View source for Eriogonum umbellatum var. polyanthum

{{Treatment/ID
|accepted_name=Eriogonum umbellatum var. polyanthum
|accepted_authority=(Bentham) M. E. Jones
|publications={{Treatment/Publication
|title=Contr. W. Bot.
|place=11: 5. 1903
|year=1903
}}
|common_names=American River sulphur flower
|basionyms={{Treatment/ID/Basionym
|name=Eriogonum polyanthum
|authority=Bentham
|publication_title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|publication_place=14: 12. 1856
}}
|synonyms={{Treatment/ID/Synonym
|name=Eriogonum umbellatum subsp. polyanthum
|authority=(Bentham) S. Stokes
}}
|hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Oligogonum;Eriogonum umbellatum;Eriogonum umbellatum var. polyanthum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Eriogonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Eriogonum]]</div><div class="higher-taxon"><small>subgenus</small>[[Eriogonum subg. Oligogonum]]</div><div class="higher-taxon"><small>species</small>[[Eriogonum umbellatum]]</div><div class="higher-taxon"><small>variety</small>[[Eriogonum umbellatum var. polyanthum]]</div></div>
|volume=Volume 5
|mention_page=page 336, 342, 343, 352
|treatment_page=page 351
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> round, rather open, 4–10 × 5–10 dm. <b>Aerial</b> flowering stems erect, 1–2 dm, floccose, without one or more leaflike bracts ca. midlength. <b>Leaves</b> in rather open, terminal rosettes; blade oblanceolate to narrowly elliptic, 1–3 × 0.3–1(–1.3) cm, densely white-tomentose abaxially, thinly floccose or glabrous and light green adaxially, margins plane. <b>Inflorescences</b> umbellate or compound-umbellate, branched 1–2(–3) times; branches thinly floccose or glabrous, occasionally central branch seemingly with a whorl of bracts ca. midlength; involucral tubes 2.5–4 mm, floccose, lobes 2–3.5 mm. <b>Flowers</b> 4–7 mm; perianth bright yellow.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Sep.
|habitat=Serpentine flats and slopes, oak and montane conifer woodlands
|elevation=800-1500 m
|distribution=Calif.
|discussion=<p>The inflorescences of <i></i></i>var.<i><i> polyanthum</i> are commonly compound-umbellate, but plants with reduced yet bracteated inflorescences do occur. Those with a reduced inflorescence technically consist of a long (6–10 cm), central, bractless peduncle and two lateral branches (3–4 cm), with each of the latter bearing a peduncle (3–6 cm). Such branches seem to have a whorl of leaflike bracts, but actually the bracts are positioned between the branch and involucres (technically at the base of the peduncle) and thus are like other members of the genus.</p><!--
--><p>The name <i></i></i>var.<i><i> polyanthum</i> has been misapplied in California to plants here attributed to <i></i></i>var.<i><i> modocense</i> and <i></i></i>var.<i><i> dumosum</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Eriogonum umbellatum var. polyanthum
|author=
|authority=(Bentham) M. E. Jones
|rank=variety
|parent rank=species
|synonyms=Eriogonum umbellatum subsp. polyanthum
|basionyms=Eriogonum polyanthum
|family=Polygonaceae
|phenology=Flowering Jun–Sep.
|habitat=Serpentine flats and slopes, oak and montane conifer woodlands
|elevation=800-1500 m
|distribution=Calif.
|reference=None
|publication title=Contr. W. Bot.
|publication year=1903
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V5/V5_709.xml
|subfamily=Polygonaceae subfam. Eriogonoideae
|genus=Eriogonum
|subgenus=Eriogonum subg. Oligogonum
|species=Eriogonum umbellatum
|variety=Eriogonum umbellatum var. polyanthum
}}<!--

-->[[Category:Treatment]][[Category:Eriogonum umbellatum]]