View source for Erigeron denalii

{{Treatment/ID
|accepted_name=Erigeron denalii
|accepted_authority=A. Nelson
|publications={{Treatment/Publication
|title=Amer. J. Bot.
|place=32: 289. 1945
|year=1945
}}
|common_names=Denali fleabane
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Erigeron mexiae
|authority=K. M. Becker
|rank=species
}} {{Treatment/ID/Synonym
|name=Erigeron purpuratus var. dilatatus
|authority=B. Boivin
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron denalii
|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 denalii]]</div></div>
|volume=Volume 20
|mention_page=page 265
|treatment_page=page 303
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 1–5 cm; taprooted, caudices diffuse with extensive systems of rhizomelike, relatively long and slender branches. <b>Stems</b> erect (simple, ± scapiform), villous, granular-glandular. <b>Leaves</b> basal (persistent) and cauline; blades spatulate to oblanceolate-spatulate, 10–20 × 2–4(–5) mm, mid larger than basal and proximal, margins entire or shallowly (2–)3-lobed or -toothed apically (apices obtuse to nearly truncate), faces moderately villous, minutely glandular. <b>Heads</b> 1. <b>Involucres</b> (4–)5–7 × 9–12 mm. <b>Phyllaries</b> in 2(–3) series, densely lanate-villous (hairs to 3 mm, often with dark purple cross walls), glandular. <b>Ray</b> florets 30–55; corollas white to lavender, 4–8 mm, laminae (filiform to narrowly straplike, 0.3–2 mm wide, often involute) erect, rarely spreading, not coiling or reflexing. <b>Disc</b> florets 3.8–4.8 mm. <b>Cypselae</b> 3–3.8 mm, 2-nerved, faces strigillose to strigoso-hirsute; pappi: outer 0 (or inconspicuous), inner of 20–25 (usually ± purple-red tinged, sometimes whitish, variable within populations) bristles.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Open alpine and subalpine habitats, tundra slopes, openings in spruce-fir woods, gravelly and shaley scree, cut banks
|elevation=900–2200 m
|distribution=B.C. ;N.W.T.;Yukon;Alaska.
|discussion=<p><i>Erigeron denalii</i> and <i>E. purpuratus</i> are similar and probably closely related; the two appear to be partially sympatric; differences in vestiture and leaf morphology are constant. The habitat of <i>E. purpuratus</i>, sandy or gravelly alluvium, also is remarkably constant and distinct from that of <i>E. denalii</i>. Apparently correlated with the habitat, plants of <i>E. purpuratus</i> almost always develop a relatively long and slender, woody taproot; taproots of <i>E. denalii</i> apparently are less well defined and often are not collected.</p><!--
--><p>Plants of the type collection of <i>Erigeron</i> mexiae have ray corollas with relatively broad laminae (1.5–2 mm wide); ray corolla width is variable in <i>E. denalii</i>, and E. mexiae is regarded here as an extreme variant within the species. In other characters, there appears to be no difference.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Erigeron denalii
|authority=A. Nelson
|rank=species
|parent rank=genus
|synonyms=Erigeron mexiae;Erigeron purpuratus var. dilatatus
|basionyms=
|family=Asteraceae
|phenology=Flowering Jun–Aug.
|habitat=Open alpine and subalpine habitats, tundra slopes, openings in spruce-fir woods, gravelly and shaley scree, cut banks
|elevation=900–2200 m
|distribution=B.C. ;N.W.T.;Yukon;Alaska.
|reference=None
|publication title=Amer. J. Bot.
|publication year=1945
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V20_650.xml
|tribe=Asteraceae tribe Astereae
|genus=Erigeron
|species=Erigeron denalii
}}<!--

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