Japan Flora: Fronds large, glabrous, evergreen; rhizomes creeping, remotely leaved, 4-7 mm. across, with dark brown lustrous jointed crisped hairs; stipes shorter than the blades, lustrous, dark purple-brown at least on the lower half, 5-15 mm. across; blades large, to 1 m. long, triangular-ovate, obtuse to short-acute, glabrous, green above, glaucous beneath, bipinnate or bipinnatiparted, the rachis terete, brownish or stramineous; pinnae opposite, 5-10 acute with an obtuse tip, sessile, pinnatiparted to pinnate, in large fronds the lowest pair of pinnules much reduced and stipulelike; ultimate pinnules opposite, narrowly ovate to elliptic, 5-20 mm. wide, obtuse to rounded, horizon­tally spreading, entire or sinuately lobed; veins anastomosing slender; sori marginal, elongate, covered by the reflexed mar­ginal false indusium.            

Honshu (Izu and Kii Prov.), Kyu­shu; rare. Pantropic