Japan Flora: Rhizomes rather stout; fronds tufted; stipes erect, short, 3-10 cm. long, sparsely scaly in upper part, densely so near base; scales on upper part of stipe and rachis membranous, brown, spreading, linear to linear-lanceolate, 2-4 mm. long, entire, ciliate at the more or less dilated base, deciduous; scales on the lower part of stipe ovate, deep brown, those on the underside of pinnae linear, about 1 mm. long; blades linear-lanceolate, 8-20 cm. long, 1.5-25 cm. wide, acute, slightly narrowed at base; pinnae 15-25 pairs, herbaceous, spreading, green and glabrate on upper side, thinly scaly be­neath, ovate, obtuse to acute, sessile, with rather coarse awn­tipped teeth, sometimes lobed; costas and veins not prominent; sori to 12, in 2 series on the pinnules, between the costa and the margin or slightly nearer the costa; indusia about 1 mm. across, erose, slightly impressed. Rocky slopes in alpine regions.

Honshu (centr. mountains); very rare. China to the Himalayas.