View source for Bidens hyperborea

{{Treatment/ID
|accepted_name=Bidens hyperborea
|accepted_authority=Greene
|publications={{Treatment/Publication
|title=Pittonia
|place=4: 257. 1901
|year=1901
}}
|common_names=Bident hyperboréal
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Bidens hyperborea var. arcuans
|authority=Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens hyperborea var. cathancensis
|authority=Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens hyperborea var. colpophila
|authority=(Fernald & H. St. John) Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens hyperborea var. gaspensis
|authority=Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Bidens hyperborea var. svensonii
|authority=Fassett
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Bidens;Bidens hyperborea
|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 hyperborea]]</div></div>
|volume=Volume 21
|mention_page=page 208
|treatment_page=page 216
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> (5–)10–30(–70+) cm. <b>Leaves</b> sessile or petioles 5–25 mm (± winged); blades oblanceolate to linear, 15–40(–100+) × (3–)6–10(–15+) mm, bases cuneate, margins entire or ± serrate, sometimes ciliate, apices rounded or obtuse to attenuate, faces glabrous. <b>Heads</b> borne singly or in 2s or 3s. <b>Peduncles</b> 10–60 mm. <b>Calyculi</b> of 2–3(–9) erect, oblanceolate to lance-linear (± foliaceous) bractlets or bracts (6–)10–20(–75+) mm, margins usually ciliolate, abaxial faces glabrous. <b>Involucres</b> usually ± campanulate to cylindric, sometimes ± hemispheric, 5–7(–9) × (4–)7–10 mm. <b>Phyllaries</b> 6–8(–12), oblong, 6–11 mm (tips usually yellow, as are tips of paleae). <b>Ray</b> florets 0 or 3–7; laminae pale yellow, 4–12 mm. <b>Disc</b> florets 15–30(–60); corollas yellow (often orange-tipped), 3–4 mm. <b>Cypselae</b> blackish to olive, flattened, narrowly cuneate, outer 4–9 mm, inner 5–10 mm, margins retrorsely barbed, apices ± truncate to convex, faces ± 1-nerved, ± striate, glabrous; pappi of (2–)3–4 ± erect, retrorsely barbed awns 2–5 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering Aug–Oct.
|habitat=Marshes, borders of estuaries
|elevation=0–10 m
|distribution=N.B.;N.S.;Nunavut;Ont.;Que.;Maine;Mass.;N.H.;N.Y.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Bidens hyperborea
|authority=Greene
|rank=species
|parent rank=genus
|synonyms=Bidens hyperborea var. arcuans;Bidens hyperborea var. cathancensis;Bidens hyperborea var. colpophila;Bidens hyperborea var. gaspensis;Bidens hyperborea var. svensonii
|basionyms=
|family=Asteraceae
|phenology=Flowering Aug–Oct.
|habitat=Marshes, borders of estuaries
|elevation=0–10 m
|distribution=N.B.;N.S.;Nunavut;Ont.;Que.;Maine;Mass.;N.H.;N.Y.
|reference=None
|publication title=Pittonia
|publication year=1901
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V21_524.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae
|genus=Bidens
|species=Bidens hyperborea
}}<!--

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