[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 Chordariaceae Grev. (1830) Genus Halonema E. Jaasund (1951) 1 Halonema subsimplex Jaasund (1951)