| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Microbacterium nanhaiense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium murale | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium mitrae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium maritypicum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium marinum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium marinilacus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium mangrovi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium luticocti | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium luteolum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium lushaniae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium liquefaciens | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium lindanitolerans | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium lemovicicum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium laevaniformans | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium lacusdiani | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium lacus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium lacticum T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium kyungheense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium kribbense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium koreense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium kitamiense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium ketosireducens | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium keratanolyticum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium karelineae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium jejuense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium invictum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium insulae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium indicum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium imperiale | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Microbacterium immunditiarum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago |