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Lemna minor:
Small duckweed
Lemna minor L.: Small duckweed, duckmeat. Lemnaceae (duckweed family).
Native. Individual plants consist of one to several very small (0.1 in; 2.5 cm) smooth oval leaves that lie almost flat on the water surface and float freely. The leaf has a slightly raised midvein on its surface. Roots and flower parts are present but difficult to see. Plant colonies can cover broad areas of calm water in ponds and lakes, and may mass up against shorelines. They can create a nuisance to water flow and aesthetics.
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