Potentilla cottamii - N. Holmgren
Cottam's Potentilla
Other English Common Names: Pilot Range Cinquefoil
Other Common Names: Pilot Range cinquefoil
Taxonomic Status: Accepted
Related ITIS Name(s): Potentilla cottamii N. Holmgren (TSN 504574)
Unique Identifier: ELEMENT_GLOBAL.2.159639
Element Code: PDROS1B2E0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Rose Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Rosales Rosaceae Potentilla
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Concept Reference
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Concept Reference: 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.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Potentilla cottamii
Conservation Status
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NatureServe Status

Global Status: G1
Global Status Last Reviewed: 26Sep2011
Global Status Last Changed: 03Nov1987
Rounded Global Status: G1 - Critically Imperiled
Reasons: A regional endemic known only from the Pilot Range in Elko County, Nevada, and also from the Raft River, Deep Creek, and Stansbury Mountains in Box Elder, Juab, and Tooele Counties, Utah. Few threats to this species exist given its difficult to access alpine habitat, however, climate change is a probable threat.
Nation: United States
National Status: N1

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Nevada (S1), Utah (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Holmgren (1987) reported P. cottamii as "common" at its type locality near the summit of Pilot Peak, Elko Co., Nevada, elev. 10,400 feet. Holmgren (1987) and Franklin (1994) also provided a good discussion of the questionable record from the Utah portion of the Pilot Range (based on Cottam 4538, BRY). Acc. Franklin (1994), the species is known in the Raft River Mtns. (Box Elder Co.) from three small occurrences over an elevation range from 8700 to 9740 feet, on outcrops of Precambrian rock (Upper Narrows Schist and Elba Quartzite). Dr. Noel Holmgren (NY) has confirmed the identification of two 1996 collections from the Deep Creek Mtns., Juab Co. (Ibapah Azimuth peak, elev. 11,900 ft.; Stone 1927, NY) and the Stansbury Mtns., Tooele Co. (Franklin 8140, NY). Dr. Robert Holland (1998, pers. comm.) did not find any new locations for P. cottamii during a 1996 survey in the mtns. of northeastern Nevada.

Area of Occupancy: 26-500 4-km2 grid cells
Area of Occupancy Comments: The area of occupancy is estimated to fit within 9, 2x2 km grid cells (NatureServe element occurrence data 2011).

Number of Occurrences: 1 - 20
Number of Occurrences Comments: Currently, there are 11 element occurrences, however, many have not been observed in the last 20 years and in some cases even longer than that, and a few are considered historic. With that said, this species' habitat is difficult to access and it is possible that occurrences that have not been observed in a very long time are still extant.

Overall Threat Impact Comments: Apparently with few threats to its habitat given that it's an alpine species, however, livestock grazing in the summer and recreational hunting in the fall take place. These activities while in the vicinity are not a current threat (pers. comm. D. Taylor). It is noted that if wind farms, road construction or minig proposals were conducted in the Sawtooth National Forest that these plans would be closely monitored in terms of their impact on Potentilla cottamii (pers. comm D. Taylor). It is threatened by climate change (Caicco et al. 2008) though given that it's a subalpine species.

Short-term Trend: Relatively Stable (<=10% change)
Short-term Trend Comments: The Revised Forest Plan for the Sawtooth National Forest reports that this species is stable within the park (2003).

Long-term Trend: Unknown

Environmental Specificity: Very narrow. Specialist or community with key requirements scarce.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Holmgren (1987) reported P. cottamii as "common" at its type locality near the summit of Pilot Peak, Elko Co., Nevada, elev. 10,400 feet. Holmgren (1987) and Franklin (1994) also provided a good discussion of the questionable record from the Utah portion of the Pilot Range (based on Cottam 4538, BRY). Acc. Franklin (1994), the species is known in the Raft River Mtns. (Box Elder Co.) from three small occurrences over an elevation range from 8700 to 9740 feet, on outcrops of Precambrian rock (Upper Narrows Schist and Elba Quartzite). Dr. Noel Holmgren (NY) has confirmed the identification of two 1996 collections from the Deep Creek Mtns., Juab Co. (Ibapah Azimuth peak, elev. 11,900 ft.; Stone 1927, NY) and the Stansbury Mtns., Tooele Co. (Franklin 8140, NY). Dr. Robert Holland (1998, pers. comm.) did not find any new locations for P. cottamii during a 1996 survey in the mtns. of northeastern Nevada.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States NV, UT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
NV Elko (32007)
UT Box Elder (49003), Juab (49023), Tooele (49045)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
16 Rush-Tooele Valleys (16020304)+, Southern Great Salt Lake Desert (16020306)+, Northern Great Salt Lake Desert (16020308)+
17 Raft (17040210)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A low, mat-forming, herbaceous perennial from a well developed, much-branched caudex. Stems, 0.5-1.3 dm long, are decumbent or spreading in flower, often prostrate in fruit; leaves mostly basal and 3-foliate. The inflorescence is 1 to 2 flowered.
Technical Description: Mat-forming perennial from a branched caudex clothed with marcescent leaf bases; leaves ternate, green on both sides, villous to glabrescent with non-glandular hairs and finely puberulent with sessile or short-stalked glandular hairs; petals yellow, 304 mm long, styles 0.9-1.2 mm long; blooms late June to early August.
Diagnostic Characteristics: Closely related to P. nivea but readily distinguished by the leaves, which are densely white-tomentose below in P. nivea, and which in P. cottamii are green and villous to glabrescent with non-glandular hairs and finely puberulent with sessile or short-stalked glandular hairs.
Terrestrial Habitat(s): Bare rock/talus/scree, Cliff, Forest - Conifer, Forest/Woodland
Habitat Comments: Cracks and crevices and in crevasses of quartzite outcrops, often shaded from direct midday sunlight. 2200-3200 m elevation.

Potentilla cottamii is restricted to cracks, crevices, and ledges on cliff faces and outcrops of metamorphic rocks. In the Raft River Range the substrate consists of the precambrian Schist of the Upper Narrows and Elba Quartzite. The formations on which it occurs in the Pilot Range are unknown; however, the formations within Utah are similarly metamorphic and are of comparable age, i.e., precambrian and cambrian (Doelling 1980). The known elevational range of Cottam's cinquefoil in the Raft River Mountains is 8,700 - 9,740 feet. In the Pilot Range it is known from the type location at an elevation of 10,400 feet and from Cottam's 7,500 foot suspect collection.

Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: Management should focus on not disturbing the alpine habitat where this species occurs. Activities that would impact the rock outcrop substrate, or surrounding mountainside should be avoided. Trees and shrubs comprising the canopy and other forest layers should not be disturbed or altered given that doing so would change light and humitidy levels in the understory where this species is found. Potentilla cottamii is typically found where some shade is provided in the afternoon suggesting that shade is a requirement. In addition, activities that would alter the snow or snowmelt regime above or around where this species occurs should be avoided as well.
Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 17Mar1999
NatureServe Conservation Status Factors Author: Franklin, Ben, rev. L. Oliver (2011)
Management Information Edition Date: 26Sep2011
Management Information Edition Author: Oliver, L.

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
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  • Atwood, D., J. Holland, R. Bolander, B. Franklin, D. E. House, L. Armstrong, K. Thorne, and L. England. 1991. Utah endangered, threatened, and sensitive plant field guide. Ogden, Utah: U. S. Forest Service, Intermountain Region.

  • Baird, G. I. 1990. Status report on: Astragalus anserinus, Penstemon idahoensis, Potentilla cottamii. Utah Natural Heritage Program, Salt Lake City.

  • Baird, G. I., J. Tuhy, and M. A. Franklin. 1991. Report for 1990 Challenge Cost Share Project, USDI Bureau of Land Management. Target species: Astragalus anserinus Atwood, Goodrich, and Welsh, Penstemon idahoensis Atwood & Welsh, and Potentilla cottamii Holmgren. Utah Natural Heritage Program, Utah Department of Natural Resources. 16 pages + appendices. Unpublished report on file Utah Natural Heritage Program, Salt Lake City, Utah.

  • Caicco, S., F. Edwards, and J. Bair. 2008. Vulnerability of the rarest plants in the Great Basin of Nevada to climate change. Poster at "Effects of Climate Change on Fish, Wildlife, and Habitats in the Arid and Semiarid Southwestern United States: Putting Knowledge and Science into Action" Workshop, Tucson, Arizona, August 19-20, 2008. Online. Available: http://www.fws.gov/southwest/Climatechange/poster%20pdfs/GreatBasinRarePlantPoster_Caiccoetal.pdf

  • Cronquist, A., N.H. Holmgren, and P.K. Holmgren. 1997. Intermountain flora vol. 3, part A. Subclass Rosidae (except Fabales). Bronx: The New York Botanical Garden. 446 pages.

  • Doelling, H.H. 1980. Geology of Box Elder County, Utah (map). Utah Geological and Mineral Survey. Bulletin 115. Plate 2.

  • Ertter, B. 2007. Lectotypifications and new taxa in Potentilla sect.Subviscosae (Rosaceae) in arizona. J. Bot. Res. Inst. Texas 1(1): 47-57.

  • Flora of North America Editorial Committee. 2014b. Flora of North America North of Mexico. Vol. 9. Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York. xxiv + 713 pp.

  • Franklin, M. A. 1994. Survey Report on Potentilla cottamii N. Holmgren. 1993 Challenge Cost Share Project. Utah Natural Heritage Program, Utah Department of Natural Resources and Sawtooth National Forest. Unpublished reoport on file Utah Natural Heritage Program, Salt Lake City, Utah. Pp. 1-10 + appendices.

  • Holland, R.F. 1999. Current knowledge and conservation status of Potentilla cottamii Holmgren (Rosaceae), Cottam cinquefoil, in Nevada. Auburn, CA: Robert F. Holland Ph. D., unpublished report to Nevada Natural Heritage Program, Carson City, and U. S. Fish and Wildlife Service, Reno. DRAFT.

  • Holmgren, N. 1987. Two new species of Potentilla (Rosaceae) from the Intermountain region of western U.S.A. Brittonia 39: 340-344.

  • Holmgren, N. H. 1987. Two new species of Potentilla (Rosaceae) from the Intermountain Region of western U.S.A. Brittonia 39(3): 340-344.

  • Holmgren, N.H. 1987. Two new species of Potentilla (Rosaceae) from the intermountain region of western U.S.A. Brittonia 39(3): 340-344.

  • 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.

  • Nevada Natural Heritage Program. 1986-present. Slide collection files. Carson City.

  • U.S. Forest Service (USFS). 2003a. Final Forest Plan Revision Sawtooth National Forest. Accessed online on Sept. 9, 2011 at: http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5176180.pdf

  • Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins (editors). 1993. A Utah flora. Provo, Utah: Brigham Young University Press.

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