| Classification | Asteraceae: Silphium |
| Barcode(s) | 00096484 |
| Type Status | Holotype |
| Collector | M. L. Fernald & B. H. Long |
| Collector number | 9199 |
| Country | United States of America |
| State | Virginia |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Virginia: Greensville County |
| Locality | North of Emporia, rich deciduous woods by Three Creek |
| Date Collected | 1938-08-20 |
| Remarks | = Silphium asteriscus L. subsp. trifoliatum (L.) x subsp. asteriscus, det. W. R. Weber & T. R. Fisher, Nov 1967 = Silphium asteriscus L. subsp. trifoliatum (L.) J. A. Clevinger, det. J. A. Clevinger, Jul 1999 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/e0ab6b6e-e5ad-41a6-a75d-80f0a9a9236e |
| Harvard University Herbaria Barcode | 00096484 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Silphium atropurpureum f. hirticaule Fernald |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Silphium atropurpureum f. hirticaule Fernald) Rhodora 1939. 41: 573. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
