| Name | Fontinalis antipyretica var. gigantea (Sullivant) Sullivant |
| Authorship | (Sullivant) Sullivant |
| Rank | Variety |
| Placed in | Fontinalis antipyretica Hedwig |
| Citation | 1864 Icon. Musc. (Hampe) 106. 66. |
| Holdings | 167 Specimens held in the Harvard University Herbaria identified as Fontinalis antipyretica var. gigantea (Sullivant) Sullivant |
| Identification made in | [no date] (166), 2016 (1) |