View source for Ivesia sericoleuca

{{Treatment/ID
|accepted_name=Ivesia sericoleuca
|accepted_authority=(Rydberg) Rydberg in N. L. Britton et al.
|publications={{Treatment/Publication
|title=in N. L. Britton et al., N. Amer. Fl.
|place=22: 284. 1908
|year=1908
}}
|common_names=Plumas ivesia
|special_status={{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Synonym
|name=Horkelia sericoleuca
|authority=Rydberg
}}
|synonyms={{Treatment/ID/Synonym
|name=Potentilla sericoleuca
|authority=(Rydberg) J. T. Howell
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Ivesia;Ivesia sect. Unguiculatae;Ivesia sericoleuca
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Rosoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Potentilleae]]</div><div class="higher-taxon"><small>genus</small>[[Ivesia]]</div><div class="higher-taxon"><small>section</small>[[Ivesia sect. Unguiculatae]]</div><div class="higher-taxon"><small>species</small>[[Ivesia sericoleuca]]</div></div>
|volume=Volume 9
|mention_page=page 238, 239, 241, 242
|treatment_page=page 240
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>silvery to grayish green; glands usually sparse, sometimes abundant. <b>Stems</b> decumbent to ascending, 1.5–4.5 dm. <b>Basal</b> leaves 10–20(–30) cm; sheathing base densely strigose abaxially; stipules absent; petiole 2–6(–10) cm, hairs abundant, usually spreading, 1–4 mm; leaflets 20–35 per side, loosely overlapping, 3–15 mm, lobes 0–4, oblanceolate to elliptic, hairs abundant, spreading to ascending, (0.5–)1–3(–4) mm. <b>Cauline</b> leaves 3–8(–10). <b>Inflorescences</b> 20–120-flowered, (2–)4–14 cm diam., flowers mostly arranged in several to many tight glomerules of 5–10 flowers. <b>Pedicels</b> 1–3(–12) mm. <b>Flowers</b> 10–15 mm diam.; epicalyx bractlets narrowly lanceolate to narrowly elliptic, (1.5–)2–2.5(–3) mm; hypanthium campanulate to shallowly turbinate, 1.5–3 × 2.5–4.5(–5) mm, often nearly as deep as wide; sepals sometimes purple-suffused, 3–5.5 mm, acute to acuminate; petals white, broadly spatulate to broadly obovate or obcordate, 4–7 mm; stamens 20, filaments filiform, 1.5–3 mm, anthers white to cream, 0.5–0.7 mm; carpels 2–7, styles 2.5–4 mm. <b>Achenes</b> brown, 2–3 mm. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Dry gravelly meadows, margins of seeps, usually on vernally saturated volcanic soil, in sagebrush and grass communities, conifer woodlands
|elevation=1300–2300 m
|distribution=Calif.
|discussion=<p>Of conservation concern.</p><!--
--><p><i>Ivesia sericoleuca</i> is known from valleys and flats in the northern Sierra <i>Nevada</i>. Many historic collections were identified and distributed as <i>I. unguiculata</i>, and circumscriptions prior to 1962 include <i>I. aperta</i> (hence reports from <i>Nevada</i>).</p><!--
--><p>Hairs are usually dense in plants of <i>Ivesia sericoleuca</i>, such that the leaves, and occasionally the stems and branches, are silvery gray, especially in Sierra Valley and the Feather River drainage. Plants in the Truckee River drainage tend to be less hairy with redder stems, less glomerate inflorescences, shallower hypanthia, and more conspicuous glandularity.</p><!--
--><p>As mentioned by J. T. Howell (1962), the chromosome count given for <i>Ivesia sericoleuca</i> by P. A. Munz (1959) most likely was based on a collection of <i>I. aperta </i>var.<i> aperta</i>. The chromosome count given here is instead based on Kruckeberg 3665, originally distributed as <i>I. pickeringii</i>.</p>
|tables=
|references=
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-->{{#Taxon:
name=Ivesia sericoleuca
|author=
|authority=(Rydberg) Rydberg in N. L. Britton et al.
|rank=species
|parent rank=section
|synonyms=Potentilla sericoleuca
|basionyms=Horkelia sericoleuca
|family=Rosaceae
|phenology=Flowering summer.
|habitat=Dry gravelly meadows, margins of seeps, usually on vernally saturated volcanic soil, in sagebrush and grass communities, conifer woodlands
|elevation=1300–2300 m
|distribution=Calif.
|reference=None
|publication title=in N. L. Britton et al., N. Amer. Fl.
|publication year=1908
|special status=Conservation concern;Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V9/V9_371.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Potentilleae
|genus=Ivesia
|section=Ivesia sect. Unguiculatae
|species=Ivesia sericoleuca
}}<!--

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