Also called water cabbage, Nile cabbage and shellflower.

A freshwater aquatic plant.  Native to the tropics.  Invasive > learn+quiz Invasive > Global Invasive > in USA+Canada Invasive > report it! Invasive > in USA Invasive > in Michigan

Learn more about water lettuce Pistia stratiotes

Biological Control in Eastern USA (.pdf page 73) Discover Life Encyclopedia of Life Google Google images USDA PLANTS db USGS Wikipedia