 
        
                Group: Spermatophytina (Spermatophytes) 
                Family: Haloragaceae (Watermilfoil family)
                Genus: Myriophyllum (Watermilfoil)
            
                
                    
                        Myriophyllum alterniflorum DC. - Alternate Water-Milfoil
                    
                    
                
                    
                        Myriophyllum heterophyllum Michx. - Various-Leaved Water-Milfoil
                    
                    
                
                    
                        Myriophyllum verticillatum L. - Whorled Water-Milfoil
                    
                    
                
                    
                        Myriophyllum spicatum agg.  
                    
                    
                
                    
                        Myriophyllum spicatum L. - Spiked Water-Milfoil