Plant: Evergreen perennial. Rhizome: Creeping horizontally; leaves sparsely arranged. Stipe: About 1/2 the length of blade; densely scaly. Scales: Broadly lanceolate; brown; 2.5-4.5 mm × 1-1.2 mm. Frond: Shape: Ovate-elliptical Size: 6-10 cm × 4-5 cm Division: Once pinnate, cut nearly to rachis Surface: Glabrous Pinnae: Pairs: 10-15 Arrangement: Spreading horizontally Shape: Linear-elongate-elliptical Width: 5-7 mm Margin: Obscurely serrulate Apex: Obtuse Venation: Midrib: Prominent abaxially Lateral veins: Obscure on both surfaces Sori: Round;  submarginally arranged; exindusiate. Habitat: On rocks or tree trunks; Ulleungdo Island.

Japan Flora: Rhizomes creeping, rather stout to somewhat slender, densely scaly, the scales ascending, membranous, brown, broadly lanceolate, 2.5-45 mm. long, 1-1.2 mm. wide, gradually narrowed, short- filiform at the tip; fronds glabrous； stipes straw<olored; blades firmly herbaceous, oblong-ovate to broadly lanceolate, 6-10 cm. long, 4-5 cm. wide, pinnately parted nearly to the rachis, glabrous, the rachis stout and raised on both sides; segments 10-15 pairs, horizontally spreading, linear-oblong, 5-7 mm. wide, obsoletely crenate, very obtuse; costa slender, raised beneath, the veins not prominent on either side; sori orbicular, medial or slightly nearer the costa.  Tree-trunks and rocks.

Hokkaido, Honshu (mountains n. distr., very rare and local westw.). Kuriles, Korea (Dagelet Isl.), dhina, Tibet, Si­beria to Europe, and N. America.