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Montana Animal Field Guide

Montana Field Guides

Shoshonea - Shoshonea pulvinata

Species of Concern

Global Rank: G2G3
State Rank: S2
* (see State Rank Reason below)

Agency Status
USFWS:
USFS: SENSITIVE
BLM: SENSITIVE
MNPS Threat Rank: 3
C-value:

External Links






State Rank Reason (see State Rank above)
Known in Montana only from the Pryor Mountains and the eastern slope of the Beartooth Plateau. Occurrences are located mostly on federal lands.
  • Details on Status Ranking and Review
    Shoshonea (Shoshonea pulvinata) Conservation Status Review
    Review Date = 06/27/2012
    Population Size

    Score1 - Moderate: Generally 10,000-100,000 individuals.

    CommentAvailable data supports an estimated population size of slightly greater than 10,000 plants.

    Range Extent

    Score3 - Local Endemic or Very Small Montana Range: Generally restricted to an area <10,000 sq. miles (equivalent to the combined area of Phillips and Valley Counties) or <6 Sub-basins (4th code watersheds) Range-wide OR limited to one Sub-basin in Montana

    Comment

    Area of Occupancy

    Score2 - Low: Generally occurring in 4-10 Subwatersheds (6th Code HUC’s).

    Comment

    Trends

    Score0-2 - Stable to Moderate Declines:

    CommentMonitoring data from the 1990's generally showed stable to slightly declining trends, though increased mortality may have occurred since as a result of drought conditions.

    Threats

    Score0-1 - Low to Medium.

    Comment

    Intrinsic Vulnerability

    Score1-2 - Moderate to High Vulnerability.

    Comment

    Environmental Specificity

    Score1-2 - Moderate to High.

    Comment

    Raw Conservation Status Score

    Score 8 to 13 total points scored out of a possible 19.

 
General Description
Shoshonea is a low, mat-forming, herbaceous, long-lived perennial with a woody taproot and branching underground stems. The aboveground stems are 2-8 cm in length and usually clothed at their bases with remnants of the previous year's leaf sheaths. Leaves are ca. 5-25 mm long, 3-20 mm wide, and have a petiole that is ca. half their length. The leaf blades are oddly pinnate with 5-11 divisions and oblong to oval in outline. The leaf petioles are swollen and papery at their bases, and herbage is glabrous to somewhat roughened. The smallest flower clusters consist of a number of stalked flowers attached at a single point (simple umbels); these clusters are, in turn, stalked and attached at the top of the ovary. The fruits are approximately 2-4 mm long, slightly roughened to the touch, and without wings.

Phenology
Flowering late June-July.

Diagnostic Characteristics
In open habitats, this species forms dense cushions and cannot be mistaken for any other member of the Parsley family in our area. In partially shaded sites, the cushion-forming habit is not so strongly expressed, and Shoshonea can be mistaken for species of Musineon, Cymopterus and Lomatium. The sessile flowers and persistent leaf bases are diagnostic. A technical key should be consulted to separate these groups.

Species Occurrences
Number of Species Occurrences: 13
*Not all Species Occurrences are mapped

 


Range Comments
Regional endemic to the Absaroka and Owl Creek Mountains of northwest Wyoming and adjacent Montana.

Summary of Observations Submitted for Montana
Number of Observations: 37

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Open, exposed limestone outcrops, ridgetops, and canyon rims, in thin rocky soils.
Predicted Suitable Habitat Model

This species has a Predicted Suitable Habit Model available.

To learn how these Models were created see http://mtnhp.org/models

Ecological Systems Associated with this Species

References
  • Additional ReferencesLegend:   View Online Publication
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    • Clark, T.W., H.A. Harvey, R.D. Dorn, D.L. Genter, and C. Groves (eds). 1989. Rare, sensitive, and threatened species of the greater Yellowstone ecosystem. Northern Rockies Conservation Cooperative, Montana Natural Heritage Program, The Nature Conservancy, and Mountain West Environmental Services. 153 p.
    • Dorn, R.D. 1989. Report on the status of Shoshonea pulvinata, a candidate threatened species. Unpublished report. Mountain West Environmental Services, Cheyenne, WY. 32 pp.
    • Evert, E.F. and L. Constance. 1982. Shoshonea pulvinata, a new genus and species of Umbelliferae from Wyoming. Systematic Botany. 7:471-475.
    • Fertig, W. 1992. Sensitive plant species surveys and revised species checklist, Grass Creek Resource area, Bureau of Land Management. Wyoming Natural Diversity Database, The Nature Conservancy. 84 pp.
    • Heidel, B. 2001. Monitoring Shoshonea pulvinata in the Pryor and Beartooth Mountains, Carbon County, MT. 1999 trend report to Bureau of Land Management, MT. Montana Natural Heritage Program, Helena. 11 pp. plus appendices.
    • Lesica, P. 1992. Monitoring populations of Shoshonea pulvinata in the Pryor and Beartooth Mountains, Carbon County, Montana. Unpublished report prepared by the Montana Natural Heritage Program, Helena, MT.
    • Lesica, P. 1993. Monitoring populations of Shoshonea pulvinata in the Pryor and Beartooth mountains, Carbon County, Montana: 1991-1993 baseline report. Unpublished report prepared for the Bureau of Land Management, Miles City District. Montana Natural Heritage Program, Helena. 6 pp. plus appendices.
    • Lesica, P. and P.L. Achuff. 1991. Monitoring populations of Shoshonea pulvinata<\i> in the Pryor and Beartooth Mountains: 1991 establishment report. Unpublished report to the Montana State Office, Bureau of Land Management. Montana Natural Heritage Program, Helena, MT. 26 pp.
    • Lesica, P., K. Lackschewitz, J. Pierce, S. Gregory and M. O'Brien. 1986. Noteworthy collections: Montana. Madrono 33:310-312.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Lyman, J.C. 2005. Shoshonea pulvinata Evert & Constance (Shoshone carrot): a technical conservation assessment. USDA Forest Service, Rocky Mountain Region.
    • Marriott, H. 1992. Field survey for Claytonia lanceolata var. Flava, Cryptantha subcapitata and Shoshonea pulvinata in the Owl Creek and southeast Absaroka Mountains, Wyoming. [report prepared for BLM, Grass Creek Resource Area]. Wyoming Natural Diversity Database, The Nature Conservancy. 28 pp.
    • Shelly, J.S. 1988. Report on the conservation status of Shoshonea pulvinata, a candidate Threatened species. Unpublished report prepared for the U.S. Fish and Wildlife Service. 36 pp.
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Citation for data on this website:
Shoshonea — Shoshonea pulvinata.  Montana Field Guide.  Montana Natural Heritage Program.  Retrieved on August 26, 2016, from http://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PDAPI2G010