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-undefined" data-properties=""><b>Perennials </b>[subshrubs, shrubs], 3–300 cm (rhizomatous, rhizomes long or short, plants sometimes with branched caudices). <b>Stems</b> ascending to erect, simple, ± densely hairy [glabrous], sometimes stipitate-glandular. <b>Leaves</b> basal and/or cauline; sessile or petiolate; blades 1-nerved, spatulate, obovate (mainly basal), oblanceolate, lance-oblong, lanceolate, or linear, distal often reduced, margins entire or serrate [lobed], faces hairy. <b>Heads</b> radiate, borne singly or in corymbiform [paniculiform] arrays. <b>Involucres</b> broadly campanulate or hemispheric [cylindro-campanulate], 15–25 mm diam. <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. <b>Receptacles</b> flat or convex, pitted, epaleate. <b>Ray</b> florets 14–55(–100)[–150] in 1 series, pistillate, fertile; corollas white, pink, purple, blue, or violet. <b>Disc</b> florets 20–100+, bisexual, fertile; 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; style-branch appendages lanceolate. <b>Cypselae</b> obconic, compressed, 2 marginal ribs, faces ± densely strigillose [glabrous], sometimes short-stipitate-glandular; pappi persistent, of 20–30 white to tawny, ± equal, barbellate, apically usually attenuate, sometimes ± clavate bristles in 1–2 series. <b>x</b> = 9.</span><!--

-->{{Treatment/Body
|distribution=North America;Eurasia.
|discussion=<p>Species ca. 180 (2 in the flora).</p><!--
--><p>Some species of <i>Aster</i> are cultivated and sold in the horticultural trade (J. C. Semple et al. 2002). Some species, notably the type of the genus, <i>Aster</i> amellus Linnaeus, have a large number of cultivars. The genus name is the type of the family name <i>Asteraceae</i>. As circumscribed here, <i>Aster</i> excludes members of the Crinitaria-Galatella-Tripolium complex, which are closer to the Bellidinae (<i>Bellis</i>, Bellium, Bellidiastrum; O. Fiz et al. 2002). Analysis of molecular data shows that <i>Aster</i> in the strict sense includes Diplactis, Kalimeris, Heteropappus, and a few other eastern Asiatic segregates. The relationship of <i>Aster</i> 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://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_2.xml
|tribe=Asteraceae tribe Astereae
|genus=Aster
}}<!--

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