| Name | Physcia caesia (Hoffmann) Hampe ex Fürnrohr |
| Authorship | (Hoffmann) Hampe ex Fürnrohr |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Physcia (Schreber) Michaux |
| Citation | 1839 Naturhist. Topogr. Regensburg 2: 250 |
| Holdings | 70 Specimens held in the Harvard University Herbaria identified as Physcia caesia (Hoffmann) Hampe ex Fürnrohr |
| Identification made in | [no date] (67), 1956 (1), 2015 (1), 2019 (1) |
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