View source for Polystichum imbricans subsp. imbricans

{{Treatment/ID
|accepted_name=Polystichum imbricans subsp. imbricans
|accepted_authority=(D. C. Eaton) D. H. Wagner
|publications=
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Polystichum munitum subsp. nudatum
|authority=(D. C. Eaton) Ewan
|rank=subspecies
}}
|hierarchy=Dryopteridaceae;Polystichum;Polystichum imbricans;Polystichum imbricans subsp. imbricans
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Dryopteridaceae]]</div><div class="higher-taxon"><small>genus</small>[[Polystichum]]</div><div class="higher-taxon"><small>species</small>[[Polystichum imbricans]]</div><div class="higher-taxon"><small>subspecies</small>[[Polystichum imbricans subsp. imbricans]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>decumbent to ascending. <b>Leaves</b> stiffly erect, 2.5–5 dm. <b>Pinnae</b> lanceolate-oblong, less than 5 times longer than wide, twisted out of plane of blade (adaxial surfaces facing upward like Venetian blinds), base usually cupped, apex cuspidate. <b>Indusia</b> entire.</span><!--

-->{{Treatment/Body
|habitat=Rooted at base of boulders or in cliff crevices in drier sites of mesic montane forests
|elevation=0–2500 m
|distribution=B.C.;Calif.;Oreg.;Wash.
|discussion=<p><i>Polystichum imbricans </i>subsp.<i> imbricans</i> grows in the Coast Ranges and the Sierra-Cascade axis. It is isolated in the Wallowa Mountains of eastern Oregon.</p><!--
--><p>Sun forms of <i>Polystichum munitum</i> are often mistaken for <i>P. imbricans</i>; characteristics of the distal petiolar scales and indusial margins are more reliable than gross morphologic features for distinguishing them. <i>Polystichum imbricans</i> has narrow distal petiolar scales that fall off early; <i>P. munitum</i> has wide distal petiolar scales (the largest more than 1 mm wide) that are persistent. <i>Polystichum imbricans</i> hybridizes readily with <i>P. munitum</i>, the hybrids usually being sterile but in some places forming hybrid swarms because of partial fertility of the hybrids (D. H. Wagner 1979). The hybrids with <i>P. californicum</i> are discussed under that species.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Polystichum imbricans subsp. imbricans
|authority=(D. C. Eaton) D. H. Wagner
|rank=subspecies
|parent rank=species
|synonyms=Polystichum munitum subsp. nudatum
|basionyms=
|family=Dryopteridaceae
|habitat=Rooted at base of boulders or in cliff crevices in drier sites of mesic montane forests
|elevation=0–2500 m
|distribution=B.C.;Calif.;Oreg.;Wash.
|reference=None
|publication title=
|publication year=
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_814.xml
|genus=Polystichum
|species=Polystichum imbricans
|subspecies=Polystichum imbricans subsp. imbricans
}}<!--

-->[[Category:Treatment]][[Category:Polystichum imbricans]]