| Name | Drepanocladus fluitans var. gracilis Warnstorf |
| Authorship | Warnstorf |
| Rank | Variety |
| Placed in | Drepanocladus fluitans (Hedwig) Warnstorf |
| Citation | 1906 Krypt.-fl. Brandenburg 1043 |
| Holdings | 14 Specimens held in the Harvard University Herbaria identified as Drepanocladus fluitans var. gracilis Warnstorf |
| Identification made in | [no date] (14) |