| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Roseobacter gallaeciensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseobacter algicola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Rosenbergiella australoborealis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseivivax roseus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseivivax pacificus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseivivax atlanticus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseimaritima multifibrata | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseicella aerolata | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseibium limicola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseburia zhanii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseburia lenta | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseburia difficilis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseburia amylophila | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseateles toxinivorans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseateles saccharophilus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseateles puraquae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseateles oligotrophus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseateles noduli | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseateles chitosanitabidus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseateles chitinivorans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Roseateles asaccharophilus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Romeriopsis | ||||
| Romeriopsis navalis T | ||||
| Romeriopsis marina | ||||
| Romboutsia faecis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Rochalimaea | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Rochalimaea vinsonii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Rochalimaea quintana T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Rochalimaea henselae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Rochalimaea elizabethae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |