| Name | Nostoc rufescens C. Agardh |
| Authorship | C. Agardh |
| Rank | Species |
| NomenclaturalStatus | NomInvalid |
| Placed in | Nostoc Vaucher ex Bornet & Flahault |
| Remarks | Validity of Nostocales names start from 1886 |
| Citation | 1824 Syst. Alg. 22 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Nostoc rufescens C. Agardh |
| Identification made in | [no date] (1) |
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