View source for Horkelia tridentata var. flavescens

{{Treatment/ID
|accepted_name=Horkelia tridentata var. flavescens
|accepted_authority=(Rydberg) Ertter & Reveal
|publications={{Treatment/Publication
|title=Novon
|place=17: 320. 2007
|year=2007
}}
|common_names=Hairycup horkelia
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Horkelia flavescens
|authority=Rydberg
|rank=species
|publication_title=Monogr. N. Amer. Potentilleae,
|publication_place=138, plate 75. 1898
}}
|synonyms={{Treatment/ID/Synonym
|name=H. tridentata subsp. flavescens
|authority=(Rydberg) D. D. Keck
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Potentilla tilingii var. flavescens
|authority=(Rydberg) J. T. Howell
|rank=variety
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Horkelia;Horkelia sect. Tridentatae;Horkelia tridentata;Horkelia tridentata var. flavescens
|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. flavescens]]</div></div>
|volume=Volume 9
|mention_page=page 268, 269
|treatment_page=page 270
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>± decumbent, 0.5–2.5(–4.5) dm. <b>Inflorescences</b> composed of usually 1 3–25-flowered ± corymbiform cluster. <b>Flowers</b> 6–10 mm diam.; hypanthium 2.5–5 mm diam., interior pilose (except in some North Coast Ranges populations); petals ± broadly oblanceolate, (1–)1.5–3(–4) × 0.5–1.5 mm, often shorter than sepals, apex obtuse to rounded or mucronate; filaments 1–2 × 0.2–0.4(–0.8) mm, anthers 0.3–0.5 mm; styles 1.5–2.5 mm. <b>Achenes</b> 2–2.5 mm, strongly rugose.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Open areas, primarily in conifer woodlands, often on serpentine soil
|elevation=700–2000 m
|distribution=Calif.;Oreg.
|discussion=<p>Variety flavescens occurs primarily in the mountains of northwestern California, from Mendocino to Siskiyou counties. A single collection is confirmed from Curry County, Oregon (Bear Camp Trail, Leach 4554, OSC); other collections from Curry and Josephine counties may be hybrids between this variety and <i>Horkelia congesta </i>var.<i> nemorosa</i>. A second cluster of populations occurs in central Plumas and adjacent Lassen counties, California, and historic collections are known from near Truckee on the border of <i>Nevada</i> and Placer counties, California. D. D. Keck (1938) suggested that this bicentric distribution may have resulted from the independent coalescence of the diagnostic characteristics of <i></i>var.<i> flavescens</i>. The locality of a collection purportedly from Washoe County, <i>Nevada</i> (80 miles north of Reno, Brooks s.n., RENO) needs to be confirmed.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Horkelia tridentata var. flavescens
|authority=(Rydberg) Ertter & Reveal
|rank=variety
|parent rank=species
|synonyms=H. tridentata subsp. flavescens;Potentilla tilingii var. flavescens
|basionyms=Horkelia flavescens
|family=Rosaceae
|phenology=Flowering summer.
|habitat=Open areas, primarily in conifer woodlands, often on serpentine soil
|elevation=700–2000 m
|distribution=Calif.;Oreg.
|reference=None
|publication title=Novon
|publication year=2007
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V9/V9_431.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Potentilleae
|genus=Horkelia
|section=Horkelia sect. Tridentatae
|species=Horkelia tridentata
|variety=Horkelia tridentata var. flavescens
}}<!--

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