| Name | Arnica caespitosa A. Nelson |
| Authorship | A. Nelson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Arnica Linnaeus |
| GUID | urn:lsid:ipni.org:names:19888-2 |
| Citation | 1900 Bot. Gaz. 30: 203 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Arnica caespitosa A. Nelson |
| Identification made in | [no date] (2) |