Japan Flora: Rhizomes creeping, scaly, thinly pilose; fronds thinly pilose; stipes slender, wiry, 20-45 cm. long, straw­brown, sparsely scaly toward base; scales broadly lanceolate, 1-2 mm. wide, dull brown, often thinly pilosulous on one side; blades broadly lanceolate to oblong-ovate, 20-50 cm. long, 10-25 cm. wide, acuminate, abruptly contracted at base, the rachis short spreading-pilose and longer hispid; pinnae thinly herbaceous, oblong-lanccolate, 4-12 cm. long, 15-2.5 cm. wide, gradually contracted at the tip, caudate, sessile, pinnatiparted, short-hairy on margin and costas on upper side, hispid beneath especially on the costas; pneumatophores at the base of the pinnae beneath subglobose; pinnules narrowly oblong, 4-6 mm. wide, rounded at apex, crenate to subentire, the veins pinnate, the veinlets simple; sori orbicular to elliptic, between the costule and the margin; indusia absent.  Wet slopes.

Honshu (Izu, Suruga, and Kii Prov.), Kyushu; rare. Formosa and China.