Difference between revisions of "Dryopteris marginalis"
Manual 632. 1848.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Leaves </b>monomorphic, green through winter, 30–100 × 10–25 cm. <b>Petiole</b> 1/4–1/3 length of leaf, scaly at base; scales in dense tuft, pale tawny. <b>Blade</b> bluish green, ovate-lanceolate, pinnate-pinnatifid to 2-pinnate at base, leathery, not glandular. <b>Pinnae</b> ± in plane of blade, lanceolate; basal pinnae lanceolate, slightly reduced, basal pinnules longer than adjacent pinnules, basal basiscopic pinnule longer than basal acroscopic pinnule; pinnule margins shallowly crenate to nearly entire. <b>Sori</b> near margin of segments. <b>Indusia</b> lacking glands. <b>2n</b> = 82.</span><!-- |
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|genus=Dryopteris | |genus=Dryopteris | ||
|species=Dryopteris marginalis | |species=Dryopteris marginalis | ||
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Revision as of 13:27, 27 July 2019
Leaves monomorphic, green through winter, 30–100 × 10–25 cm. Petiole 1/4–1/3 length of leaf, scaly at base; scales in dense tuft, pale tawny. Blade bluish green, ovate-lanceolate, pinnate-pinnatifid to 2-pinnate at base, leathery, not glandular. Pinnae ± in plane of blade, lanceolate; basal pinnae lanceolate, slightly reduced, basal pinnules longer than adjacent pinnules, basal basiscopic pinnule longer than basal acroscopic pinnule; pinnule margins shallowly crenate to nearly entire. Sori near margin of segments. Indusia lacking glands. 2n = 82.
Habitat: Rocky, wooded slopes and ravines, edges of woods, stream banks and roadbanks, and rock walls
Elevation: 50–1500 m
Distribution
Greenland, N.B., Nfld., N.S., Ont., Que., Ala., Ark., Conn., Del., Ga., Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.
Discussion
Dryopteris marginalis is an eastern North America endemic. Even though this species hybridizes with 10 other species, and some of these hybrids are fairly common, D. marginalis is not known to be involved in the formation of any fertile polyploid. Hybrids can be detected by malformed spores and the nearly marginal sorus position.
Selected References
None.