| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Xylanibacter muris | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanibacter brevis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xuhuaishuia | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xuhuaishuia manganoxidans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xiangella | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xiangella phaseoli | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xiamenia | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xiamenia xianingshaonis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophilus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophilus subsp. poinarii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophilus subsp. nematophilus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophilus subsp. bovienii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophilus subsp. bovenii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophilus subsp. beddingii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophila subsp. poinarii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophila subsp. nematophila | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophila subsp. bovienii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus nematophila subsp. beddingii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus luminescens | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus lircayensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xenorhabdus japonicus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xaviernesmea | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xaviernesmea rhizosphaerae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xaviernesmea oryzae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xanthomonas youngii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xanthomonas maltophilia | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xanthomonas hydrangeae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xanthomonas gardneri | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xanthomonas fuscans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xanthomonas fuscans subsp. fuscans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |