| Name | Batrachospermum vagum var. keratophytum (Bory) Sirodot |
| Authorship | (Bory) Sirodot |
| Rank | Variety |
| Placed in | Batrachospermum vagum (Roth) C. Agardh |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Batrachospermum vagum var. keratophytum (Bory) Sirodot |
| Identification made in | [no date] (1) |