, Shi­koku, Kyushu.