View source for Ambrosia artemisiifolia

{{Treatment/ID
|accepted_name=Ambrosia artemisiifolia
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 988. 1753
|year=1753
}}
|common_names=Petite herbe à poux
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Ambrosia artemisiifolia var. elatior
|authority=(Linnaeus) Descourtilz
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ambrosia artemisiifolia var. paniculata
|authority=(Michaux) Blankinship
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ambrosia elatior
|authority=(Walter) Rydberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Ambrosia glandulosa
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Ambrosia monophylla
|authority=
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ambrosiinae;Ambrosia;Ambrosia artemisiifolia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Ambrosiinae]]</div><div class="higher-taxon"><small>genus</small>[[Ambrosia]]</div><div class="higher-taxon"><small>species</small>[[Ambrosia artemisiifolia]]</div></div>
|volume=Volume 21
|mention_page=page 11, 18
|treatment_page=page 15
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 10–60(–150+) cm. <b>Stems</b> erect. <b>Leaves</b> opposite (proximal) and alternate; petioles 25–35(–60+) mm; blades deltate to lanceolate or elliptic, 25–55(–90+) × 20–30(–50+) mm, 1–2-pinnately lobed, bases cuneate, ultimate margins entire or toothed, abaxial faces sparsely pilosulous to strigillose, adaxial faces strigillose, both gland-dotted. <b>Pistillate</b> heads clustered, proximal to staminates; florets 1. <b>Staminate</b> heads: peduncles 0.5–1.5 mm; involucres shallowly cup-shaped (usually without black nerves), 2–3+ mm diam., glabrous or hispid to pilosulous; florets 12–20+. <b>Burs</b>: bodies ± globose to pyriform, 2–3 mm, ± pilosulous, spines or tubercles 3–5+, near middles or distal, ± conic to acerose, 0.1–0.5+ mm, tips straight. <b>2n</b> = 34, 36.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jul–Oct.
|habitat=Wet to dry soils, disturbed sites
|elevation=0–1000+ m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.
|discussion=<p>Hybrids between <i>Ambrosia artemisiifolia</i> and <i>A. psilostachya</i> have been called A. ×intergradiens W. H. Wagner. The name <i>Ambrosia</i> ×helenae Rouleau applies to hybrids between <i>A. artemisiifolia</i> and <i>A. trifida</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Ambrosia artemisiifolia
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Ambrosia artemisiifolia var. elatior;Ambrosia artemisiifolia var. paniculata;Ambrosia elatior;Ambrosia glandulosa;Ambrosia monophylla
|basionyms=
|family=Asteraceae
|phenology=Flowering Jul–Oct.
|habitat=Wet to dry soils, disturbed sites
|elevation=0–1000+ m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_16.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae
|genus=Ambrosia
|species=Ambrosia artemisiifolia
}}<!--

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