The plants are described in three groups, according to whether they 



have 



floating leaves (and usually underwater leaves) 



Floating Pondweed 

 Oakes Pondweed 

 Heartleaf Pondweed 

 Bog Pondweed 

 Variable Pondweed 



(also in next group) 

 Illinois Pondweed 



(also in next group) 

 Bigleaf Pondweed 



(also in next group) 

 Longleaf Pondweed 

 Red Pondweed 



(also in next group) 

 Ribbonleaf Pondweed 



(also in third group) 

 Snailseed Pondweed 



(also in third group) 



only underwater leaves--oval, oblong, or lance-shaped 



Redhead-grass 

 Whitestem Pondweed 

 Curly Pondweed 

 Variable Pondweed 



(also in first group) 



Illinois Pondweed 



(also in first group) 

 Bigleaf Pondweed 



(also in first group) 

 Red Pondweed 



(also in first group) 



only underwater leaves--threadlike or ribbonlike 



Alga Pondweed 

 Vasey Pondweed 



(also in first group) 

 Snailseed Pondweed 



(also in first group) 

 Northern Naiad 

 Southern Naiad 

 Slender Naiad 

 Horned- pondweed 

 Slender Pondweed 

 Fries Pondweed 

 Leafy Pondweed 



Hill Pondweed 

 Bluntleaf Pondweed 

 Flats tem Pondweed 

 Water- stargrass 

 Ribbonleaf Pondweed 



(also in first group) 

 Fern Pondweed 

 Widgeongrass 

 Sago Pondweed 

 Bigsheath Pondweed 

 Threadleaf Pondweed 

 Western Pondweed 



