Japan Flora: Rhizomes erect, stout, to 20 cm. long; fronds large; stipes 30-40 cm. long, about 1.5 cm. across near base, brown, densely scaly; scales chartaceous, lanceolate to linear, 1-2 cm. long, 1-3 mm. wide, gradually long-attenuate, entire or sparsely and minutely toothed, lustrous, dark brown with darker striations; blades lanceolate, 1-2 m. long, 30-40 cm. wide, acuminate, gradually narrowed at base, bipinnatiparted; rachis straw-colored, with dense, linear scales; pinnae subcoriaceous, linear-lanceolate, 2-3 cm. wide, caudately long-acuminate, sessile, horizontally spreading, the costa with filiform scales above, with linear to broadly linear scales beneath; pinnules narrowly oblong, 6-8 mm. wide, rounded to subtruncate at apex, cartilaginous­toothed; sori median, or slightly nearer the costules than the margin of the segments; indusia orbicular-reniform, about 1 mm. across, entire, glabrous.

Kyushu (Sakurajima); rare. Formosa and China to the Himalayas.