Japan Flora: Rhizomes long-creeping, wiry, 1.5-2 mm. across, while young with dark brown, lustrous, jointed, straight hairs 1.5-2 mm. long; fronds rather remote; blades lanceolate to narrowly so, 15-35 cm. long, 3-5 cm. wide, very short-stiped or subsessile, simply pinnate, the rachis with dark brown spreading hairs while young, often bisulcate by virtue of the very narrow upturned wings; pinnae many, rhombic-ovate, 15-30 mm. long, 6-13 mm. wide, obtuse, broadly cuneate at base, auriculate on an­terior side at base, the pinnules parallel, entire, irregularly toothed at the truncate apex; veinlets ascending to suberect; indusia exserted, about 1.7 mm. long, tubular, narrowed at base, truncate at apex. Tree trunks.

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