| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Clostridium lituseburense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium litorale | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium limosum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium lentum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium lentoputrescens | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium lentocellum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium lavalense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium laramiense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium laramie | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium lactatifermentans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium kogasensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium josui | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium jejuense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium irregularis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium irregulare | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium intestinalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium indolis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium hydroxybenzoicum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium hungatei | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium hominis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium histolyticum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium hiranonis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium hemolyticum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium hathewayi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium hastiforme | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium halophilum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium halophilium | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium glycyrrhizinilyticum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium glycolicum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Clostridium ghonii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |