View source for Sonchus arvensis

{{Treatment/ID
|accepted_name=Sonchus arvensis
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 793. 1753
|year=1753
}}
|common_names=Field sow-thistle;laiteron des champs
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Sonchus;Sonchus arvensis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cichorieae]]</div><div class="higher-taxon"><small>genus</small>[[Sonchus]]</div><div class="higher-taxon"><small>species</small>[[Sonchus arvensis]]</div></div>
|volume=Volume 19
|mention_page=
|treatment_page=page 274
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 0–150(–200) cm, usually rhizomatous or stoloniferous. <b>Stem</b> bases hard, sometimes ± woody. <b>Leaves</b>: blades of mid cauline oblong to lanceolate, (3–)6–40 × 2–15 cm, bases auriculate, auricles straight or curved, rounded, margins usually pinnately lobed, lobes ± deltate, not constricted at bases, terminals usually larger than laterals, dentate or entire. <b>Peduncles</b> sessile- or stipitate-glandular. <b>Involucres</b> 10–17+ mm. <b>Phyllaries</b> sessile- or stipitate-glandular. <b>Corollas</b>: ligules ± equaling tubes. <b>Cypselae</b> dark brown, oblanceoloid to ellipsoid, 2.5–3.5 mm, ribs 4–5(+) on each face, faces transversely rugulose to tuberculate across and between ribs; pappi 8–14 mm. <b>2n</b> = 36, 54.</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;Man.;N.B.;N.S.;N.W.T.;Nfld. and Labr. (Nfld.);Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Conn.;Del.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Mass.;Md.;Mich.;Minn.;Miss.;Mo.;Mont.;N.C.;N.Dak.;N.H.;N.J.;N.Y.;Nebr.;Nev.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Tenn.;Utah;Va.;Vt.;W.Va.;Wash.;Wis.;Wyo.;Europe;introduced also in South America;Asia;Africa;Pacific Islands (New Zealand);Australia.
|discussion=<p>Subspecies 2 (2 in the flora).</p><!--
--><p><i>Sonchus arvensis</i> is introduced in temperate regions of all continents. Plants of the species prefer relatively cooler, moister climates and are more abundant in the northern part of North America.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Peduncles stipitate-glandular; phyllaries stipitate- glandular
|[[Sonchus arvensis subsp. arvensis|Sonchus arvensis subsp. arvensis]]
|-id=key-0-1
|1
|Peduncles sessile-glandular; phyllaries usually sessile-glandular, rarely tomentose
|[[Sonchus arvensis subsp. uliginosus|Sonchus arvensis subsp. uliginosus]]
|}
</div></div><!--

-->{{#Taxon:
name=Sonchus arvensis
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=Alta.;B.C.;Man.;N.B.;N.S.;N.W.T.;Nfld. and Labr. (Nfld.);Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Conn.;Del.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Mass.;Md.;Mich.;Minn.;Miss.;Mo.;Mont.;N.C.;N.Dak.;N.H.;N.J.;N.Y.;Nebr.;Nev.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Tenn.;Utah;Va.;Vt.;W.Va.;Wash.;Wis.;Wyo.;Europe;introduced also in South America;Asia;Africa;Pacific Islands (New Zealand);Australia.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=Introduced
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_376.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Sonchus
|species=Sonchus arvensis
}}<!--

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[[Category:Treatment]]
[[Category:Sonchus]]
[[Category:Revised Since Print]]