Dryopteris arguta

(Kaulfuss) Watt

Canad. Naturalist Geol., n. s. 3: 159. 1867.

Common names: Marginal wood fern coastal wood fern
Basionym: Aspidium argutum Kaulfuss Enum. Filic., 242. 1824
Treatment appears in FNA Volume 2.

Leaves monomorphic, green through winter, 25–90 × 8–30 cm. Petiole 1/4–1/3 length of leaf, scaly at least at base; scales scattered, light brown. Blade green to yellow-green, ovate-lanceolate, pinnate-pinnatifid to 2-pinnate at base, herbaceous, glandular. Pinnae ± in plane of blade, lance-oblong; basal pinnae deltate, not much reduced, basal pinnules ± same length as adjacent pinnules, basal basiscopic pinnule and basal acroscopic pinnule ± equal, pinnule margins serrate with spreading, spinelike teeth. Sori midway between midvein and margin of segments. Indusia lacking glands. 2n = 82.

Habitat: Shaded slopes and open woods
Elevation: 0–2100 m


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B.C., Ariz., Calif., Oreg., Wash., Mexico in Baja California.


Dryopteris arguta is somewhat variable. It has been suggested that more than one taxon is involved. No hybrids involving D. arguta are known.

Selected References


Lower Taxa

... more about "Dryopteris arguta"
James D. Montgomery +  and Warren H. Wagner Jr. +
(Kaulfuss) Watt +
Aspidium argutum +
Marginal wood fern +  and coastal wood fern +
B.C. +, Ariz. +, Calif. +, Oreg. +, Wash. +  and Mexico in Baja California. +
0–2100 m +
Shaded slopes and open woods +
Canad. Naturalist Geol. +
Dryopteris arguta +
Dryopteris +
species +