| Name | Nostoc itzigsohnii Rabenhorst |
| Authorship | Rabenhorst |
| Rank | Species |
| NomenclaturalStatus | NomInvalid |
| Placed in | Nostoc Vaucher ex Bornet & Flahault |
| Remarks | pre-starting-point name.] |
| Citation | 1865 Fl. Eur. Alg. 2: 168 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Nostoc itzigsohnii Rabenhorst |
| Identification made in | [no date] (1) |
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