Japan Flora: Fronds tufted, 20-30 cm. long; seals on rhi­zomes and basal part of stipes lanceolate, 4-5 mm. long, dark brown; blades herbaceous-coriaceous, linear-oblanceolate, 1-1.5(-2) cm. wide, gradually narrowed at base to the short winged stipe, subentire to remotely undulate-toothed, scarcely cartilaginous on margin, sometimes bifid, nearly glabrous on both sides; costa slightly raised on both sides; veins parallel, once-forked; sori elongate, suberect to ascending, mostly on the anterior branchlet of veins, distant, straight; indusia 7-20 mm. long.           

Kyushu (s. distr.); rare. Formosa and sw. China to India.