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Montana Field Guide

Montana Field Guides

Large Bur-reed - Sparganium eurycarpum

Native Species

Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 7

External Links






 
General Description
Stems erect, 30–100 cm. Leaves 5–15 mm wide, keeled at least toward the base, flattened toward the tip. Inflorescence usually branched, each branch with 5 to 14 separate sessile male heads and 1 or 2, sessile or pedunculate female heads, 15–25 mm wide at maturity. Styles 2-lobed. Achenes obovoid, 4–8 mm long, tapering gradually to abruptly to the 2–4 mm long beak (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
NT to NL south to CA, NM, KY, VA, Mexico; Asia (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 3

(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
Shallow to deep, fresh water of lakes, ponds, sloughs; valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Large Bur-reed — Sparganium eurycarpum.  Montana Field Guide.  .  Retrieved on , from