| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Brevibacterium acetylicum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Brevibacillus marinus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Brevibacillus dissolubilis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Brevibacillus composti | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Brenneria tiliae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Brenneria quercina | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Brenneria paradisiaca | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Branhamella | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Branhamella catarrhalis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium semiaridum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium hereditatis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium diazoefficiens | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium cytisi | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium centrosemae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium cenepequi | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium barranii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium barranii subsp. barranii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium barranii subsp. apii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bradyrhizobium australafricanum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Brachybacterium kimchii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Brachybacterium halotolerans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bowmanella pacificus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bowdenia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Bowdenia nasicola T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Botrimarina hoheduenensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Borreliella | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Borreliella yangtzensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Borreliella valaisiana | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Borreliella spielmanii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Borreliella sinica | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |