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Montana Field Guide

Montana Field Guides

Slender Pondweed - Potamogeton pusillus
Other Names:  Potamogeton berchtoldii


Global Rank: G5
State Rank: SNR

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

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General Description
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).

Species Range
Present
 


Range Comments
Circumboreal south to most of U.S., Mexico and S. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 14

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Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
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).

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