Japan Flora: Rhizomes stout, short, densely clothed with the stubs of old stipes; fronds crowded, the sterile ones ascending, the fertile ones longer, erect; stipes 15-40 cm. long in sterile fronds, 30-60 cm. long in the fertile, 3-angled at base; sterile blades 20-40 cm. long, 10-15 cm. wide, the rachis 2-grooved on upper side pairs, spreading, chartaceous-coriaceous, narrowly lanceolate, 5-8 cm. long, 8-12 mm. wide, gradually acuminate, subentire or crenate-toothed, sessile, the upper ones not or very slightly decurrent on the rachis; veins spreading, once forked or simple; fertile pinnae 5-10 cm. long, short-petiolulate. 

Honshu, Shikoku, Kyushu.