Japan Flora: Rhizomes stout, ascending to erect; fronds crowded; stipes 5- 25 cm. long in the sterile fronds, 20-50 cm. long in the fertile ones, 3-angled at the base, somewhat 4-angled in upper part; sterile blades 15-30 cm. long, 6-15 cm. wide, the rachis winged at least in the upper portion; pinnae subcoriaceous, spreading, narrowly lanceolate, acute or sometimes the tip elongate, somewhat falcate, serrulate near the tip, decurrent, the basal not decurrent, the terminal pinna pinnately lobulate at the base; veins slender, spreading, usually once-forked, slightly raised on both sides; fertile pinnae narrowly linear, 4-6 cm. long, the lower ones short-petiolulate sessile but the upper ones scarcely decurrent.

Honshu (Izu Prov. and westw.), Shi­koku, Kyushu. Ryukyus, Formosa, China to Malaysia, and India.