| Classification | Plantaginaceae: Penstemon | 
| Barcode(s) | 02002060 | 
| Collector | U. T. Waterfall | 
| Collector number | 3875 | 
| Country | United States of America | 
| State | Texas | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Texas: Hudspeth County | 
| Locality | 4 mi. east of Hueco | 
| Date Collected | 1942-08-15 | 
| Habitat | Growing in reddish sand in a basin between hills | 
| Container | Flora of the Transpecos Region of Southwestern Texas | 
| Project | US and Canada - Mass Digitization | 
| Remarks | in a Yucca-Artemisia-Gutierrezia association | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/0273312b-a177-4a4d-84d5-d0416d482c72 | 
| Harvard University Herbaria Barcode | 02002060 | 
| Herbarium | GH | 
| Family | Plantaginaceae | 
| Determination |  Penstemon ambiguus Torrey | 
| Determination Remarks |  [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |