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Montana Field Guide

Montana Field Guides

Green Prince's plume - Stanleya viridiflora

Potential Species of Concern

Global Rank: G4
State Rank: S3S4
* (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
    Green Prince's plume (Stanleya viridiflora) Conservation Status Review
    Review Date = 10/17/2012
    View State Conservation Rank Criteria
    Population Size

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

    Range Extent

    Score1 - Peripheral, Disjunct or Sporadic Distribution in MT: Widespread species that is peripheral, disjunct or sporadically distributed within MT such that it occurs in <5% of the state (<7,500 sq. miles or the combined area of Beaverhead and Ravalli Counties) or is restricted to 4-5 sub-basins.

    Area of Occupancy

    Score1 - Moderate: Generally occurring in 11-25 Subwatersheds (6th Code HUC’s).

    Environmental Specificity

    Score1 - Moderate: Species is restricted to a specific habitat that is more widely distributed or to several restricted habitats and is typically dependent upon relatively unaltered, good-quality habitat (C Values of 5-7).

    Trends

    Score0-1 - Stable to Minor Declines:

    CommentTrend are undocumented, though populations are likely stable or experiencing only minor declines.

    Threats

    Score0-1 - Low to Medium.

    Intrinsic Vulnerability

    Score0-1 - Low to Moderate Vulnerability.

    Raw Conservation Status Score

    Score 4 to 7 total points scored out of a possible 19.

 
General Description
Glabrous and glaucous, biennial or monocarpic perennial from a simple caudex covered in old leaf bases. Stems erect, simple or branched above, 50–80 cm. Leaves basal and cauline; basal leaves petiolate, the blade 5–13 cm long, oblanceolate, entire or with a few basal teeth or lobes; stem leaves oblanceolate, sessile, auriculate. Petals pale yellow, brown at the base, 13–21 mm long, glabrous. Fruit downcurved, 3–6 cm long, constricted between seeds; the stipe 10–20 mm long; pedicels spreading, 4–8 mm long. Stony, usually calcareous soil of sparsely vegetated slopes in steppe, woodlands; montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Collected in Beaverhead and Madison counties; ID, MT south to CA, NV, UT and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 17

(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, stony soil of steep slopes and outcrops in the valley, foothill and montane zones. Typically associated with calcareous substrates.

References
  • Additional ReferencesLegend:   View Online Publication
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    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Rollins, R. C. 1993. The Cruciferae of Continental North America: systematics of the mustard family from the Arctic to Panama. Stanford University Press, Stanford, California. 976 pp.
    • Vanderhorst, J.P. and P. Lesica. 1994. Sensitive plant survey in the Tendoy Mountains, Beaverhead County, Montana. Unpublished report to the Bureau of Land Management, Butte District. Montana Natural Heritage Program, Helena, MT. 59 pp. plus appendices.
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Citation for data on this website:
Green Prince's plume — Stanleya viridiflora.  Montana Field Guide.  .  Retrieved on , from