Japan Flora: Rhizomes short, erect or ascending; stipes tufted, 2(M0 cm. long, densely scaly near base, sparsely so above, the scales lanceolate to ob­long, 1-1.5 cm. long, dark brown, smaller in the upper ones； blades 20-50 cm. long, 15-22 cm. wide; pinnae 3-6 pairs, ob­long-ovate to ovate, 8-15 cm. long, 3-7 cm. wide, long-acumi­nate, short-petiolulate, finely and regularly spine-toothed, usu­ally with a prominent auricle on anterior side, or sometimes on both sides in the lower ones, the terminal pinna large, 3- or 2-cleft; indusia flat, laciniate-fimbriate.  Calcareous areas.

Honshu (Kanto Distr. and westw.), Shikoku, Kyushu. China to India and Hawaii.