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.
Habitat: in lowlands, at edge of forests.
Distribution: Japan, Korea and E. China.
Hardy to -25°C, USDA Zone 5.
Nephrodium lacerum (Thunb.) Baker var. uniforme Makino
Illustration from The Cultivated Species of the Fern Genus Dryopteris in the United States, Barbara Joe Hoshizaki and Kenneth A. Wilson, American Fern Journal, 89, 1, (1999), with permission.