| Name | Penstemon floridus var. austinii (Eastwood) N. H. Holmgren |
| Authorship | (Eastwood) N. H. Holmgren |
| Rank | Variety |
| Placed in | Penstemon floridus Brandegee |
| Citation | 1979 Brittonia 31: 105 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Penstemon floridus var. austinii (Eastwood) N. H. Holmgren |
| Identification made in | [no date] (3) |
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