| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Xylanibacter rara | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xylanibacter oryzae T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xylanibacter muris | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xylanibacter brevis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xuhuaishuia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xuhuaishuia manganoxidans T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xiangella | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xiangella phaseoli T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xiamenia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xiamenia xianingshaonis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophilus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophilus subsp. poinarii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophilus subsp. nematophilus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophilus subsp. bovienii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophilus subsp. bovenii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophilus subsp. beddingii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophila subsp. poinarii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophila subsp. nematophila | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophila subsp. bovienii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus nematophila subsp. beddingii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus luminescens | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus lircayensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xenorhabdus japonicus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xaviernesmea | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xaviernesmea rhizosphaerae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xaviernesmea oryzae T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xanthomonas youngii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xanthomonas maltophilia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xanthomonas hydrangeae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Xanthomonas gardneri | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |