| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Bacillus alkalinitrilicus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus alkalilacus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus alkalidiazotrophicus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus alkalicola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus alkalicellulosilyticus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus alginolyticus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus algicola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus alcalophilus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus akibai | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus aidingensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus agri | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus agaradhaerens | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus acidoterrestris | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus acidocaldarius | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus aciditolerans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus acidiproducens | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus acidinfaciens | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus acidiceler | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus acanthi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Bacillus abyssalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azotobacter paspali | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azotobacter nigricans subsp. achromogenes | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azotobacter macrocytogenes | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azospirillum largomobile | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azospirillum irakense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azospirillum cavernae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azospirillum brasiliense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azospirillum argentinense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azospirillum amazonense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Azospira inquinata | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |