| Name | Porphyra atropurpurea (Olivi) De Toni |
| Authorship | (Olivi) De Toni |
| Rank | Species |
| Placed in | Porphyra C. Agardh |
| Citation | 1897 Syll. Alg. 17 |
| Holdings | 43 Specimens held in the Harvard University Herbaria identified as Porphyra atropurpurea (Olivi) De Toni |
| Identification made in | [no date] (43) |
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