| Name | Lecanora crassa (Hudson) Acharius |
| Authorship | (Hudson) Acharius |
| Rank | Species |
| Placed in | Lecanora Acharius |
| Citation | 1810 Lichenogr. Universalis 413 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Lecanora crassa (Hudson) Acharius |
| Identification made in | [no date] (2) |
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