Decipiens means deceptive or not obvious, but we don't have a clue as to what part of it is not obvious.
Rhizome: erect, scaly.
Frond: 50 cm high by 10 cm wide, deciduous in colder areas, monomorphic, blade/stipe ratio: 3:1.
Stipe: grooved, vascular bundles: 3-7 in a c-shaped pattern.
Blade: 1-pinnate, lanceolate, leathery, linear to ovate scales below, absent above.
Pinnae: 15 to 18 pair, anadromous on the basal pinnae, the lobe closest to the rachis separate, margins crenate; costae grooved above, continuous from rachis to costae; margins margins crenate; veins free, forked.
Sori: round, in 1-3 rows between midrib and margin, indusium: reniform, at a sinus, sporangia: brownish.
Habitat: on forest floor or at edge of lowland forests.
Distribution: Japan, China.
Hardy to -25°C, USDA Zone 5.
bronzy new growth
Aspidium decipiens Luerss.
Nephrodium decipiense Hook.
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.