plantenrijk Haeckel (1866) - plants
   [Division] Protophyta Sachs 1874 - primitive plants
     1 Class Schizomycetes Nägeli 1857 (Approved Lists 1980) - bacteria and related forms
     2 Class Schizophyceae Cohn 1879 - blue-green algae
     3 Class Microtatoniotes orth. inval. see Class Microtatobiotes Philip 1956 (Approved Lists 1980)