common duckweed

Noun
  1. Of temperate regions except eastern Asia and Australia (synset 111815518)
    is a type of: duckweed - any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds
    belongs to: genus lemna, lemna - minute aquatic herbs floating on or below the water surface of still water consisting of a leaflike frond or plant body and single root
    same as: lemna minor, lesser duckweed

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