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Montana Field Guide

Montana Field Guides

Bearded Flatsedge - Cyperus squarrosus
Other Names:  Cyperus aristatus

Native Species

Global Rank: G5
State Rank: SNR
C-value: 4


Agency Status
USFWS:
USFS:
BLM:


 

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General Description
Caespitose annual. Stems ascending to erect, 1–5 cm. Leaves basal, 0.5–2 mm wide, mostly flat. Inflorescence of hemispheric to obovoid spikes of sessile or subsessile spikelets. Spikelets flattened, 3–8 mm long. Scales long-acuminate, light brown, ca. 1.5 mm long, 7- to 9-veined with long spreading to reflexed tips. Flowers: stamen 1; style 3-branched. Achene narrowly obovate, 3-sided, brown, 0.5–1 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range

Year-round
 


Range Comments
Throughout temperate and tropical North America, cosmopolitan (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 7

(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
Sandy or gravelly, vernally-flooded soil along rivers; plains, valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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?
    • Eggers, M.J.S. 2005. Riparian vegetation of the Montana Yellowstone and cattle grazing impacts thereon. M.Sc. Thesis. Montana State University, Bozeman, MT. 125 p.
  • Web Search Engines for Articles on "Bearded Flatsedge"
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Citation for data on this website:
Bearded Flatsedge — Cyperus squarrosus.  Montana Field Guide.  .  Retrieved on , from