Japan Flora: Rhizomes erect or ascendingj the basal stubs of old stipes persistent; fronds tufted, small, slender, glabrous, sometimes sparsely puberulent on the rachis of the pinnae beneath; stipes 5-15 cm. long, slender, scaly while young, pale green, brownish toward the base, dull; scales thinly membranous, pale brown, broadly lanceolate, about 3 mm. long, scarcely 1 mm. wide, entire; blades membranous, lanceolate-deltoid, 12-20 cm. long, 5-10 cm. wide, acuminate to caudately acuminate, scarcely nar­rowed at base, bipinnatisect or sometimes bipinnate in the lower portion; pinnae 8 or 9 pairs, narrowly ovate, 2.5-5 cm. long, 1-1.8 cm. wide, acute to short-acuminate, spreading, oblique, very short-petiolulate; pinnules several pairs, oblong to elliptic or ovate to narrowly so, 5-8 mm. long, 2-4 mm. wide, oblique, usually slightly adnate to rachis at base, crenate or mucronate-toothed, often lobulate, with scattered fleshy ckcidu- ous bristles on upper side; sori 3-10, costular; indusia broadly lanceolate to oblong, straight, 1-1.5 mm. long, often athyrioid and rarely also diplazioid, brownish, erose-denticulate. Mountains.

Kyushu (Yakushima); rare. Formosa.