# List of Clostridium species

As of October 2022, there are 164 validly published species in Clostridium, as well as 38 species described but not validly published.

## Species

* Clostridium aceticum
* Clostridium acetireducens
* Clostridium acetobutylicum
* Clostridium acidisoli
* Clostridium aciditolerans
* Clostridium aestuarii
* Clostridium akagii
* Clostridium algidicarnis
* Clostridium algifaecis
* Clostridium algoriphilum
* Clostridium amazonense
* Clostridium aminophilum
* Clostridium ammoniilyticum
* Clostridium amylolyticum
* Clostridium aquiflavi
* Clostridium arbusti
* Clostridium arcticum
* Clostridium argentinense
* Clostridium aromativorans
* Clostridium aurantibutyricum
* "Clostridium autoethanogenum"
* Clostridium baratii
* Clostridium beihaiense
* Clostridium beijerinckii
** Clostridium diolis
* Clostridium bornimense
* Clostridium botulinum
* Clostridium bovifaecis
* Clostridium bowmanii
* Clostridium budayi
* Clostridium butanoliproducens
* Clostridium butyricum
* Clostridium cadaveris
* Clostridium caldaquaticum
* Clostridium carboxidivorans
* Clostridium carnis
* Clostridium cavendishii
* Clostridium celatum
* "Clostridium cellulofermentans"
* Clostridium cellulosi
* Clostridium cellulovorans
* Clostridium chartatabidum
* Clostridium chauvoei
* Clostridium chromiireducens
* Clostridium chrysemydis
* Clostridium cochlearium
* Clostridium colicanis
* Clostridium colinum
* Clostridium collagenovorans
* Clostridium combesii
* Clostridium composti
* Clostridium cylindrosporum
* Clostridium disporicum
* Clostridium drakei
* Clostridium estertheticum
* Clostridium facile
* Clostridium fallax
* Clostridium felsineum
* Clostridium fermenticellae
* Clostridium fessum
* Clostridium fimetarium
* Clostridium folliculivorans
* Clostridium formicaceticum
* Clostridium frigidicarnis
* Clostridium frigoris
* Clostridium fungisolvens
* Clostridium ganghwense
* Clostridium gasigenes
* Clostridium gelidum
* Clostridium grantii
* Clostridium guangxiense
* Clostridium haemolyticum
* Clostridium herbivorans
* Clostridium homopropionicum
* Clostridium hominis
* Clostridium huakuii
* Clostridium hydrogeniformans
* Clostridium hylemonae
* Clostridium indicum
* Clostridium innocuum
* Clostridium intestinale
* Clostridium isatidis
* Clostridium jeddahense
* Clostridium kluyveri
* Clostridium kogasense
* Clostridium lacusfryxellense
* Clostridium lentum
* Clostridium leptum
* Clostridium liquoris
* Clostridium ljungdahlii
* Clostridium lundense
* Clostridium luticellarii
* Clostridium magnum
* Clostridium malenominatum
* Clostridium manihotivorum
* Clostridium methoxybenzovorans
* Clostridium methylpentosum
* Clostridium mobile
* Clostridium moniliforme
* Clostridium muellerianum
* Clostridium neonatale
* Clostridium neuense
* Clostridium nexile
* Clostridium nitritogenes
* Clostridium nitrophenolicum
* Clostridium novyi
* Clostridium oceanicum
* Clostridium omnivorum
* Clostridium oryzae
* Clostridium pabulibutyricum
* Clostridium paradoxum
* Clostridium paraputrificum
* Clostridium pascui
* Clostridium pasteurianum
* Clostridium peptidivorans
* Clostridium perfringens
* Clostridium phytofermentans
* Clostridium piliforme
* Clostridium polyendosporum
* Clostridium polynesiense
* Clostridium polysaccharolyticum
* Clostridium porci
* Clostridium prolinivorans
* Clostridium psychrophilum
* Clostridium punense
* Clostridium puniceum
* Clostridium putrefaciens
* Clostridium putrificum
* Clostridium quinii
* "Clostridium ragsdalei"
* Clostridium saccharobutylicum
* Clostridium saccharoperbutylacetonicum
* Clostridium sardiniense
* Clostridium sartagoforme
* Clostridium saudiense
* Clostridium scatologenes
* Clostridium schirmacherense
* Clostridium scindens
* Clostridium senegalense
* Clostridium septicum
* Clostridium simiarum
* Clostridium sporogenes
* Clostridium sporosphaeroides
* Clostridium subterminale
* Clostridium sulfidigenes
* Clostridium swellfunianum
* Clostridium symbiosum
* Clostridium tagluense
* Clostridium tanneri
* Clostridium tarantellae
* Clostridium tepidiprofundi
* Clostridium tepidum
* Clostridium tertium
* Clostridium tetani
* Clostridium tetanomorphum
* Clostridium thailandense
* Clostridium thermarum
* Clostridium thermoalcaliphilum
* Clostridium thermobutyricum
* Clostridium thermopalmarium
* Clostridium thermopapyrolyticum
* Clostridium thermosuccinogenes
* Clostridium thiosulfatireducens
* Clostridium tyrobutyricum
* Clostridium uliginosum
* Clostridium vincentii
* Clostridium viride
* Clostridium vitabionis
* Clostridium vulturis
* Clostridium weizhouense
* Clostridium zeae

