| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| “Xenolissoclinum” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xenolissoclinum pacificiensis” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xenophilus intermedius” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xenorhabdus anantnagensis” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xenorhabdus bakwenae” | Unknown | Automated discovery | Excubia bot about 1 year ago | |
| “Xenorhabdus bharatensis” | Unknown | Automated discovery | Excubia bot about 1 year ago | |
| “Xenorhabdus entomophaga” | Unknown | Automated discovery | Excubia bot about 1 year ago | |
| “Xenorhabdus littoralis” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xenorhabdus nematophila subsp. pekingensis” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xenorhabdus santafensis” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xenorhabdus siamensis” | Unknown | Automated discovery | Excubia bot about 1 year ago | |
| “Xenorhabdus taiwanensis” | Unknown | Automated discovery | Excubia bot about 1 year ago | |
| “Xenorhabdus thailandensis” | Unknown | Automated discovery | Excubia bot about 1 year ago | |
| “Xiamenia agrestimuris” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xiamenia aquisgranensis” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xianfuyuplasma coldseepsis” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xiphinematobacteraceae” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xomosiella” | Unknown | Automated discovery | Excubia bot 8 months ago | |
| “Xomosiella audyi” | Unknown | Automated discovery | Excubia bot 8 months ago | |
| “Xylanimonas oleitrophica” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xylanimonas puerhi” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xylella fastidiosa subsp. morus” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xylella fastidiosa subsp. pauca” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xylella fastidiosa subsp. sandyi” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Xylophilus rhododendri” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Yaniella coprophila” | Unknown | Automated discovery | Excubia bot over 1 year ago | |
| “Yaniella helvetica” | Unknown | Automated discovery | Excubia bot over 1 year ago | |
| “Yanshouia” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Yanshouia hominis” | Unknown | Automated discovery | Excubia bot over 2 years ago | |
| “Yeguia” | Unknown | Automated discovery | Excubia bot over 2 years ago |