Description Rhizome: short, thick, erect, also branching occasionally, scaly.
Frond: 70 cm high by 20 cm wide, deciduous, monomorphic, blade/stipe ratio: 3:1.
Stipe: grooved, scales black-brown, the largest 2 cm, vascular bundles: 3-7 in a c-shaped pattern.
Blade: 2-pinnate at base, oblong-lanceolate to oblong, herbaceous or papery, appressed scales beneath, especially on the costae.
Pinnae: 12 to 24 pair, lanceolate, sterile 2-3.5 cm wide, fertile 1 cm wide; pinnules oblong, round to moderately acute at apex, 4--7 mm broad, minutely dentate at margin; costae grooved above, continuous from rachis to costae; veins free, forked.
Sori: round, confined to upper pinnae, medial on ultimate lobes, indusium: reniform, at a sinus, sporangia: brownish.

Culture Habitat: in lowlands, at edge of forests. Distribution: Japan, Korea and E. China. Hardy to -25°C, USDA Zone 5.

Synonyms
Nephrodium lacerum (Thunb.) Baker var. uniforme Makino