| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Clostridium vincentii | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium uliginosum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium tyrobutyricum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium thiosulfatireducens | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium thermosuccinogenes | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium thermopalmarium | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium thermobutyricum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium thermoalcaliphilum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium thermarum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium tetanomorphum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium tetani | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium tertium | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium tepidum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium tepidiprofundi | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium tarantellae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium tagluense | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium symbiosum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium swellfunianum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium sulfidigenes | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium subterminale | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium sporosphaeroides | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium sporogenes | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium spiroforme | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium septicum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium senegalense | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium scindens | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium schirmacherense | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium scatologenes | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium saudiense | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Clostridium sartagoforme | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago |