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Potentilla breweri

S. Wats.

Brewer's Cinquefoil

G4Apparently Secure (G4G5) Found in 31 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
Medium - lowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.1132504
Element CodePDROS1B570
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderRosales
FamilyRosaceae
GenusPotentilla
Synonyms
Potentilla drummondii ssp. breweri(S. Wats.) Ertter
Concept Reference
Flora of North America Editorial Committee (FNA). 2014b. Flora of North America north of Mexico. Vol. 9. Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York. xxiv + 713 pp.
Taxonomic Comments
Flora of North America Editorial Committee (2014, vol. 9) treats Potentilla breweri as a species, distinct from P. drummondii and P. bruceae. In contrast, Kartesz (1994) recognized P. breweri (including P. drummondii ssp. bruceae), and P. drummondii. Kartesz (1999) recognized P. drummondii with three subspecies: ssp. breweri, ssp. bruceae, and ssp. drummondii.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2021-10-01
Change Date2021-10-01
Edition Date2021-10-01
Edition AuthorsRusso, Mary (1989), rev. A. Tomaino (2021)
Threat ImpactMedium - low
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Potentilla breweri is known from central Washington through Oregon to California and Nevada. It is most common in the High Sierra Nevada in California.
Range Extent Comments
Potentilla breweri is known from the Cascade Range in central Washington through Oregon, to the High Sierra Nevada in California where it is most common, and from disjunct populations in the Ruby and Snake ranges in Nevada (Baldwin et al. 2012, Flora of North America Editorial Committee 2014, W. Fertig, pers. comm., 2021). Reports from Utah are misidentifications (Flora of North America Editorial Committee 2014).
Occurrences Comments
There are two extant occurrences in Washington (Fertig and Kleinknecht 2020, NatureServe 2021). The number of occurrences in Oregon, California, and Nevada is not known but based on herbarium collections is over 80 (CPNWH 2021, CCH 2021, SEINet 2021).
Threat Impact Comments
Threats in Washington include grazing and trampling (Fertig and Kleinknecht 2020).
Ecology & Habitat

Habitat

Habitat is rocky meadows, seasonally moist flats, rock crevices, often near streams and lakes (Flora of North America Editorial Committee 2014).
Terrestrial Habitats
Grassland/herbaceousAlpine
Palustrine Habitats
Riparian
Other Nations (1)
United StatesN4
ProvinceRankNative
NevadaS2Yes
CaliforniaSNRYes
OregonSNRYes
WashingtonS1Yes
Threat Assessments
ThreatScopeSeverityTiming
2 - Agriculture & aquacultureRestricted (11-30%)Serious - moderate—
2.3 - Livestock farming & ranchingRestricted (11-30%)Serious - moderate—
6 - Human intrusions & disturbanceRestricted (11-30%)Moderate - slight—
6.1 - Recreational activitiesRestricted (11-30%)Moderate - slight—
8 - Invasive & other problematic species, genes & diseasesRestricted (11-30%)Moderate - slight—

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (31)
California (21)
AreaForestAcres
Bear Camp FlatModoc National Forest2,471
Coyote SoutheastInyo National Forest53,159
DardanellesEldorado National Forest8,110
EagleStanislaus National Forest16,116
Hall Natural AreaInyo National Forest5,236
Hoover - Mt.olsenHumboldt-Toiyabe National Forest624
Hoover - Virginia LksHumboldt-Toiyabe National Forest5,050
Horse Mdw.Inyo National Forest5,687
Log Cabin SaddlebagInyo National Forest15,165
Long MeadowHumboldt-Toiyabe National Forest11,967
Mt. JacksonHumboldt-Toiyabe National Forest20,721
Mt. EddyShasta-Trinity National Forest7,232
Mt. OlsenInyo National Forest2,161
NessieInyo National Forest830
Sweetwater (CA)Humboldt-Toiyabe National Forest19,241
Table Mtn.Inyo National Forest4,215
TinemahaInyo National Forest27,060
Tioga LakeInyo National Forest829
Tragedy - Elephants BackEldorado National Forest20,866
Wheeler RidgeInyo National Forest15,744
Wild Horse Mtn. (CA)Humboldt-Toiyabe National Forest28,822
Nevada (1)
AreaForestAcres
Rose - GalenaHumboldt-Toiyabe National Forest3,711
Oregon (6)
AreaForestAcres
Bend WatershedDeschutes National Forest14,829
Frog CampWillamette National Forest491
HuckleberryWillamette National Forest793
Sky Lakes AWinema National Forest3,940
Sky Lakes BWinema National Forest9,615
West - South BachelorDeschutes National Forest25,994
Washington (3)
AreaForestAcres
Devils GulchWenatchee National Forest24,419
Lion RockWenatchee National Forest4,692
NaneumWenatchee National Forest4,508
References (8)
  1. Baldwin, B. G., D. H. Goldman, D. J. Keil, R. Patterson, T. J. Rosatti, and D. H. Wilken, eds. 2012. The Jepson manual: vascular plants of California. 2nd edition. University of California Press, Berkeley, CA. 1568 pp.
  2. Fertig, Walter. Personal communication. State botanist. Washington Natural Heritage Program, Olympia, WA.
  3. Fertig, W., and J. Kleinknecht. 2020. Conservation status and protection needs of priority plant species in the Columbia Plateau and East Cascades ecoregions Prepared for U.S. Fish and Wildlife Service, Region 1. Natural Heritage Report 2020-02. Prepared January 27, 2020. Washington Natural Heritage Program Washington Department of Natural Resources Olympia, Washington. 173 pp. [https://www.dnr.wa.gov/publications/amp_nh_priority_species_cp_ec_ecoregions.pdf]
  4. Flora of North America Editorial Committee (FNA). 2014b. Flora of North America north of Mexico. Vol. 9. Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York. xxiv + 713 pp.
  5. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  6. Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
  7. NatureServe. 2021. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  8. Southwest Environmental Information Network (SEINet). 2021. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2021).