SNAILSEED PONDWEED 

 (Potamogeton diversif olius ; includes 

 bicupulatus, capillaceus and spirillus) 



Montana to Newfoundland, California, 

 Texas and Florida. 



Sometimes there are no floating 

 leaves (see page 19). 



Resembles Vasey Pondweed but has 

 short-stalked or stalkless, ball-like 

 underwater seed heads; seeds resembling 

 flat snails; and underwater leaves with 

 a base that makes a sheath around the 

 stem. 



VASEY PONDWEED (Potamogeton vaseyi) 



Minnesota to New Brunswick, Illinois and 

 Pennsylvania. 



Sometimes there are no floating leaves (see 

 page 19). 



Resembles Snailseed Pondweed but all the seed 

 heads are long-stalked; the seeds have convex 

 sides; and the base of the underwater leaves does 

 not make a sheath around the stem. 



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