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Montana Field Guide

Montana Field Guides

Blue Gramma - Bouteloua gracilis


Global Rank: G5
State Rank: S5

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

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General Description
Perennial bunchgrass or sodgrass. Stems 20–50 cm long. Leaves: blades 1–2 mm wide, often curled. Inflorescence of 1 to 4 secund lateral divergent spikes, each 2–4.5 cm long and with 50 to 80 spikelets, each lateral rachis terminated by a spikelet, Spikelets 4–5.5 mm long, second glume essentially hairless or with clear gland-based hairs. Lemmas essentially hairless, short-awned, these disarticulating from the spikelet; rudimentary florets 1, densely hairy (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout much of N. America except at extreme northern latitudes and in much of the southeast (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 250

(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

References
  • Additional ReferencesLegend:   View Online Publication
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    • Hanson, H. C. 1955. Characteristics of the Stipa comata - Bouteloua gracilis - Bouteloua curtipendula<\i> association in northern Colorado. Ecology 36(2):269-280.
    • Johnson, C. 1985. Simulated effects of supplemental watering on two grasslands, Agropyron smithii and Bouteloua gracilis. M.S. thesis, Montana State University, Bozeman. 79 pp.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • McClelland, J.D. 1983. Growth response of Agropyron smithii and Bouteloua gracilis to simulated grazing and water treatments. M.S. thesis. Montana State University, Bozeman. 55 pp.
    • Morris, M. S. 1941. The status of blue grama grass, Bouteloua gracilis, in western Montana. Proc. Mont. Acad. Sci. 2:38.
    • Norem, W.L. 1940. Contrasting density changes of Poa secunda and Bouteloua gracilis in eastern Montana through seven years, including the extreme droughts of 1934 and 1936. Northwest Science 14:92.
    • Swingle, K. 1986. Effect of supplemental water on morphology, density, survival and population dynamics of Agropyron smithii and Bouteloua gracilis. M.S. thesis, Montana State University, Bozeman. 101 pp.
    • Weaver, T. 1983. Ecological effects of weather modification in Bouteloua gracilis Agropyron smithii grasslands. Pp. 65-280 in L. Holman and G. Knudsen, comps., State of Montana activities in the high plains cooperative project 1981-1983. Montana Dept. of Natural Res. and Conserv., Helena. 172 pp.
    • Weaver, T., et ale 1981. Ecological effects of spring, summer, and fall water supplements on Agropyron smithii and Bouteloua gracilis ecosystems. Pp. 73-81 in G. Knutsen and R. Moy, comp., State of Montana activities in the High Plains Cooperative Program 1975-1980. Montana Dept. Nat. Res. and Conserv., Helena. 287 pp.
    • Welker, J. 1982. Relative digestibility of Agropyron smithii and Bouteloua gracilis grown under six water regimes. M.S. thesis, Montana State University, Bozeman. 44 pp.
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Citation for data on this website:
Blue Gramma — Bouteloua gracilis.  Montana Field Guide.  .  Retrieved on , from