 The genus "Ondinea" has recently been shown to be a morphologically aberrant species of "Nymphaea", and is now included in this genus.The genera "Euryale", of far east Asia, and "Victoria", from South America, are closely related despite their geographic distance, but their relationship toward "Nymphaea" need further studies.The sacred lotus was once thought to be a water lily, but is now recognized to be a highly modified eudicot in its own family Nelumbonaceae of the order Proteales.