[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Rhodophycota
       Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901)
         Order Acrochaetiales Feldmann
           Family Acrochaetiaceae Melch. (1954), nom. cons.
             Genus Acrochaetium Nägeli (1858)
               Acrochaetium trifilum (Buffham) Batters