Japan Flora: Rhizomes short, ascending; fronds gray-green, dull; stipes few, 10-40 cm. long; scales dull brown, thinly chartaceous, scarious on margin, the larger ones tardily deciduous, acuminate, spread­ing, elliptic to narrowly deltoid-ovate, subentire, the median scales on stipes and rachis appressed, broadly ovate, 3-4 mm. long, acute, ciliate, the smaller ones membranous, densely cili- ate, orbicular, 1-2 mm. long, appressed, rarely prolonged and taillike at the tip; blades narrowly ovate, 15-40 cm. long, 6-15 (-18) cm. wide, widest at base, often rooting and proliferous at the tip of the prolonged rachis, simply pinnate; pinnae 10- 20 on each side, spreading, lanceolate, 3-10 cm. long, 6-20 mm. wide, acuminate, subentire to undulate-toothed, sessile, glabrate above, with ovate to lanceolate ciliate scales beneath, auricled on anterior side at base with a deltoid acute lobe or rarely a free segment; veinlets rarely somewhat anastomosing; sori in 2 series on the pinnae, nearer the costa than the margin, or in 3 or 4 somewhat irregular scries; indusia small, orbicular, fu­gacious. Thickets on hillsides.

Honshu (s. Kanto Distr. and Tokaido), Shikoku, Kyushu; locally common. s. Korea, China, and Formosa.