View source for Symphyotrichum boreale

{{Treatment/ID
|accepted_name=Symphyotrichum boreale
|accepted_authority=(Torrey & A. Gray) Á. Löve & D. Löve
|publications={{Treatment/Publication
|title=Taxon
|place=31: 358. 1982
|year=1982
}}
|common_names=Rush or slender white or northern bog aster;aster boréal
|basionyms={{Treatment/ID/Basionym
|name=Aster laxifolius var. borealis
|authority=Torrey & A. Gray
|publication_title=Fl. N. Amer.
|publication_place=2: 138. 1841
}}
|synonyms={{Treatment/ID/Synonym
|name=Aster borealis
|authority=(Torrey & A. Gray) Provancher
}} {{Treatment/ID/Synonym
|name=Aster franklinianus
|authority=Rydberg
}} {{Treatment/ID/Synonym
|name=Aster junciformis
|authority=Rydberg
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Symphyotrichum;Symphyotrichum subg. Symphyotrichum;Symphyotrichum sect. Symphyotrichum;Symphyotrichum boreale
|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 boreale]]</div></div>
|volume=Volume 20
|mention_page=page 468, 477, 501, 514, 521, 52
|treatment_page=page 522
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials </b>(5.5–)13–85 cm, colonial; slender (0.6–2.8 mm diam.), long-rhizomatous (rhizomes of season shallow- or deep-seated, not producing rosettes near parent stems). <b>Stems</b> 1–3+, erect (straight, slender, often reddish to slightly glaucous proximally), glabrous. <b>Leaves</b> stiff, margins entire to sparsely subserrulate, revolute, scabrellous, apices mucronulate, sometimes with callous point, faces glabrous, abaxial midveins sometimes sparsely strigillose; basal withering by flowering, subpetiolate to petiolate, petioles winged, base dilated, sheathing, eciliate, blades linear-oblanceolate to ovate or suborbiculate, 20–150 × 5–60 mm, bases attenuate, margins shallowly serrate or entire, apices obtuse to rounded; proximal cauline withering by flowering, sessile or subpetiolate, petioles widely winged, bases strongly clasping, blades linear-lanceolate to linear, 15–90 × 2–12 mm, bases attenuate to cuneate or subauriculate, ± clasping, apices obtuse to acute; distal sessile, blades linear-lanceolate (sometimes lanceolate) to linear, (40–)60–150 × 2–6(–8) mm, ± reduced distally, bases subauriculate, subclasping, margins entire or sometimes remotely serrulate, apices acute. <b>Heads</b> borne singly or in open, often lax, racemiform or paniculiform arrays, branches ascending, sparsely leafy. <b>Peduncles</b> 0.5–5 cm, glabrous, bracts 1–3, remote, linear-lanceolate to linear, reduced distally, not grading into phyllaries (sometimes subtending heads). <b>Involucres</b> cylindro-campanulate, (4–)5–8 mm. <b>Phyllaries</b> in 4–5 series, usually appressed, rarely outer recurved, lanceolate or oblong-lanceolate (outer) to linear (innermost) ± unequal to sometimes subequal, bases indurate 1/3–1/2 (sometimes not indurate), margins scarious, erose, hyaline or tinged with reddish purple, sparsely ciliolate, green zones lanceolate to linear-lanceolate, apices acute to acuminate, mucronate to apiculate, often purple or reddish purple (particularly inner), faces glabrous. <b>Ray</b> florets (15–)25–35(–41); corollas white to often pale rose, pale purple or lavender, laminae (7–)10–15(–20) × 1.1–1.5 mm. <b>Disc</b> florets (15–)25–30(–40); corollas cream or pale yellow becoming pink or brown purple, 3.7–6.6 mm, tubes shorter than funnelform throats, lobes triangular, 0.5–1 mm. <b>Cypselae</b> yellowish tan or purple to brownish with purple streaks or grayish tan (nerves stramineous), obovoid, ± compressed, 0.6–2 mm, 3–5-nerved, faces sparsely strigillose; pappi white, 2.7–6.4 mm. <b>2n</b> = 16, 32, 48, 64.</span><!--

-->{{Treatment/Body
|phenology=Flowering Aug–Oct.
|habitat=Mostly calcareous areas, fens, marshes, bogs, open cedar-tamarack-spruce swamps, stream and pond margins, wet meadows, swales
|elevation=0–1500+ m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Idaho;Ill.;Ind.;Iowa;Mass.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.Dak.;Ohio;Pa.;S.Dak.;Vt.;Wash.;W.Va.;Wis.;Wyo.
|discussion=<p>Some of the western populations originally determined as <i>Symphyotrichum boreale</i> in western Wyoming and adjacent Montana are referable to <i>S. welshii</i>. Those of eastern Wyoming, Colorado, and the Black Hills are <i>S. boreale</i>. There is a gap between the ranges of the two species in Wyoming where neither occurs. <i>Symphyotrichum</i> ×longulum (E. Sheldon) G. L. Nesom (syn. <i>Aster</i> longulus E. Sheldon), reported from Minnesota, is the hybrid between <i>S. boreale</i> and <i>S. puniceum </i>var.<i> puniceum</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Symphyotrichum boreale
|author=
|authority=(Torrey & A. Gray) Á. Löve & D. Löve
|rank=species
|parent rank=section
|synonyms=Aster borealis;Aster franklinianus;Aster junciformis
|basionyms=Aster laxifolius var. borealis
|family=Asteraceae
|phenology=Flowering Aug–Oct.
|habitat=Mostly calcareous areas, fens, marshes, bogs, open cedar-tamarack-spruce swamps, stream and pond margins, wet meadows, swales
|elevation=0–1500+ m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Idaho;Ill.;Ind.;Iowa;Mass.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.Dak.;Ohio;Pa.;S.Dak.;Vt.;Wash.;W.Va.;Wis.;Wyo.
|reference=None
|publication title=Taxon
|publication year=1982
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V20_1162.xml
|tribe=Asteraceae tribe Astereae
|genus=Symphyotrichum
|subgenus=Symphyotrichum subg. Symphyotrichum
|section=Symphyotrichum sect. Symphyotrichum
|species=Symphyotrichum boreale
}}<!--

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