| Name | Sambucus mexicana f. caudata Schwerin |
| Authorship | Schwerin |
| Rank | Forma |
| Placed in | Sambucus mexicana C. Presl ex de Candolle |
| Citation | 1920 Mitt. Deutsch. Dendrol. Ges. 29: 215 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sambucus mexicana f. caudata Schwerin |
| Identification made in | 2015 (1) |