View source for Agoseris ×elata

{{Treatment/ID
|accepted_name=Agoseris ×elata
|accepted_authority=(Nuttall) Greene
|publications={{Treatment/Publication
|title=Pittonia
|place=2: 177. 1891
|year=1891
}}
|common_names=Willamette agoseris
|basionyms={{Treatment/ID/Synonym
|name=Stylopappus elatus
|authority=Nuttall
}}
|synonyms={{Treatment/ID/Synonym
|name=Agoseris grandiflora var. laciniata
|authority=(Nuttall) Jepson
}} {{Treatment/ID/Synonym
|name=Agoseris laciniata
|authority=(Nuttall) Greene
}} {{Treatment/ID/Synonym
|name=Agoseris tenuifolia
|authority=Rydberg
}} {{Treatment/ID/Synonym
|name=Stylopappus laciniatus
|authority=Nuttall
}} {{Treatment/ID/Synonym
|name=Stylopappus laciniatus var. longifolius
|authority=Nuttall
}} {{Treatment/ID/Synonym
|name=Troximon grandiflorum var. laciniatum
|authority=(Nuttall) A. Gray
}} {{Treatment/ID/Synonym
|name=Troximon grandiflorum var. tenuifolium
|authority=A. Gray
}} {{Treatment/ID/Synonym
|name=Troximon nuttallii
|authority=unknown
}}
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Agoseris;Agoseris ×elata
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cichorieae]]</div><div class="higher-taxon"><small>genus</small>[[Agoseris]]</div><div class="higher-taxon"><small>species</small>[[Agoseris ×elata]]</div></div>
|volume=Volume 19
|mention_page=page 324, 325, 330
|treatment_page=page 334
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>0. <b>Leaves</b> erect to ascending; blades usually oblanceolate, sometimes lanceolate or obovate, 15–25 cm, margins usually toothed to lobed or pinnatifid, rarely entire, lobes 2–4 pairs, lanceolate to triangular, antrorse to spreading, lobules mostly 0, faces glabrous and glaucous or sparsely villous. <b>Peduncles</b> ± elongating after flowering, 15–65(–90) cm in fruit, glabrate, or apically pubescent or villous, ± stipitate-glandular. <b>Involucres</b> obconic to campanulate, 2–4 cm in fruit. <b>Phyllaries</b> in 2–4 series, medially rosy purple, sometimes purple-black apically, rarely all green or purple-black spotted, faces pubescent to villous, ± stipitate-glandular; outer mostly spreading, adaxially ± villous and eglandular; inner erect, elongating after flowering. <b>Receptacles</b> epaleate. <b>Florets</b> (25–)50–150; corollas orange or yellow, tubes 8–10 mm, ligules 6–8(–12) × 1–3 mm; anthers 2–3(–5) mm. <b>Cypselae</b> (11–)14–20 mm, bodies ± fusiform, (6–)8–10 mm, beaks 5–10 mm, mostly equaling bodies; ribs broadly ridged, straight; pappus bristles in 2–3 series, 10–14 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Sep.
|habitat=Lowland prairies
|elevation=10–100 m
|distribution=Oreg.;Wash.;and montane meadows or open pine forests;1400–2800 m;Calif.;Oreg.;Wash.
|discussion=<p><i>Agoseris ×elata</i> has been and continues to be an enigmatic taxon. Perhaps no other name in the genus has been so misunderstood and misapplied. Many herbarium specimens labeled <i>A. ×elata</i> are in fact misidentified. Specimens of <i>A. ×elata</i> are not abundant in herbaria; the number of actual collections is relatively small compared to those for other <i>Agoseris</i>. Specimens that belong to <i>A. ×elata</i> represent a complex assemblage that has relatively few defining features and appears to be of hybrid origin. Most specimens appear to be intermediate between <i>A. grandiflora</i> and <i>A. aurantiaca</i>; most also appear to have characteristics of <i>A. monticola</i> or <i>A. glauca </i>var.<i> dasycephala</i>. The exact parentage remains unclear.</p><!--
--><p><i>Agoseris ×elata</i> occurs in two geographically separated populations, which cannot be consistently distinguished morphologically: one mainly in scattered lowland prairie locations in the Puget Sound and Willamette Valley areas (the type collection came from this popula tion; no new collections have been taken from this region in over 65 years; it is likely extirpated) and another at high elevations in California, primarily in the Lake Tahoe region and southward in the Sierra <i>Nevada</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Agoseris ×elata
|author=
|authority=(Nuttall) Greene
|rank=species
|parent rank=genus
|synonyms=Agoseris grandiflora var. laciniata;Agoseris laciniata;Agoseris tenuifolia;Stylopappus laciniatus;Stylopappus laciniatus var. longifolius;Troximon grandiflorum var. laciniatum;Troximon grandiflorum var. tenuifolium;Troximon nuttallii
|basionyms=Stylopappus elatus
|family=Asteraceae
|phenology=Flowering Jun–Sep.
|habitat=Lowland prairies
|elevation=10–100 m
|distribution=Oreg.;Wash.;and montane meadows or open pine forests;1400–2800 m;Calif.;Oreg.;Wash.
|reference=None
|publication title=Pittonia
|publication year=1891
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V19_515.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Agoseris
|species=Agoseris ×elata
}}<!--

-->[[Category:Treatment]][[Category:Agoseris]]