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 Genus Herpetosiphon Holt and Lewin 1968 (Approved Lists 1980) 1 Herpetosiphon aurantiacus Holt and Lewin 1968 (Approved Lists 1980) 2 Herpetosiphon geysericola (Copeland 1936) Lewin 1970 (Approved Lists 1980)