| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Azotobacter nigricans subsp. nigricans | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azotobacter chroococcum subsp. isscasi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azotobacter chroococcum T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azotobacter chroococcum subsp. chroococcum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azotobacter bryophylli | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azotobacter beijerinckii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azotobacter armeniacus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azotobacter | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum zeae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum thiophilum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum thermophilum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum soli | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum rugosum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum ramasamyi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum picis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum palustre | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum oryzae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum melinis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum lipoferum T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum largimobile | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum humicireducens | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum halopraeferens | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum griseum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum formosense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum fermentarium | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum doebereinerae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum canadense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum brasilense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum baldaniorum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Azospirillum agricola | Unknown | Valid (ICNP) | Excubia bot over 4 years ago |