View source for Horkelia tridentata var. tridentata

{{Treatment/ID
|accepted_name=Horkelia tridentata var. tridentata
|accepted_authority=unknown
|publications=
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Potentilla tilingii
|authority=(Regel) Greene
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Horkelia;Horkelia sect. Tridentatae;Horkelia tridentata;Horkelia tridentata var. tridentata
|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>[[Horkelia]]</div><div class="higher-taxon"><small>section</small>[[Horkelia sect. Tridentatae]]</div><div class="higher-taxon"><small>species</small>[[Horkelia tridentata]]</div><div class="higher-taxon"><small>variety</small>[[Horkelia tridentata var. tridentata]]</div></div>
|volume=Volume 9
|mention_page=page 268
|treatment_page=page 269
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>decumbent to nearly erect, 1–4(–7) dm. <b>Inflorescences</b> composed of 1+ 5–40-flowered ± capitate glomerules, these sometimes expanding with age. <b>Flowers</b> 4–9 mm diam.; hypanthium 2–3.5(–5) mm diam., interior glabrous; petals linear to oblanceolate, (1.5–)2–3.5(–4.5) × 0.3–1 mm, usually ± equal to or longer than sepals, apex acute to obtuse; filaments 0.5–1(–2) × 0.1–0.2 mm, anthers 0.2–0.3(–0.4) mm; styles 1–2 mm. <b>Achenes</b> 1.5–2 mm, lightly rugose. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer.
|habitat=Open areas, primarily in sagebrush communities and conifer woodlands, mainly on granitic or volcanic soil
|elevation=300–2500 m
|distribution=Calif.;Oreg.
|discussion=<p>Variety tridentata occurs throughout the Cascade Mountains and Sierra <i>Nevada</i> of California, and barely extends into southern Oregon near Ashland, Josephine County, where the presence of distal cauline glands on some plants indicates possible introgression with <i>Horkelia congesta</i>. A specimen from Glendale, Oregon, (Jones s.n., POM) that was annotated and cited by D. D. Keck (1938) as <i>H. congesta</i> subsp. nemorosa is fully comparable to the Ashland material of <i></i></i>var.<i><i> tridentata</i>; the apparent disjunction in Douglas County needs to be confirmed.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Horkelia tridentata var. tridentata
|author=
|authority=unknown
|rank=variety
|parent rank=species
|synonyms=Potentilla tilingii
|basionyms=
|family=Rosaceae
|phenology=Flowering spring–summer.
|habitat=Open areas, primarily in sagebrush communities and conifer woodlands, mainly on granitic or volcanic soil
|elevation=300–2500 m
|distribution=Calif.;Oreg.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V9/V9_430.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Potentilleae
|genus=Horkelia
|section=Horkelia sect. Tridentatae
|species=Horkelia tridentata
|variety=Horkelia tridentata var. tridentata
}}<!--

-->[[Category:Treatment]][[Category:Horkelia tridentata]]