| Name | Schizosiphon hirudinosus Cesati |
| Authorship | Cesati |
| Rank | Species |
| NomenclaturalStatus | NomInvalid |
| Placed in | Schizosiphon Kützing |
| Citation | 1856 Algen Sachsens 53/54: no. 534 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Schizosiphon hirudinosus Cesati |
| Identification made in | [no date] (1) |