ulva

Noun
  1. Type genus of the family Ulvaceae;
    Green seaweed having a thallus two cells thick: sea lettuce (synset 101411188)
    is a type of: protoctist genus - any genus of Protoctista
    member holonym: laver, sea lettuce - seaweed with edible translucent crinkly green fronds
    belongs to: family ulvaceae, sea-lettuce family, ulvaceae - thin flat or tubular green algae
    same as: genus ulva

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