View source for Eurybia sibirica

{{Treatment/ID
|accepted_name=Eurybia sibirica
|accepted_authority=(Linnaeus) G. L. Nesom
|publications={{Treatment/Publication
|title=Phytologia
|place=77: 261. 1995
|year=1995
}}
|common_names=Arctic aster
|basionyms={{Treatment/ID/Basionym
|name=Aster sibiricus
|authority=Linnaeus
|rank=species
|publication_title=Sp. Pl.
|publication_place=2: 872. 1753
}}
|synonyms={{Treatment/ID/Synonym
|name=Aster beringensis
|authority=Gandoger
|rank=species
}} {{Treatment/ID/Synonym
|name=Aster giganteus
|authority=(Hooker) Rydberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Aster montanus
|authority=R. Brown
|rank=species
}} {{Treatment/ID/Synonym
|name=Aster montanus var. giganteus
|authority=(Hooker) Torrey & A. Gray
|rank=variety
}} {{Treatment/ID/Synonym
|name=Aster richardsonii
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Aster richardsonii var. giganteus
|authority=Hooker
|rank=variety
}} {{Treatment/ID/Synonym
|name=Aster sibiricus subsp. richardsonii
|authority=(Sprengel) Á. Löve & D. Löve
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Aster sibiricus var. giganteus
|authority=(Hooker) A. Gray
|rank=variety
}} {{Treatment/ID/Synonym
|name=Eurybia sibirica var. gigantea
|authority=(Hooker) G. L. Nesom
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Eurybia;Eurybia sibirica
|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>[[Eurybia]]</div><div class="higher-taxon"><small>species</small>[[Eurybia sibirica]]</div></div>
|volume=Volume 20
|mention_page=page 368, 371, 459, 485
|treatment_page=page 370
}}<!--

--><span class="statement" id="st-d0_s0" data-properties=""><b>Plants </b>(1–) 5–60 cm;</span> <span class="statement" id="st-d0_s1" data-properties="whole_organism atypical some measurement;whole_organism some measurement;whole_organism growth form;whole_organism arrangement;whole_organism architecture;whole_organism growth form">clonal and clumped, eglandular;</span> <span class="statement" id="st-d0_s2" data-properties="rhizome orientation;rhizome architecture or pubescence;rhizome texture">rhizomes creeping to ascending, scaly, woody with age.</span> <span class="statement" id="st-d0_s3" data-properties="stem quantity;stem orientation;stem growth form or orientation;stem coloration;stem architecture;stem course;stem pubescence;stem pubescence;stem pubescence"><b>Stems </b>1–5+, usually ascending, sometimes decumbent, often purplish, sometimes branched basally, flexuous, proximally sparsely villous, distally usually densely villous, sometimes lanate.</span> <span class="statement" id="st-d0_s4" data-properties="leaf texture;leaf architecture;margin architecture or shape;margin architecture or shape;margin architecture or shape;margin architecture or pubescence or shape;tooth shape;tooth orientation;apex shape;apex shape;abaxial face pubescence;abaxial face relief;abaxial face pubescence;adaxial leaf pubescence"><b>Leaves:</b> cauline (dark green abaxially, paler grayish green adaxially), firm, ± markedly veined, margins coarsely and sometimes irregularly serrate, sometimes (distal) serrulate or entire, villoso-ciliate, teeth mucronate, slightly incurved, apices obtuse to acute, mucronate, abaxial faces glabrescent to scabridulous, sparsely villous along veins, adaxial sparsely to ± densely villous or villoso-strigose;</span> <span class="statement" id="st-d0_s5" data-properties="proximal leaf architecture;petiole base architecture or shape;blade shape;blade shape;blade shape;blade length;blade width;base shape;base architecture">proximal winged-petiolate to sessile, petiole bases sheathing, blades spatulate, obovate to oblanceolate, or ovate (smaller than mid), 9–50 × 3–22 mm, bases attenuate to tapering and (in sessile) subclasping;</span> <span class="statement" id="st-d0_s6" data-properties="mid leaf architecture;blade shape;blade shape;blade shape;blade length;blade width;blade size;base shape">mid short-petiolate to subpetiolate or sessile, blades lanceolate to lanceovate, oblong to oblanceolate, or obovate to spatulate, 25–95 × 6–35 mm, gradually reduced distally, bases rounded or subauriculate to widely attenuate or cuneate;</span> <span class="statement" id="st-d0_s7" data-properties="distal leaf architecture;distal leaf shape;distal leaf shape;distal leaf shape;distal leaf length;distal leaf width;distal leaf size">distal (arrays) sessile, lanceolate, lanceovate, or elliptic to oblanceolate, 8–60 × 1–12 mm, rapidly reduced distally.</span> <span class="statement" id="st-d0_s8" data-properties="head quantity;head arrangement;head arrangement;array architecture;array architecture"><b>Heads </b>1–50, borne singly or in open corymbiform arrays.</span> <span class="statement" id="st-d0_s9" data-properties="peduncle pubescence"><b>Peduncles </b>villous;</span> <span class="statement" id="st-d0_s10" data-properties="bract quantity;bract shape;bract architecture;bract architecture;bract architecture;bract pubescence">bracts 0–3, sometimes immediately subtending heads, lanceolate or spatulate to linear-lanceolate, leaflike or phyllary-like distally (bases indurate, margins purplish), mostly foliaceous, villous.