Sphaeromeria simplex - (A. Nels.) Heller
Laramie False Sagebrush
Other English Common Names: Laramie Chicken-sage
Other Common Names: Laramie chickensage
Synonym(s): Artemisia simplex (A. Nelson) S. Garcia, Garnatje, McArthur, Pellicer, S.C. Sand. & Vallès-Xirau ;Tanacetum simplex A. Nels.
Taxonomic Status: Accepted
Related ITIS Name(s): Sphaeromeria simplex (A. Nelson) A. Heller (TSN 38436)
Unique Identifier: ELEMENT_GLOBAL.2.135228
Element Code: PDAST8S080
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Sphaeromeria
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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: Sphaeromeria simplex
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 14Jun2014
Global Status Last Changed: 10Apr1998
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G2 - Imperiled
Reasons: Known only from south-central Wyoming where it is restricted to windswept ridges, rims, buttes, and barren slopes of rocky or gravelly limestone-sandstone. Approximately 22 occurrences are known. Threats include wind energy development and mining.
Nation: United States
National Status: N2

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 Wyoming (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to south-central Wyoming in the Shirley Mountains, Shirley Basin, and western foothills of the Laramie Range in Carbon, Natrona, Converse, and Albany counties (Handley and Heidel 2010).

Area of Occupancy: 26-125 4-km2 grid cells
Area of Occupancy Comments: Occupied area is over 2000 acres (over three square miles) (Handley and Heidel 2010).

Number of Occurrences: 6 - 20
Number of Occurrences Comments: There are 22 extant occurrences of Sphaeromeria simplex based on 2009 surveys (Handley and Heidel 2010).

Population Size Comments: "Population numbers may be determined differently depending on what is interpreted as constituting an individual" (Handley and Heidel 2010). "Based on 2009 surveys and prior work, the total numbers of Sphaeromeria simplex in Wyoming are over 1.6 million plants" (Handley and Heidel 2010). Seven populations number over 10,000 plants (Handley and Heidel 2010).

Overall Threat Impact: High
Overall Threat Impact Comments: Wind energy development is a major threat. The distribution of Sphaeromeria simplex overlaps with the area having the highest potential for wind development and the placement of multiple towers may follow rims and ridges that correspond with species' distribution. (Handley and Heidel 2010). Other threats include mining and extractive energy development, compaction from vehicles, and telecommunication tower construction (Handley and Heidel 2010). The exotic species Malcolmia africana (African Mustard) is expanding at one site (Handley and Heidel 2010).

Short-term Trend Comments: "Trend data are not available for any sites apart from monitoring at the Laramie quarry, and even those have proven impossible to replicate due to different estimation methods" (Handley and Heidel 2010).

Intrinsic Vulnerability Comments: Range restricted, and therefore this taxon would be vulnerable in the event of catastrophic or unforeseen impacts.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to south-central Wyoming in the Shirley Mountains, Shirley Basin, and western foothills of the Laramie Range in Carbon, Natrona, Converse, and Albany counties (Handley and Heidel 2010).

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 WY

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
WY Albany (56001), Carbon (56007), Converse (56009), Natrona (56025)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
10 Pathfinder-Seminoe Reservoirs (10180003)+, Medicine Bow (10180004)+, Little Medicine Bow (10180005)+, Middle North Platte-Casper (10180007)+, Upper Laramie (10180010)+, Lower Laramie (10180011)+, Horse (10180012)+, Cache La Poudre (10190007)+, Crow (10190009)+, Upper Lodgepole (10190015)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Gray-green mat-forming perennial herb with entire to 3-lobed basal leaves and single, yellow, rayless flower heads per stem.
Duration: PERENNIAL
Terrestrial Habitat(s): Bare rock/talus/scree, Desert, Grassland/herbaceous, Shrubland/chaparral
Habitat Comments: Rocky limestone soils in cushion plant communities at about 2300-2600 m elevation. Dry hills and slopes (Flora of North America Editorial Committee 2006). "Sphaeromeria simplex is found in two general vegetation types: sparse steppe usually dominated by Artemisia nova (black sagebrush) or A. tridentata ssp. wyomingensis (Wyoming big sagebrush); and more often in cushion plant communities usually dominated by Phlox muscoides (musk phlox), often co-dominated by Stenotus acaulis (stemless mock goldenweed), Tetraneuris acaulis (stemless four-nerve daisy), or Eremogone hookeri (Hooker's sandwort) (Handley and Heidel 2010).
Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: Notify BLM personnel of locations on BLM lands (Handley and Heidel 2010). Monitor populations using methods of measuring cover devised for mat-forming plants rather than recording individuals (Handley and Heidel 2010).
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: 14Jun2014
NatureServe Conservation Status Factors Author: MARRIOTT, H. (rev. W. Fertig/K. Maybury 6/96), rev. A. Tomaino (2014)
Management Information Edition Date: 14Jun2014
Management Information Edition Author: Tomaino, A.

