| Name | Fontinalis antipyretica var. ambigua Cardot |
| Authorship | Cardot |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Fontinalis antipyretica Hedwig |
| Citation | 1891 Rev. Bryol. 18: 82 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Fontinalis antipyretica var. ambigua Cardot |
| Identification made in | [no date] (1) |