| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Silvania confinis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Shimia ponticola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Shewanella septentrionalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Shewanella holmiensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Sellimonas catena | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Scleromatobacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Scleromatobacter humisilvae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Sandaracinobacteroides sayramense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Salinimicrobium profundisediminis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Salella | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Salella cibi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseovarius autotrophicus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseomonas fluvialis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Roseobacter insulae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella nectarea subsp. nectarea | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella nectarea subsp. apis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella metrosideri | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella gaditana | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella epipactidis subsp. japonicus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella epipactidis subsp. japonica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella epipactidis subsp. epipactidis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rosenbergiella epipactidis subsp. californiensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Robiginitalea marina | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rivihabitans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rivihabitans pingtungensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rhizohabitans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rhizohabitans arisaemae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rhizobium acaciae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rhabdonatronobacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Rhabdonatronobacter sediminivivens | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |