View source for Eutrochium purpureum

{{Treatment/ID
|accepted_name=Eutrochium purpureum
|accepted_authority=(Linnaeus) E. E. Lamont
|publications={{Treatment/Publication
|title=Sida
|place=21: 902. 2004
|year=2004
}}
|common_names=Sweetscented or sweet joepyeweed
|basionyms={{Treatment/ID/Basionym
|name=Eupatorium purpureum
|authority=Linnaeus
|rank=species
|publication_title=Sp. Pl.
|publication_place=2: 838. 1753
}}
|synonyms={{Treatment/ID/Synonym
|name=Eupatoriadelphus purpureus
|authority=(Linnaeus) R. M. King & H. Robinson
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Eutrochium;Eutrochium purpureum
|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>[[Eutrochium]]</div><div class="higher-taxon"><small>species</small>[[Eutrochium purpureum]]</div></div>
|volume=Volume 21
|mention_page=page 475
|treatment_page=page 477
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>30–200 cm. <b>Stems</b> usually dark purple at nodes, usually otherwise greenish, rarely purplish green, usually solid, rarely ± hollow near bases, glabrous proximally, ± glandular-puberulent distally and among heads. <b>Leaves</b> mostly in 3s–4s(–5s); petioles 5–15(–20) mm, glabrous or sparingly puberulent, rarely ciliate; blades pinnately veined, lance-ovate or ovate to deltate-ovate, mostly (7–)9–26(–30) × (2.5–)3–15(–18) cm, bases abruptly or gradually tapered, margins coarsely serrate, abaxial faces sparingly and minutely gland-dotted and densely pubescent to glabrate, adaxial faces sparingly puberulent and glabrescent or glabrous. <b>Heads</b> in loose, convex, compound corymbiform arrays. <b>Involucres</b> often purplish, 6.5–9 × 2.5–5 mm. <b>Phyllaries</b> usually glabrous, sometimes sparsely hairy. <b>Florets</b> (4–)5–7(–8); corollas usually pale pinkish or purplish, 4.5–7 mm. <b>Cypselae</b> 3–4.5 mm.</span><!--

-->{{Treatment/Body
|distribution=North America.
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
--><p><i>Eutrochium purpureum</i> is morphologically variable and is known to hybridize with all other species in the genus (E. E. Lamont 1995). Historically, more than a dozen infraspecific taxa have been recognized; the extent of intergradation and the lack of correlation among varying traits tend to make recognition of more than two varieties impractical.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves: abaxial faces usually glabrous, sometimes sparsely to densely hairy along major veins (hairs fine, simple, 1-cellular); s New Hampshire to n Florida, w to se Minnesota, Iowa, and e Oklahoma
|[[Eutrochium purpureum var. purpureum|Eutrochium purpureum var. purpureum]]
|-id=key-0-1
|1
|Leaves: abaxial faces densely and persistently puberulent to villous; s Minnesota, Iowa, and ne Kansas to s Wisconsin, n Illinois, and n Missouri
|[[Eutrochium purpureum var. holzingeri|Eutrochium purpureum var. holzingeri]]
|}
</div></div><!--

-->{{#Taxon:
name=Eutrochium purpureum
|authority=(Linnaeus) E. E. Lamont
|rank=species
|parent rank=genus
|synonyms=Eupatoriadelphus purpureus
|basionyms=Eupatorium purpureum
|family=Asteraceae
|distribution=North America.
|reference=None
|publication title=Sida
|publication year=2004
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V21_1197.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Eutrochium
|species=Eutrochium purpureum
}}<!--

-->[[Category:Treatment]][[Category:Eutrochium]]