Blue lotus

N. nouchali is a day-blooming nonviviparous plant with submerged roots and stems. Part of the leaves are submerged, while others rise slightly above the surface. The leaves are round and green on top; they usually have a darker underside. The floating leaves have undulating edges that give them a crenellated appearance.

This water lily has a beautiful flower which is usually violet blue in color with reddish edges. Some varieties have white, purple, mauve, or fuchsia-colored flowers, hence its name red and blue water lily. [wikipedia.org]