| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Massilia atriviolacea | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia arvi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia armeniaca | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia arenosa | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia arenae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia aquatica | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia alkalitolerans | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia albidiflava | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia agri | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia agilis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia aerilata | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Massilia | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marvinbryantia formatexigens T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marvinbryantia | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella suaedae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella radicis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella mediterranea T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella mangrovi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella lutilitoris | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella limonii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella endophytica | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella caricis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Martelella | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marortus luteolus T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marortus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marmoricola terrae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marmoricola solisilvae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marmoricola silvestris | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marmoricola scoriae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Marmoricola pocheonensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago |