Search Field Guide
Advanced Search
Montana Field Guide

Montana Field Guides

Western Wheatgrass - Elymus smithii
Other Names:  Agropyron smithii, Pascopyrum smithii


Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 3

External Links






 
General Description
Rhizomatous. Stems mostly hairless and usually glaucous, 35–80 cm; blades 2–5 mm wide, often stiff and inrolled, sheaths and collar often hairless. Inflorescence 3–15 cm long, rachis continuous, the internodes <10 mm long. Spikelets (sometimes 2 per node) 10–29 mm long, appressed to the main rachis, florets mostly 4 to 9 per spikelet, glumes shorter than to as long as florets, rigid and gradually long-tapering from the base to a narrow sharp tip (the acuminate tip is often slightly curved). Lemmas awn-tipped or with an awn up to 5 (–10) mm (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 in 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: 323

(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
    Do you know of a citation we're missing?
    • Allred, B. W. 1941. Grasshoppers and their effect on sagebrush on the Little Powder River in Wyoming and Montana. Ecology 22:387-392.
    • 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.
    • Jorgensen, H.E. 1970. Ecological aspects of the life history of Agropyron smithii in central Montana, with related effects of selective herbicide treatments of rangeland. Ph.D. Dissertation. Montana State University, Bozeman.
    • 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.
    • Newbauer, J. 1985. Growth response of Agropyron smithii invididuals to increased summer water availability.
    • 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.
    • Tirmenstein, D. 1999b. Pascopyrum smithii. In: Fire Effects Information System, [Online}. U. S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer).
    • 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.
  • Web Search Engines for Articles on "Western Wheatgrass"
  • Additional Sources of Information Related to "Monocots"
Login Logout
Citation for data on this website:
Western Wheatgrass — Elymus smithii.  Montana Field Guide.  .  Retrieved on , from