| Name | Sphaerotilus Kützing |
| Authorship | Kützing |
| Rank | Genus |
| Placed in | Life |
| Contains | Sphaerotilus sp. |
| Remarks | Type S. natans Kützing [Note: According to the Algabase: Sphaerotilus was based on a filamentous bacterium (NOT an alga)] |
| Citation | 1833 Linnaea 8(4): 386 |