| Name | Sphagnum palustre var. congestum (Roll) Bottini |
| Authorship | (Roll) Bottini |
| Rank | Variety |
| Placed in | Sphagnum palustre Linnaeus |
| Citation | 1919 Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis. ser. 3, 13(1): 73 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sphagnum palustre var. congestum (Roll) Bottini |
| Identification made in | [no date] (1) |