Lemna, commonly known as duckweed, is a small, floating aquatic plant found in freshwater environments. It consists of tiny, green leaves that resemble miniature lily pads and can reproduce rapidly, often forming dense mats on the water's surface. Duckweed plays a vital role in ecosystems by providing food for various aquatic animals and helping to improve water quality. This plant is also of interest in scientific research and agriculture due to its high growth rate and ability to absorb nutrients. Lemna can be used in wastewater treatment and as a potential source of biofuel, making it a valuable resource for sustainable practices.