| Name | Porphyra laciniata f. epiphytica Collins |
| Authorship | Collins |
| Rank | Forma |
| Placed in | Porphyra laciniata (Lightfoot) C. Agardh |
| Citation | 1903 Rhodora 5: 212 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Porphyra laciniata f. epiphytica Collins |
| Identification made in | [no date] (2) |
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