View source for Ageratina adenophora

{{Treatment/ID
|accepted_name=Ageratina adenophora
|accepted_authority=(Sprengel) R. M. King & H. Robinson
|publications={{Treatment/Publication
|title=Phytologia
|place=19: 211. 1970
|year=1970
}}
|common_names=Crofton weed;sticky snakeroot
|basionyms={{Treatment/ID/Basionym
|name=Eupatorium adenophorum
|authority=Sprengel
|publication_title=Syst. Veg.
|publication_place=3: 420. 1826,;  4(qto.): 122, plate 346. 1820, not Michaux 1803
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Ageratina;Ageratina adenophora
|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>[[Ageratina]]</div><div class="higher-taxon"><small>species</small>[[Ageratina adenophora]]</div></div>
|volume=Volume 21
|mention_page=page 547, 548
|treatment_page=page 553
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Subshrubs,</b> 50–220 cm. <b>Stems</b> (usually purplish when young) erect, stipitate-glandular. <b>Leaves</b> opposite; petioles 10–25 mm; blades (abaxially purple) ovate-lanceolate or ovate-deltate to lanceolate-ovate, (1.5–)2.5–5.5(–8) × 1.5–4(–6) cm, bases cuneate to obtuse or nearly truncate, margins serrate, apices acute to acuminate, abaxial faces stipitate- to sessile-glandular. <b>Heads</b> clustered. <b>Peduncles</b> 5–12 mm, densely stipitate-glandular and sometimes also sparsely viscid-puberulent. <b>Involucres</b> 3.5–4 mm. <b>Phyllaries</b>: apices acute, abaxial faces stipitate-glandular. <b>Corollas</b> white, pink-tinged, lobes sparsely hispidulous. <b>Cypselae</b> glabrous. <b>2n</b> = 51.</span><!--

-->{{Treatment/Body
|phenology=Flowering Mar–Aug(–Sep).
|habitat=Stream margins, ditches, road embankments, hillsides
|elevation=400–900 m
|distribution=Intoduced;Calif.;Mexico;also introduced in Europe;Pacific Islands (New Zealand).
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Ageratina adenophora
|author=
|authority=(Sprengel) R. M. King & H. Robinson
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Eupatorium adenophorum
|family=Asteraceae
|phenology=Flowering Mar–Aug(–Sep).
|habitat=Stream margins, ditches, road embankments, hillsides
|elevation=400–900 m
|distribution=Intoduced;Calif.;Mexico;also introduced in Europe;Pacific Islands (New Zealand).
|reference=None
|publication title=Phytologia
|publication year=1970
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_1404.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Ageratina
|species=Ageratina adenophora
}}<!--

-->[[Category:Treatment]][[Category:Ageratina]]