</span> <span class="statement" id="st-d0_s11" data-properties="involucre shape;involucre some measurement;involucre height or length or size"><b>Involucres </b>campanulate, 6–9 mm, shorter than pappi.</span> <span class="statement" id="st-d0_s12" data-properties="phyllarie quantity;phyllarie coloration;phyllarie shape;phyllarie shape;phyllarie size;phyllarie size;phyllarie texture;series atypical quantity;series quantity;base texture;base shape;zone coloration;zone shape;zone shape;margin coloration;margin coloration;margin texture;margin architecture or relief;margin architecture or pubescence or shape;apex orientation;apex shape;apex architecture or shape;face pubescence"><b>Phyllaries </b>30–80 in 3–4 (–5) series, sometimes wholly purplish, usually ± oblong-lanceolate to oblanceolate, sometimes linear-lanceolate (innermost), subequal or ± unequal, membranous, bases indurate, ± rounded, dark green zones lanceolate or truncate at base, in distal 1/3–4/5+ (outer, often foliaceous, sometimes bractlike and surpassing involucres) to 1/4–2/3 (inner), margins hyaline, often purplish, narrowly scarious, erose, densely villoso-ciliate, apices squarrose, acute, apiculate, faces villous.</span> <span class="statement" id="st-d0_s13" data-properties="ray-floret quantity"><b>Ray-</b>florets 12–50;</span> <span class="statement" id="st-d0_s14" data-properties="corolla coloration;corolla length;corolla width">corollas white to pale violet or purple, 7–17.5 × 0.8–1.8 mm.</span> <span class="statement" id="st-d0_s15" data-properties="disc-floret quantity"><b>Disc-</b>florets 25–125;</span> <span class="statement" id="st-d0_s16" data-properties="corolla coloration;corolla some measurement;corolla size;tube length or size;lobe orientation;lobe shape;lobe some measurement">corollas yellow becoming purplish, 5–8.1 mm, slightly ampliate, tubes longer than funnelform throats, lobes erect, triangular, 0.5–1.1 mm.</span> <span class="statement" id="st-d0_s17" data-properties="cypsela coloration;cypsela shape;cypsela shape;cypsela some measurement;rib quantity;face pubescence"><b>Cypselae </b>brown, fusiform, compressed, 2.5–3.7 mm, ribs 7–10 (stramineous), faces strigillose;</span> <span class="statement" id="st-d0_s18" data-properties="bristle pappus some measurement;bristle coloration;bristle coloration">pappi of dark cinnamon or reddish tan (sometimes apically clavellate) bristles 5.5–7.5 mm, ± equaling disc corollas.</span> <span class="statement" id="st-d0_s19" data-properties="disc corolla variability;2n chromosome quantity">2n = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Disturbed, open, gravelly or sandy areas in boreal forest, wet meadows, open aspen and spruce woods, riparian thickets, sandy or gravelly stream flats, stream banks, lakeshores, bluffs, sand dunes, sandy places, subalpine and mountain meadows
|elevation=0–2200 m
|distribution=Alta.;B.C.;N.W.T.;Nunavut;Yukon;Alaska;Idaho;Mont.;n Eurasia
|discussion=<p>Eurybia sibirica is known from the northern Rocky Mountains and the northern Pacific Coast northward, becoming frequent in Alaska, Yukon, and in the boreal forest region of the continental Northwest Territories; it crosses into Siberia to reach Scandinavia (R. Elven 1989). In British Columbia, northern individuals belong to E. sibirica, not E. pygmaea (contra G. W. Douglas et al. 1998–2002, vol. 1), and southern specimens sometimes are E. merita. G. L. Nesom (1994b) recognized three varieties, two of which have been reported from North America (var. sibirica and var. gigantea). At present, however, given the great phenotypic plasticity of this species, it appears preferable not to recognize varieties, pending studies on the validity of these entities. Eurybia sibirica has often been confused at its southern range limit with E. merita, from which it differs by its often more low-cespitose habit (versus more erect habit, but smaller individuals may be similar in this respect), usually more serrate leaves (versus subserrate to nearly entire), and subequal, foliaceous, purplish phyllaries (versus unequal, non-foliaceous, purple-margined). At the southern end of its range, near the Canada–United States border, E. sibirica is usually found at higher elevations than its congener, there at its northern limit. Aster sibiricus forma albinus Lepage is merely a color variant of the species and is not recognized here.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Eurybia sibirica
|authority=(Linnaeus) G. L. Nesom
|rank=species
|parent rank=genus
|synonyms=Aster beringensis;Aster giganteus;Aster montanus;Aster montanus var. giganteus;Aster richardsonii;Aster richardsonii var. giganteus;Aster sibiricus subsp. richardsonii;Aster sibiricus var. giganteus;Eurybia sibirica var. gigantea
|basionyms=Aster sibiricus
|family=Asteraceae
|phenology=Flowering summer.
