View source for Symphyotrichum ontarionis

{{Treatment/ID
|accepted_name=Symphyotrichum ontarionis
|accepted_authority=(Wiegand) G. L. Nesom
|publications={{Treatment/Publication
|title=Phytologia
|place=77: 287. 1995
|year=1995
}}
|common_names=Ontario or bottomland aster;aster du lac Ontario
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Aster ontarionis
|authority=Wiegand
|rank=species
|publication_title=Rhodora
|publication_place=30: 179. 1928
}} {{Treatment/ID/Basionym
|name=Aster missouriensis
|authority=Britton
|rank=species
|publication_title=
|publication_place=1898
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Symphyotrichum;Symphyotrichum subg. Symphyotrichum;Symphyotrichum sect. Symphyotrichum;Symphyotrichum ontarionis
|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 ontarionis]]</div></div>
|volume=Volume 20
|mention_page=page 469, 501, 515
|treatment_page=page 518
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 20–120 cm, colonial; long-rhizomatous. <b>Stems</b> 1–(2–3), ascending to erect (straight), proximally glabrate, distally uniformly villous or hirsute, or glabrous (<i></i>var.<i> glabratum</i>). <b>Leaves</b> thin, margins scabrous, apices mucronate, abaxial faces usually sparsely to densely strigose or strigillose, sometimes glabrous (<i></i>var.<i> glabrum</i>), adaxial usually strigose or scabrous, sometimes glabrate or glabrous (<i></i>var.<i> glabrum</i>); basal withering by flowering, petiolate to subpetiolate (petioles narrowly winged, ciliate, bases sheathing), blades spatulate to oblanceolate-obovate, 10–40 × 5–10 mm, bases attenuate, margins crenate-serrate, apices acute to rounded; proximalmost cauline usually withering by flowering, petiolate or sessile (petioles narrowly winged, ± clasping), blades ovate or lance-ovate to elliptic-lanceolate or oblanceolate, 20–80(–12) × 5–35 mm, progressively reduced distally, bases attenuate to cuneate, margins serrate (sometimes coarsely) to crenate-serrate, apices acute to acuminate or short-caudate; distal sessile, blades elliptic-lanceolate to oblanceolate or lanceolate, (6–)10–80+ × 2–25 mm, progressively reduced distally, bases cuneate, margins entire to serrulate, apices acute to acuminate. <b>Heads</b> in ample, open, paniculiform arrays, branches ± ascending or divaricate to long-arching, ± secund. <b>Peduncles</b> subsessile or 2–10(–20) mm, ± pilose, bracts 1–5, linear-lanceolate, pilose, grading into phyllaries. <b>Involucres</b> campanulate, 3–5.5 mm. <b>Phyllaries</b> in (3–)4–6 series, unequal, appressed or ± spreading, linear-obovate (outer) to oblong-lanceolate to linear (inner), bases indurate 1/3–3/4, margins narrowly scarious to apices, erose, hyaline, ciliate, green zones lanceolate, apices acute to acuminate, mucronulate, faces (outer) sparsely pilose or glabrous (<i></i>var.<i> glabratum</i>), (inner) glabrous. <b>Ray</b> florets (10–)15–26; corollas usually white, rarely pinkish or light purple to blue, laminae 3.5–5.5(–8) × 0.5–1.5 mm. <b>Disc</b> florets 12–25; corollas cream or light yellow turning magenta or purple (ampliate), 2.5–4(–4.5) mm, tubes shorter than funnelform throats, lobes slightly spreading to reflexed, lanceolate, 0.7–1.1 mm. <b>Cypselae</b> gray or tan, oblong-obovoid, sometimes ± compressed, 1.2–1.8(–2) mm, 3–5-nerved, faces strigillose; pappi whitish to white, 3–3.5 mm.</span><!--

-->{{Treatment/Body
|distribution=Ont.;Que.;Ala.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Mich.;Minn.;Miss.;Mo.;N.C.;N.Y.;Nebr.;Okla.;Pa.;S.Dak.;Tenn.;Tex.;Vt.;Wis.
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
--><p><i>Symphyotrichum ontarionis</i> is often confused with <i>S. lateriflorum</i>, from which it can be distinguished by its shorter disc corolla lobes and abaxial leaf faces either moderately to densely hairy or glabrous to glabrate (<i></i>var.<i> glabratum</i>), and without hairs along midveins (as is typical of <i>S. lateriflorum</i>).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Abaxial leaf faces moderately to densely hairy
|[[Symphyotrichum ontarionis var. ontarionis|Symphyotrichum ontarionis var. ontarionis]]
|-id=key-0-1
|1
|Abaxial leaf faces glabrous or glabrate
|[[Symphyotrichum ontarionis var. glabratum|Symphyotrichum ontarionis var. glabratum]]
|}
</div></div><!--

-->{{#Taxon:
name=Symphyotrichum ontarionis
|authority=(Wiegand) G. L. Nesom
|rank=species
|parent rank=section
|synonyms=
|basionyms=Aster ontarionis;Aster missouriensis
|family=Asteraceae
|distribution=Ont.;Que.;Ala.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Mich.;Minn.;Miss.;Mo.;N.C.;N.Y.;Nebr.;Okla.;Pa.;S.Dak.;Tenn.;Tex.;Vt.;Wis.
|reference=None
|publication title=Phytologia
|publication year=1995
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_1152.xml
|tribe=Asteraceae tribe Astereae
|genus=Symphyotrichum
|subgenus=Symphyotrichum subg. Symphyotrichum
|section=Symphyotrichum sect. Symphyotrichum
|species=Symphyotrichum ontarionis
}}<!--

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