View source for Equisetum ×ferrissii

{{Treatment/ID
|accepted_name=Equisetum ×ferrissii
|accepted_authority=Clute
|publications={{Treatment/Publication
|title=Fern Bull.
|place=12: 22. 1904
|year=1904
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Equisetum hyemale var. elatum
|authority=(Engelmann) C.V. Morton
}} {{Treatment/ID/Synonym
|name=Equisetum hyemale var. intermedium
|authority=A.A. Eaton
}}
|hierarchy=Equisetaceae;Equisetum;Equisetum subg. Equisetum;Equisetum ×ferrissii
|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 ×ferrissii]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Aerial </b>stems having basal part persisting over winter, unbranched, 20–180 cm; lines of stomates single; ridges 14–32. <b>Sheaths</b> elongate, 7–17 × 3–12 mm, becoming dark-girdled with age; teeth 14–32, articulate and promptly shed or persistent. <b>Cone</b> apex pointed; spores white, misshapen.</span><!--

-->{{Treatment/Body
|phenology=Cones maturing in late spring–early summer but spores not shed.
|habitat=Moist lakeshores, riverbanks, roadsides, prairies
|elevation=0–2500 m
|distribution=Alta.;B.C.;Ont.;Que.;Sask.;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.Dak.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;n Mexico including Baja California.
|discussion=<p>The hybrid between <i>Equisetum hyemale</i> and <i>E. laevigatum</i>, <i>E.</i> × <i>ferrissii</i>, was mistaken for <i>E. laevigatum</i> by Schaffner and some subsequent authors. Although sterile, it exists outside the range of <i>E. laevigatum</i>, and apparently it is dispersed vegetatively (R.L. Hauke 1963). Perhaps it has persisted in some areas from a time when the parents were both there. <i>Equisetum</i> × <i>ferrissii</i> has been reported from Maine, New Hampshire, Rhode Island, South Dakota, and Vermont, but I have not seen specimens from those states.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Equisetum ×ferrissii
|author=
|authority=Clute
|rank=species
|parent rank=subgenus
|synonyms=Equisetum hyemale var. elatum;Equisetum hyemale var. intermedium
|basionyms=
|family=Equisetaceae
|phenology=Cones maturing in late spring–early summer but spores not shed.
|habitat=Moist lakeshores, riverbanks, roadsides, prairies
|elevation=0–2500 m
|distribution=Alta.;B.C.;Ont.;Que.;Sask.;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.Dak.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;n Mexico including Baja California.
|reference=None
|publication title=Fern Bull.
|publication year=1904
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V2/V2_391.xml
|genus=Equisetum
|subgenus=Equisetum subg. Equisetum
|species=Equisetum ×ferrissii
}}<!--

-->[[Category:Treatment]][[Category:Equisetum subg. Equisetum]]