#genus_Ulva__Ulva  type genus of the family Ulvaceae; green seaweed having a thallus two cells thick: sea lettuce
  supertype:  #protoctist_genus  any genus of Protoctista
  member of:  #family_Ulvaceae
  member:  #sea_lettuce__sealettuce__laver  seaweed with edible translucent crinkly green fronds

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