View source for Chaenactis fremontii

{{Treatment/ID
|accepted_name=Chaenactis fremontii
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=19: 30. 1883
|year=1883
}}
|common_names=Fremont or desert pincushion;pincushion flower
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Chaenactidinae;Chaenactis;Chaenactis sect. Chaenactis;Chaenactis fremontii
|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 fremontii]]</div></div>
|volume=Volume 21
|mention_page=page 409, 411
|treatment_page=page 414
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>10–30(–40) cm; proximal indument glabrescent (early ± arachnoid, glabrous by flowering). <b>Stems</b> mostly 1–12; branches mainly proximal. <b>Leaves</b> basal (withering) and ± cauline, 1–7(–10) cm; largest blades linear and terete or ± elliptic and plane, ± succulent, 0–1-pinnately lobed; lobes 1–2(–5) pairs, remote, ± terete. <b>Heads</b> (± radiant) mostly 1–5 per stem. <b>Peduncles</b> 2–8(–10) cm, distally usually ± stipitate-glandular and, sometimes, ± arachnoid (at least early, often glabrescent by fruit). <b>Involucres</b> ± hemispheric to obconic (bases pale and ± truncate in fruit). <b>Phyllaries</b>: longest 8–10(–12) mm; outer usually glabrescent in fruit, apices erect, acute, ± rigid. <b>Florets</b>: corollas white to pinkish, 5–8 mm (inner); peripheral corollas spreading, zygomorphic, enlarged. <b>Cypselae</b> (3–)6–8 mm; pappi of (1–)4(–5) scales in 1 series, longest scales 6–8.5 mm, lengths 1–1.3 times corollas (apices visible among corollas at flowering). <b>2n</b> = 10.</span><!--

-->{{Treatment/Body
|phenology=Flowering Mar–May.
|habitat=Sandy or gravelly soils, warm deserts, often growing through shrubs
|elevation=-10–1600 m
|distribution=Ariz.;Calif.;Nev.;Utah;Mexico (Baja California).
|discussion=<p><i>Chaenactis fremontii</i> is often the most abundant spring wildflower in the lower Mojave and northern Sonoran deserts, where it is reported to be a significant food source for desert tortoises (Gopherus agassizii Cooper). It also extends seaward into the southern San Joaquin Valley area of west-central California, often as hybrids with other taxa (see sectional discussion).</p><!--
--><p>The involucre bases described above are characteristic of <i>Chaenactis fremontii</i> and can help separate it from some forms of <i>C. stevioides</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Chaenactis fremontii
|author=
|authority=A. Gray
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering Mar–May.
|habitat=Sandy or gravelly soils, warm deserts, often growing through shrubs
|elevation=-10–1600 m
|distribution=Ariz.;Calif.;Nev.;Utah;Mexico (Baja California).
|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/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_1038.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae
|genus=Chaenactis
|section=Chaenactis sect. Chaenactis
|species=Chaenactis fremontii
}}<!--

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