| Name | Gloeocapsa opaca Nägeli ex Kützing |
| Authorship | Nägeli ex Kützing |
| Rank | Species |
| Placed in | Gloeocapsa Kützing |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Gloeocapsa opaca Nägeli ex Kützing |
| Identification made in | [no date] (1) |