| Classification | Rhamnaceae: Rhamnus | 
| Classification 1 | Rhamnaceae: Frangula | 
| Harvard University Herbaria Barcode(s) | 00425778 | 
| Collector | P. Rubtzoff | 
| Collector number | 2472 | 
| Country | United States of America | 
| State | California | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: San Francisco County: San Francisco | 
| Locality | Hollow east of Lake Merced, 1/4 miles south of Stanley Drive | 
| Date Collected | 1956-05-24 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/73fda814-0a13-45df-9ea8-429d57ebf558 | 
| Harvard University Herbaria Barcode | 00425778 | 
| Herbarium | GH | 
| Family | Rhamnaceae | 
| Determination | Rhamnus californica Eschscholtz | 
| Determination Remarks | [current name] | 
| Family | Rhamnaceae | 
| Determination | Frangula californica (Eschscholtz) A. Gray | 
| Determination Remarks | [filed under] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |