| Name | Oreostemma alpigenum var. haydenii (Porter) G. L. Nesom |
| Authorship | (Porter) G. L. Nesom |
| Rank | Variety |
| Placed in | Oreostemma alpigenum (Torrey & A. Gray) Greene |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Oreostemma alpigenum var. haydenii (Porter) G. L. Nesom |
| Identification made in | 2017 (4) |
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