View source for Bidens eatonii

{{Treatment/ID
|accepted_name=Bidens eatonii
|accepted_authority=Fernald
|publications={{Treatment/Publication
|title=Rhodora
|place=5: 92, plate 45, figs. 11–14. 1903
|year=1903
}}
|common_names=Bident d’Eaton
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Bidens eatonii var. fallax
|authority=Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens eatonii var. illicita
|authority=S. F. Blake
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens eatonii var. interstes
|authority=(Fassett) Fassett
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens eatonii var. kennebecensis
|authority=Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens eatonii var. major
|authority=Fassett
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens eatonii var. mutabilis
|authority=Fassett
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens eatonii var. simulans
|authority=Fassett
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Bidens;Bidens eatonii
|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 eatonii]]</div></div>
|volume=Volume 21
|mention_page=page 208, 217
|treatment_page=page 218
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> (10–)25–70(–150) cm. <b>Leaves</b>: petioles (narrowly, if at all, winged) 10–35+ mm; blades lance-ovate to lanceolate, (20–)35–100+ × 5–25+ mm, sometimes with 1–4 lobes near bases, bases cuneate, margins serrate, seldom ciliate, apices attenuate, faces glabrous. <b>Heads</b> borne singly or in 2s or 3s. <b>Peduncles</b> 10–35+ mm. <b>Calyculi</b> of (2–)3–5 ± erect, oblanceolate to linear, ± foliaceous bractlets or bracts 7–25(–70+) mm, margins sometimes obscurely ciliate, abaxial faces glabrous. <b>Involucres</b> usually cylindric to campanulate, rarely hemispheric, (4–)8–10(–12) × (4–)7–9 mm. <b>Phyllaries</b> 5–6, oblong to lance-ovate, 8–13 mm. <b>Ray</b> florets usually 0, sometimes 1–3+; laminae yellow-orange, 2–5(–10) mm. <b>Disc</b> florets 7–30+; corollas yellowish, 2.5–3.5 mm. <b>Cypselae</b> blackish to purplish or red-brown,± flattened, sometimes 3–4-angled, narrowly oblanceolate, outer 5.5–10 mm, inner 6.5–11 mm, margins barbed or ciliate (proximally antrorsely, distally retrorsely), apices ± truncate, faces ± 1-nerved, glabrous or sparsely setulose, often ± striate and/or tuberculate, pappi of 2–4(–5) erect to spreading, antrorsely or retrorsely barbed awns 3–4.5 mm. <b>2n</b> = 48.</span><!--

-->{{Treatment/Body
|phenology=Flowering Sep–Oct.
|habitat=Borders of estuaries, marshes, tidal flats
|elevation=0–10 m
|distribution=N.B.;P.E.I.;Que.;Conn.;Maine;Mass.;N.J.;N.Y.;R.I.
|discussion=<p><i>Bidens eatonii</i> may be better treated as part of <i>B. tripartita</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Bidens eatonii
|authority=Fernald
|rank=species
|parent rank=genus
|synonyms=Bidens eatonii var. fallax;Bidens eatonii var. illicita;Bidens eatonii var. interstes;Bidens eatonii var. kennebecensis;Bidens eatonii var. major;Bidens eatonii var. mutabilis;Bidens eatonii var. simulans
|basionyms=
|family=Asteraceae
|phenology=Flowering Sep–Oct.
|habitat=Borders of estuaries, marshes, tidal flats
|elevation=0–10 m
|distribution=N.B.;P.E.I.;Que.;Conn.;Maine;Mass.;N.J.;N.Y.;R.I.
|reference=None
|publication title=Rhodora
|publication year=1903
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_529.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae
|genus=Bidens
|species=Bidens eatonii
}}<!--

-->[[Category:Treatment]][[Category:Bidens]]