Ulvaceae
Ulva lactuca
Scientific classification
Clade:	Viridiplantae
Division:	Chlorophyta
Class:	Ulvophyceae
Order:	Ulvales
Family:	Ulvaceae (J.V.Lamour.) Dumort. (1822)
Genera
See text

Ulvaceae (/əlˈveɪsi.iː, -ˌaɪ/) is a widely distributed family of thin green algae characterized by a flat or a hollow tubular thallus, reproducing via conjugation of planogametes or zoospores, and classified within the orders Ulotrichales or, more commonly, Ulvales.^[1]

• Gemina V.J.Chapman, 1952
• Letterstedtia Areschoug, 1850
• Ochlochaete Thwaites, 1849
• Percursaria Bory de Saint-Vincent, 1823
• Ruthnielsenia C.J.O'Kelly, B.Wynsor & W.K.Bellows, 2004
• Ryuguphycus H.Kawai, T.Hanyuda & T.Kitayama, 2020
• Ulva Linnaeus, 1753
• Ulvaria Ruprecht, 1850
• Umbraulva E.H.Bae & I.K.Lee, 2001