View source for Eutrochium maculatum

{{Treatment/ID
|accepted_name=Eutrochium maculatum
|accepted_authority=(Linnaeus) E. E. Lamont
|publications={{Treatment/Publication
|title=Sida
|place=21: 902. 2004
|year=2004
}}
|common_names=Spotted joepyeweed;eupatoire maculée
|basionyms={{Treatment/ID/Basionym
|name=Eupatorium maculatum
|authority=Linnaeus
|publication_title=Cent. Pl. I,
|publication_place=27. 1755
}}
|synonyms={{Treatment/ID/Synonym
|name=Eupatoriadelphus maculatus
|authority=(Linnaeus) R. M. King & H. Robinson
}} {{Treatment/ID/Synonym
|name=Eupatorium purpureum subsp. maculatum
|authority=(Linnaeus) Á. Löve & D. Löve
}} {{Treatment/ID/Synonym
|name=Eupatorium purpureum var. maculatum
|authority=(Linnaeus) Voss
}} {{Treatment/ID/Synonym
|name=Eupatorium trifoliatum var. maculatum
|authority=(Linnaeus) Farwell
}}
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Eutrochium;Eutrochium maculatum
|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 maculatum]]</div></div>
|volume=Volume 21
|mention_page=page 476
|treatment_page=page 475
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>60–200 cm. <b>Stems</b> usually purple-spotted, sometimes uniformly purple, usually solid, sometimes hollow near bases, glabrous proximally to densely puberulent throughout, glandular-puberulent distally. <b>Leaves</b> in (3s–)4s–5s(–6s); petioles 5–20 mm, glabrous or pubescent; blades pinnately veined, lance-elliptic to lanceolate or lance-ovate, mostly (6–)8–23(–30) × (1.5–)2–7(–9) cm, bases gradually or abruptly tapered, margins sharply serrate or doubly serrate, abaxial faces gland-dotted and densely pubescent to glabrate, adaxial faces sparingly hairy or glabrous. <b>Heads</b> in flat-topped, corymbiform arrays. <b>Involucres</b> often purplish, 6.5–9 × 3.5–7 mm. <b>Phyllaries</b> glabrous or densely pubescent. <b>Florets</b> (8–)9–20(–22); corollas purplish, 4.5–7.5 mm. <b>Cypselae</b> 3–5 mm. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|distribution=North America.
|discussion=<p>Varieties 3 (3 in the flora).</p><!--
--><p><i>Eutrochium maculatum</i> has the widest geographic distribution and greatest morphologic variability among species in the genus. The three varieties recognized here show intergradation where the ranges overlap.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Stems densely puberulent throughout; leaves densely pubescent on abaxial faces, relatively thick; mostly w of Mississippi River
|[[Eutrochium maculatum var. bruneri|Eutrochium maculatum var. bruneri]]
|-id=key-0-1
|1
|Stems glabrous proximally, puberulent among heads; leaves usually glabrate (seldom strongly puberulent) on abaxial faces, relatively thin; mostly e of Mississippi River
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Distalmost whorls of leaves subtending heads equaling or surpassing arrays of heads; maritime Canada, adjacent New England to ne Minnesota, n Michigan, and s Ontario
|[[Eutrochium maculatum var. foliosum|Eutrochium maculatum var. foliosum]]
|-id=key-0-2
|2
|Distalmost whorls of leaves subtending heads not equaling arrays of heads; Newfoundland to sw Ontario, s to n and w New England, Pennsylvania, North Carolina, Ohio, Indiana, Illinois, and Iowa
|[[Eutrochium maculatum var. maculatum|Eutrochium maculatum var. maculatum]]
|}
</div></div><!--

-->{{#Taxon:
name=Eutrochium maculatum
|author=
|authority=(Linnaeus) E. E. Lamont
|rank=species
|parent rank=genus
|synonyms=Eupatoriadelphus maculatus;Eupatorium purpureum subsp. maculatum;Eupatorium purpureum var. maculatum;Eupatorium trifoliatum var. maculatum
|basionyms=Eupatorium maculatum
|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/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_1192.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Eutrochium
|species=Eutrochium maculatum
}}<!--

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