View source for Athyrium filix-femina var. angustum

{{Treatment/ID
|accepted_name=Athyrium filix-femina var. angustum
|accepted_authority=(Willdenow) G. Lawson
|publications={{Treatment/Publication
|title=Edinburgh New Philos. J.
|place=n.s. 19: 115. 1864
|year=1864
}}
|common_names=Northern lady fern
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Aspidium angustum
|authority=(Willdenow) C. Presl
|rank=species
|publication_title=Sp. Pl.
|publication_place=5(1): 277. 1810
}}
|synonyms={{Treatment/ID/Synonym
|name=Athyrium angustum
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Athyrium filix-femina subsp. angustum
|authority=(Willdenow) Clausen
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Athyrium filix-femina var. michauxii
|authority=(Sprengel) Farwell
|rank=variety
}}
|hierarchy=Dryopteridaceae;Athyrium;Athyrium filix-femina;Athyrium filix-femina var. angustum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Dryopteridaceae]]</div><div class="higher-taxon"><small>genus</small>[[Athyrium]]</div><div class="higher-taxon"><small>species</small>[[Athyrium filix-femina]]</div><div class="higher-taxon"><small>variety</small>[[Athyrium filix-femina var. angustum]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Petiole </b>(7–)15–55 cm; scales brown to dark brown, linear-lanceolate, 8(–10) × 2 mm. <b>Blade</b> elliptic, 2-pinnatifid to 2-pinnate, (20–)30–75 × (5–)10–35 cm, moderately narrowed proximally, broadest near or just below middle, apex acuminate. <b>Pinnae</b> short-stalked or sessile, oblong-lanceolate. <b>Pinnules</b> decurrent onto costal wing or sessile, linear to oblong, base unequally cuneate, apex obtuse to acute or in larger leaves acuminate, lobed halfway or more to costules. <b>Rachis</b>, costae, and costules glabrous or with pale glands. <b>Sori</b> straight, less frequently hooked at distal end or horseshoe-shaped; sporangial stalks bearing glandular hairs; indusia irregularly dentate, ± ciliate. <b>Spores</b> yellow or brown. <b>2n</b> = 80.</span><!--

-->{{Treatment/Body
|habitat=Moist woods, swamps, thickets
|elevation=0–1100 m
|distribution=Greenland;Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;P.E.I.;Que.;Sask.;Conn.;Del.;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Pa.;R.I.;S.Dak.;Vt.;Va.;W.Va.;Wis.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Athyrium filix-femina var. angustum
|authority=(Willdenow) G. Lawson
|rank=variety
|parent rank=species
|synonyms=Athyrium angustum;Athyrium filix-femina subsp. angustum;Athyrium filix-femina var. michauxii
|basionyms=Aspidium angustum
|family=Dryopteridaceae
|habitat=Moist woods, swamps, thickets
|elevation=0–1100 m
|distribution=Greenland;Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;P.E.I.;Que.;Sask.;Conn.;Del.;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Pa.;R.I.;S.Dak.;Vt.;Va.;W.Va.;Wis.
|reference=None
|publication title=Edinburgh New Philos. J.
|publication year=1864
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_352.xml
|genus=Athyrium
|species=Athyrium filix-femina
|variety=Athyrium filix-femina var. angustum
}}<!--

-->[[Category:Treatment]][[Category:Athyrium filix-femina]]