|habitat=Disturbed, open, gravelly or sandy areas in boreal forest, wet meadows, open aspen and spruce woods, riparian thickets, sandy or gravelly stream flats, stream banks, lakeshores, bluffs, sand dunes, sandy places, subalpine and mountain meadows
|elevation=0–2200 m
|distribution=Alta.;B.C.;N.W.T.;Nunavut;Yukon;Alaska;Idaho;Mont.;n Eurasia
|reference=None
|publication title=Phytologia
|publication year=1995
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20_852.xml
|tribe=Asteraceae tribe Astereae
|genus=Eurybia
|species=Eurybia sibirica
|2n chromosome quantity=18
|abaxial face pubescence=villous;glabrescent
|abaxial face relief=scabridulous
|adaxial leaf pubescence=sparsely;more or less densely villous or villoso-strigose
|apex architecture or shape=apiculate
|apex orientation=squarrose
|apex shape=acute;mucronate;obtuse;acute
|array architecture=corymbiform;open
|base architecture=subclasping
|base shape=rounded;subauriculate;widely attenuate or cuneate
|base texture=indurate
|blade length=25mm;95mm
|blade shape=lanceolate;lanceovate oblong
|blade size=reduced
|blade width=6mm;35mm
|bract architecture=foliaceous;phyllary-like;leaflike
|bract pubescence=villous
|bract quantity=0;3
|bract shape=spatulate;linear-lanceolate
|bristle coloration=reddish tan;dark cinnamon
|bristle pappus some measurement=5.5mm;7.5mm
|corolla coloration=yellow becoming purplish;white;pale violet or purple
|corolla length=7mm;17.5mm
|corolla size=ampliate
|corolla some measurement=5mm;8.1mm
|corolla width=0.8mm;1.8mm
|cypsela coloration=brown
|cypsela shape=compressed;fusiform
|cypsela some measurement=2.5mm;3.7mm
|disc corolla variability=equaling
|disc-floret quantity=25;125
|distal leaf architecture=sessile
|distal leaf length=8mm;60mm
|distal leaf shape=elliptic;oblanceolate
|distal leaf size=reduced
|distal leaf width=1mm;12mm
|face pubescence=strigillose;villous
|head arrangement=in open corymbiform arrays;singly
|head quantity=1;50
|involucre height or length or size=shorter
|involucre shape=campanulate
|involucre some measurement=6mm;9mm
|leaf architecture=veined
|leaf texture=firm
|lobe orientation=erect
|lobe shape=triangular
|lobe some measurement=0.5mm;1.1mm
|margin architecture or pubescence or shape=villoso-ciliate;villoso-ciliate
|margin architecture or relief=erose
|margin architecture or shape=entire;serrulate;serrate
|margin coloration=purplish;hyaline
|margin texture=scarious
|mid leaf architecture=short-petiolate;subpetiolate or sessile
|peduncle pubescence=villous
|petiole base architecture or shape=sheathing
|phyllarie coloration=purplish
|phyllarie quantity=30;80
|phyllarie shape=linear-lanceolate;less oblong-lanceolate;oblanceolate
|phyllarie size=unequal;subequal
|phyllarie texture=membranous
|proximal leaf architecture=winged-petiolate;sessile
|ray-floret quantity=12;50
|rhizome architecture or pubescence=scaly
|rhizome orientation=creeping;ascending
|rhizome texture=woody
|rib quantity=7;10
|series atypical quantity=4;5
|series quantity=3;4
|stem architecture=branched
|stem coloration=purplish
|stem course=flexuous
|stem growth form or orientation=decumbent
|stem orientation=ascending
|stem pubescence=lanate;villous;villous
|stem quantity=1;5
|tooth orientation=incurved
|tooth shape=mucronate
|tube length or size=longer
|whole_organism architecture=eglandular
|whole_organism arrangement=clumped
|whole_organism atypical some measurement=1cm;5cm
|whole_organism growth form=plant;clonal
|whole_organism some measurement=5cm;60cm
|zone coloration=dark green
|zone shape=truncate;lanceolate
}}<!--

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