living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Chlorophycota see Phylum Chlorophyta Pascher (1914)
           Class Chlorophyceae Wille (1884) - chlorophytes
             Order Chlorococcales Pascher see Order Chlamydomonadales F.E. Fritsch
               Family Protosiphonaceae Blackman & Tansley
                 Genus Protosiphon Klebs (1896)
                   Protosiphon botryoides G.A. Klebs