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Montana Field Guide

Montana Field Guides

Narrowleaf Bur-reed - Sparganium angustifolium
Other Names:  Sparganium emersum


Global Rank: G5
State Rank: S4

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

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General Description
Stems 5–50 cm, often floating. Leaves 2–12 mm wide, sometimes keeled, often exceeding the inflorescence. Inflorescence unbranched, of 2 to 6 sessile, contiguous or separate, male heads and 2 to 4, sessile or pedunculate female heads, 8–25 mm wide at maturity. Styles unbranched, 0.6–2 mm long. Achenes fusiform; body 3–6 mm long, constricted in the middle, tapering gradually to the beak, 2–4 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Circumboreal south to CA, NM, SD and PA (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 8

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

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