Nymphaea nouchali var. caerulea, is a water lily in the genus Nymphaea, a botanical variety of Nymphaea nouchali.
It is an aquatic plant of freshwater lakes, pools and rivers, naturally found throughout most of the eastern half of Africa, as well as parts of southern Arabia, but has also been spread to other regions as an ornamental plant. It can tolerate the roots being in anoxic mud in nutritionally poor conditions, and can become a dominant plant in deeper water in such habitats. The underwater rhizomes are edible.