| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Zooshikella | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zooshikella ganghwensis T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zooshikella harenae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zooshikella marina | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zophobihabitans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zophobihabitans entericus T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zuelzera | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zuelzera stenostrepta T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zunongwangia | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zunongwangia atlantica | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zunongwangia endophytica | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zunongwangia flava | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zunongwangia mangrovi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zunongwangia pacifica | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zunongwangia profunda T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zwartia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zwartia hollandica T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zwartia panacis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Zwartia vadi | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Zymobacter | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zymobacter palmae T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zymomonadaceae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zymomonas | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zymomonas mobile | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zymomonas mobilis T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zymomonas mobilis subsp. francensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zymomonas mobilis subsp. mobilis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zymomonas mobilis subsp. pomaceae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zymophilus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Zymophilus paucivorans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |