# Potentilla breweri > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Potentilla_breweri > Markdown URL: https://mediated.wiki/source/Potentilla_breweri.md > Source: https://en.wikipedia.org/wiki/Potentilla_breweri > Source revision: 1352978323 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{Short description|Species of flowering plant}} {{Speciesbox |image = Potentilla_breweri,_cirque_site,_side.png |image_alt = ''P. breweri'' in the wild |image2 = Potentilla_breveri_04.jpg |image2_alt = Close-up view of ''P. breweri'' leaves |status = G4 |status_system = TNC |status_ref = NatureServe Explorer: https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.1132504/Potentilla_breweri |genus = Potentilla |species = breweri |authority = Egger & S. Malaby |synonyms = * ''[Potentilla drummondii](/source/Potentilla_drummondii)'' subsp. ''breweri'' {{au|(S. Watson) Ertter}} * ''P. drummondii'' var. ''breweri'' {{au|(S. Watson) N. H. Holmgren}} * ''P. plattensis'' var. ''leucophylla'' {{au|Greene}} |synonyms_ref = {{cite book |last=Ertter |first=Barbara |date= 2015 |editor=Flora of North America Editorial Committee |title=Flora of North America North of Mexico |volume=9 |publisher= Oxford University Press |chapter=''Potentilla breweri'' |isbn= 978-0195340297 |url= http://floranorthamerica.org/Potentilla_breweri |url-status=live |archive-url= https://web.archive.org/web/20231024231928/http://floranorthamerica.org/Potentilla_breweri |archive-date=2023-10-24 |access-date=2023-10-24 }} }} '''''Potentilla breweri''''' is a species of ''[Potentilla](/source/Potentilla)'' known by the common name '''Brewer's cinquefoil'''. It is native to western North America, with populations scattered from southern Washington to south-central California and from the Pacific cordillera inland to the mountains of the [Great Basin](/source/Great_Basin). Its greatest population density occurs in the [Sierra Nevada](/source/Sierra_Nevada_(United_States)), the high [Cascade Range](/source/Cascade_Range)s, and [Steens Mountain](/source/Steens_Mountain). ==Description== ''P. breweri'' is a [herbaceous](/source/Herbaceous_plant) perennial or near-subshrub growing from a sturdy, branched [caudex](/source/caudex). Its leaves are pinnately compound and covered in soft, tangled, woolly [hair](/source/Trichomes)s, giving them a more or less silver-blue color. The exact shape of the leaf and the degree of hairiness can vary substantially between early-season leaves and those produced later in the year. The inflorescences are [cymose](/source/Cyme_(botany)) and usually bear 2-15 flowers. Like most ''Potentilla'' species, its flowers have five bright yellow [petal](/source/petal)s, 15 [stamen](/source/stamen)s, and numerous separate [pistil](/source/pistil)s, and are adapted for generalist pollination. Each flower produces a cluster of [achene](/source/achene)s if successfully pollinated. It is a taxonomically difficult species that appears to hybridize frequently with other ''Potentilla'' spp. The boundaries of the resulting [species complex](/source/species_complex) are poorly-understood. ==Habitat and ecology== The plants are found in high-montane to subalpine meadow openings. They prefer seasonally-wet habitats with little competition for sunlight, such as rocky meadows and rock crevices, and are often found near lakes and streams. They range in altitude from {{convert|1500|to|3600|m}}.{{cite book|title=The Jepson manual: vascular plants of California|chapter= ''Potentilla''|last= Ertter|first= Barbara|page= 1191-1195|editor-last1=Baldwin |editor-first1= Bruce B.|editor-last2= Goldman|editor-first2= Douglas H.|editor-last3= Keil|editor-first3= David J.|editor-last4= Patterson|editor-first4= Robert|editor-last5= Rosatti|editor-first5= Thomas J.|editor-last6= Wilken|editor-first6= Dieter H.|publisher= University of California Press|edition= 2nd|year= 2012}} ==History== The ''P. breweri'' complex (''P. breweri, [P. drummondii](/source/Potentilla_drummondii),'' and ''[P. bruceae](/source/Potentilla_bruceae))'' was one of the case studies used in [Clausen](/source/Jens_Clausen), [Keck](/source/David_D._Keck), and [Hiesey](/source/William_Hiesey)'s [biosystematic](/source/systematics) work.{{cite book|last= Clausen|first= Jens|last2= Keck|first2= D.D.|last3=Hiesey |first3= William|year=1941|title=Experimental Studies on the Nature of Species|volume=I. Effect of Varied Environments on Western North American Plants|publisher=Carnegie Institute of Washington|pages=452|isbn=9780608062204}} ==References== {{Reflist}} ==External links== *{{commons category-inline|Potentilla drummondii subsp. breweri}} * [https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=39687 Jepson eFlora treatment] * [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250100311 Flora of North America treatment] ([http://floranorthamerica.org/Potentilla_breweri alternate site]) * [https://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Potentilla+breweri CalPhotos image gallery] {{Taxonbar|from=Q24192464}} breweri Category:Flora of California Category:Flora of Oregon Category:Flora of Nevada Category:Flora of Washington (state) Category:Flora of the Cascade Range Category:Flora of the Sierra Nevada (United States) Category:Flora of the Great Basin --- Adapted from the Wikipedia article [Potentilla breweri](https://en.wikipedia.org/wiki/Potentilla_breweri) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Potentilla_breweri?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.