Japan Flora: Costas beneath, stipes, and rhizomes with red-brown crisped rather coarse hairs especially while young; rhizomes filiform, loosely branched, long-creeping; fronds 3-pinnatiparted, 6-12 cm. long, ovate to broadly lanceolate; stipes scarcely thicker than the rhizomes, 2-5 cm. long, wingless or with a very narrow deciduous wing on each side; blades broadly to narrowly ovate, the sterile obtuse, the fertile usually more or less elongate, 3-8 cm. long, 2-3 cm. wide; pinnae ovate, once or sometimes twice pinnatiparted; ultimate segments 1.2-1.7 mm. wide, rounded to obtuse at apex, spin- ulose; sori usually in upper portion of blade; indusia about 1.2 mm. wide, broadly ovate, the valves distinctly toothed on up per margin.

Honshu (Ugo Prov. and southw.), Shikoku, Kyushu. Korea (Quelpaert Isl.) and China.