Japan Flora: Rhizomes small, short, clothed with broadly linear brown scales about 3 mm. long; fronds tufted, slender, glabrous; stipes 1-7 cm. long, dark purple­brown, lustrous, 0.3-0.5 mm. across; blades oblong-lanceolate, 6-20 cm. long, 2-3 cm. wide, simply pinnate, the rachis purple­brown, very slender, sometimes much elongate and proliferous at the tip; pinnae thinly chartaceous, orbicular, 1-2 cm. long and as wide or slighdy wider than long, minutely undulate- crenate, shallowly 2- to 4-lobulate on upper margin, the peti- olules 2-3 mm. long; veins numerous, slender, parallel; sori 2- 4 on a pinnule, transversely oblong, 1.2-1.5 mm. long, 15-25 mm. wide, usually free, rarely confluent.             

Kyushu (Buzen Prov.); very rare. China and Manchuria.