Organismen see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pflanzenreich Haeckel (1866) - plants
     Chlorophycea
       1 Order Tetrasporales Lemmermann see Order Chlamydomonadales F.E. Fritsch
       2 Order Protococcales
       3 Order Siphonales see Order Bryopsidales J.H.Schaffn. (1922)
       4 Order Siphonocladiales
       5 Order Ulothrichales