View source for Symphyotrichum anticostense

{{Treatment/ID
|accepted_name=Symphyotrichum anticostense
|accepted_authority=(Fernald) G. L. Nesom
|publications={{Treatment/Publication
|title=Phytologia
|place=77: 275. 1995
|year=1995
}}
|common_names=Anticosti aster;aster d’Anticosti
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms={{Treatment/ID/Basionym
|name=Aster anticostensis
|authority=Fernald
|rank=species
|publication_title=Rhodora
|publication_place=17: 16. 1915
}}
|synonyms={{Treatment/ID/Synonym
|name=Aster gaspensis
|authority=Victorin
|rank=species
}} {{Treatment/ID/Synonym
|name=Aster hesperius var. gaspensis
|authority=(Victorin) B. Boivin
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Symphyotrichum;Symphyotrichum subg. Symphyotrichum;Symphyotrichum sect. Symphyotrichum;Symphyotrichum anticostense
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Astereae]]</div><div class="higher-taxon"><small>genus</small>[[Symphyotrichum]]</div><div class="higher-taxon"><small>subgenus</small>[[Symphyotrichum subg. Symphyotrichum]]</div><div class="higher-taxon"><small>section</small>[[Symphyotrichum sect. Symphyotrichum]]</div><div class="higher-taxon"><small>species</small>[[Symphyotrichum anticostense]]</div></div>
|volume=Volume 20
|mention_page=page 478, 501, 530
|treatment_page=page 529
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 10–90 cm, colonial; long-rhizomatous. <b>Stems</b> 1, erect (straight, often reddish), glabrous. <b>Leaves</b> coriaceous, margins remotely serrulate or entire, slightly revolute, scabrous, apices mucronulate, faces glabrous; basal withering by flowering, long-petiolate (petioles narrowly winged, bases sheathing), blades lanceolate to oblanceolate, ca. 55+ × 3+ mm, bases slightly attenuate, apices acute; proximal cauline mostly withering by flowering, petiolate (petioles narrowly winged, sheathing), blades lanceolate or oblanceolate to linear-lanceolate or -oblanceolate, arcuate, 90–160 × 5–18 mm, bases cuneate to slightly attenuate, margins entire or serrulate, apices acute; distal sessile, blades linear to linear-lanceolate, 8–50 × 1.5–5 mm, progressively reduced distally, more strongly so in arrays, bases cuneate to rounded, sometimes slightly clasping, apices acute to acuminate. <b>Heads</b> in elongate, loosely racemiform arrays, branches ascending, heads single at ends of primary branches or long pedicels. <b>Peduncles</b> 0.8–5.7 cm, slender, sparsely ot moderately pilosulous, bracts 3–5, linear-lanceolate, often crowded proximal to and surpassing heads. <b>Involucres</b> campanulate, 6–10 mm. <b>Phyllaries</b> in 2–3 series, oblong-oblanceolate or -spatulate (outer) or oblong-lanceolate to linear-lanceolate or linear (inner), ± unequal, bases indurate 1/3–3/4, margins hyaline, scarious, erose distally, sparsely ciliolate distally, green zones lanceolate, outer often foliaceous distally, apices acute to long-acuminate, ± spreading, faces glabrous. <b>Ray</b> florets 25–44; corollas usually pale purple or lilac, sometimes white, laminae 9.5–20 × 0.7–1.4 mm. <b>Disc</b> florets 29–52; corollas yellow becoming reddish purple, 5–6 mm, tubes slightly shorter than funnelform throats, lobes lanceolate, 0.6–0.7 mm. <b>Cypselae</b> reddish tan, obovoid, compressed, 1.5–2.8 mm, 4–5-nerved, faces strigillose; pappi yellowish, 7–8 mm. <b>2n</b> = 80.</span><!--

-->{{Treatment/Body
|phenology=Flowering Aug–Sep.
|habitat=Calcareous, gravelly shores of rivers, lakeshore limestone pavements
|elevation=0–100 m
|distribution=N.B.;Que.;Maine.
|discussion=<p>Of conservation concern.</p><!--
--><p><i>Symphyotrichum anticostense</i> is known from disjunct areas: western Lake St. John, southern Anticosti Island, southern streams of the Gaspé Peninsula (Quebec), Restigouche River (Quebec–New Brunswick), and St. John (New Brunswick) and Aroostook (Maine; A. Haines 2000) rivers. It is an allopolyploid derivative of the cross between the calcareous fen species <i>S. boreale</i> and the widespread shore species <i>S. novi-belgii</i> (J. Labrecque and L. Brouillet 1990). It hybridizes with <i>S. novi-belgii</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Symphyotrichum anticostense
|authority=(Fernald) G. L. Nesom
|rank=species
|parent rank=section
|synonyms=Aster gaspensis;Aster hesperius var. gaspensis
|basionyms=Aster anticostensis
|family=Asteraceae
|phenology=Flowering Aug–Sep.
|habitat=Calcareous, gravelly shores of rivers, lakeshore limestone pavements
|elevation=0–100 m
|distribution=N.B.;Que.;Maine.
|reference=None
|publication title=Phytologia
|publication year=1995
|special status=Endemic;Conservation concern
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_1177.xml
|tribe=Asteraceae tribe Astereae
|genus=Symphyotrichum
|subgenus=Symphyotrichum subg. Symphyotrichum
|section=Symphyotrichum sect. Symphyotrichum
|species=Symphyotrichum anticostense
}}<!--

-->[[Category:Treatment]][[Category:Symphyotrichum sect. Symphyotrichum]]