| Name | Sphagnum garberi f. sphaerocephalum Warnstorf |
| Authorship | Warnstorf |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Sphagnum garberi Lesq. & James |
| Citation | 1893 Hedwigia 32: 15 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sphagnum garberi f. sphaerocephalum Warnstorf |
| Identification made in | [no date] (1) |