Japan Flora: Rhizomes short-creep­ ing, densely scaly; stipes 35-40 cm. long, purple-brown to purplish, lustrous, very sparingly scabrous; blades thinly herba­ceous, ovate-oblong, 50-60 cm. long, 20-30 cm. wide, bipinnati- parted, glabrous, the rachis purple-brown or purplish, lustrous, sparsely scabrous; pinnae 5-7 pairs, spreading, lanceolate, 15- 20 cm. long, 3-6 cm. wide, acuminate, slightly oblique, short- cuneate at base, sessile, the lowest pinna 2-parted; costas with a soft spine on upper side at base of the pinnule; pinnules 2-4 cm. long, about 7 mm. wide, obtuse or rounded, the sterile portion incurved-toothed; lowest veinlets anastomose, forming elongate areoles along the costas of the pinnules.

Kyushu (Satsuma Prov.); rare.