Japan Flora: Rhizomes long-creeping, very slender, scarcely 1 mm. across, loosely scaly to nearly naked, the scales brown, broadly ovate, entire, abruptly caudate-acuminate; fronds dimorphic; sterile blades ovate to pyriform in outline, 2-4 cm. long, 1.5-3 cm. wide, glabrous, the stipe 5-10 mm. long; fertile blades firmly coriaceous, lingulate-lanceolate, 3-5 cm. long, 5-10 mm. wide, sometimes similar to the sterile, subacuminate, gradually attenuate at base, very slightly recurved on margin, the stipes 2-3 cm. long; sori in 2 rows on the blade, round to ovate, remote, the upper ones often nearly confluent, medial.

Epiphytic on tree­trunks; Kyushu (Yakushima). China