Difference between revisions of "Dryopteris carthusiana"
Bull. Soc. Bot. France 105: 339. 1959.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Leaves </b>monomorphic, dying in winter, 15–75 × 10–30 cm. <b>Petiole</b> 1/4–1/3 length of leaf, scaly at least at base; scales scattered, tan. <b>Blade</b> light green, ovate-lanceolate, 2–3-pinnate-pinnatifid, herbaceous, not glandular. <b>Pinnae</b> ± in plane of blade, lance-oblong; basal pinnae lanceolate-deltate, slightly reduced, basal pinnules usually longer than adjacent pinnules, basal basiscopic pinnule longer than basal acroscopic pinnule; pinnule margins serrate, teeth spiny. <b>Sori</b> midway between midvein and margin of segments. <b>Indusia</b> lacking glands. <b>2n</b> = 164.</span><!-- |
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|genus=Dryopteris | |genus=Dryopteris | ||
|species=Dryopteris carthusiana | |species=Dryopteris carthusiana | ||
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Revision as of 13:22, 27 July 2019
Leaves monomorphic, dying in winter, 15–75 × 10–30 cm. Petiole 1/4–1/3 length of leaf, scaly at least at base; scales scattered, tan. Blade light green, ovate-lanceolate, 2–3-pinnate-pinnatifid, herbaceous, not glandular. Pinnae ± in plane of blade, lance-oblong; basal pinnae lanceolate-deltate, slightly reduced, basal pinnules usually longer than adjacent pinnules, basal basiscopic pinnule longer than basal acroscopic pinnule; pinnule margins serrate, teeth spiny. Sori midway between midvein and margin of segments. Indusia lacking glands. 2n = 164.
Habitat: Swampy woods, moist wooded slopes, stream banks, and conifer plantations
Elevation: 0–1200 m
Distribution
Alta., B.C., Man., N.B., Nfld., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Ark., Conn., Del., Idaho, Ill., Ind., Iowa, Ky., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., Wash., W.Va., Wis., Eurasia.
Discussion
Dryopteris carthusiana is tetraploid. Dryopteris intermedia is one parent, as indicated by chromosome pairing in their hybrid D. × triploidea Wherry. The other parent is the hypothetical missing ancestral species " D. semicristata " (see discussion for D. cristata). Dryopteris carthusiana hybridizes with five species; hybrids can be separated from D. intermedia by the lack of glandular hairs and by having 2-pinnate leaves.
Selected References
None.