#family_Fucaceae__Fucaceae  small family of brown algae: gulfweeds; rockweeds
  supertype:  protoctist_family  any of the families of Protoctista
  member of:  order_Fucales
  member:  fucoid_algae__fucoid  any of various algae of the family Fucaceae
  member:  rockweed  coarse brown seaweed growing on rocks exposed at low tide
  member:  genus_Fucus  type genus of the family Fucaceae: cartilaginous brown algae
     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
  member:  genus_Ascophyllum__Ascophyllum  brown algae distinguished by compressed or inflated branchlets along the axis
  member:  genus_Sargassum  a genus of protoctista
     member:  gulfweed__sargassum__sargasso__Sargassum_bacciferum  brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea

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