organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Protoctista Hogg, 1860
     Phylum Phaeophyta Kjellman (1891) see Phylum Phaeophycota
       Genus Alaria Grev. (1830), nom. cons.
       Genus Ascophyllum Stackhouse (1809), nom. cons., orth. cons.
       Genus Chorda Stackhouse (1797)
       Genus Chordaria C.Agardh (1817), nom. cons.
       Genus Cutleria Grev. (1830)
       Genus Dictyota J.V.F. Lamouroux, 1809, nom. rej.
       Genus Ectocarpus Lyngbye (1819), nom. cons.
       Order Fucales Kylin
       Genus Laminaria J.V.F. Lamouroux (1813), nom. cons.
       Genus Macrocystis C.Agardh (1820)
       Genus Nereocystis A. Postels & F.J. Ruprecht (1840)
       Genus Pelagophycus J.E. Areschoug (1881)
       Genus Postelsia F.J. Ruprecht (1852)
       Genus Sargassum C.Agardh (1820), nom. cons.
       Genus Scytosiphon C.Agardh (1820), nom. cons.
       Genus Sphacelaria H.C. Lyngbye (1819)
       Genus Tilopteris F.T. Kützing (1849)
       Genus Zonaria C.Agardh (1817), nom. cons.