| Title | Lichenes Boreali-Americani, second edition of Decades of North American Lichens, prepared by Clara E. Cummings, Tho. A. Williams and A. B. Seymour |
| ReferenceWorkType | Exsiccata |
| Remarks | Taxon group: Lichens; Specimen count: 280; Location: 71; Cabinet: 71 |
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