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
Help
  • Andersen, M.D. and B. Heidel. 2011. HUC-based species range maps. Prepared by Wyoming Natural Diversity Database for use in the pilot WISDOM application operational from inception to yet-to-be-determined date of update of tool.

  • Dorn, R. D. 1992. Vascular Plants of Wyoming, second edition. Mountain West Publishing, Cheyenne, WY.

  • Dorn, R. D. 2001. Vascular Plants of Wyoming, third edition. Mountain West Publishing, Cheyenne, WY.

  • Dorn, R. D. and J. L. Dorn. 1980. Illustrated Guide to Special Interest Vascular Plants of Wyoming. U.S. Fish and Wildlife Service and Bureau of Land Management.

  • Dorn, R.D. 1980. Illustrated guide to special interest vascular plants of Wyoming. U.S. Fish and Wildlife Service and Bur. Land Management, Cheyenne, Wyoming. 67 pp.

  • Dorn, R.D. 1988. Vascular plants of Wyoming. Mountain West Publishing, Cheyenne, WY. 340 pp.

  • Fertig, W. 2000. State Species Abstract: Sphaeromeria simplex. Wyoming Natural Diversity Database. Available on the internet at www.uwyo.edu/wyndd.

  • Fertig, W. 1993. Field survey for Cryptantha subcapitata, Physaria eburniflora, and Sphaeromeria simplex on Bur. of Land Management lands in central Wyoming. Prepared for the Casper District, Bur. Land Management by the Wyoming Natural Diversity Database, Laramie. 116 pp.

  • Fertig, W. 1993. Field survey for Cryptantha subcapitata, Physaria eburniflora, and Sphaeromeria simplex on Bureau of Land Management lands in Central Wyoming. Unpublished report prepared for the Casper District, Bureau of Land Management by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fertig, W. 1993. U. S. Fish and Wildlife Service candidate plant species of Wyoming. Unpublished report prepared for Wyoming Weed and Pest Supervisor's meeting in Cody, WY, March 1993.

  • Fertig, W. 1994. Guide to Sensitive Wyoming plants of US Forest Service Region 2 (with emphasis on plants of Bighorn, Medicine Bow, and Shoshone National Forests). Unpublished report prepared as a handout for the TES species identification workshop conducted for US Forest Service Region 2 in Laramie, WY, 11 May 1994.

  • Fertig, W. 1995. Sensitive plant survey of the proposed Alcova limestone quarry site, Natrona County, Wyoming. Unpublished report prepared for Rissler & McMurry Co., Casper, WY by the Wyoming Natural Diversity Database, Laramie, Wyoming.

  • Fertig, W. and G. Jones. 1997. Plant species of special concern and plant associations of the Shirley Mountains ecosystem Carbon County, Wyoming. Unpublished report prepared for the Bureau of Land Management Wyoming State Office by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fertig, W. and R. Thurston. 2003. Modeling the potential distribution of BLM Sensitive and USFWS Threatened and Endangered plant species in Wyoming. Unpublished report prepared for the Bureau of Land Management Wyoming State Office by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fertig, W., C. Refsdal, and J. Whipple. 1994. Wyoming Rare Plant Field Guide. Wyoming Rare Plant Technical Committee, Cheyenne, WY.

  • Fertig, W., C. Refsdal, and J. Whipple. 1994. Wyoming rare plant field guide. Wyoming Rare Plant Technical Committee, Cheyenne. No pagination.

  • Flora of North America Editorial Committee. 2006a. Flora of North America North of Mexico. Vol. 19. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York. xxiv + 579 pp.

  • Garcia, S., T. Garnatje, E.D. McArthur, J. Pellicer, S.C. Sanderson, and J. Vallès. 2011. Taxonomic and nomenclatural rearrangements in Artemisia subgen. Tridentatae, including a redefinition of Sphaeromeria (Asteraceae, Anthemideae). Western North American Naturalist. 71(2):158-163.

  • Handley, J. and B. Heidel. 2010. Status of Sphaeromeria simplex (Laramie false sagebrush), south-central Wyoming. Report prepared for the USDI Bureau of Land Management - Wyoming State Office and Rawlins Field Office by the Wyoming Natural Diversity Database - University of Wyoming, Laramie, Wyoming. [http://www.uwyo.edu/wyndd/_files/docs/reports/wynddreports/u10han01wyus.pdf]

  • Heidel, B. and J. Handley. 2007. Monitoring Laramie false sagebrush (Sphaeromeria simplex) on the Mountain Cement Easement, Albany County, Wyoming. Prepared for The Nature Conservancy - Wyoming Field Office and Mountain Cement. Wyoming Natural Diversity Database, Laramie, WY.

  • Holmgren, A. H., L. M. Shultz, and T. K. Lowrey. 1976. Sphaeromeria, a genus closer to Artemisia than to Tanacetum (Asteraceae:Anthemideae). Brittonia 28:255-262.

  • Kartesz, J. T. 1991. Synonym names from 1991 checklist, as extracted by Larry Morse, TNC, June 1991.

  • 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.

  • Keenlyne, K.D. 1977. Special Report Number 3: Endangered or Threatened Species in Wyoming. US Fish and Wildlife Service, Casper, WY. 48 pp.

  • Locklear, J. 2010. March 4 last update. National Collection Plant Profile: Sphaeromeria simplex. Center for Plant Conservation. Online. Available: http://www.centerforplantconservation.org/Collection/CPC_ViewProfile.asp?CPCNum=4071 (Accessed 2014).

  • Lowrey, T. K. and L. M. Shultz. 2006. Sphaeromeria. Pages 499-502 in Flora of North America Editorial Committee, editor. Flora of North America North of Mexico. Vol. 19. Magnoliophyta: Asteridae (in part): Asteraceae part 1. Oxford University Press, New York, NY.

  • Mills, S. and M. Neighbours. 1995. Intensive data gathering project (fine-filter analysis) for occurrences of rare, threatened, endangered and sensitive species in sections M331H and M331I, north central highlands and northern parks and ranges, in Wyoming. Unpublished report prepared for Medicine Bow National Forest by the Wyoming Natural Diversity Database, Laramie, WY. 294 pp.

  • Mountain West Environmental Services. 1996. Inventory and status survey for Sphaeromeria simplex. Unpublished report prepared for the Bureau of Land Management by Mountain West Environmental Services, Cheyenne, WY.

  • Neighbours, M. and H. Marriott. 1991. Candidate sensitive plant species, Platte River Resource Area, Bureau of Land Management. Prepared for the BLM by the Wyoming Natural Diversity Database, Laramie, WY.

  • Nelson, A. 1899. New plants from Wyoming X. Bulletin Torrey Botanical Club 26: 480-487.

  • Roderick, A. J., B. E. Nelson, and R. L. Hartman. 1999. Final report on the general floristic inventory of the Upper North Platte and Laramie River drainages. Unpublished report prepared for the Bureau of Land Management Rawlins and Casper Districts by the Rocky Mountain Herbarium, University of Wyoming, Laramie, WY.

  • Taylor, A. R. 2000. The vascular flora of the Upper North Platte River drainage, Wyoming. Masters Thesis. Department of Botany, University of Wyoming, Laramie, WY.

  • U.S. Forest Service (USFS). 2002. R2 Individual Species Recommendations: Sphaeromeria simplex. [http://www.fs.fed.us/r2/projects/scp/evalrationale/rationales/dicots/sphaeromeriasimplex.pdf]

  • Whiskey Basin Consultants. 1984. Inventory of SPHAEROMERIA SIMPLEX, Albany County, Wyoming. Unpublished report prepared for The Nature Conservancy.

  • Winner, C. 1993. In plain view. Wyoming Wildlife 57(11): 4-9.

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