Pflanzenreich Haeckel (1866) - plants
   Division Euthallophyta
     Subdivision Schizophyta
       Class Schizophyceae Cohn (1879) - blue-green algae see Class Schizophyceae Knoblauch 1890
         Subclass Psilonemateae
           Family Stigonemataceae Borzì (1892), nom. cons. see Family Stigonemataceae corrig. (Agardh ex Bornet and Flahault 1886) Borzì 1892 nom. cons.