#manna_grass__mannagras__sweet_grass__sweetgras  any of several moisture-loving grasses of the genus Glyceria having sweet flavor or odor
  supertype:  #meadowgrass__meadow_grass  any of various grasses that thrive in the presence of abundant moisture
  member of:  #genus_Glyceria
  subtype:  #reed_meadow_grass__Glyceria_grandis  a pasture grass of moist places throughout North America

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