| Name | Hypogymnia occidentalis L. H. Pike |
| Authorship | L. H. Pike |
| Rank | Species |
| Placed in | Hypogymnia (Nylander) Nylander |
| Citation | 1982 Mycotaxon 16(1): 158 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Hypogymnia occidentalis L. H. Pike |
| Identification made in | [no date] (6) |
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