| Name | Penstemon isophyllus B. L. Robinson |
| Authorship | B. L. Robinson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon Schmidel |
| GUID | urn:lsid:ipni.org:names:187558-2 |
| Citation | Proc. Boston Soc. Nat. Hist. 31: 267 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Penstemon isophyllus B. L. Robinson |
| Identification made in | [no date] (1) |
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