| Name | Drepanocladus fluitans subsp. exannulatus (Schimper) Renauld |
| Authorship | (Schimper) Renauld |
| Rank | Subspecies |
| Placed in | Drepanocladus fluitans (Hedwig) Warnstorf |
| Citation | 1909 Rev. Bryol. 39: 137 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Drepanocladus fluitans subsp. exannulatus (Schimper) Renauld |
| Identification made in | [no date] (1) |