View source for Lactuca canadensis

{{Treatment/ID
|accepted_name=Lactuca canadensis
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 796. 1753
|year=1753
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Lactuca canadensis var. latifolia
|authority=Kuntze
|rank=variety
}} {{Treatment/ID/Synonym
|name=Lactuca canadensis var. longifolia
|authority=(Michaux) Farwell
|rank=variety
}} {{Treatment/ID/Synonym
|name=Lactuca canadensis var. obovata
|authority=Wiegand
|rank=variety
}} {{Treatment/ID/Synonym
|name=Lactuca sagittifolia
|authority=
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Lactuca;Lactuca canadensis
|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>[[Lactuca]]</div><div class="higher-taxon"><small>species</small>[[Lactuca canadensis]]</div></div>
|volume=Volume 19
|mention_page=page 260
|treatment_page=page 261
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Biennials,</b> (15–)40–200(–450+) cm. <b>Leaves</b> on proximal 1/2–3/4 of each stem; blades of undivided cauline leaves oblong, obovate, or lanceolate to spatulate or lance-linear, margins entire or denticulate, midribs sometimes sparsely pilose. <b>Heads</b> in ± corymbiform to paniculiform arrays. <b>Involucres</b> 10–12+ mm. <b>Phyllaries</b> usually reflexed in fruit. <b>Florets</b> 15–20+; corollas bluish or yellowish, usually deliquescent. <b>Cypselae</b>: bodies brown (often mottled), ± flattened, elliptic, 5–6 mm, beaks ± filiform, 1–3 mm, faces 1(–3)-nerved; pappi white, 5–6 mm. <b>2n</b> = 34.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Oct.
|habitat=Roadsides, swamps, salt marshes, thickets
|elevation=0–2200 m
|distribution=B.C.;Man.;N.B.;N.S.;Ont.;P.E.I.;Que.;Yukon;Ala.;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico;Central America;Eurasia.
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Lactuca canadensis
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Lactuca canadensis var. latifolia;Lactuca canadensis var. longifolia;Lactuca canadensis var. obovata;Lactuca sagittifolia
|basionyms=
|family=Asteraceae
|phenology=Flowering Jun–Oct.
|habitat=Roadsides, swamps, salt marshes, thickets
|elevation=0–2200 m
|distribution=B.C.;Man.;N.B.;N.S.;Ont.;P.E.I.;Que.;Yukon;Ala.;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico;Central America;Eurasia.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V19_350.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Lactuca
|species=Lactuca canadensis
}}<!--

-->[[Category:Treatment]][[Category:Lactuca]]