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Lemna spp., or duckweed as it is commonly known, is a small floating aquatic weed which has been found to be the cause of clogging of irrigation canals in the Serpentine area. It is a small plant with an adult frond usually is only between one and three millimeters in width. Source? The plant consists of a single, flattened, oval-shaped frond, which floats horizontally on the waters surface. There are no leaves or stems. The plant body is the main site for photosynthesis and nutrient uptake occurs through diffusion across all surfaces of the plant. This discards th...