Small Duckweed Small duckweed is similar to great duckweed. It is often found growing among the great duckweed plants. The green plant body, or frond, is only 2 mm across with only one root hanging down in the water. Like the great duckweed, it reproduces mostly by budding. Its frond is carried by water currents or on the bodies of animals to other places.
Plants are either male or female, never both.
Ivy Duckweed Ivy duckweed grows in sheets of tiny green bodies or fronds held together by rootlike connectors. The sheet floats on the surface of the water or just below the surface of the water. Each frond is only about 5 mm across. It reproduces by budding. The sheet is formed because the new bud does not pinch off but remains attached by root-like connectors.