Nymphaeaceae is a name for a family of flowering plants. Members of this family are commonly called water lilies and live in freshwater areas in temperate and tropical climates around the world. The family contains 8 genera. There are about 70 species of water lilies around the world[1]. The genus Nymphaea contains about 35 species across the Northern Hemisphere[1]. The genus Victoria contains two species of giant water lilies and can be found in South America[1]. Water lilies are rooted in soil in bodies of water, with leaves and flowers floating on the water surface. The leaves are round, with a radial notch in Nymphaea and Nuphar, but fully circular in Victoria.
Water lilies are divided into two main categories: hardy and tropical. Hardy water lilies bloom only during the day, but tropical water lilies can bloom either day or night, and are the only group to contain blue-flowered plants.
Water lilies can be fragrant, such as Nymphaea odorata.
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