| Barcode(s) | 00067583 | 
| Type Status | Isosyntype | 
| Collector | E. Hall | 
| Country | United States of America | 
| State | Illinois | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Illinois: Menard County | 
| Date Collected | 1861 | 
| Remarks | Isolectotype, = Hypericum gymnanthum Engelm. & A. Gray, det. D. H. Webb, 1980 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f8fd40e6-1445-4385-bc0d-0dbbcd9356a2 | 
| Harvard University Herbaria Barcode | 00067583 | 
| Herbarium | GH | 
| Type Status |  Isosyntype | 
| Isosyntype of |  Hypericum canadense var. cardiophyllum R. Keller | 
| Verified by | D. H. Webb | 
| Taxon Reference | (for  Hypericum canadense var. cardiophyllum R. Keller) Bull. Herb. Boissier 1908. ser. 2, 8: 189. | 
| Determination |  Hypericum gymnanthum Engelmann & A. Gray | 
| Determined by | D. H. Webb | 
| Determination Remarks |  [current name] | 
| Sex | not determined | 
| Phenology | Fruit | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |