| Name | Porphyra laciniata (Lightfoot) C. Agardh |
| Authorship | (Lightfoot) C. Agardh |
| Rank | Species |
| Placed in | Porphyra C. Agardh |
| Contains | Porphyra laciniata f. epiphytica Collins Porphyra laciniata f. linearis (Greville) Le Jolis |
| Holdings | 74 Specimens held in the Harvard University Herbaria identified as Porphyra laciniata (Lightfoot) C. Agardh |
| Identification made in | [no date] (73), 1907 (1) |