| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Yaniellaceae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylophilus ampelinus T | ||||
| Xylophilus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylella taiwanensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylella fastidiosa subsp. multiplex | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylella fastidiosa T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylella fastidiosa subsp. fastidiosa | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylella | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanivirga thermophila T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanivirga | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanivirgaceae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanimonas ulmi | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanimonas pachnodae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanimonas cellulosilytica T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanimonas allomyrinae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanimonas | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanibacillus composti T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xylanibacillus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xinfangfangia soli T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xinfangfangia humi | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xinfangfangia | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus vietnamensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus thuongxuanensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus szentirmaii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus stockiae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus romanii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus poinarii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus nematophila T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus miraniensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Xenorhabdus mauleonii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago |