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Montana Field Guide

Montana Field Guides

Thick-leaf Bladderpod - Physaria pachyphylla

Species of Concern

Global Rank: G2G3
State Rank: S2S3
* (see State Rank Reason below)

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

External Links






State Rank Reason (see State Rank above)
See rank details.
  • Details on Status Ranking and Review
    Thick-leaf Bladderpod (Physaria pachyphylla) Conservation Status Review
    Review Date = 11/05/2012
    View State Conservation Rank Criteria
    Population Size

    Score2 - Small: Generally 2,000-10,000 individuals.

    CommentEstimated as precise population data are lacking.

    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

    Area of Occupancy

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

    Environmental Specificity

    Score1-2 - Moderate to High.

    Trends

    ScoreNA - Rank factor not assessed.

    Threats

    Score0-1 - Low to Medium.

    Intrinsic Vulnerability

    Score0-1 - Low to Moderate Vulnerability.

    Raw Conservation Status Score

    Score 8 to 11 total points scored out of a possible 16 (Rarity factors and threats only).

 
General Description
Stems ascending, 2–15 cm from a simple caudex clothed in old leaf bases. Basal leaves spatulate to oblanceolate, 15–50 mm long, entire. Stem leaves spatulate. Vestiture of dense, 5-rayed, stellate hairs. Petals 6–8 mm long. Fruit narrowly elliptic to ovoid, inflated, 3–6 mm high; style 2.5–4 mm long; seeds 4 per locule; pedicels ascending, curved, 3–10 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Endemic to Carbon Co., MT and probably adjacent WY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 6

(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
Stony soil derived from limestone or calcareous sandstone on exposed slopes, ridges; valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Ecological Systems Associated with this Species

References
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Grady, Benjamin R. 2005. Molecules, morphology, and biogeography: an analysis of the phylogeny and taxonomy of the Physaria reediana species complex (Brassicaceae).

    • Grady, B. R., and S. L. O'Kane. 2007. New Species and Combinations in Physaria (Brassicaceae) from Western North America. Novon 17 (2): 182-192.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Thick-leaf Bladderpod — Physaria pachyphylla.  Montana Field Guide.  .  Retrieved on , from