pistia
/ˈpɪstiə/
noun
- A floating aquatic plant with thick, spongy leaves, often found in tropical and subtropical waters; also called water lettuce.
- Gardeners often use pistia to help control algae in backyard fish ponds.
- The pond was covered with pistia, creating a green carpet on the water.
- Pistia can spread quickly and become invasive in warm climates.
Synonyms