| Name | Sphagnum microcarpum Warnstorf |
| Authorship | Warnstorf |
| Rank | Species |
| Placed in | Sphagnum |
| Citation | 1891 Hedwigia 30: 170 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Sphagnum microcarpum Warnstorf |
| Identification made in | [no date] (5) |