[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
           Family Myrionemataceae Nägeli (1847)
             1 Genus Microspongium J. Reinke (1888)
             2 Genus Microsporangium see Genus Microspongium J. Reinke (1888)
             3 Genus Myrionema Grev. (1827)
             4 Genus Protectocarpus P. Kornmann (1955)
             5 Genus Ulonema M. Foslie (1894)