| 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) |
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