View source for Symphyotrichum tenuifolium

{{Treatment/ID
|accepted_name=Symphyotrichum tenuifolium
|accepted_authority=(Linnaeus) G. L. Nesom
|publications={{Treatment/Publication
|title=Phytologia
|place=77: 293. 1995
|year=1995
}}
|common_names=Perennial saltmarsh aster
|basionyms={{Treatment/ID/Basionym
|name=Aster tenuifolius
|authority=Linnaeus
|publication_title=Sp. Pl.
|publication_place=2: 873. 1753
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Symphyotrichum;Symphyotrichum subg. Astropolium;Symphyotrichum tenuifolium
|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 class="higher-taxon"><small>species</small>[[Symphyotrichum tenuifolium]]</div></div>
|volume=Volume 20
|mention_page=page 468, 473
|treatment_page=page 479
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> (20–)40–60(–100) cm, colonial or cespitose; rhizoma-tous. <b>Stems</b> 1–5+, ascending to erect (often with purple or purplish brown areas, flexuous, wiry), little-branched, usually glabrous, sometimes hairy in lines distally. <b>Leaves</b> thick (fleshy), margins entire, faces glabrous; basal withering by flowering (new winter rosettes appearing at flowering), petiolate (petioles sheathing), blades ovate or oblanceolate, 15–20 × 5–15 mm, bases cuneate, apices rounded; proximal cauline withering by flowering, usually sessile, blades lanceolate, linear-lanceolate or -oblanceolate, to linear, 7–80(–150) × 1–6 (–12) mm, bases attenuate, margins entire, apices acuminate to acute; distal sessile, blades narrowly lanceolate to subulate, 10–110 × 0.5–5 mm, apices acuminate. <b>Heads</b> (1–)3–20(–40), in open, diffuse, paniculiform arrays, branches patent. <b>Peduncles</b> 0.6–4 (–6) cm, bracts 2–8, awl-shaped, grading into phyllaries. <b>Involucres</b> narrowly turbinate, 4.1–9.5(–11) mm. <b>Phyllaries</b> in 4–5 series, lanceolate to subulate, bases indurate, rounded, margins hyaline, often tinged with purple, entire, green zones spatulate to oblanceolate-rhombic, apices acute, adaxial faces glabrous or minutely hairy distally. <b>Ray</b> florets 10–25; corollas white or pink, laminae (4.5–)5–8.5(–9.5) × 1.2–2 mm. <b>Disc</b> florets 25–45(–54); corollas yellow becoming purplish, 3.4–6(–6.8) mm, tubes shorter than to equaling the narrowly funnelform throats (sparsely hairy at base), lobes ± erect, narrowly triangular, 0.5–0.8 mm. <b>Cypselae</b> light brown, narrowly obovoid to fusiform, sometimes ± compressed, 1.5–4(–4.5) mm, 5–6-nerved, faces sparsely strigillose; pappi tawny to white, 3–6.1 mm.</span><!--

-->{{Treatment/Body
|distribution=e United States;West Indies.
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
--><p>Along the Gulf of Mexico Coast in central and northern peninsular Florida, vars. tenuifolium and aphyllum intergrade in nearly all characters (S. D. Sundberg 2004). G. L. Nesom (2005d) treated the varieties as species.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Stems 1, rhizomes long; mid leaves (1.5–)3–6 mm wide; involucres 6–9.5(–11) mm; ray florets (12–)17–25; disc florets 25–45(–54), corollas (4–)4.7–6(–6.5) mm; cypselae 2.8–4(–4.5) mm; pappi 5–6.1 mm
|[[Symphyotrichum tenuifolium var. tenuifolium|Symphyotrichum tenuifolium var. tenuifolium]]
|-id=key-0-1
|1
|Stems 1–5+ (clustered), rhizomes short; mid leaves (1–)1.5–2.7 mm wide; involucres 4.1–5.3 mm; ray florets 10–16; disc florets (10–)13–23, corollas 3.4–4.6 mm; cypselae 1.5–2(–2.5) mm; pappi 3–4.4 mm
|[[Symphyotrichum tenuifolium var. aphyllum|Symphyotrichum tenuifolium var. aphyllum]]
|}
</div></div><!--

-->{{#Taxon:
name=Symphyotrichum tenuifolium
|author=
|authority=(Linnaeus) G. L. Nesom
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=Aster tenuifolius
|family=Asteraceae
|distribution=e United States;West Indies.
|reference=None
|publication title=Phytologia
|publication year=1995
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V20_1077.xml
|tribe=Asteraceae tribe Astereae
|genus=Symphyotrichum
|subgenus=Symphyotrichum subg. Astropolium
|species=Symphyotrichum tenuifolium
}}<!--

-->[[Category:Treatment]][[Category:Symphyotrichum subg. Astropolium]]