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Montana Field Guide

Montana Field Guides

Northern Pondweed - Potamogeton alpinus

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Native Species

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


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Stems terete, little branched. Submersed leaves linear-lanceolate, 4–12 cm × 5–12 mm; stipules 15–35 mm long, not closely sheathing. Floating leaves (often lacking) short-petiolate; blades oblanceolate to narrowly elliptic, reddish, 4–7 cm long. Spikes to 13 cm long, continuous. Tepals green Shallow, fresh or alkaline water of ponds, lakes; valleys, montane becoming reddish, 2–3 mm long. Fruits 3–4 mm long, keeled with a curved beak (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
BC to NL south to CA, WY, OK, TN and VA (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 72

(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; valleys, montane (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?
    • Garrett, P.A. 1983. Relationships between benthic communities, land use, chemical dynamics, and trophic state in Georgetown Lake. Ph.D. Dissertation. Bozeman, MT: Montana State University. 136 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 "Northern Pondweed"
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Citation for data on this website:
Northern Pondweed — Potamogeton alpinus.  Montana Field Guide.  .  Retrieved on , from