| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Sinorhizobium medicae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium kummerowiae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium kostiense | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium glycinis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium garamanticum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium fredii T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium arboris | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium americanus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium americanum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinorhizobium alkalisoli | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinomicrobium weinanense | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinomicrobium kalidii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinococcus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinococcus qinghaiensis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinobacter | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinobacter flavus T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinisalibacter | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sinisalibacter lacisalsi T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Singularimonas | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Singularimonas variicoloris T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Simonsiella steedae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Simonsiella crassa | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Silvibacterium dinghuense | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Silicibacter | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Silicibacter pomeroyi | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Silicibacter lacuscaerulensis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sideroxyarcus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sideroxyarcus emersonii T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Siccirubricoccus phaeus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Siansivirga jejunensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |