Japan Flora: Evergreen glabrous fern; rhizomes long-creeping, 2-3 mm. across, densely scaly, the scales ascending, linear-subulate, 3-4 mm. long, dilated and ovate-cordate at base, dark brown, minutely dentate; fronds evergreen, glabrous, 12-30 cm. long; stipes 1-3 cm. long; blades coriaceous, linear to broadly so, 5-15 mm. wide, gradually acuminate, gradually narrowed at base, entire, somewhat recurved on margin, entire, dark green above, pder beneath, the costa prominent on both sides, usually with minute ovate appressed scales on lower half be­neath; sori round, on upper half of blades, close to nearly contiguous at maturity, medial. Tree-trunks and rocks in lowlands and low mountains.

Hokkaido, Honshu, Shikoku, Kyushu; common. Korea, Formosa, China, Indochina, and Philippines.