oxyphototroph prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Class Cyanoprokaryota Komárek & Golubić 1990 nom. nud. - cyanoprokaryotes
     Order Stigonematales Geitler (1925) see Order Nostocales Borzì (1914)
       Family Mastigocladaceae Geitler (1925) see Family Hapalosiphonaceae Elenkin (1917), nom. cons.
         Subfamily Brachytrichioideae (E. Bornet & C. Flahault) F.E. Fritsch (1945) see Family Symphyonemataceae Hoffmann, Komárek & Kaštovský (2005), nom. inval.
           1 Form genus Adrianema De Toni (1936), nom. illeg. see Genus Lithonema Ercegović 1929
           2 Form genus Brachytrichia G. Zanardini ex Bornet & Flahault (1886) see Genus Brachytrichia Zanardini ex Bornet and Flahault 1886
           3 Form genus Herpyzonema Weber-van Bosse (1913) see Genus Herpyzonema Weber-van Bosse 1913
           4 Form genus Iyengariella Desikachary (1953) see Genus Iyengariella Desikachary 1953
           5 Form genus Parenchymorpha C.K. Tseng & M. Hua (1984) see Genus Parenchymorpha Tseng and Hua 1984
           6 Genus Symphyonema C.C. Jao (1944) see Genus Symphyonema Jao 1944
           7 Form genus Symphyonemopsis G. Tiwari & A. Mitra (1969) see Genus Symphyonemopsis Tiwari and Mitra 1969