Kingdom Protoctista Hogg, 1860
   Phylum Chlorophyta Pascher (1914) - green algae
     Class Chlorophyceae Wille (1884) - chlorophytes
       Order Tetrasporales Lemmermann see Order Chlamydomonadales F.E. Fritsch
         Family Palmellopsidaceae Korshikov
           1 Genus Palmellopsis O. Korshikov (1953)
           2 Genus Tetrasporidium Möbius (1893)
           3 Genus Asterococcus Scherffel (1908)