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Montana Field Guide

Montana Field Guides

Sheathed Pondweed - Potamogeton vaginatus
Other Names:  Stuckenia vaginata


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 7

External Links






 
General Description
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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Circumboreal south to OR, UT, CO and NY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 52

(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
Mostly shallow, often alkaline water of lakes, streams; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Sheathed Pondweed — Potamogeton vaginatus.  Montana Field Guide.  .  Retrieved on , from