oxyphototroph prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Class Cyanoprokaryota Komárek & Golubić 1990 nom. nud. - cyanoprokaryotes
     Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
       Family Microchaetaceae Lemmermann (1907) see Family Rivulariaceae Frank (1886)
         Subfamily Microchaetoideae
           1 Form genus Camptylonemopsis Desikachary (1948) see Genus Camptylonemopsis Desikachary 1948
           2 Form genus Fortiea G. De Toni (1936) see Genus Fortiea De Toni 1936
           3 Form genus Microchaete G. Thuret ex Bornet & Flahault (1886), nom. cons. see Genus Microchaete Thuret ex Bornet and Flahault 1886 nom. cons.