View source for Symphyotrichum robynsianum

{{Treatment/ID
|accepted_name=Symphyotrichum robynsianum
|accepted_authority=(J. Rousseau) Brouillet & Labrecque
|publications={{Treatment/Publication
|title=Phytologia
|place=82: 138. 1997
|year=1997
}}
|common_names=Robyns’s aster;aster à longues feuilles
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Aster robynsianus
|authority=J. Rousseau
|rank=species
|publication_title=Bull. Jard. Bot. État Bruxelles
|publication_place=27: 378, fig. 37. 1957
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Symphyotrichum;Symphyotrichum subg. Symphyotrichum;Symphyotrichum sect. Symphyotrichum;Symphyotrichum robynsianum
|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 robynsianum]]</div></div>
|volume=Volume 20
|mention_page=page 478, 501, 520
|treatment_page=page 530
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 10–80 cm, colonial; long-rhizomatous. <b>Stems</b> 1, erect (± flexuous, often reddish), glabrous, hairy in lines distally. <b>Leaves</b> stiff, margins sparsely serrulate or entire, ± revolute, scabrous, apices acute to acuminate, mucronulate, faces glabrous, sometimes midveins hairy; basal withering by flowering, long-petiolate, petioles narrowly winged, bases sheathing, blades lanceolate, ca. 20 × 3–5 mm, slightly attenuate to narrowly cuneate; proximal cauline withering by flowering, sessile or subpetiolate, blades linear-lanceolate to -oblanceolate, 100–200 × 4–8 mm, bases cuneate to attenuate, clasping; distal sessile, blades linear-lanceolate to linear, 10–110 × 1–7 mm, progressively reduced distally, bases cuneate to rounded, slightly clasping or not, margins entire. <b>Heads</b> in elongate, open, narrow, paniculiform or racemiform arrays, branches ascending, short, leafy, branch leaves smaller and reduced distally (heads 1–3 per branch). <b>Peduncles</b> glabrous or ± densely pilose in lines, bracts 1–4, linear, sometimes inrolled distally, clasping, ciliate, distal 1–2 often subtending and surpassing involucres. <b>Involucres</b> campanulate, 5–8.5 mm. <b>Phyllaries</b> in 3–4 series, oblong-lanceolate, subequal, bases indurate 1/3–3/4, margins scarious, erose, hyaline, ciliate proximally, sparsely ciliolate distally, green zones lanceolate to linear, sometimes outer ± foliaceous, apices acuminate to long-acuminate, often foliaceous, mucronate to apiculate, faces glabrous, eglandular. <b>Ray</b> florets 20–35; corollas dark blue-violet, seldom white, laminae 8–13 × 1–1.5 mm. <b>Disc</b> florets (18–)23–40; corollas yellow, 4–6.5 mm, tubes shorter than funnelform throats, lobes lanceolate, 0.8–1 mm. <b>Cypselae</b> tan, obovoid, compressed, ca. 2.2–2.4 mm, 5–6-nerved, faces sparsely strigillose; pappi pinkish, 7–8 mm. <b>2n</b> = 64, 80.</span><!--

-->{{Treatment/Body
|phenology=Flowering Aug–Sep.
|habitat=Wet or damp, open, sandy, gravelly, or rocky grounds, often calcareous, cracks in rocky stream or lake shores, limestone alvars, seasonally wet glades and swales, jackpine outwash plains
|elevation=10–400 m
|distribution=Man.;Ont.;Que.;Mich.;Minn.;Wis.
|discussion=<p>The name <i>Aster</i> longifolius Lamarck has been misapplied to this taxon.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Symphyotrichum robynsianum
|authority=(J. Rousseau) Brouillet & Labrecque
|rank=species
|parent rank=section
|synonyms=
|basionyms=Aster robynsianus
|family=Asteraceae
|phenology=Flowering Aug–Sep.
|habitat=Wet or damp, open, sandy, gravelly, or rocky grounds, often calcareous, cracks in rocky stream or lake shores, limestone alvars, seasonally wet glades and swales, jackpine outwash plains
|elevation=10–400 m
|distribution=Man.;Ont.;Que.;Mich.;Minn.;Wis.
|reference=None
|publication title=Phytologia
|publication year=1997
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_1178.xml
|tribe=Asteraceae tribe Astereae
|genus=Symphyotrichum
|subgenus=Symphyotrichum subg. Symphyotrichum
|section=Symphyotrichum sect. Symphyotrichum
|species=Symphyotrichum robynsianum
}}<!--

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