#order_Ulvales__Ulvales  an order of protoctista
  supertype:  #protoctist_order  the order of protoctista
  member of:  #class_Chlorophyceae
  member:  #family_Ulvaceae__Ulvaceae__sea-lettuce_family__sealettucefamily  thin flat or tubular green algae
     member:  #genus_Ulva__Ulva  type genus of the family Ulvaceae; green seaweed having a thallus two cells thick: sea lettuce
        member:  #sea_lettuce__sealettuce__laver  seaweed with edible translucent crinkly green fronds

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