Japan Flora: Rhizomes short, ascending, densely covered with the persistent bases of old stipes and with lustrous dark brown liiwar scales about 3 mm. long; fronds tufted; stipes 1.5-10 cm. long, purple-brown, lustrous, terete, 2-striate on the upper side, prominently scaly; scales on stipes and rachis rather unequal, broadly linear, 1-2 mm. long, spreading, deep brown, entire; blades oblong-ovate in the smaller ones, nearly linear in the larger ones, 7-30 cm. long, 18-30 mm. wide, acute，scarcely narrowed at base, bipin- natiparted, the rachis purple-brown, with a prominently scaly raised line on the margins above; pinnae 7-15 on each side, herbaceous, opposite or nearly so, triangular- to oblong-ovate, 1-2.5 cm. long, obtuse, sessile, glabrous, spreading to ascend­ing, the costa impressed on upper side, raised and purple­brown beneath; pinnules oblong or oblong-ovate, 2-7 mm. long, obtuse to rounded, crenately few-toothed; veins and vein- lets indistinct on both sides; sori marginal, on the ends of the veinlets; indusia apparently soon confluent, rusty-brown. 

Honshu (Chugoku Distr.), Shikoku, Kyushu. s. Korea and China.