Japan Flora: Rhizomes fili­form, 0.2-0.3 mm. across, loosely branched, densely blackish hairy; fronds 3-10 cm. long; stipes 7-25 mm. long, winged, with blackish hairs at base; blades narrowly ovate, 2-7 cm. long, 1.5-2 mm. wide, nearly glabrous on both sides, the rachis winged; pinnae sometimes subbipinnately parted, the ultimate segments 0.7-1 mm. wide, entire, obtuse; indusia obovoid, about 1.5 mm. long, winged on lower half of both margins, bilobed to the middle, the lobes semirounded-deltoid, very ob­tuse, entire.         

Honshu (Uzen and Rikuzen Prov. southw.), Shikoku, Kyushu; rather rare. Ryukyus, Formosa to Ma­laysia.