| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Spelaeibacter cavernicola T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Soonwooa buanensis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Solihabitans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Solihabitans fulvus T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Solicola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Solicola gregarius T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sodalis ligni | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Snodgrassella gandavensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Snodgrassella communis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sneathiella sedimenti | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sneathiella marina | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Slackia heliotrinreducens | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Skermanella xinjiangensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhodobacter | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhodobacter populi | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhodobacter huangdaonensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhodobacter ferrireducens T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium xinjiangensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium xinjiangense | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium terangae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium teranga | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium sojae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium shofinae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium saheli | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium psoraleae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium numidicum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium morelense | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium mexicanum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium meliloti | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |