[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Phaeophycota see Class Phaeophyceae Hansgirg (1886)
       Class Phaeophyceae Hansgirg (1886) - brown algae
         Order Chordariales
           1 Family Acrotrichaceae
           2 Family Chordariaceae Grev. (1830)
           3 Family Elachistaceae
           4 Family Leathesiaceae
           5 Family Myrionemataceae Nägeli (1847)
           6 Family Ralfsiaceae Farlow (1881)
           7 Family Spermatochnaceae