Phylum Chloroflexi Garrity and Holt 2002 stat. inval. see Phylum Chloroflexota Garrity and Holt 2021
   Chloroflexi "Castenholz 2001" nom. inval. see Class Chloroflexia corrig. Gupta et al. 2013
     1.1.1 Genus Chloroflexus Pierson and Castenholz 1974 (Approved Lists 1980)
     1.1.2 Genus Oscillochloris Gorlenko and Pivovarova 1989
     1.2 Genus Roseiflexus Hanada et al. 2002
     2 Genus Herpetosiphon Holt and Lewin 1968 (Approved Lists 1980)