View source for Ageratum conyzoides

{{Treatment/ID
|accepted_name=Ageratum conyzoides
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 839. 1753
|year=1753
}}
|common_names=Tropical whiteweed
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Ageratum latifolium
|authority=Cavanilles
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Ageratum;Ageratum conyzoides
|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>[[Ageratum]]</div><div class="higher-taxon"><small>species</small>[[Ageratum conyzoides]]</div></div>
|volume=Volume 21
|mention_page=page 483
|treatment_page=page 482
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> perennials, or sub-shrubs, 20–150 cm (fibrous-rooted). <b>Stems</b> erect, sparsely to densely villous. <b>Leaf</b> blades ovate to elliptic-oblong, 2–8 × 1–5 cm, margins toothed, abaxial faces sparsely pilose and gland-dotted. <b>Peduncles</b> minutely puberulent and sparsely to densely pilose, eglandular. <b>Involucres</b> 3–3.5 × 4–5 mm. <b>Phyllaries</b> oblong-lanceolate (0.8–1.2 mm wide), glabrous or sparsely pilose (margins often ciliate), eglandular, tips abruptly tapering, subulate, 0.5–1 mm. <b>Corollas</b> usually blue to lavender, sometimes white. <b>Cypselae</b> sparsely strigoso-hispidulous; pappi usually of scales 0.5–1.5(–3) mm, sometimes with tapering setae, rarely 0. <b>2n</b> = 20, 40.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jul–Aug.
|habitat=Disturbed sites, mostly coastal
|elevation=0–20 m
|distribution=Ala.;Calif.;Conn.;Fla.;Ga.;Ky.;Md.;Miss.;Mo.;N.C.;South America;introduced;Mexico;West Indies;Central America;Pacific Islands (Hawaii).
|discussion=<p><i>Ageratum conyzoides</i> is apparently native to South America. North American plants were escapes and naturalized from cultivation.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Ageratum conyzoides
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Ageratum latifolium
|basionyms=
|family=Asteraceae
|phenology=Flowering Jul–Aug.
|habitat=Disturbed sites, mostly coastal
|elevation=0–20 m
|distribution=Ala.;Calif.;Conn.;Fla.;Ga.;Ky.;Md.;Miss.;Mo.;N.C.;South America;introduced;Mexico;West Indies;Central America;Pacific Islands (Hawaii).
|introduced=true
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V21_1212.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Ageratum
|species=Ageratum conyzoides
}}<!--

-->[[Category:Treatment]][[Category:Ageratum]]