| Name | Caloplaca atrosanguinea (G. Merrill) I. M. Lamb |
| Authorship | (G. Merrill) I. M. Lamb |
| Rank | Species |
| Placed in | Caloplaca Th. Fries |
| Holdings | 18 Specimens held in the Harvard University Herbaria identified as Caloplaca atrosanguinea (G. Merrill) I. M. Lamb |
| Identification made in | [no date] (18) |
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