| Name | Umbilicaria americana Poelt & T. H. Nash |
| Authorship | Poelt & T. H. Nash |
| Rank | Species |
| Placed in | Umbilicaria Hoffmann |
| Citation | 1993 Bryologist 96(3): 425 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Umbilicaria americana Poelt & T. H. Nash |
| Identification made in | [no date] (3) |
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