| Name | Calothrix fasciculata C. Agardh |
| Authorship | C. Agardh |
| Rank | Species |
| Placed in | Calothrix C. Agardh ex Bornet & Flahault |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Calothrix fasciculata C. Agardh |
| Identification made in | [no date] (1) |