| Classification | Asteraceae: Silphium |
| Harvard University Herbaria Barcode(s) | 00231735 |
| Type Status | Holotype |
| Collector | J. R. Allison |
| Collector number | 12153 |
| Country | United States of America |
| State | Alabama |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Alabama: Dallas County |
| Locality | Ca. 15.5 km SW of Selma, ca. 17.5 km SE of marion Junction, and ca. 2.4 km WSW of Old Cahaba; S side Co. Rd. 2 at jct. Co. Rd. 9 |
| Date Collected | 1999-08-18 |
| Habitat | prairielike openings over chalk |
| Container | Flora of Alabama |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/79c36f0e-ca34-4e25-b91e-38c2997590bd |
| Harvard University Herbaria Barcode | 00231735 |
| Herbarium | GH |
| Previous ownership | [Ex] Georgia Dept. of Natural Resources Natural Heritage Program |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Silphium perplexum J. R. Allison |
| Determination Remarks | [is filed under name] [is label name] [is Current name] |
| Taxon Reference | (for Silphium perplexum J. R. Allison) Castanea 2001. 66: 188. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
