| Name | Silphium perplexum J. R. Allison |
| Authorship | J. R. Allison |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Silphium |
| Remarks | Allison and Stevens, "Vascular Flora of Ketona Dolomite Outcrops in Bibb County, Alabama." |
| GUID | urn:lsid:ipni.org:names:1021503-1 |
| Citation | 2001 Castanea 66: 188 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Silphium perplexum J. R. Allison |
| Identification made in | [no date] (1) |
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