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Montana Field Guide

Montana Field Guides

Mat Muhly - Muhlenbergia richardsonis

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Global Rank: G5
State Rank: S4S5
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links

State Rank Reason (see State Rank above)
See rank details.
  • Details on Status Ranking and Review
    Mat Muhly (Muhlenbergia richardsonis) Conservation Status Review
    Review Date = 02/21/2013
    View State Conservation Rank Criteria
    Population Size

    Score0 - Large: Generally >100,000 individuals.

    Range Extent

    Score0 - Widespread species within Montana (occurs in 5% or more of the state or generally occurring in 6 or more sub-basins.) as well as outside of Montana.

    Area of Occupancy

    Score0 - High: Occurs in >25 Subwatersheds (6th Code HUC’s).

    Environmental Specificity

    Score0 - Low: Species is a generalist that occurs in a variety of habitats and/or is tolerant of disturbed or degraded habitats (C -Values of 1-4).

    Trends

    Score0-1 - Stable to Minor Declines:

    Threats

    Score0-1 - Low to Medium.

    Intrinsic Vulnerability

    Score0 - Low Vulnerability: Species does not have any unusual or specific life history or biological attributes or limted reproductive potential which makes it susceptible to extirpation from stochastic events or other adverse impacts to its habitat and thus slow to recover.

    Raw Conservation Status Score

    Score 0 to 2 total points scored out of a possible 19.

 
General Description
Perennial with well-developed rhizomes. Stems decumbent and often mat-forming, 5–25 cm tall, rough with small bumps just below the nodes, bases slender just like the more distal portions of the stem. Leaves: blades mostly 1–2 mm wide, ligule about 1–2 mm long. Inflorescence a narrow contracted panicle 2–12 cm long. Spikelets 2–3 mm long. Lemmas not hairy, awn-tipped, callus hairs short to absent (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout western North America and extending eastward across southern Canada and the northern U.S. (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 77

(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 dry to moist sites often on well drained and somewhat disturbed soils from low to montane elevations (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Mat Muhly — Muhlenbergia richardsonis.  Montana Field Guide.  .  Retrieved on , from