| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Microvirga solisilvae | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Micromonospora tarensis | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Micromonospora parastrephiae | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microcella pacifica | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microcella humidisoli | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microcella daejeonensis | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microcaldus | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microcaldus variisymbioticus T | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microbacterium thalli | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microbacterium plantarum | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microbacterium nymphoidis | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microbacterium neungamense | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microbacterium memoriense | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Microbacterium festucae | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methylococcus mesophilus | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methylobacterium planium | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methylobacterium planeticum | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methylacidiphilum | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methylacidiphilum kamchatkense T | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methylacidiphilum caldifontis | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methanovulcanius | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methanovulcanius yangii T | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methanolobus sediminis | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Methanolobus mangrovi | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Mesoterricola | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Mesoterricola silvestris T | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Mesoterricola sediminis | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Mesorhizobium liriopis | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Mesopusillimonas | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Mesopusillimonas faecipullorum T | Unknown | Valid (ICNP) | Excubia bot about 2 years ago |