| Name | Alnus serrulata var. oblongifolia (Torrey) Regel |
| Authorship | (Torrey) Regel |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Alnus serrulata (Aiton) Willdenow |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Alnus serrulata var. oblongifolia (Torrey) Regel |
| Identification made in | [no date] (2) |
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