Littorella uniflora

Shoreweed probably has a love-hate relationship with water. If it isn't in water during the winter, it won't survive. But if it is submerged in the summer, it won't flower. Fortunately, shoreweed is not dependent upon seeds to reproduce. New plants also form from root suckers. This relatively rare plant is found locally in several places in the Netherlands, such as on the Wadden Islands. It grows along banks, in dune slacks and heath fens, in soils that are poor in nutrients and at the most very slightly acidic. It also grows in shallow clear, clean water, which can be slightly brackish.