Ulva lactuca

Ulva lactuca
Ulva lactuca in Brofjorden, Sweden
Illustration of Ulva lactuca in English Botany (Sowerby, 1790-1814)
Scientific classification
Clade: Viridiplantae
Division: Chlorophyta
Class: Ulvophyceae
Order: Ulvales
Family: Ulvaceae
Genus: Ulva
Species:
U. lactuca
Binomial name
Ulva lactuca
Synonyms
  • Ulva crassa V. J. Chapman, 1956

Ulva lactuca, also known by the common name sea lettuce, is an edible green alga in the family Ulvaceae. It is the type species of the genus Ulva. A synonym is U. fenestrata, referring to its "windowed" or "holed" appearance. Despite its common name, it is not a lettuce.