View source for Eupatorium perfoliatum

{{Treatment/ID
|accepted_name=Eupatorium perfoliatum
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 838. 1753
|year=1753
}}
|common_names=Common boneset;eupatoire perfoliée
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Eupatorium chapmanii
|authority=Small
|rank=species
}} {{Treatment/ID/Synonym
|name=Eupatorium perfoliatum var. colpophilum
|authority=Fernald & Griscom
|rank=variety
}} {{Treatment/ID/Synonym
|name=Eupatorium perfoliatum var. cuneatum
|authority=Engelmann
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Eupatorium;Eupatorium perfoliatum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Eupatorieae]]</div><div class="higher-taxon"><small>genus</small>[[Eupatorium]]</div><div class="higher-taxon"><small>species</small>[[Eupatorium perfoliatum]]</div></div>
|volume=Volume 21
|mention_page=page 463, 467, 469, 472, 474
|treatment_page=page 471
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 40–100+ cm. <b>Stems</b> (from short caudices) single, sparsely branched distally, puberulent throughout. <b>Leaves</b> usually opposite (sometimes whorled); sessile; blades pinnately nerved, oblong (tapering toward apices), 50–150+ × 15–40 mm, bases connate-perfoliate, margins serrate, apices acute, faces pilose, gland-dotted (abaxial), glabrate, not gland-dotted (adaxial). <b>Heads</b> in corymbiform arrays. <b>Phyllaries</b> 7–10 in 1–2 series, oblong, 2–4.5 × 0.6–1 mm, apices (whitish) acute to acuminate, abaxial faces villous or puberulent, gland-dotted. <b>Florets</b> 7–11; corollas 2.5–3 mm. <b>Cypselae</b> 1.5–2 mm; pappi of 20–30 bristles 3–3.5 mm. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|phenology=Flowering Aug–Oct.
|habitat=Moist, low ground, marshes, roadsides, swamps, wet pastures
|elevation=10–500+ m
|distribution=Man.;N.B.;N.S.;Ont.;P.E.I.;Que.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.
|discussion=<p><i>Eupatorium perfoliatum</i> is both distinctive, with its perfoliate leaf bases, and extraordinarily widespread. Hybrids between <i>E. perfoliatum</i> and other species of <i>Eupatorium</i> have been reported. The name <i>E. resinosum</i> var. kentuckiense Fernald is based on hybrids between <i>E. perfoliatum</i> and <i>E. serotinum</i> (= E. ×truncatum Muhlenberg ex Willdenow). <i>Eupatorium perfoliatum</i> var. colpophilum refers to populations characterized by narrower, more leathery leaves found in the extreme northeastern portion of the range.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Eupatorium perfoliatum
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Eupatorium chapmanii;Eupatorium perfoliatum var. colpophilum;Eupatorium perfoliatum var. cuneatum
|basionyms=
|family=Asteraceae
|phenology=Flowering Aug–Oct.
|habitat=Moist, low ground, marshes, roadsides, swamps, wet pastures
|elevation=10–500+ m
|distribution=Man.;N.B.;N.S.;Ont.;P.E.I.;Que.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.
|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/V21_1178.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Eupatorium
|species=Eupatorium perfoliatum
}}<!--

-->[[Category:Treatment]][[Category:Eupatorium]]