| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Rubripirellula lacrimiformis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rubinisphaera margarita | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ruania suaedae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ruania halotolerans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ruania alkalisoli | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rouxiella aceris | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rothia dentocariosus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rossellomorea arthrocnemi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosistilla ulvae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseovarius sediminilitoris | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseovarius marinus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseovarius halocynthiae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseovarius crassostreae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseovarius carneus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseomonas rubea | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseomonas rosea | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseomonas ponticola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseomonas oleicola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseomonas ludipueritiae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseomonas fauriae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseomonas acroporae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseococcus pinisoli | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseococcus microcysteis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseobacter gallaeciensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseobacter algicola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella australoborealis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseivivax roseus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseivivax pacificus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseivivax atlanticus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseimaritima multifibrata | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |