LEAFY PONDWEED 

 (Potamogeton foliosus; includes curtissii) 



Fresh and alkali water inland from Northwest Territories to Nova 

 Scotia, California, Texas and Florida; and fresh and slightly brackish 

 water along each coast. 



Resembles Slender, Vasey, Fries, Snailseed, Hill and Bluntleaf 

 Pondweeds. It has shorter-stalked seed heads than Slender, Vasey and 

 Fries Pondweeds; and its seeds have a knife-edged, often scalloped, 

 back. It also has bigger, fatter winterbuds than Vasey Pondweed; usually 

 smaller leaves than Fries Pondweed. Its leaves do not have bases that 

 make a sheath around the stem, as in Snailseed Pondweed; all its seed 

 heads are ball-like and under water; and its seeds are not snail-like. 

 It has smaller seeds (a little more than 1/16 inch vs. 1/8 inch) and 

 usually smaller leaves than Hill and Bluntleaf Pondweeds. 



HILL PONDWEED 

 (Potamogeton hillii; includes porteri) 



Michigan to Vermont, Ohio and Pennsylvania. 



Looks like extra big Leafy Pondweed but has larger seeds (1/8 inch 

 vs. a little more than 1/16 inch) and always sharp- tipped, usually 

 larger, leaves. 



Resembles Bluntleaf, Fries and Slender Pondweeds. It has sharp- 

 tipped leaves and ball-like seed heads in contrast with Bluntleaf Pond- 

 weed's blunt-tipped leaves and oblong seed heads. It has shorter- 

 stalked seed heads than Fries and Slender Pondweeds; and seeds with a 

 sharply-ridged back. Usually it has larger leaves than Slender Pondweed. 



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