Between brackets is the number of accepted marine extant species
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Shows the number of accepted marine extant species within the taxon
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- Biota (1 799)
- Kingdom Chromista (437)
- Kingdom Plantae (1 362)
- Subkingdom Biliphyta (1 064)
- Subkingdom Viridiplantae (298)
- Infrakingdom Streptophyta (7)
- Phylum (Division) Chlorophyta (290)
- Subphylum (Subdivision) Chlorophytina (290)
- Class Chlorodendrophyceae
- Class Chlorophyceae (11)
- Class Pedinophyceae
- Class Trebouxiophyceae (11)
- Class Ulvophyceae (268)
- Order Bryopsidales (66)
- Order Chlorocystidales
- Order Cladophorales (80)
- Order Dasycladales (8)
- Order Oltmannsiellopsidales (1)
- Order Sykidiales
- Order Ulotrichales (28)
- Order Ulvales (84)
- Family Bolbocoleonaceae O'Kelly & Rinkel in Brodie, Maggs & D.M. John, 2007 (1)
- Family Capsosiphonaceae V.J. Chapman, 1952
- Family Kornmanniaceae L.Golden & K.M.Cole, 1986 (12)
- Family Phaeophilaceae D.F. Chappell, C.J. O'Kelly, L.W. Wilcox & G.L. Floyd, 1990 (3)
- Family Ulvaceae J.V. Lamouroux ex Dumortier, 1822 (38)
- Genus Enteromorpha Link, 1820 accepted as Ulva Linnaeus, 1753
- Genus Ochlochaete Thwaites, 1849 (1)
- Genus Percursaria Bory de Saint-Vincent, 1823 (1)
- Genus Ruthnielsenia C.J.O'Kelly, B.Wynsor & W.K.Bellows, 2004 (1)
- Genus Ulva Linnaeus, 1753 (32)
- Genus Ulvaria Ruprecht, 1850 (2)
- Genus Umbraulva E.H.Bae & I.K.Lee, 2001 (1)
- Family Ulvellaceae Schmidle, 1899 (30)
- Order Ulvophyceae incertae sedis (1)
- Subphylum (Subdivision) Prasinophytina
- Class Chlorophyta incertae sedis
- Class Prasinophyceae
- Phylum (Division) Prasinodermatophyta (1)