| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Yangia mangrovi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanimicrobium | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanimicrobium pachnodae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanibacterium | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanibacterium ulmi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanibacter ruminicola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanibacter rodentium | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanibacter rarus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanibacter rara | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Xylanibacter oryzae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| 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 |