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Montana Field Guide

Montana Field Guides

Straightleaf Pondweed - Potamogeton strictifolius

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Status Under Review
Native Species

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


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Stems simple or branched, slightly compressed without globose glands at the nodes. Submersed leaves linear, rigid, 2–7 cm × 0.5–2 mm; stipules 8–20 mm long, sheathing but fraying with age. Floating leaves absent. Spikes 8–15 mm long with separate whorls of flowers. Tepals green, 1–2 mm long. Fruits 2–3 mm long, barely keeled with a beak ca. 0.5 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
YT to NB south to UT, SD, WI and VA. Known from Park County (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 146

(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
Fresh or somewhat alkaline, shallow water of lakes; 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?
    • 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.
    • Rasmussen, S.M. 1968. Composition and structure of macrophyte vegetation of the Firehole River, Yellowstone National Park as related to physical and chemical factors. M.Sc. Thesis. Bozeman, MT: Montana State University. 44 p.
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Citation for data on this website:
Straightleaf Pondweed — Potamogeton strictifolius.  Montana Field Guide.  .  Retrieved on , from