| Classification | Rhamnaceae: Rhamnus |
| Harvard University Herbaria Barcode(s) | 00260446 |
| Type Status | Isotype |
| Collector | E. B. Copeland |
| Country | United States of America |
| State | California |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: Siskiyou County: Sisson |
| Locality | 3600 feet |
| Date Collected | 1903-08-15 |
| Elevation | 1097 m |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/ad57da48-7ee2-4a78-b30c-7eafa4bba3ab |
| Harvard University Herbaria Barcode | 00260446 |
| Herbarium | ECON |
| Family | Rhamnaceae |
| Type Status | Isotype |
| Isotype of | Rhamnus obtusissima Greene |
| Taxon Reference | (for Rhamnus obtusissima Greene) Leafl. Bot. Observ. Crit. 1: 64. |
| Family | Rhamnaceae |
| Determination | Rhamnus rubra subsp. obtusissima (Greene) C. B. Wolf |
| Determination Remarks | [current name] |
| Family | Rhamnaceae |
| Determination | Rhamnus rubra var. obtusissima (Greene) Jepson |
| Determined by | A. F. Hubbard |
| Date Determined | 1946-11-05 |
| Annotation Text | A. F. H. |
| Accession Number | ECON 5049 |
| Sex | not determined |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
