View source for Chaenactis nevii

{{Treatment/ID
|accepted_name=Chaenactis nevii
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Proc. Amer Acad. Arts
|place=19: 30. 1883
|year=1883
}}
|common_names=John Day pincushion
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Chaenactidinae;Chaenactis;Chaenactis sect. Chaenactis;Chaenactis nevii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Chaenactidinae]]</div><div class="higher-taxon"><small>genus</small>[[Chaenactis]]</div><div class="higher-taxon"><small>section</small>[[Chaenactis sect. Chaenactis]]</div><div class="higher-taxon"><small>species</small>[[Chaenactis nevii]]</div></div>
|volume=Volume 21
|mention_page=page 408, 409
|treatment_page=page 411
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>10–30 cm; proximal indument greenish to grayish, stipitate-glandular and, sometimes, sparsely arachnoid or villous. <b>Stems</b> mostly 1–3; branches mainly distal. <b>Leaves</b> basal (withering) and cauline, 2–5 cm; largest blades ± elliptic, ± plane to 3-dimensional, not succulent, 1–2-pinnately lobed; primary lobes mostly 3–8 pairs, ± remote, ultimate lobes ± plane to involute. <b>Heads</b> mostly 3–9 per stem. <b>Peduncles</b> 1–6 cm, distally stipitate-glandular and, sometimes, ± arachnoid to villous. <b>Involucres</b> ± hemispheric to campanulate. <b>Phyllaries</b>: longest 6–9 mm; outer predominantly stipitate-glandular and, sometimes, ± arachnoid to villous in fruit, apices ± erect, acute, rigid. <b>Florets</b>: corollas bright yellow, 4–6.5 mm; peripheral corollas ± erect, actinomorphic, scarcely enlarged. <b>Cypselae</b> 3.5–6 mm (compressed); pappi 0 or coroniform (of ± 10 scales, longest 0.1–0.5 mm). <b>2n</b> = 12.</span><!--

-->{{Treatment/Body
|phenology=Flowering late Apr–mid July.
|habitat=Nearly barren, heavy clay soils from volcanic ash and tuff, sometimes disturbed or moist sites
|elevation=400–1000 m
|distribution=Oreg.
|discussion=<p><i>Chaenactis nevii</i> is known from the John Day Basin area in Gilliam, Grant, Jefferson, Wasco, and Wheeler counties. This odd and isolated species combines traits of <i>C. artemisiifolia</i> (sect. Acarphaea) and <i>C. glabriuscula</i>, and might be descended from their common ancestor.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Chaenactis nevii
|authority=A. Gray
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering late Apr–mid July.
|habitat=Nearly barren, heavy clay soils from volcanic ash and tuff, sometimes disturbed or moist sites
|elevation=400–1000 m
|distribution=Oreg.
|reference=None
|publication title=Proc. Amer Acad. Arts
|publication year=1883
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V21_1030.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae
|genus=Chaenactis
|section=Chaenactis sect. Chaenactis
|species=Chaenactis nevii
}}<!--

-->[[Category:Treatment]][[Category:Chaenactis sect. Chaenactis]]