| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Roseitranquillus sediminis T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Roseateles koreensis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Roseateles amylovorans | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Roseateles albus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Robiginitalea aurantiaca | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Robiginitalea aestuariiviva | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Robbsia betulipollinis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhodopirellula europaea | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhodopirellula bahusiensis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhodococcus antarcticus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhizobium setariae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhizobium rhododendri | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhizobium redzepovicii | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhizobium johnstonii | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhizobium croatiense | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhizobium brockwellii | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rhizobium beringeri | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Rheinheimera oceanensis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Ramlibacter pallidus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Ramlibacter cellulosilyticus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Ramlibacter aurantiacus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Ramlibacter albus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Ralstonia soli | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Ralstonia nicotianae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Ralstonia mojiangensis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Ralstonia chuxiongensis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Psychroserpens ponticola | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Psychrobacillus antarcticus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Pseudophaeobacter profundi | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Pseudooceanicola sediminis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago |