Nymphaea caerulea

Nymphaea caerulea, known primarily as blue lotus (or blue Egyptian lotus), but also blue water lily (or blue Egyptian water lily), and sacred blue lily, is a water lily in the genus Nymphaea. Like other species in the genus, the plant contains the psychoactive alkaloid aporphine (not to be confused with apomorphine). It was known to the Ancient Egyptian civilizations.
https://en.wikipedia.org/wiki/Nymphaea_caerulea