View source for Bidens trichosperma

{{Treatment/ID
|accepted_name=Bidens trichosperma
|accepted_authority=(Michaux) Britton
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=20: 281. 1893
|year=1893
}}
|basionyms={{Treatment/ID/Basionym
|name=Coreopsis trichosperma
|authority=Michaux
|rank=species
|publication_title=Fl. Bor.-Amer.
|publication_place=2: 139. 1803
}}
|synonyms={{Treatment/ID/Synonym
|name=Bidens coronata var. brachyodonta
|authority=Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens coronata var. tenuiloba
|authority=(A. Gray) Sherff
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens coronata var. trichosperma
|authority=(Michaux) Fernald
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Bidens;Bidens trichosperma
|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 trichosperma]]</div></div>
|volume=Volume 21
|mention_page=page 207
|treatment_page=page 213
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>(biennials), (15–)30–50(–150+) cm. <b>Leaves</b>: petioles 5–20+ mm; blades ± deltate to ovate overall, 40–75(–150) × 10–45(–130) mm, usually laciniately 1–2-pinnatisect, ultimate lobes (3–)5–7+, oblanceolate or lanceolate to linear, (5–)10–30(–80+) × (1–)4–8(–12+) mm, bases cuneate, ultimate margins incised, dentate, serrate, or entire, little, if at all, ciliate, apices acute to attenuate, faces glabrous or ± hirtellous to strigillose. <b>Heads</b> usually in open, ± corymbiform arrays. <b>Peduncles</b> 20–150 mm. <b>Calyculi</b> of (6–)8(–11), ascending to spreading, spatulate to linear, sometimes ± foliaceous bractlets or bracts 3–10(–18) mm, margins sometimes ciliate, abaxial faces glabrous. <b>Involucres</b> hemispheric or broader, 4–6(–8) × 6–12 mm. <b>Phyllaries</b> 6–8(–10), oblong, 3–8 mm. <b>Ray</b> florets (7–)8–9; laminae golden yellow, 10–30 mm. <b>Disc</b> florets 40–60(–80+); corollas yellow, 3–5 mm. <b>Cypselae</b> blackish or brown, flattened, narrowly cuneate, outer 3–6 mm, inner 5–9 mm (lengths mostly 2.5–4 times widths), margins antrorsely barbed or ciliate, apices ± truncate, faces obscurely 1-nerved, sometimes tuberculate, glabrous or sparsely hispidulous; pappi of 2 erect, ± patently barbed awns or scales (0.4–)1–2.5(–4) mm. <b>2n</b> = 24.</span><!--

-->{{Treatment/Body
|phenology=Flowering Aug–Oct.
|habitat=Marshes, estuaries
|elevation=0–300 m
|distribution=Ont.;Que.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Ky.;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Va.;W.Va.;Wis.
|discussion=<p>Plants here called <i>Bidens trichosperma</i> have long been known as B. coronata (Linnaeus) Britton (or Britton ex Sherff). Alas, Britton’s B. coronata (1913) is a later homonym of B. coronata Fischer ex Colla (1834) and cannot be used.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Bidens trichosperma
|authority=(Michaux) Britton
|rank=species
|parent rank=genus
|synonyms=Bidens coronata var. brachyodonta;Bidens coronata var. tenuiloba;Bidens coronata var. trichosperma
|basionyms=Coreopsis trichosperma
|family=Asteraceae
|phenology=Flowering Aug–Oct.
|habitat=Marshes, estuaries
|elevation=0–300 m
|distribution=Ont.;Que.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Ky.;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Va.;W.Va.;Wis.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1893
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V21_518.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae
|genus=Bidens
|species=Bidens trichosperma
}}<!--

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