Japan Flora: Rhizomes long-creeping, firm, 3-4 mm. across, black-brown, scaly; stipes 30-40 cm. long, pale green to pale brown, thinly scaly and dark brown toward base; scales firmly membranous, the upper ones brown, the basal nearly black, linear, 3-4 mm. long, ab이it 0.5 mm. wide, sparsely spine-toothed toward tip; blades narrowly ovate to broadly lanceolate, 2(M0 cm. long, 8-20(-30) cm. wide, long-acuminate, not contracted at base; pinnae 10-13 pairs, horizontally spreading, equilateral except sometimes the lowest one, lanceolate, 4-10(-15) cm. long, 1-3(-3.5) cm. wide, short- petiolulate, pinna til obed, the upper pinnae smaller and de­current on the rachis; sori linear, 3-7 mm. long, slightly arcu­ate, median, or those on the lowest veinlets often diplazioid and longer.

Honshu (Izu Prov., Tokaido, Kinki Distr. and westw.), Shikoku, Kyushu. Ryukyus, Formosa, China, and Philippines.

var. fauriei (Christ) Ohwi. Pinnae irregularly toothed. Occurs with the species.

var. isobasis (Christ) Ohwi. Pinnae deeply parted. Occurs with the species.