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 was grown by the Ancient Egyptian civilization, and had significance in their religion. 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. It is associated with a species of snail, which is one of the main hosts of the pathogen causing human schistosomiasis. The underwater rhizomes are edible. Like other species in the genus, the plant contains the psychoactive alkaloid aporphine[inconsistent] & x28;not to be confused with apomorphine, a metabolic product of aporphine& x29;.
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africa alkaloid also ancient anoxic apomorphine aporphine aporphineinconsistent aquatic arabia associated become been being caerulea can causing civilization conditions confused contains deeper dominant eastern edible egyptian flower found freshwater genus grown habitats had half has hosts human lakes like main metabolic most mud naturally not nouchali nutritionally nymphaea one ornamental other parts pathogen plant pools poor product psychoactive regions religion rhizomes rivers roots schistosomiasis significance snail southern species spread such their throughout tolerate underwater var was water well which
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