organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     related to multicellular groups
       Class Chlorophyceae Wille (1884) - chlorophytes
         Order Volvocida Francé, 1894, orth. zool. - volvocids see Order Chlamydomonadales F.E. Fritsch
           Suborder Chlamydomonadina see Order Volvocales Oltmanns (1904)
             Family Stephanosphaeridae Korshikov (1938) see Family Stephanosphaeraceae Korshikov (1938)
               1 Genus Chlorogonium Ehrenb. (1836)
               2 Genus Haematococcus J. von Flot. (1844)
               3 Genus Stephanosphaera Cohn (1852)