| Name | Penstemon euglaucus English | 
| Authorship | English | 
| Rank | Species | 
| Placed in | Penstemon Schmidel | 
| Citation | 1928 Proc. Biol. Soc. Washington 41(45): 197–198 | 
| Holdings | 19 Specimens held in the Harvard University Herbaria identified as Penstemon euglaucus English | 
| Identification made in | [no date] (19) |