Slender Pondweed - Potamogeton pusillus
MNPS Threat Rank
Stems terete, branched, often with globose glands at some nodes. Submersed leaves linear 1–6 cm × 1–2 mm; stipules 5–30 mm long, sheathing or not but quickly fraying. Floating leaves absent. Spikes 5–12 mm long, continuous or with distinct whorls of flowers. Tepals green, 1–1.5 mm long. Fruits 1–2 mm long, obscurely keeled with a short, curved beak (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Circumboreal south to most of U.S., Mexico and S. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Shallow to deep, fresh to saline water of ponds, lakes, marshes, slow streams; plains, valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.