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Montana Field Guide

Montana Field Guides

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

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Native Species

Global Rank: G5
State Rank: S4
C-value: 7


Agency Status
USFWS:
USFS:
BLM:


 

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

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

Observations in Montana Natural Heritage Program Database
Number of Observations: 52

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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 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?
    • Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
    • Horpestad, A.A. 1969. Factors affecting the distribution and abundance of aquatic macrophytes in parts of the Madison, Firehole and Gibbon Rivers. M.Sc. Thesis. Bozeman, MT: Montana State University. 88 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
  • Web Search Engines for Articles on "Narrowleaf Bur-reed"
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Citation for data on this website:
Narrowleaf Bur-reed — Sparganium angustifolium.  Montana Field Guide.  .  Retrieved on , from