View source for Eupatorium album

{{Treatment/ID
|accepted_name=Eupatorium album
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Mant. Pl.,
|place=111. 1767
|year=1767
}}, {{Treatment/Publication
|title=Syst. Nat. ed.
|place=12, 2: 536. 1767
|year=1767
}}
|common_names=White thoroughwort
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Eupatorium;Eupatorium album
|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 album]]</div></div>
|volume=Volume 21
|mention_page=page 463, 471
|treatment_page=page 465
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 40–100+ cm. <b>Stems</b> (from short caudices or stout rhizomes) single, sparsely branched distally, pubescent throughout. <b>Leaves</b> usually opposite (distal sometimes alternate); sessile; blades ± 3-nerved or pinnately nerved, elliptic to oblanceolate, 30–120 × 10–40 mm (lengths mostly 3–4 times widths), bases narrowly cuneate (sometimes oblique), margins subentire, serrate, or serrulate, apices rounded to acute, faces setulose (denser on midribs and veinlets) to glabrate, usually gland-dotted. <b>Heads</b> in corymbiform arrays. <b>Phyllaries</b> 9–15 in 2–4 series, linear, 1.5–9 × 0.6–1 mm, apices acuminate to attenuate, sometimes mucronate, abaxial faces pubescent throughout, gland-dotted. <b>Florets</b> (4–)5; corollas 4–4.5 mm. <b>Cypselae</b> 2.5–3.5 mm; pappi of 40–50 bristles 3.5–4.5 mm.</span><!--

-->{{Treatment/Body
|distribution=Ala.;Conn.;D.C.;Del.;Fla.;Ga.;Ky.;La.;Md.;Miss.;N.C.;N.J.;N.Y.;Ohio;Pa.;S.C.;Tenn.;Va.;W.Va.
|discussion=<p>Varieties 3 (3 in the flora).</p><!--
--><p><i>Eupatorium album</i> is represented by widespread diploid populations and by polyploid, apomictic populations, segregated as varieties, that may have arisen by hybridization with other species. Molecular data suggest that <i></i>var.<i> vaseyi</i> arose via hybridization between <i></i>var.<i> album</i> and <i>E. sessilifolium</i>. They also suggest that <i>E. album </i>var.<i> subvenosum</i> arose from hybridization between <i>E. album </i>var.<i> album</i> and <i>E. serotinum</i>.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaf blades: margins coarsely serrate, apices obtuse to rounded, faces pubescent
|[[Eupatorium album var. album|Eupatorium album var. album]]
|-id=key-0-1
|1
|Leaf blades: margins subentire, serrulate, or serrate, apices acute, faces pubescent to glabrate
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Leaf blades 3-nerved from bases, 40–70 × 10–20 mm, margins subentire to serrulate
|[[Eupatorium album var. subvenosum|Eupatorium album var. subvenosum]]
|-id=key-0-2
|2
|Leaf blades 3-nerved distal to bases, 50–110 × 20–40 mm, margins evenly serrate
|[[Eupatorium album var. vaseyi|Eupatorium album var. vaseyi]]
|}
</div></div><!--

-->{{#Taxon:
name=Eupatorium album
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=Ala.;Conn.;D.C.;Del.;Fla.;Ga.;Ky.;La.;Md.;Miss.;N.C.;N.J.;N.Y.;Ohio;Pa.;S.C.;Tenn.;Va.;W.Va.
|reference=None
|publication title=Mant. Pl.,;Syst. Nat. ed.
|publication year=1767;1767
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V21_1156.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Eupatorium
|species=Eupatorium album
}}<!--

-->

[[Category:Treatment]]
[[Category:Eupatorium]]
[[Category:Revision Pending]]