View source for Bidens tripartita

{{Treatment/ID
|accepted_name=Bidens tripartita
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 831. 1753
|year=1753
}}
|common_names=Bident à trois divisions
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Bidens comosa
|authority=(A. Gray) Wiegand
}}
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Bidens;Bidens tripartita
|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 Coreopsidinae]]</div><div class="higher-taxon"><small>genus</small>[[Bidens]]</div><div class="higher-taxon"><small>species</small>[[Bidens tripartita]]</div></div>
|volume=Volume 21
|mention_page=page 208, 218
|treatment_page=page 217
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> (5–)20–70(–200) cm. <b>Leaves</b> sessile or petioles 5–15(–35+) mm (± winged); blades ± elliptic to ovate or lanceolate, 40–80(–150+) × 15–40(–60+) mm, sometimes laciniately 1-pinnatisect with 1–4+ lobes near bases, bases cuneate, margins entire or dentate to serrate, usually ciliate, apices acute to acuminate, faces glabrous or hirtellous. <b>Heads</b> borne singly or in 2s or 3s. <b>Peduncles</b> 10–40(–80) mm. <b>Calyculi</b> of (2–)6–7(–10) ± spreading, oblanceolate or lanceolate to linear, ± foliaceous bractlets or bracts 7–35(–60) mm, margins (entire or serrate) sometimes sparsely ciliate, abaxial faces hispidulous near bases, distally glabrous. <b>Involucres</b> campanulate to hemispheric or broader, (4–)5–7(–12) × (3–)6–12(–15+) mm. <b>Phyllaries</b> (6–)7–8(–13), elliptic-ovate to lance-ovate, (4–)6–9(–12) mm. <b>Ray</b> florets usually 0, sometimes 1–5; laminae orange yellowish, 4–8 mm. <b>Disc</b> florets (5–)20–60(–150+); corollas pale yellow to orange, (2–)3–4 mm (gradually ampliate, anthers usually pale). <b>Cypselae</b> blackish to purplish or brown, ± flattened, sometimes weakly 3(–4)-angled, usually cuneate to linear, outer (3–)6–7(–10) mm, inner (4–)6–9(–11) mm, margins proximally antrorsely to patently, distally retrorsely, barbed, apices ± truncate to concave, faces ± 1-nerved, usually smooth, seldom notably tuberculate, glabrous or sparsely strigillose; pappi 0, or of (1–)3–3(–4+) ± erect to spreading, retrorsely barbed awns (0.2–)2–3(–6) mm. <b>2n</b> = 48.</span><!--

-->{{Treatment/Body
|phenology=Flowering Aug–Oct.
|habitat=Marshes and other wet sites
|elevation=10–1700 m
|distribution=Alta.;B.C.;Man.;Que.;Ala.;Alaska;Calif.;Colo.;Conn.;Del.;D.C.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;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.;Europe;Asia;n Africa;introduced in Pacific Islands;Australia.
|discussion=<p>Plants with cypsela mid-nerves strongly developed (cypselae more or less strongly 4-angled and, often, tuberculate) that are treated below as <i>Bidens connata</i> have been included in <i>B. tripartita</i>, perhaps rightly so. And some botanists have included (or advocated inclusion of) <i>B. eatonii</i>, <i>B. heterodoxa</i>, and/or B. infirma in <i>B. tripartita</i>, as well, perhaps rightly so.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Bidens tripartita
|author=
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Bidens comosa
|basionyms=
|family=Asteraceae
|phenology=Flowering Aug–Oct.
|habitat=Marshes and other wet sites
|elevation=10–1700 m
|distribution=Alta.;B.C.;Man.;Que.;Ala.;Alaska;Calif.;Colo.;Conn.;Del.;D.C.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;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.;Europe;Asia;n Africa;introduced in Pacific Islands;Australia.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_527.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae
|genus=Bidens
|species=Bidens tripartita
}}<!--

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