Difference between revisions of "Dryopteris clintoniana"
Proc. Staten Island Assoc. Arts 1: 64. 1906.
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|name=Aspidium cristatum var. clintonianum | |name=Aspidium cristatum var. clintonianum | ||
|authority=D. C. Eaton | |authority=D. C. Eaton | ||
| + | |rank=variety | ||
|publication_title=in A. Gray, Manual ed. | |publication_title=in A. Gray, Manual ed. | ||
|publication_place=5, 665. 1867 | |publication_place=5, 665. 1867 | ||
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|name=Dryopteris cristata var. clintoniana | |name=Dryopteris cristata var. clintoniana | ||
|authority=(D. C. Eaton) L. Underwood | |authority=(D. C. Eaton) L. Underwood | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Dryopteridaceae;Dryopteris;Dryopteris clintoniana | |hierarchy=Dryopteridaceae;Dryopteris;Dryopteris clintoniana | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Dryopteris clintoniana | name=Dryopteris clintoniana | ||
| − | |||
|authority=(D. C. Eaton) Dowell | |authority=(D. C. Eaton) Dowell | ||
|rank=species | |rank=species | ||
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|publication year=1906 | |publication year=1906 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V2/V2_547.xml |
|genus=Dryopteris | |genus=Dryopteris | ||
|species=Dryopteris clintoniana | |species=Dryopteris clintoniana | ||
Revision as of 19:48, 16 December 2019
Leaves dimorphic, 45–100 × 12–20 cm; fertile leaves dying back in winter; sterile leaves 1–several, smaller, green through winter. Petiole 1/4–1/3 length of leaf, scaly at least at base; scales scattered, tan, sometimes with dark brown center. Blade green, lanceolate, with nearly parallel sides, pinnate-pinnatifid, herbaceous, not glandular. Pinnae of fertile leaves twisted out of plane of blade but not fully perpendicular to it, narrowly elongate-deltate; basal pinnae narrowly elongate-deltate, much reduced; basal pinnules longer than or equal to adjacent pinnules, basal basiscopic pinnule and basal acroscopic pinnule equal; pinnule margins serrate or biserrate, with spiny teeth. Sori midway between midvein and margin of segments. Indusia lacking glands. 2n = 246.
Habitat: Swampy woods
Elevation: 50–600 m
Distribution
N.B., Ont., Que., Conn., Ind., Maine, Mass., Mich., N.H., N.J., N.Y., Ohio, Pa., R.I., Vt.
Discussion
Dryopteris clintoniana is a North American endemic and an allohexaploid derived from D. cristata and D. goldiana. Dryopteris clintoniana hybridizes with six species. Hybrids can be identified by the fairly narrow blades and elongate-deltate proximal pinnae.
Selected References
None.