It is a term of widespread use to refer to plants that grow or develop in lakes, lagoons, very slow streams or ponds. Are they also often called nymphaeaceous? or lotus. They belong to the families Nymphaeaceae, Cabombaceae.
It is one of the names for Nymphaea plants, they are aquatic, with large floating leaves, long roots and white flowers, although there are also red and pink. See golfan, lotus flower, nile rose, water lily.