View source for Erigeron radicatus

{{Treatment/ID
|accepted_name=Erigeron radicatus
|accepted_authority=Hooker
|publications={{Treatment/Publication
|title=Fl. Bor.-Amer.
|place=2: 17, plate 122. 1834
|year=1834
}}
|common_names=Hooker’s fleabane
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Erigeron huberi
|authority=S. L. Welsh & N. D. Atwood
|rank=species
}} {{Treatment/ID/Synonym
|name=Erigeron macounii
|authority=Greene
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron radicatus
|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 radicatus]]</div></div>
|volume=Volume 20
|mention_page=page 273, 284, 285
|treatment_page=page 294
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> (1–)2–6(–12) cm; taprooted, caudices branches relatively short, thick. <b>Stems</b> erect, strigose to sparsely or densely short-villous (hairs loosely appressed to ascending or spreading), eglandular. <b>Leaves</b> mostly basal (persistent) (eciliate or weakly ciliate proximally); blades 1-nerved linear to narrowly oblanceolate or subspatulate, (5–)10–50(–60) × 0.8–2.5 mm (bases gradually narrowing), margins entire (apices obtuse to rounded), abaxial faces glabrate or glabrous, shiny, adaxial sparsely, loosely strigose, eglandular; cauline mostly on proximal 1/2–1/3 of stems (absent in some high elevation forms), abruptly or gradually reduced distally. <b>Heads</b> 1. <b>Involucres</b> (3–)4–6(–8) × (5–)8–12(–15) mm. <b>Phyllaries</b> in 2–3(–4) series (subequal), villosulous to villoso-hirsutulous (hairs usually with purplish cross walls at least in basal cells), minutely glandular apically or eglandular. <b>Ray</b> florets (12–)20–44(–85); corollas white, less commonly purplish, 4–7(–8) mm, laminae coiling. <b>Disc</b> corollas (2–)2.5–3.5(–4) mm. <b>Cypselae</b> 2.1–2.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of scales, inner of (6–)7–11 (readily falling) bristles.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Aug.
|habitat=Rocky slopes, ridges, and summits, ledges and crevices, outcrops and talus, usually limestone, alpine tundra
|elevation=(1400–)1600–2800(–3400) m
|distribution=Alta.;Sask.;Colo.;Idaho;Mont.;Nebr.;N.Dak.;S.Dak.;Utah;Wyo.
|discussion=<p>Collections of <i>Erigeron radicatus</i> often have been identified as <i>E. ochroleucus</i> <i></i>var.<i> scribneri</i>; <i>E. radicatus</i> is distinctive in its branched caudex, villous cauline vestiture, more reduced leaf vestiture, involucral vestiture of hairs with purple cross walls, shorter disc corollas, and relatively few, readily falling pappus bristles. <i>Erigeron radicatus</i> often is essentially scapiform at relatively high elevation (2700–3400 m) in Idaho, Montana, Utah, and Wyoming; more eastern populations in the Great Plains, at lower elevations (1400–2600 m), have leafier stems but are hardly different in other features. Plants of some populations in Albany and Carbon counties, Wyoming, produce atypically shorter rays.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Erigeron radicatus
|authority=Hooker
|rank=species
|parent rank=genus
|synonyms=Erigeron huberi;Erigeron macounii
|basionyms=
|family=Asteraceae
|phenology=Flowering May–Aug.
|habitat=Rocky slopes, ridges, and summits, ledges and crevices, outcrops and talus, usually limestone, alpine tundra
|elevation=(1400–)1600–2800(–3400) m
|distribution=Alta.;Sask.;Colo.;Idaho;Mont.;Nebr.;N.Dak.;S.Dak.;Utah;Wyo.
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1834
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V20_622.xml
|tribe=Asteraceae tribe Astereae
|genus=Erigeron
|species=Erigeron radicatus
}}<!--

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