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