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Montana Field Guide

Montana Field Guides

Little Ricegrass - Oryzopsis exigua
Other Names:  Piptatherum exiguum

Image Copyright and Usage Information
Native Species

Global Rank: G4G5
State Rank: S4
C-value: 5


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Stems 15–35 cm. Leaves: blades 0.5–1.5 mm wide, scabrous, ligules 1–3 mm long. Inflorescence a raceme or narrow panicle 3–7 cm long. Spikelets 3.5–4.5 mm long. Lemmas mostly hairless, with a deciduous bent awn 4–6 mm long (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions

Native
 


Range Comments
Throughout much of western North America (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 41

(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
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • 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.
    • Forcella, F. 1977. Flora, chorology, biomass and productivity of the Pinus albicaulis-Vaccinium scoparium association. M.S. Thesis. Bozeman, MT: Montana State University. 99 pp.
    • Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. Nevada, Reno. 3 volumes.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
  • Web Search Engines for Articles on "Little Ricegrass"
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Citation for data on this website:
Little Ricegrass — Oryzopsis exigua.  Montana Field Guide.  .  Retrieved on , from