| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Zhongshania marina | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zhongshania ponticola | Unknown | Valid (ICNP) | Excubia bot about 2 years ago | |
| Zhouia | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zhouia amylolytica T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zhouia spongiae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zimmermannella | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zimmermannella alba | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zimmermannella bifida | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Zimmermannella faecalis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Zimmermannella helvola T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Zobellella | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellella aerophila | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellella denitrificans T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellella endophytica | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellella iuensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Zobellella maritima | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellella taiwanensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellia | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellia alginiliquefaciens | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Zobellia amurskyensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellia barbeyronii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Zobellia galactanivorans T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellia galactanovorans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Zobellia laminariae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellia nedashkovskayae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellia roscoffensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellia russellii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zobellia uliginosa | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Zongyangia | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Zongyangia hominis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |