View source for Erigeron strigosus

{{Treatment/ID
|accepted_name=Erigeron strigosus
|accepted_authority=Muhlenberg ex Willdenow
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=3: 1956. 1803
|year=1803
}}
|common_names=Common eastern fleabane;vergerette rude
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Erigeron annuus subsp. strigosus
|authority=(Muhlenberg ex Willdenow) Wagenitz
|rank=subspecies
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron strigosus
|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>[[Erigeron]]</div><div class="higher-taxon"><small>species</small>[[Erigeron strigosus]]</div></div>
|volume=Volume 20
|mention_page=page 262, 320, 344, 346, 347
|treatment_page=page 345
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> biennials, or short-lived perennials, 30–70 cm; fibrous-rooted, caudices simple, sometimes lignescent, sometimes producing rhizomes that bear leaf tufts at upturned ends. <b>Stems</b> erect or ascending, sparsely to moderately strigose to strigillose or hirsuto-strigillose (hairs usually ascending, rarely spreading, 0.1–1.2 mm), eglandular. <b>Leaves</b> basal (usually persistent through flowering) and cauline; basal blades spatulate to broadly or narrowly oblanceolate to linear, (10–)30–150(–170) × 5–15(–21) mm, cauline usually gradually reduced distally, continuing to near heads, margins entire or shallowly to deeply serrate or crenate, faces glabrous or glabrate to sparsely strigose or strigoso-hirsute, eglandular. <b>Heads</b> 10–200+ in loosely corymbiform to paniculiform-corymbiform arrays (on distal branches). <b>Involucres</b> (2–)3–4 × 5–12 mm. <b>Phyllaries</b> in 2–4 series, glabrous, strigose, or sparsely hirsute, sometimes minutely glandular. <b>Ray</b> florets 50–100; corollas white, less commonly pinkish or bluish, 4–6 mm, laminae coiling. <b>Disc</b> corollas 1.5–2.5 mm (throats sometimes slightly indurate and inflated). <b>Cypselae</b> (0.5–)0.9–1.2 mm, 2-nerved, faces sparsely strigose; pappi: outer crowns of setae or scales, inner 0 (rays) or of 8–15 bristles (disc).</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;Man.;N.B.;N.S.;Nfld. and Labr. (Nfld.);Ont.;P.E.I.;Que.;Sask.;Ala.;Ark.;Calif.;Colo.;Conn.;D.C.;Del.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Mass.;Md.;Mich.;Minn.;Miss.;Mo.;Mont.;N.C.;N.Dak.;N.H.;N.J.;N.Mex.;N.Y.;Nebr.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Va.;Vt.;W.Va.;Wash.;Wis.;Wyo.;introduced in Europe;Pacific Islands (Hawaii).
|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
|Phyllary hairs flattened, 0.5–1.2 mm; stem hairs appressed to spreading, 0.5–1 mm
|[[Erigeron strigosus var. septentrionalis|Erigeron strigosus var. septentrionalis]]
|-id=key-0-1
|1
|Phyllary hairs terete, mostly 0.1–0.5 mm; stem hairs appressed to ascending, 0.1–0.4(–0.8) mm
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Annual or rarely biennial, without rhizomes; various habitats, often ruderal
|[[Erigeron strigosus var. strigosus|Erigeron strigosus var. strigosus]]
|-id=key-0-2
|2
|Plants usually perennial (sometimes killed prematurely by severe drought), with rhizomes that bear overwintering leaf tufts at upturned ends; shallow soils over calcareous rock
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Basal leaves linear to linear-oblanceolate, 1–3.5(–6) mm wide; cauline leaf faces sparsely to moderately strigillose
|[[Erigeron strigosus var. dolomiticola|Erigeron strigosus var. dolomiticola]]
|-id=key-0-3
|3
|Basal leaves oblanceolate to narrowly obovate or spatulate, (3.2–)3.8–15(–21) mm wide; cauline leaf faces glabrous, margins and midveins ciliate
|[[Erigeron strigosus var. calcicola|Erigeron strigosus var. calcicola]]
|}
</div></div><!--

-->{{#Taxon:
name=Erigeron strigosus
|authority=Muhlenberg ex Willdenow
|rank=species
|parent rank=genus
|synonyms=Erigeron annuus subsp. strigosus
|basionyms=
|family=Asteraceae
|distribution=Alta.;B.C.;Man.;N.B.;N.S.;Nfld. and Labr. (Nfld.);Ont.;P.E.I.;Que.;Sask.;Ala.;Ark.;Calif.;Colo.;Conn.;D.C.;Del.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Mass.;Md.;Mich.;Minn.;Miss.;Mo.;Mont.;N.C.;N.Dak.;N.H.;N.J.;N.Mex.;N.Y.;Nebr.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Va.;Vt.;W.Va.;Wash.;Wis.;Wyo.;introduced in Europe;Pacific Islands (Hawaii).
|reference=None
|publication title=Sp. Pl.
|publication year=1803
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_794.xml
|tribe=Asteraceae tribe Astereae
|genus=Erigeron
|species=Erigeron strigosus
}}<!--

-->[[Category:Treatment]][[Category:Erigeron]]