#genus_Fucus  type genus of the family Fucaceae: cartilaginous brown algae
  supertype:  #protoctist_genus  any genus of Protoctista
  member of:  #family_Fucaceae
  member:  #fucus__fucu  any member of the genus Fucus
  member:  #serrated_wrack__Fucus_serratus__tang  brown algae seaweed with serrated edges
  member:  #black_rockweed__blackrockweed__bladderwrack__bladder_fucus__bladderfucu__tang__Fucus_vesiculosus  common black rockweed used in preparing kelp and as manure

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