| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Acidiphilium facilis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acidiphilium facile | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acidiphilium aminolytica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acidiphilium aminilyticum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acidimangrovimonas indica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acidihalobacter prosperus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acidicaldus organivorus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acidaminococcus hominis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Achromobacter xylosoxidans subsp. xylosoxidans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Achromobacter xylosoxidans subsp. denitrificans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Achromobacter spiritinus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Achromobacter sediminum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Achromatium | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Achromatium oxaliferum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acholeplasma seiffertii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acholeplasma florum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acholeplasma entomophilum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetothermus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetothermus paucivorans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetomicrobium faecalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetomicrobium faecale | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetogenium | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetogenium kivui | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetofilamentum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetofilamentum rigidum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetobacter xylinus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetobacter xylinus subsp. xylinus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetobacter xylinus subsp. sucrofermentans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetobacter xylinum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acetobacter xylinum subsp. xylinum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |