| Classification | Rhamnaceae: Rhamnus | 
| Classification 1 | Rhamnaceae: Frangula | 
| Harvard University Herbaria Barcode(s) | 00267607 | 
| Type Status | Isotype | 
| Collector | K. T. Hartweg | 
| Collector number | 1686 | 
| Country | United States of America | 
| State | California | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/3edf4415-72f7-454a-a0db-92a28abe3c90 | 
| Harvard University Herbaria Barcode | 00267607 | 
| Herbarium | GH | 
| Family | Rhamnaceae | 
| Type Status | Isotype | 
| Isotype of | Rhamnus tomentella Bentham | 
| Verified by | W. T. Kittredge | 
| Date Determined | 2008 | 
| Taxon Reference | (for  Rhamnus tomentella Bentham) Pl. Hartw. 1949. 303. | 
| Family | Rhamnaceae | 
| Determination | Frangula californica subsp. tomentella (Bentham) Kartesz & Gandhi | 
| Determined by | W. T. Kittredge | 
| Date Determined | 2008 | 
| Determination Remarks | [current name] | 
| Family | Rhamnaceae | 
| Determination | Rhamnus tomentella Bentham | 
| Determined by | A. Gray | 
| Determination Remarks | [A. Gray (scripsit)] [label name] | 
| Annotation Text | pl. Hartw. cf. R. laurifolius Nutt. | 
| Family | Rhamnaceae | 
| Determination | Rhamnus californica var. tomentella (Bentham) W. H. Brewer ex S. Watson | 
| Determined by | W. Trelease | 
| Annotation Text | W.T. | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed | 
| Item Remarks | [mounted with non-type specimens of Fremont 499, 267608, and Bigelow s.n., 267609] |