Sheathed Pondweed - Potamogeton vaginatus
Stems terete, branched. Submersed leaves linear, 2–10 cm × 1–2 mm, attached to the stipule; stipules 1–5 cm long, sheathing, brown, swollen at the base. Floating leaves absent. Spikes 1–5 cm long with well-separated whorls of flowers. Tepals brownish-green, 1–2 mm long. Fruits 2–3 mm long, obscurely keeled and beaked (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
Circumboreal south to OR, UT, CO and NY (Lesica et al. 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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Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
- 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
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- 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.