Like many other vigorously growing members of the Nymphaeaceae blocking out the light and thereby killing both submerged plants and less competitive surface - growing aquatics .
The Nymphaeaceae is some species of Nuphar tend to cover the water surface completely .
Like many other vigorously growing members of the Nymphaeaceae , some species of Nuphar tend to cover the water surface completely , blocking out the light and thereby killing both submerged plants and less competitive surface - growing aquatics .