| Classification | Plantaginaceae: Penstemon | 
| Harvard University Herbaria Barcode(s) | 00091537 | 
| Type Status | Type | 
| Collector | C. G. Pringle | 
| Collector number | 8568 | 
| Country | Mexico | 
| State | Puebla | 
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Puebla | 
| Locality | Hills above Chalchicomula, 9000 feet | 
| Date Collected | 1901-08-13 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/93f4b50b-cfe8-43d6-80b2-f55fedc9193f | 
| Harvard University Herbaria Barcode | 00091537 | 
| Herbarium | GH | 
| Family | Plantaginaceae | 
| Type Status | Type | 
| Type of | Penstemon isophyllus B. L. Robinson | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Penstemon isophyllus B. L. Robinson) Proc. Boston Soc. Nat. Hist.  31: 267. | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |