| Name | Arnica tomentosa Greene |
| Authorship | Greene |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Arnica Linnaeus |
| Citation | 1899 Ottawa Naturalist 166 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Arnica tomentosa Greene |
| Identification made in | [no date] (1) |