Difference between revisions of "Symphyotrichum subg. Astropolium"
in J. C. Semple et al., Cult. Native Asters Ontario, 133. 2002.
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|name=Aster sect. Hesterastrum | |name=Aster sect. Hesterastrum | ||
|authority=Bentham | |authority=Bentham | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Aster sect. Oxytripolium | |name=Aster sect. Oxytripolium | ||
|authority=(de Candolle) Torrey & A. Gray | |authority=(de Candolle) Torrey & A. Gray | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Undefined subg. Conyzanthus | |name=Undefined subg. Conyzanthus | ||
|authority=Tamamschjan | |authority=Tamamschjan | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Symphyotrichum sect. Oxytripolium | |name=Symphyotrichum sect. Oxytripolium | ||
|authority=(de Candolle) G. L. Nesom | |authority=(de Candolle) G. L. Nesom | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Tripolium sect. Oxytripolium | |name=Tripolium sect. Oxytripolium | ||
|authority=de Candolle | |authority=de Candolle | ||
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|publication year=2002 | |publication year=2002 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V20_1076.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Symphyotrichum | |genus=Symphyotrichum | ||
Revision as of 15:17, 18 September 2019
Annuals or perennials eglandular; taprooted or rhizomatous. Stems not brittle at maturity, glabrous or glabrate, sometimes sparsely hairy in leaf axils. Leaves: 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. Heads radiate. Phyllaries unequal (bases indurate), green zones narrowly lanceolate, spatulate to oblanceolate-rhombic, or rhombic (faces glabrous or sparsely hairy). Ray florets 10–30(–54) in 1 series; laminae (1.3–)5–8.5(–9.5) × (0.2–)1.2–2 mm. Disc corollas sometimes weakly ampliate, throats funnelform, lobes ± erect or ± spreading. Cypselae narrowly obovoid to fusiform, sometimes ± compressed, 5–6-nerved, sparsely strigillose or glabrate. x = 5.
Distribution
North America, introduced worldwide.
Discussion
Species ca. 10 (3 in the flora).