Japan Flora: Rhizomes long-creeping, stout, with the short persistent basal stubs of old stipes; stipes 40-50 cm. long, pale green, dark brown toward base, scarcely scaly; blades herbaceous, deltoid-ovate, 50-60 cm. long and as wide, bipin­nate; pinnae 7-8 pairs, equilateral, alternate, ovate-oblong, 10-15 cm. wide, acuminate, petiolulate; pinnules nearly hori­zontally spreading, narrowly ovate-deltoid to broadly deltoidceolate, 3.5-7 cm. long, 1.8-3 cm. wide, acuminate, sessile short-petiolulate, truncate at base, pinnately cleft to shal­lowly parted; pinnules elliptic to obliquely ovate, rounded or with a short acutish tip; veinlets sometimes forked; sori costu- Iar, on basal portion of the veinlets; indusia unequal in length, 3.5-45 mm. long, sometimes diplazioid on the lowest veinlets, solitary, 1.5-3.5 mm. long in those of the other veinlets.                     

Honshu (Ise Prov. and westw.), Shikoku, Kyushu. Ryukyus, Formosa, s. China, Indochina.