Water lettuce

Title Info
Common name Water lettuce
Scientific name Pistia stratiotes
Taxonomic group Araceae
Source Dan L. Perlman
Human impacts Invasive species
Conservation Invasive species
Lessons Invasive species

Water lettuce. This aquatic perennial plant is invasive in temperate regions worldwide. Water lettuce can form dense floating mats that prevent navigation, reduce dissolved oxygen in the water, block sunlight, and provide mosquito breeding habitat. It is known to have been present in Florida as early as 1765, but may have originated in Africa. Despite its invasive qualities, the plant is commonly sold for use in aquaria.