| Name | Hypnum uncinatum var. gracillimum Berggren |
| Authorship | Berggren |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Hypnum uncinatum Hedwig |
| Citation | 1875 Kongl. Svenska Vetensk. Acad. Handl. 13(7): 86 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Hypnum uncinatum var. gracillimum Berggren |
| Identification made in | [no date] (1) |