Nymphaeaceae
In botany, Nymphaeaceae is the name of a family of plants which grow in water. The family is also called water-lily family.
Their flowers suggest they are one of the earliest groups of angiosperms. Modern genetic analyses by the Angiosperm Phylogeny Group researchers has confirmed its basal position among flowering plants.
Also, the Nymphaeaceae are more diverse and wdespread than other basal angiosperms. Nymphaeaceae is in the order Nymphaeales. According to the most widely accepted flowering plant classification system, this is the second diverging group of angiosperms after Amborella.
References
Plant families
Nymphaeales