| Name | Nostoc commune Vaucher ex Bornet & Flahault |
| Authorship | Vaucher ex Bornet & Flahault |
| Rank | Species |
| Placed in | Nostoc Vaucher ex Bornet & Flahault |
| Contains | Nostoc commune var. fuscum Kützing |
| Holdings | 22 Specimens held in the Harvard University Herbaria identified as Nostoc commune Vaucher ex Bornet & Flahault |
| Identification made in | [no date] (20), 1938 (2) |
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