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Montana Field Guide

Montana Field Guides

Bearded Flatsedge - Cyperus squarrosus
Other Names:  Cyperus aristatus

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Native Species

Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links

 
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 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 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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Bearded Flatsedge — Cyperus squarrosus.  Montana Field Guide.  .  Retrieved on , from