Difference between revisions of "Symphyotrichum subg. Astropolium"
in J. C. Semple et al., Cult. Native Asters Ontario, 133. 2002.
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|accepted_name=Symphyotrichum subg. Astropolium | |accepted_name=Symphyotrichum subg. Astropolium | ||
| − | |accepted_authority=(Nuttall) Semple | + | |accepted_authority=(Nuttall) Semple |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in J. C. Semple et al., Cult. Native Asters Ontario, | |title=in J. C. Semple et al., Cult. Native Asters Ontario, | ||
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name=Symphyotrichum subg. Astropolium | name=Symphyotrichum subg. Astropolium | ||
| − | |authority=(Nuttall) Semple | + | |authority=(Nuttall) Semple |
|rank=subgenus | |rank=subgenus | ||
|parent rank=genus | |parent rank=genus | ||
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|publication year=2002 | |publication year=2002 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_1076.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Symphyotrichum | |genus=Symphyotrichum | ||
Latest revision as of 19:58, 5 November 2020
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).