Difference between revisions of "Symphyotrichum subg. Symphyotrichum"
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| − | --><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or perennials, eglandular; usually rhizomatous, sometimes taprooted. <b>Stems</b> usually not brittle at maturity, usually proximally glabrous or glabrate and distally hairy in lines, sometimes ± uniformly hairy, sometimes glabrous distally. <b>Leaves</b>: basal usually withering by flowering, usually petiolate, sometimes sessile or subsessile, blades 1-nerved, spatulate to oblanceolate, elliptic, or ovate to cordate, margins coarsely serrate to crenate or entire; cauline petiolate or sessile, blades widely ovate to linear, bases cordate or subcordate, rounded, cuneate, or attenuate, sometimes auriculate and ± clasping. <b>Heads</b> radiate or disciform. <b>Phyllaries</b> strongly unequal to subequal, outer sometimes ± foliaceous, green zones usually diamond-shaped to lanceolate, apices sometimes foliaceous. <b>Ray</b> (or pistillate) florets usually (6–)7–50(–60) in 1 series and laminae (3–)5–18(–21) × 0.8–2.8 mm, sometimes 14–110+ in 2–5+ series (sect. | + | --><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or perennials, eglandular; usually rhizomatous, sometimes taprooted. <b>Stems</b> usually not brittle at maturity, usually proximally glabrous or glabrate and distally hairy in lines, sometimes ± uniformly hairy, sometimes glabrous distally. <b>Leaves</b>: basal usually withering by flowering, usually petiolate, sometimes sessile or subsessile, blades 1-nerved, spatulate to oblanceolate, elliptic, or ovate to cordate, margins coarsely serrate to crenate or entire; cauline petiolate or sessile, blades widely ovate to linear, bases cordate or subcordate, rounded, cuneate, or attenuate, sometimes auriculate and ± clasping. <b>Heads</b> radiate or disciform. <b>Phyllaries</b> strongly unequal to subequal, outer sometimes ± foliaceous, green zones usually diamond-shaped to lanceolate, apices sometimes foliaceous. <b>Ray</b> (or pistillate) florets usually (6–)7–50(–60) in 1 series and laminae (3–)5–18(–21) × 0.8–2.8 mm, sometimes 14–110+ in 2–5+ series (sect. Conyzopsis) and laminae 4.5–5 × 0.1–0.2 mm or reduced to tubes. <b>Disc</b> corollas ± ampliate, throats usually ± narrowly funnelform, sometimes cylindric or funnelform-campanulate, lobes usually erect, sometimes spreading, recurved, or reflexed. <b>Cypselae</b> cylindric to obovoid or oblong, sometimes ± compressed, 2–6-nerved, glabrous or ± strigillose. <b>x</b> = 7, 8.</span><!-- |
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|distribution=North America;Mexico;Eurasia. | |distribution=North America;Mexico;Eurasia. | ||
|discussion=<p>Species ca. 58 (51 in the flora).</p><!-- | |discussion=<p>Species ca. 58 (51 in the flora).</p><!-- | ||
| − | --><p>Subgenus Symphyotrichum has been divided into three sections: sect. Conyzopsis (x = 7), sect. Symphyotrichum (including sect. Turbinelli) (x = 8), and sect. Occidentales (x = 8). Relationships among sections remain unresolved, and it is uncertain whether sect. Symphyotrichum, for instance, is monophyletic as defined here or elsewhere (e.g., G. L. Nesom 1994b).</p> | + | --><p>Subgenus <i>Symphyotrichum</i> has been divided into three sections: sect. Conyzopsis (x = 7), sect. <i>Symphyotrichum</i> (including sect. Turbinelli) (x = 8), and sect. Occidentales (x = 8). Relationships among sections remain unresolved, and it is uncertain whether sect. <i>Symphyotrichum</i>, for instance, is monophyletic as defined here or elsewhere (e.g., G. L. Nesom 1994b).</p> |
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| − | |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_1117.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; usually rhizomatous, sometimes taprooted. Stems usually not brittle at maturity, usually proximally glabrous or glabrate and distally hairy in lines, sometimes ± uniformly hairy, sometimes glabrous distally. Leaves: basal usually withering by flowering, usually petiolate, sometimes sessile or subsessile, blades 1-nerved, spatulate to oblanceolate, elliptic, or ovate to cordate, margins coarsely serrate to crenate or entire; cauline petiolate or sessile, blades widely ovate to linear, bases cordate or subcordate, rounded, cuneate, or attenuate, sometimes auriculate and ± clasping. Heads radiate or disciform. Phyllaries strongly unequal to subequal, outer sometimes ± foliaceous, green zones usually diamond-shaped to lanceolate, apices sometimes foliaceous. Ray (or pistillate) florets usually (6–)7–50(–60) in 1 series and laminae (3–)5–18(–21) × 0.8–2.8 mm, sometimes 14–110+ in 2–5+ series (sect. Conyzopsis) and laminae 4.5–5 × 0.1–0.2 mm or reduced to tubes. Disc corollas ± ampliate, throats usually ± narrowly funnelform, sometimes cylindric or funnelform-campanulate, lobes usually erect, sometimes spreading, recurved, or reflexed. Cypselae cylindric to obovoid or oblong, sometimes ± compressed, 2–6-nerved, glabrous or ± strigillose. x = 7, 8.
Distribution
North America, Mexico, Eurasia.
Discussion
Species ca. 58 (51 in the flora).
Subgenus Symphyotrichum has been divided into three sections: sect. Conyzopsis (x = 7), sect. Symphyotrichum (including sect. Turbinelli) (x = 8), and sect. Occidentales (x = 8). Relationships among sections remain unresolved, and it is uncertain whether sect. Symphyotrichum, for instance, is monophyletic as defined here or elsewhere (e.g., G. L. Nesom 1994b).
Selected References
None.