Blue Water-speedwell
Veronica anagallis-aquatica is a species of flowering plant in the family Plantaginaceae
Its true native range is not clear, but the plant is present on most continents, and in most places it is probably naturalized.
It occurs in many types of moist and wet habitat, and it is semi-aquatic, often growing in shallow water along streambanks, in ponds, and in other wetland environments.