| Lycopus
americanus
Muhl. ex W. Barton American water-horehound Native |
                                
|
| Lycopus
amplectens
Raf. pondshore water-horehound, sessile water-horehound Watch-Listed |
                                
|
| Lycopus
europaeus
L. European water horehound Introduced |
|
| Lycopus
rubellus
Moench stalked water horehound, swamp water horehound Endangered |
                            
|
| Lycopus
uniflorus
Michaux tuberous water-horehound Native |
                                                     
|
| Lycopus
virginicus
L. Virginia water-horehound, floodplain water-horehound Native |
                                    
|