View source for Symphyotrichum subg. Astropolium

{{Treatment/ID
|accepted_name=Symphyotrichum subg. Astropolium
|accepted_authority=(Nuttall) Semple in J. C. Semple et al.
|publications={{Treatment/Publication
|title=in J. C. Semple et al., Cult. Native Asters Ontario,
|place=133. 2002
|year=2002
}}
|basionyms={{Treatment/ID/Basionym
|name=Tripolium subg. Astropolium
|authority=Nuttall
|publication_title=Trans. Amer. Philos. Soc., n. s.
|publication_place=7: 295. 1840
}}
|synonyms={{Treatment/ID/Synonym
|name=Aster sect. Hesterastrum
|authority=Bentham
}} {{Treatment/ID/Synonym
|name=Aster sect. Oxytripolium
|authority=(de Candolle) Torrey & A. Gray
}} {{Treatment/ID/Synonym
|name=Undefined subg. Conyzanthus
|authority=Tamamschjan
}} {{Treatment/ID/Synonym
|name=Symphyotrichum sect. Oxytripolium
|authority=(de Candolle) G. L. Nesom
}} {{Treatment/ID/Synonym
|name=Tripolium sect. Oxytripolium
|authority=de Candolle
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Symphyotrichum;Symphyotrichum subg. Astropolium
|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. Astropolium]]</div></div>
|volume=Volume 20
|mention_page=page 461, 466
|treatment_page=page 479
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or perennials eglandular; taprooted or rhizomatous. <b>Stems</b> not brittle at maturity, glabrous or glabrate, sometimes sparsely hairy in leaf axils. <b>Leaves</b>: basal withering by flowering, petiolate, blades 1-nerved, spatulate to ovate or obovate, margins entire or shallowly serrate or crenate; cauline subpetiolate or sessile, blades narrowly lanceolate, linear, or subulate, bases attenuate, slightly sheathing, or ± clasping. <b>Heads</b> radiate. <b>Phyllaries</b> unequal (bases indurate), green zones narrowly lanceolate, spatulate to oblanceolate-rhombic, or rhombic (faces glabrous or sparsely hairy). <b>Ray</b> florets 10–30(–54) in 1 series; laminae (1.3–)5–8.5(–9.5) × (0.2–)1.2–2 mm. <b>Disc</b> corollas sometimes weakly ampliate, throats funnelform, lobes ± erect or ± spreading. <b>Cypselae</b> narrowly obovoid to fusiform, sometimes ± compressed, 5–6-nerved, sparsely strigillose or glabrate. <b>x</b> = 5.</span><!--

-->{{Treatment/Body
|distribution=North America;introduced worldwide.
|discussion=<p>Species ca. 10 (3 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=sundberg1986a
|text=Sundberg, S. D. 1986. The Systematics of Aster Subgenus Oxytripolium (Compositae) and Historically Allied Species. Ph.D. dissertation. University of Texas.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Symphyotrichum subg. Astropolium
|author=
|authority=(Nuttall) Semple in J. C. Semple et al.
|rank=subgenus
|parent rank=genus
|synonyms=Aster sect. Hesterastrum;Aster sect. Oxytripolium;Undefined subg. Conyzanthus;Symphyotrichum sect. Oxytripolium;Tripolium sect. Oxytripolium
|basionyms=Tripolium subg. Astropolium
|family=Asteraceae
|distribution=North America;introduced worldwide.
|reference=sundberg1986a
|publication title=in J. C. Semple et al., Cult. Native Asters Ontario,
|publication year=2002
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V20_1076.xml
|tribe=Asteraceae tribe Astereae
|genus=Symphyotrichum
|subgenus=Symphyotrichum subg. Astropolium
}}<!--

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