#genus_Ceratophyllum__Ceratophyllum  constituting the family Ceratophyllaceae: hornworts
  supertype:  magnoliid_dicot_genus__magnoliiddicotgenu  genus of dicotyledonous flowering plants regarded as among the most primitive of extant angiosperms
  member of:  family_Ceratophyllaceae
  member:  hornwort.aquatic_plant  any aquatic plant of the genus Ceratophyllum; forms submerged masses in ponds and slow-flowing streams

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