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Montana Field Guide

Montana Field Guides

Small Bur-reed - Sparganium natans
Other Names:  Sparganium minimum


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

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General Description
Stems floating, 10–60 cm. Leaves 2–5 mm wide, not keeled. Inflorescence unbranched with usually 1 sessile male head and 1 to 4, sessile or pedunculate female heads, 7–12 mm wide at maturity. Styles unbranched. Achenes fusiform, 2–4 mm long, abruptly tapered to the ca. 1 mm long beak (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Circumboreal south to CA, UT, WY, ND, IL and NY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 26

(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 water of lakes, ponds, fens; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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