Japan Flora: Rhizomes stout, erect to subascending, densely clothed with the basal stubs of old stipes; fronds tufted; stipes 5-12 cm. long, straw- colored, sparsely scaly, the scales membranous, pale brown, lanceolate, 3-5 mm. long, often attenuate with a long taillike tip, denticulate-ciliate; blades linear-lanceolate, 15-40 cm. long, 2.5—5 cm. wide, acuminate to elongate-acuminate，simply pin­nate, the rachis straw-colored, thinly scaly; pinnae 15-30 pairs, firmly chartaceous, spreading, narrowly oblong to narrowly ovate-oblong, 1-3 cm. long, 5-10 mm. wide, glabrous above, thinly scaly beneath, sessile, obtuse to abruptly acute, mucro­nate- to spine-toothed, awnlike at the tip, the anterior side nearly straight, truncate at base and auricled, narrowly cuneate on posterior side at base; sori on apical and anterior side of pinnae, much nearer the margin than the costa; indusia thin, orbicular, about 1 mm. across, erose.  Calcareous rocks.

Honshu (Chugoku Distr.), Shikoku, Kyushu; rare. China and Formosa (var.).