View source for Equisetum hyemale subsp. affine

{{Treatment/ID
|accepted_name=Equisetum hyemale subsp. affine
|accepted_authority=(Engelmann) Calder & Roy L. Taylor
|publications={{Treatment/Publication
|title=Canad. J. Bot.
|place=43: 1387. 1965
|year=1965
}}
|basionyms={{Treatment/ID/Basionym
|name=Equisetum robustum var. affine
|authority=Engelmann
|publication_title=Amer. J. Sci. Arts
|publication_place=46: 88. 1844
}}
|synonyms={{Treatment/ID/Synonym
|name=Equisetum hyemale var. affine
|authority=(Engelmann) A.A. Eaton
}} {{Treatment/ID/Synonym
|name=Equisetum hyemale var. californicum
|authority=J.Milde
}} {{Treatment/ID/Synonym
|name=Equisetum hyemale var. pseudohyemale
|authority=(Farwell) C.V. Morton
}} {{Treatment/ID/Synonym
|name=Equisetum hyemale var. robustum
|authority=(A.Braun) A.A. Eaton
}} {{Treatment/ID/Synonym
|name=Equisetum prealtum
|authority=unknown
}}
|hierarchy=Equisetaceae;Equisetum;Equisetum subg. Equisetum;Equisetum hyemale;Equisetum hyemale subsp. affine
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Equisetaceae]]</div><div class="higher-taxon"><small>genus</small>[[Equisetum]]</div><div class="higher-taxon"><small>subgenus</small>[[Equisetum subg. Equisetum]]</div><div class="higher-taxon"><small>species</small>[[Equisetum hyemale]]</div><div class="higher-taxon"><small>subspecies</small>[[Equisetum hyemale subsp. affine]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Aerial </b>stems persisting more than a year, unbranched, 18–220 cm; lines of stomates single; ridges 14–50. <b>Sheaths</b> when mature dark-girdled, brown to gray above girdle, squarish in face view, 4.5–17 × 3.5–18 mm; teeth 14–50, articulate and promptly shed or persistent. <b>Cone</b> apex pointed; spores green, spheric. <b>2n</b> =216.</span><!--

-->{{Treatment/Body
|phenology=Cones maturing in summer, old stems sometimes developing branches with cones in spring.
|habitat=Moist roadsides, riverbanks, lakeshores, woodlands
|elevation=0–3000 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska including the Aleutian Islands;all other states;Mexico;Central America in Guatemala.
|discussion=<p>In southern and central to western regions plants tend to be taller and have more persistent teeth (<i>Equisetum</i> robustum, E. prealtum); in the Far West they often have bituberculate ridges (<i>E. hyemale</i> <i></i></i>var.<i><i> californicum</i>). <i>Equisetum hyemale</i> subsp. hyemale is found in Europe and Asia to northwestern China in Xinjiang.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Equisetum hyemale subsp. affine
|author=
|authority=(Engelmann) Calder & Roy L. Taylor
|rank=subspecies
|parent rank=species
|synonyms=Equisetum hyemale var. affine;Equisetum hyemale var. californicum;Equisetum hyemale var. pseudohyemale;Equisetum hyemale var. robustum;Equisetum prealtum
|basionyms=Equisetum robustum var. affine
|family=Equisetaceae
|phenology=Cones maturing in summer, old stems sometimes developing branches with cones in spring.
|habitat=Moist roadsides, riverbanks, lakeshores, woodlands
|elevation=0–3000 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska including the Aleutian Islands;all other states;Mexico;Central America in Guatemala.
|reference=None
|publication title=Canad. J. Bot.
|publication year=1965
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V2/V2_735.xml
|genus=Equisetum
|subgenus=Equisetum subg. Equisetum
|species=Equisetum hyemale
|subspecies=Equisetum hyemale subsp. affine
}}<!--

-->[[Category:Treatment]][[Category:Equisetum hyemale]]