Genus Pistia, commonly known as water lettuce, is a group of aquatic plants that are native to tropical and subtropical regions. These plants are characterized by their rosette-shaped leaves that float on the water surface. Synonyms for the term Genus Pistia include water cabbage, Nile cabbage, and shellflower. The plants are commonly found in calm, still waters such as ponds, lakes, and slow-moving streams. They are often used in water gardens and aquariums for their ornamental value. Despite their beauty, these plants are considered invasive in some regions and can displace native aquatic vegetation if not properly controlled.