plantenrijk Haeckel (1866) - plants
   [Division] Protophyta Sachs 1874 - primitive plants
     Class Schizomycetes Nägeli 1857 (Approved Lists 1980) - bacteria and related forms
       Order Beggiatoales Buchanan 1957 (Approved Lists 1980) see Order Thiotrichales Garrity et al. 2005
         Family Beggiatoaceae Migula 1894 (Approved Lists 1980) see Family Thiotrichaceae
           Genus Beggiatoa Trevisan 1842 (Approved Lists 1980)
             Beggiatoa micrabilis