Spirodela Polyrrhiza is a species of aquatic plant that belongs to the duckweed family. Some common synonyms for Spirodela Polyrrhiza include duckweed, greater duckweed, and common duckweed. It is a floating plant that is an important part of the ecosystem in ponds, lakes, and streams. Duckweed is an excellent source of food for aquatic animals and can help purify water by absorbing excess nutrients. It is also used in bioremediation to remove contaminants from water and soil. Spirodela Polyrrhiza can reproduce rapidly and form dense mats on the water surface, making it an important plant for water management and research purposes.