View source for Aster

{{Treatment/ID
|accepted_name=Aster
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 872. 1753
|year=1753
}}, {{Treatment/Publication
|title=Gen. Pl. ed.
|place=5, 373. 1754
|year=1754
}}
|common_names=Aster
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Asteromoea
|authority=Blume
|rank=genus
}} {{Treatment/ID/Synonym
|name=Diplactis
|authority=Rafinesque
|rank=genus
}} {{Treatment/ID/Synonym
|name=Heteropappus
|authority=Lessing
|rank=genus
}} {{Treatment/ID/Synonym
|name=Kalimeris
|authority=Cassini
|rank=genus
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Aster
|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>[[Aster]]</div></div>
|etymology=Latin aster, star, alluding to heads as seen from above
|volume=Volume 20
|mention_page=page 3, 17, 23, 39, 43, 78, 82, 83, 101, 102
|treatment_page=page 20
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism some measurement;whole-organism duration"><b>Perennials </b>[subshrubs, shrubs], 3–300 cm (rhizomatous, rhizomes long or short, plants sometimes with branched caudices).</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem architecture;stem pubescence;stem pubescence"><b>Stems </b>ascending to erect, simple, ± densely hairy [glabrous], sometimes stipitate-glandular.</span> <span class="statement" id="st-d0_s2" data-properties=""><b>Leaves </b>basal and/or cauline;</span> <span class="statement" id="st-d0_s3" data-properties="leaf position;leaf position;leaf architecture;leaf architecture">sessile or petiolate;</span> <span class="statement" id="st-d0_s4" data-properties="blade architecture;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;distal blade size;margin architecture or shape;margin architecture or shape;face pubescence">blades 1-nerved, spatulate, obovate (mainly basal), oblanceolate, lance-oblong, lanceolate, or linear, distal often reduced, margins entire or serrate [lobed], faces hairy.</span> <span class="statement" id="st-d0_s5" data-properties="head architecture or arrangement;head arrangement;head arrangement;array architecture"><b>Heads </b>radiate, borne singly or in corymbiform [paniculiform] arrays.</span> <span class="statement" id="st-d0_s6" data-properties="involucre shape;involucre shape;involucre diameter"><b>Involucres </b>broadly campanulate or hemispheric [cylindro-campanulate], 15–25 mm diam.</span> <span class="statement" id="st-d0_s7" data-properties="phyllarie duration;phyllarie quantity;phyllarie architecture;phyllarie shape;phyllarie size;series quantity;base texture;base growth form or texture;zone coloration;margin texture;margin coloration;margin pubescence;margin pubescence;margin pubescence;margin pubescence;margin pubescence;margin pubescence"><b>Phyllaries </b>persistent, 25–50 in 2–4 series, 1-nerved (flat), ovate to lanceolate, unequal to subequal, bases ± scarious, herbaceous distally or not, green zones along midnerves, margins scarious to hyaline, densely villous, strigillose, or glabrous, sometimes ± short-stipitate-glandular.</span> <span class="statement" id="st-d0_s8" data-properties="receptacle shape;receptacle shape;receptacle relief;receptacle architecture"><b>Receptacles </b>flat or convex, pitted, epaleate.</span> <span class="statement" id="st-d0_s9" data-properties="ray-floret atypical quantity;ray-floret quantity;ray-floret architecture;ray-floret reproduction;series quantity"><b>Ray-</b>florets 14–55 (–100) [–150] in 1 series, pistillate, fertile;</span> <span class="statement" id="st-d0_s10" data-properties="corolla coloration;corolla coloration;corolla coloration;corolla coloration;corolla coloration;corolla coloration;corolla coloration">corollas white, pink, purple, blue, or violet.</span> <span class="statement" id="st-d0_s11" data-properties="disc-floret quantity;disc-floret reproduction;disc-floret reproduction"><b>Disc-</b>florets 20–100+, bisexual, fertile;</span> <span class="statement" id="st-d0_s12" data-properties="corolla coloration;corolla size;tube height or length or size;throat variability;throat shape;lobe quantity;lobe orientation;lobe orientation;lobe shape">corollas usually yellow (sometimes reddening), slightly ampliate [tubular], tubes shorter than to equaling funnelform or campanulate throats, lobes 5, usually erect to spreading, rarely reflexed, lanceolate;</span> <span class="statement" id="st-d0_s13" data-properties="style-branch appendage shape">style-branch appendages lanceolate.</span> <span class="statement" id="st-d0_s14" data-properties="cypsela shape;cypsela shape;cypsela quantity;face pubescence;face pubescence"><b>Cypselae </b>obconic, compressed, 2 marginal ribs, faces ± densely strigillose [glabrous], sometimes short-stipitate-glandular;</span> <span class="statement" id="st-d0_s15" data-properties="pappus duration;pappus quantity;pappus coloration;pappus variability;pappus architecture;pappus shape;series quantity">pappi persistent, of 20–30 white to tawny, ± equal, barbellate, apically usually attenuate, sometimes ± clavate bristles in 1–2 series.</span> <span class="statement" id="st-d0_s16" data-properties="bristle shape;x chromosome quantity">x = 9.</span><!--

