| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Ruania | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rouxiella silvae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rouxiella chamberiensis T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rouxiella badensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rouxiella | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia terrae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia nasimurium | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia mucilaginosa | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia kristinae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia koreensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia halotolerans | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia endophytica | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia dentocariosa T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia amarae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia aerolata | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia aeria | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rothia | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rossellomorea vietnamensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rossellomorea oryzaecorticis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rossellomorea marisflavi | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rossellomorea enclensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rossellomorea aquimaris T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rossellomorea | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rosistilla oblonga T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rosistilla carotiformis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Rosistilla | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Roseovarius tolerans T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Roseovarius tibetensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Roseovarius spongiae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Roseovarius scapharcae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago |