[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Chloroflexi" Garrity and Holt 2002 stat. inval. see Phylum Chloroflexota Garrity and Holt 2021
       Class "Chloroflexi" "Castenholz 2001" nom. inval. see Class Chloroflexia corrig. Gupta et al. 2013
         Order "Herpetosiphonales" "Castenholz 2001" nom. nud. see Order Herpetosiphonales Gupta et al. 2013
           Family "Herpetosiphonaceae" "Castenholz 2001" nom. nud. see Family Herpetosiphonaceae 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)