Latin: arguta means sharply toothed or notched.
Frond: 60 cm high by 20 cm wide, evergreen, monomorphic, blade/stipe ratio: 2:1 to 3:1.
Stipe: grooved, scattered, light brown or reddish-brown scales, vascular bundles: 3-7 in a c-shaped pattern.
Blade: pinnate-pinnatifid to 2-pinnate at base, lanceolate, widest and truncate at the base, herbaceous or papery, glandular.
Pinnae: 17 to 18 pair, subopposite; pinnules oblong, about 1 cm; costae grooved above, continuous from rachis to costae; narrow, lanceolate scales; margins serrate to lobed, decidedly spiny; veins free, running to teeth tips.
Sori: round, medial, indusium: reniform, pale greenish yellow, at a sinus, sporangia: brownish-gray.
Habitat: open, wooded slopes.
Distribution: coastal British Columbia to California, Baja California, disjunct in Arizona.
Hardy to -15°C, USDA Zone 7; however, the majority of selections are limited to Zone 8.
narrow, lanceolate scales on costa; very spinulose Dryopteris
Aspidium argutum Kaulfuss
Lastrea arguta Brackenr.
Nephrodium argutum Diels
Thelypteris arguta Moxley
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.