duckweed

1. Any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds (synset 111814988)
   is a type of: aquatic plant, hydrophyte, hydrophytic plant, water plant - a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth
   subtypes:

   • common duckweed, lemna minor, lesser duckweed - of temperate regions except eastern Asia and Australia
   • lemna trisulca, star-duckweed - cosmopolitan in temperate regions except North America
   • great duckweed, spirodela polyrrhiza, water flaxseed - cosmopolitan except South America and New Zealand and some oceanic islands
   • watermeal - any of various aquatic plants of the genus Wolffia; throughout warmer regions of the world
   • bogmat, mud midget, wolffiella gladiata - having narrow flat sickle-shaped submerged fronds; North America
   belongs to: duckweed family, family lemnaceae, lemnaceae - family of small free-floating thalloid plants

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