-->{{Treatment/Body
|distribution=North America;Eurasia
|discussion=<p>Species ca. 180 (2 in the flora).</p><!--
--><p>Some species of Aster are cultivated and sold in the horticultural trade (J. C. Semple et al. 2002). Some species, notably the type of the genus, Aster amellus Linnaeus, have a large number of cultivars. The genus name is the type of the family name Asteraceae. As circumscribed here, Aster excludes members of the Crinitaria-Galatella-Tripolium complex, which are closer to the Bellidinae (Bellis, Bellium, Bellidiastrum; O. Fiz et al. 2002). Analysis of molecular data shows that Aster in the strict sense includes Diplactis, Kalimeris, Heteropappus, and a few other eastern Asiatic segregates. The relationship of Aster in the strict sense to other Astereae genera is unclear, and the delimitation of subtribe Asterinae in the sense of G. L. Nesom (1994b) is still uncertain.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Plants scapiform, to 30 cm; basal leaf blades oblanceolate to spatulate, 10–112 mm, cauline blades lanceolate to linear-lanceolate, 7–43(–50) mm, margins entire; heads borne singly; phyllaries lanceolate to lance-oblong, subequal; rays pink, white, or lavender (arctic-alpine)
|[[Aster alpinus|Aster alpinus]]
|-id=key-0-1
|1
|Plants leafy-stemmed, to 150(–300) cm; basal leaf blades oblanceolate, 300–500 mm, cauline blades oblanceolate to lanceolate, 40–180 mm, margins coarsely serrate or entire; heads borne in corymbiform arrays; phyllaries ovate to linear-lanceolate, unequal; rays pale lavender or purple (escaped from cultivation)
|[[Aster tataricus|Aster tataricus]]
|}
</div></div><!--

-->{{#Taxon:
name=Aster
|author=Luc Brouillet
|authority=Linnaeus
|rank=genus
|parent rank=tribe
|synonyms=Asteromoea;Diplactis;Heteropappus;Kalimeris
|basionyms=
|family=Asteraceae
|illustrator=Yevonn Wilson-Ramsey
|illustration copyright=Flora of North America Association
|distribution=North America;Eurasia
|reference=None
|publication title=Sp. Pl.;Gen. Pl. ed.
|publication year=1753;1754
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20_2.xml
|tribe=Asteraceae tribe Astereae
|genus=Aster
|array architecture=corymbiform
|base growth form or texture=herbaceous
|base texture=scarious
|blade architecture=1-nerved
|blade shape=linear;lanceolate;linear;lanceolate;lance-oblong;oblanceolate;obovate;spatulate
|bristle shape=clavate
|corolla coloration=yellow;violet;blue;violet;blue;purple;pink;white
|corolla size=ampliate
|cypsela quantity=2
|cypsela shape=compressed;obconic
|disc-floret quantity=20;100
|disc-floret reproduction=fertile;bisexual
|distal blade size=reduced
|face pubescence=short-stipitate-glandular;strigillose;hairy
|head architecture or arrangement=radiate
|head arrangement=in corymbiform arrays;singly
|involucre diameter=15mm;25mm
|involucre shape=hemispheric;campanulate
|leaf architecture=petiolate;sessile
|leaf position=cauline;basal
|lobe orientation=reflexed;usually erect;spreading
|lobe quantity=5
|lobe shape=lanceolate
|margin architecture or shape=serrate;entire
|margin coloration=hyaline
|margin pubescence=short-stipitate-glandular;glabrous;strigillose;glabrous;strigillose;villous
|margin texture=scarious
|pappus architecture=barbellate
|pappus coloration=white;tawny
|pappus duration=persistent
|pappus quantity=20;30
|pappus shape=attenuate
|pappus variability=equal
|phyllarie architecture=1-nerved
|phyllarie duration=persistent
|phyllarie quantity=25;50
|phyllarie shape=ovate;lanceolate
|phyllarie size=unequal;subequal
|ray-floret architecture=pistillate
|ray-floret atypical quantity=55;100
|ray-floret quantity=14;55
|ray-floret reproduction=fertile
|receptacle architecture=epaleate
|receptacle relief=pitted
|receptacle shape=convex;flat
|series quantity=1;2
|stem architecture=simple
|stem orientation=ascending;erect
|stem pubescence=stipitate-glandular;hairy
|style-branch appendage shape=lanceolate
|throat shape=campanulate
|throat variability=equaling
|tube height or length or size=shorter
|whole-organism duration=perennial
|whole-organism some measurement=3cm;300cm
|x chromosome quantity=9
|zone coloration=green
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae tribe Astereae]]