| Name | Trifolium haydenii Porter |
| Authorship | Porter |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Trifolium Linnaeus |
| GUID | urn:lsid:ipni.org:names:523205-1 |
| Citation | 1872 Prelim. Rep. U.S. Geol. Surv. Montana 1871: 480 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Trifolium haydenii Porter |
| Identification made in | [no date] (10) |