Difference between revisions of "Erigeron glabellus"

Nuttall

Gen. N. Amer. Pl. 2: 147. 1818.

Common names: Streamside fleabane
Endemic
Treatment appears in FNA Volume 20. Treatment on page 331. Mentioned on page 259, 263, 267, 332.
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|discussion=<p>Varieties 2 (2 in the flora).</p><!--
 
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
 
--><p><i>Erigeron glabellus</i> is recognized by its subsimple caudices and fibrous-rooted bases, relatively numerous rays with nearly filiform laminae, and nonglandular vestiture.</p>
 
--><p><i>Erigeron glabellus</i> is recognized by its subsimple caudices and fibrous-rooted bases, relatively numerous rays with nearly filiform laminae, and nonglandular vestiture.</p>
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name=Erigeron glabellus
 
name=Erigeron glabellus
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|distribution=North America.
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|distribution=Alta.;B.C.;Man.;N.W.T.;Ont.;Sask.;Yukon;Alaska;Colo.;Idaho;Minn.;Mont.;N.Dak.;N.Mex.;S.Dak.;Utah;Wis.;Wyo.
 
|reference=None
 
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|publication title=Gen. N. Amer. Pl.
 
|publication title=Gen. N. Amer. Pl.
 
|publication year=1818
 
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|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V20_753.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_753.xml
 
|tribe=Asteraceae tribe Astereae
 
|tribe=Asteraceae tribe Astereae
 
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Latest revision as of 18:25, 6 November 2020

Biennials or perennials, 7–50(–70) cm; rhizomatous, caudices or rhizomes relatively short and thickened, simple or branched, usually appearing merely fibrous-rooted. Stems erect or slightly basally ascending, hirsute or hirsuto-villous to strigose or glabrate, eglandular. Leaves basal (persistent) and cauline; basal blades oblanceolate to oblanceolate-spatulate, 40–150 × 3–15 mm, margins usually entire, sometimes shallowly dentate, faces hirsute or hirsuto-villous to sparsely strigose or glabrate, eglandular; cauline blades usually becoming lanceolate, abruptly or gradually reduced distally (bases sometimes subclasping). Heads 1–15. Involucres 5–9 × 10–20 mm. Phyllaries in (2–)3–4 series (greenish), hirsute to strigose, eglandular. Ray florets 125–175; corollas white to pink or blue, 8–15 mm, laminae (nearly filiform) coiling tardily at tips. Disc corollas 4–5.5 mm. Cypselae 1.2–1.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 16–20 bristles.

Distribution

V20-753-distribution-map.gif

Alta., B.C., Man., N.W.T., Ont., Sask., Yukon, Alaska, Colo., Idaho, Minn., Mont., N.Dak., N.Mex., S.Dak., Utah, Wis., Wyo.

Discussion

Varieties 2 (2 in the flora).

Erigeron glabellus is recognized by its subsimple caudices and fibrous-rooted bases, relatively numerous rays with nearly filiform laminae, and nonglandular vestiture.

Selected References

None.

Key

1 Stems strigose (hairs closely appressed to ascending), sometimes sparsely so to glabrate Erigeron glabellus var. glabellus
1 Stems hirsute to hirsuto-villous (hairs spreading) Erigeron glabellus var. pubescens