| Classification | Plantaginaceae: Penstemon | 
| Harvard University Herbaria Barcode(s) | 00091295 | 
| Type Status | Isosyntype | 
| Collector | C. A. Purpus | 
| Collector number | 5346 | 
| Country | United States of America | 
| State | California | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California | 
| Locality | Argus Mountains, sandy places, 4000-5000 feet | 
| Date Collected | 1897-09-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/6f7de52f-e460-4497-9669-8fffeaac8150 | 
| Harvard University Herbaria Barcode | 00091295 | 
| Herbarium | GH | 
| Family | Plantaginaceae | 
| Type Status | Isosyntype | 
| Isosyntype of | Penstemon incertus Brandegee | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Penstemon incertus Brandegee) Bot. Gaz.  27: 454. | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |