#genus_Potamogeton__Potamogeton  a large genus of aquatic herbs found in quiet waters in temperate regions; leaves usually float on the water
  supertype:  #monocot_genus__monocotgenu__liliopsid_genus  genus of flowering plants having a single cotyledon (embryonic leaf) in the seed
  member of:  #family_Potamogetonaceae
  member:  #curleyleaf_pondweed__curled_pondweed__Potamogeton_crispus  European herb naturalized in the eastern United States and California
  member:  #variously-leaved_pondweed__Potamogeton_gramineous  of Europe (except the Mediterranean area) and the northern United States
  member:  #loddon_pondweed__Potamogeton_nodosus__Potamogeton_americanus  pondweed with floating leaves; of northern United States and Europe

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