## Species formerly placed in Clostridium

* Order Caryophanales
** Family Paenibacillaceae
*** Genus Oxalophagus: Clostridium oxalicum, reassigned in 1994.
*** Genus Paenibacillus: Clostridium durum, reassigned in 1994.
* Order Erysipelotrichia
** Family Coprobacillaceae
*** Genus Thomasclavelia: Clostridium cocleatum, C. ramosum, C. saccharogumia and C. spiroforme, reassigned in 2023.
* Order Eubacteriales
** Family Clostridiaceae
*** Genus Asaccharospora: Clostridium irregulare, reassigned in 2014.
*** Genus Caloramator: Clostridium fervidum, reassigned in 1994.
*** Genus Hathewaya: Clostridium histolyticum, C. limosum and C. proteolyticum, reassigned in 2016.
*** Genus Hungatella: Clostridium hathewayi, reassigned in 2014.
*** Genus Intestinibacter: Clostridium bartlettii, reassigned in 2014.
*** Genus Oxobacter: Clostridium pfennigii, reassigned in 1994.
*** Genus Romboutsia: Clostridium lituseburense, reassugned in 2014.
*** Genus Sarcina: Clostridium maximum and C. ventriculi. Originally described in Sarcina, proposed to be moved to Clostridium in 2016 but remained due to Sarcina being the older genus.
*** Genus Terrisporobacter: Clostridium glycolicum and C. mayombei, reassigned in 2014.
** Family Eubacteriaceae
*** Genus Eubacterium: Clostridium barkeri, reassigned in 1994.
** Family Lachnospiraceae
*** Genus Anaerocolumna: Clostridium aminovalericum, C. jejuense and C. xylanovorans, reassigned in 2016.
*** Genus Anaeromicropila: Clostridium populeti, reassigned in 2023.
*** Genus Anaerotignum: Clostridium lactatifermentans, C. neopropionicum and C. propionicum, reassigned in 2017
*** Genus Blautia: Clostridium coccoides, reassigned in 2008.
*** Genus Butyrivibrio: Clostridium proteoclasticum, reassigned in 2008.
*** Genus Cellulosilyticum: C. lentocellum, reassigned in 2010.
*** Genus Enterocloster: Clostridium aldenense, C. asparagiforme, C. bolteae, C. citroniae, C. clostridioforme and C. lavalense, reassigned in 2020.
*** Genus Faecalicatena: Clostridium oroticum, reassigned in 2017.
*** Genus Lacrimispora: Clostridium aerotolerans, C. algidixylanolyticum, C. amygdalinum, C. celerecrescens, C. indolis, C. saccharolyticum, C. sphenoides, C. xylanolyticum
*** Genus Mediterraneibacter: Clostridium glycyrrhizinilyticum, reassigned in 2019
** Family Oscillospiraceae
*** Genus Acetivibrio: Clostridium aldrichii, C. alkalicellulosi, C. clariflavum, C. straminisolvens and C. thermocellum, reassigned in 2019.
*** Genus Flavonifractor: Clostridium orbiscindens, merged with Eubacterium plautii and moved to new genus in 2010.
*** Genus Ruminiclostridium: Clostridium cellobioparum, Clostridium cellulolyticum, Clostridium hungatei, Clostridium josui, Clostridium papyrosolvens, Clostridium sufflavum and Clostridium termitidis reassigned in 2018.
*** Genus Thermoclostridium: Clostridium caenicola and C. stercorarium, reassigned in 2018.
** Family Peptostreptococcaceae
*** Genus Acetoanaerobium: Clostridium sticklandii, reassigned in 2016.
*** Genus Clostridioides: Clostridium difficile and C. mangenotii, reassigned in 2016.
*** Genus Filifactor: Clostridium villosum, reassigned in 1994.
*** Genus Maledivibacter: Clostridium halophilum, reassigned in 2016.
*** Genus Paraclostridium: Clostridium bifermentans, reassigned in 2016. C. ghonii and C. sordellii, were first reassigned to Paeniclostridium in 2016 and merged into Paraclostridium in 2024. Both genera remained in Clostridiaceae until 2024.
*** Genus Paramaledivibacter: Clostridium caminithermale, reassigned in 2016.
*** Genus Peptacetobacter: Clostridium hiranonis, reassigned in 2020.
*** Genus Peptoclostridium: C. litorale, reassigned in 2016.
** Family Syntrophomonadaceae
*** Genus Syntrophospora: Clostridium bryantii, reassigned in 1990.
* Order Fusobacteriales
** Family Fusobacteriaceae
*** Genus Fusobacterium: Clostridium rectum, merged into Fusobacterium mortiferum in 2017.
* Order Halanaerobiales
** Family Halobacteroidaceae
*** Genus Sporohalobacter: Clostridium lortetii, reassigned in 1984.
* Order Selenomonadales
** Family Sporomusaceae
*** Genus Dendrosporobacter: Clostridium quercicolum, reassigned in 2000.
* Order Thermoanaerobacterales
** Family Thermoanaerobacteraceae
*** Genus Moorella: Clostridium thermaceticum and C. thermautotrophicum, reassigned in 1994.
*** Genus Thermoanaerobacter: Clostridium thermohydrosulfuricum and C. thermosulfurigenes, reassigned in 1993 and Clostridium thermocopriae and C. thermosaccharolyticum, reassigned in 1994.
* Order Tissierellales
** Family Gottschalkiaceae
*** Genus Gottschalkia: Clostridium acidurici and C. purinilyticum, first proposed in 2013 together with Clostridium angusta, reassigned in 2017.
** Family Tissierellaceae
*** Genus Schnuerera: Clostridium ultunense, reassigned in 2020.
*** Genus Tissierella: Clostridium hastiforme, reassigned in 1986.
** Unassigned to family
*** Genus Sedimentibacter: C. hydroxybenzoicum, reassigned in 2002.