View source for Symphyotrichum laeve

{{Treatment/ID
|accepted_name=Symphyotrichum laeve
|accepted_authority=(Linnaeus) Á. Löve & D. Löve
|publications={{Treatment/Publication
|title=Taxon
|place=31: 359. 1982
|year=1982
}}
|common_names=Smooth aster;aster lisse
|basionyms={{Treatment/ID/Basionym
|name=Aster laevis
|authority=Linnaeus
|publication_title=Sp. Pl.
|publication_place=2: 876. 1753
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Symphyotrichum;Symphyotrichum subg. Symphyotrichum;Symphyotrichum sect. Symphyotrichum;Symphyotrichum laeve
|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. Symphyotrichum]]</div><div class="higher-taxon"><small>section</small>[[Symphyotrichum sect. Symphyotrichum]]</div><div class="higher-taxon"><small>species</small>[[Symphyotrichum laeve]]</div></div>
|volume=Volume 20
|mention_page=page 473, 475, 500, 510, 521, 537
|treatment_page=page 508
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials </b>(15–)20–70(–120) cm, cespitose; stoutly short-rhizomatous, with thick, woody caudices or a few, long rhizomes. <b>Stems</b> 1–5+, erect (straight, glaucous, sometimes reddish proximally), glabrous, sometimes sparsely hirsute distally. <b>Leaves</b> (glaucous) thick, firm, ± fleshy, margins crenate-serrate or -serrulate or entire, scabridulous, apices mucronulate, faces glabrous; basal usually withering by flowering or sometimes persistent (<i></i></i>var.<i><i> purpuratum</i>), petiolate (petioles ± winged, bases dilated, sheathing), blades spatulate or oblong to ovate or lanceolate-ovate, 30–200 × 10–25(–30) mm, bases attenuate or cuneate to rounded, margins crenate-serrate to serrulate, apices acute to obtuse or rounded; proximal cauline often withering by flowering, petiolate or subsessile or sessile (petioles narrowly to broadly winged, clasping), blades ovate or oblong-ovate to lanceolate or linear-lanceolate, sometimes ± panduriform, (40–)80–150(–180) × (10–)20–45 mm, bases attenuate to rounded or ± shallowly auriculate-clasping, margins entire or shallowly crenate-serrate, minutely scabrous, apices acute or obtuse, callus-pointed; distal sessile, blades lance-ovate or lanceolate to linear, 7–45 × 1–14 mm, progressively reduced distally (abruptly so in arrays), bases auriculate and ± clasping to rounded, margins entire. <b>Heads</b> in broad, sometimes ± flat-topped, paniculiform arrays, branches stiffly ascending (rarely arching), leafy with small, gradually reduced branch leaves. <b>Peduncles</b> 0.2–6+ cm, glaucous, glabrous or puberulent in lines, bracts 3–6, densely spaced, subulate or linear-lanceolate to linear, subclasping, apices sometimes purplish, grading into phyllaries. <b>Involucres</b> campanulate to cylindro-campanulate, (4.2–)5–7(–8) mm. <b>Phyllaries</b> in 4–6 series, appressed, subulate or lanceolate (outer) to oblong-lanceolate or linear-lancolate or -oblanceolate, unequal (sometimes appearing subequal), bases indurate 1/2–3/4, margins scarious, erose, hyaline, ciliolate distally, green zones mostly diamond-shaped to ± lanceolate (some inner, or most in <i></i></i>var.<i><i> geyeri</i>), apices acute to acuminate, sometimes ± obtuse, red-mucronate or apiculate, faces glabrous. <b>Ray</b> florets (11–)13–23(–34); corollas usually pale to dark blue or purple, seldom white, laminae (6–)7.2–11.3(–14.6) × 1.5–2.5 mm. <b>Disc</b> florets (17–)19–33(–43); corollas yellow turning purplish red, 3.5–6.1 mm, tubes slightly shorter than funnelform throats, lobes triangular, (0.4–)0.6–1 mm. <b>Cypselae</b> deep purple to brown, oblong-obovoid, compressed, 2–3.5 mm, 4–5-nerved, faces glabrous or glabrate; pappi tawny to red- or rose-tinged, 5–7 mm.</span><!--

-->{{Treatment/Body
|distribution=North America;ne Mexico;introduced in other areas of Mexico;Central America;Europe.
|discussion=<p>Varieties 4 (4 in the flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves lanceolate to ovate, conspicuously auriculate-clasping, lengths less than 5 times widths
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Leaves linear-lanceolate to linear, slightly auriculate-clasping, lengths often 5 times widths
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Phyllaries strongly unequal, green apical zones diamond-shaped
|[[Symphyotrichum laeve var. laeve|Symphyotrichum laeve var. laeve]]
|-id=key-0-2
|2
|Phyllaries unequal, green apical zones lanceolate
|[[Symphyotrichum laeve var. geyeri|Symphyotrichum laeve var. geyeri]]
|-id=key-0-3
|3
|Basal leaves withering by flowering, cauline linear-lanceolate
|[[Symphyotrichum laeve var. concinnum|Symphyotrichum laeve var. concinnum]]
|-id=key-0-3
|3
|Leaves mostly basal and proximal at flowering, mostly linear
|[[Symphyotrichum laeve var. purpuratum|Symphyotrichum laeve var. purpuratum]]
|}
</div></div><!--

-->{{#Taxon:
name=Symphyotrichum laeve
|author=
|authority=(Linnaeus) Á. Löve & D. Löve
|rank=species
|parent rank=section
|synonyms=
|basionyms=Aster laevis
|family=Asteraceae
|distribution=North America;ne Mexico;introduced in other areas of Mexico;Central America;Europe.
|reference=None
|publication title=Taxon
|publication year=1982
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V20_1133.xml
|tribe=Asteraceae tribe Astereae
|genus=Symphyotrichum
|subgenus=Symphyotrichum subg. Symphyotrichum
|section=Symphyotrichum sect. Symphyotrichum
|species=Symphyotrichum laeve
}}<!--

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