American Water-horehound, Cut-leaf Water-horehound, Cutleaf Water Horehound: Lycopus americanus -
Pacific Water Hoarhound, Rough Bugleweed, Rough Water-horehound: Lycopus asper (Synonym: Lycopus lucidus) -
Northern Bugleweed: Lycopus uniflorus (Synonyms: Lycopus uniflorus var. uniflorus, Lycopus virginicus var. pauciflorus) -