| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Bifidobacterium ramosum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium pullorum subsp. saeculare | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium pullorum subsp. pullorum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium pullorum subsp. gallinarum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium pullorum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium psychraerophilum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium pseudolongum subsp. pseudolongum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium pseudolongum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium pseudocatenulatum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium primatium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium porcinum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium parmae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium panos | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium olomucense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium oedipodis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium myosotis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium moukalabense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium moraviense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium mongoliense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium minimum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium merycicum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium margollesii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium magnum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium longum subsp. suis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium longum subsp. suillum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium longum subsp. longum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium longum subsp. infantis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium longum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium leontopitheci | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium lemurum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |