Dryopteris arguta

(Kaulfuss) Maxon

Amer. Fern J. 11: 3. 1921.

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, ovatelanceolate, 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

Distribution

V2 236-distribution-map.gif

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

Discussion

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

None.

Lower Taxa

None.

"not" is not a number. "swollen" is not a number."/4lengthofleaf" is not declared as a valid unit of measurement for this property."adjacent" is not a number. "adjacent" is not a number.

... more about "Dryopteris arguta"
pinnatifid +
James D. Montgomery +  and Warren H. Wagner Jr. +
(Kaulfuss) Maxon +
Aspidium argutum +
simple to commonly +
green +  and yellow-green +
pinnate-pinnatifid;2-pinnate +
reduced +
leathery;herbaceous to somewhat +
roundish +
Marginal wood fern +  and coastal wood fern +
B.C. +, Ariz. +, Calif. +, Oreg. +, Wash. +  and Mexico in Baja California +
0–2100 m +
often +  and glabrous +
Shaded slopes and open woods +
caducous +  and persistent +
round-reniform +
monomorphic +
25 cm250 mm <br />0.25 m <br /> (90 cm900 mm <br />0.9 m <br />) +
8 cm80 mm <br />0.08 m <br /> (30 cm300 mm <br />0.3 m <br />) +
1/4 +  and 2/3 +
not articulate +
not +, spinulose +  and serrate +
sessile +  and petiolulate +
inequilateral +
enlarged +  and reduced +
Amer. Fern J. +
round +, cuplike +, hoodlike +, reniform +, falcate +  and linear +
2 +  and 3 +
light-brown +
persistent +
linear;ovate +
discrete +
reniform +  and oblong +
dictyostelic +, unbranched +  and branched +
short-creeping +  and erect +
Dryopteris arguta +
Dryopteris +
species +
spinelike +
anastomosing +  and simple +
epiphytic +  and hemiepiphytic +