View source for Microseris acuminata

{{Treatment/ID
|accepted_name=Microseris acuminata
|accepted_authority=Greene
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=10: 88. 1883
|year=1883
}}
|common_names=Sierra foothills silverpuffs
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Microseris;Microseris acuminata
|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>[[Microseris]]</div><div class="higher-taxon"><small>species</small>[[Microseris acuminata]]</div></div>
|volume=Volume 19
|mention_page=page 339
|treatment_page=page 345
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 5–35 cm; taprooted. <b>Stems</b> 0. <b>Leaves</b> basal; petiolate; blades linear to narrowly elliptic, 3–20 cm, margins usually pinnately lobed (with narrow rachis and linear lobes), rarely entire, apices acuminate, faces glabrous or lightly scurfy-puberulent. <b>Peduncles</b> erect or curved-ascending, ebracteate. <b>Involucres</b> ovoid to fusiform in fruit, 10–22 mm. <b>Phyllaries</b>: apices erect, acute to acuminate, abaxial faces glabrous; outer deltate; inner lanceolate, (midveins often purple, thickened). <b>Florets</b> 5–50; corollas yellow, equaling or surpassing phyllaries by 1–3 mm. <b>Cypselae</b> columnar, 4.5–7 mm; pappi of 5, white or light brown, linear-lanceolate, aristate scales 4–11 mm (arcuate, scarcely involute, apices acuminate, faces usually glabrous, rarely villous, midveins brownish, stout, widths 1/5–1/3 bodies, tapered distally), aristae (white or brown) barbellate. <b>2n</b> = 36.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–Jun.
|habitat=Clay soils, flats and hillsides, sometimes near vernal pools, grasslands and open oak woodlands
|elevation=30–600 m
|distribution=Calif.;Oreg.
|discussion=<p><i>Microseris acuminata</i> occurs in the Sacramento and northern San Joaquin valleys and surrounding foothills; it is disjunct in Jackson County, Oregon. K. L. Chambers (1955) proposed that this morphologically distinctive tetraploid species is of alloploid origin and that <i>M. douglasii</i> is one of its possible diploid parents. Recent molecular evidence (D. Roelofs et al. 1997) supports that relationship and also favors a relationship, through an extinct common ancestor, with the tetraploid <i>M. campestris</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Microseris acuminata
|author=
|authority=Greene
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering Apr–Jun.
|habitat=Clay soils, flats and hillsides, sometimes near vernal pools, grasslands and open oak woodlands
|elevation=30–600 m
|distribution=Calif.;Oreg.
|reference=None
|publication title=Bull. Torrey Bot. Club
|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/V19_536.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Microseris
|species=Microseris acuminata
}}<!--

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