| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Rosenbergiella epipactidis subsp. japonicus | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rosenbergiella epipactidis subsp. japonica | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rosenbergiella epipactidis subsp. epipactidis | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rosenbergiella epipactidis subsp. californiensis | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Robiginitalea marina | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rivihabitans | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rivihabitans pingtungensis | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rhizohabitans | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rhizohabitans arisaemae | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rhizobium acaciae | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rhabdonatronobacter | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rhabdonatronobacter sediminivivens | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Rathayibacter rubneri | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Ramlibacter paludis | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Qipengyuania spongiae | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pyxidicoccus xibeiensis | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Psychroserpens magnus | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Psychroserpens luteus | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Psychroserpens luteolus | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Psychroserpens algicola | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudomonas phenazinia | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudomonas atagosis | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudofrankia | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudofrankia saprophytica | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudofrankia inefficax | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudofrankia asymbiotica | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudodesulfovibrio nedwellii | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudidiomarina mangrovi | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Pseudidiomarina andamanensis | Unknown | Valid (ICNP) | Excubia bot about 1 year ago | |
| Protofrankia | Unknown | Valid (ICNP) | Excubia bot about 1 year ago |