| Classification | Asteraceae: Silphium |
| Harvard University Herbaria Barcode(s) | 00012385 |
| Type Status | Holotype |
| Collector | C. Wright |
| Country | United States of America |
| State | Texas |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Texas |
| Date Collected | 1848 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/63e5e54f-50aa-4cf4-a097-3dcf1927eeea |
| Harvard University Herbaria Barcode | 00012385 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Silphium radula var. radula |
| Determined by | J. A. Clevinger |
| Determination Remarks | [is Current name] |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Silphium simpsonii var. wrightii L. M. Perry |
| Verified by | J. A. Clevinger |
| Taxon Reference | (for Silphium simpsonii var. wrightii L. M. Perry) Rhodora 1937. 39: 288. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
