| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Mesorhizobium waimense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium tianshanense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium thiogangeticum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium terrae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium temperatum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium tarimense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium tamadayense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium sophorae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium soli | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium silamurunense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium shonense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium shangrilense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium septentrionale | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium sediminum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium sanjuanii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium sangaii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium robiniae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium qingshengii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium prunaredense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium plurifarium | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium opportunistum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium olivaresii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium oceanicum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium norvegicum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium newzealandense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium muleiense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium metallidurans | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium mediterraneum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium loti T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Mesorhizobium kowhaii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago |