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Mat Muhly - Muhlenbergia richardsonis
Native Species
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
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
Montana Range
Year-round
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).
Observations in Montana Natural Heritage Program Database
Number of Observations: 138
(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
- Additional ReferencesLegend:
View Online Publication
Do you know of a citation we're missing?
Ament, R.J. 1995. Pioneer Plant Communities Five Years After the 1988 Yellowstone Fires. M.Sc. Thesis. Bozeman, MT: Montana State University. 216 p.- Anderson, N.L. 1951. Field studies on the biology of range grasshoppers of southeastern Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 96 p.
- Johnson, T. W. 1982. An analysis of pack and saddle stock grazing areas in the Bob Marshall Wilderness. M.Sc.Thesis. Bozeman, MT: Montana State University. 105 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.
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