| Name | Arnica trina A. Nelson |
| Authorship | A. Nelson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Arnica Linnaeus |
| GUID | urn:lsid:ipni.org:names:20108-2 |
| Citation | 1934 Amer. J. Bot. 21: 581 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Arnica trina A. Nelson |
| Identification made in | [no date] (1) |
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