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Montana Field Guides

Side-oats Grama - Bouteloua curtipendula

Native Species

Global Rank: G5
State Rank: S4S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

External Links






 
General Description
Perennial bunchgrass with scaly rhizomes. Stems 4–7 dm long. Leaves: blades 2–6 mm wide, somewhat curled. Inflorescence of 20–50 secund lateral downward-oriented spikes, each 1–2 cm long and with 3–6 spikelets. Spikelets 4–5 mm long. Lemmas essentially hairless, awn-tipped, these falling with the lateral spike of spikelets; rudimentary florets 1 (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range

Year-round
 


Range Comments
Mexico north CA to MT and Canadian prairies to much of the eastern USA, although much less common east of the Mississippi River (Kartesz in prep. 2012).

Observations in Montana Natural Heritage Program Database
Number of Observations: 369

(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 rocky slopes and open understory often where Yucca glauca is common (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Additional ReferencesLegend:   View Online Publication
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    • 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.
    • Anderson, N.L. 1962. Grasshopper-vegetation relationships on Montana grasslands. Ph.D Dissertation. Bozeman, Montana: Montana State University. 73 p.
    • Egan, J.L. 1957. Some relationships between mule deer and alfalfa production in Powder River County, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 34 p.
    • Fritzen, D.E. 1995. Ecology and behavior of Mule Deer on the Rosebud Coal Mine, Montana. Ph.D. Dissertation. Bozeman, MT: Montana State University. 143 p.
    • Hanson, H. C. 1955. Characteristics of the Stipa comata - Bouteloua gracilis - Bouteloua curtipendula association in northern Colorado. Ecology 36(2):269-280.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Murphy, C.Y. 2016. Chemical control and disease reservoir studies of the wheat curl mite (Aceria tosichella Keifer) vector to wheat streak mosaic virus. M.Sc. Thesis. Bozeman, MT: Montana State University. 75 p.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
    • Scow, K.L. 1981. Ecological distribution of small mammals at Sarpy Creek, Montana, with special consideration of the Deer Mouse, Peromyscus maniculatus. M.Sc. Thesis. Bozeman, Montana: Montana State University. 73 p.
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Citation for data on this website:
Side-oats Grama — Bouteloua curtipendula.  Montana Field Guide.  .  Retrieved on , from