Japan Flora: Rhizomes short-creeping, densely scaly, the scales membranous, brown, slightly lustrous, linear-lanceolate, 4-5 mm. long, filiform at the tip, sparsely toothed, clathrate; fronds coriaceous, fleshy, lustrous, closely approximate, 20-40 cm. long including the stipe, 3-4(-5) mm. wide, acute to subobtuse, gradually attenuate toward the base; costa stout, raised beneath, with a deep groove on each side above; sori on a groove midway between the costa and margin.                    

Honshu (Izu and Kii Prov. westw.), Shikoku, Kyushu; rare. China.