| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Rivihabitans pingtungensis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Rhizohabitans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Rhizohabitans arisaemae T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Rhizobium acaciae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Rhabdonatronobacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Rhabdonatronobacter sediminivivens T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Rathayibacter rubneri | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Ramlibacter paludis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Qipengyuania spongiae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pyxidicoccus xibeiensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Psychroserpens magnus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Psychroserpens luteus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Psychroserpens luteolus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Psychroserpens algicola | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudomonas phenazinia | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudomonas atagosis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudofrankia | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudofrankia saprophytica | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudofrankia inefficax T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudofrankia asymbiotica | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudodesulfovibrio nedwellii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudidiomarina mangrovi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pseudidiomarina andamanensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Protofrankia | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Protofrankia coriariae T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Protofrankia coriaria | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Prevotella merdae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pleomorpha | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Pleomorpha daqingensis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Plantactinospora alkalitolerans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |