Sentence Examples


  • DUCKWEED, the common botanical name for species of Lemna which form a green coating on fresh-water ponds and ditches.
  • The familiar duckweed which covers the surface of a pond consists of a tiny green "thalloid" shoot, one, that is, which shows no distinction of parts - stem and leaf, and a simple root growing vertically downwards into the water.
 
 

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