| Name | Porphyra laciniata f. linearis (Greville) Le Jolis |
| Authorship | (Greville) Le Jolis |
| Rank | Forma |
| Placed in | Porphyra laciniata (Lightfoot) C. Agardh |
| Citation | 1863 Mém. Soc. Imp. Sci. Nat. Cherbourg 99 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Porphyra laciniata f. linearis (Greville) Le Jolis |
| Identification made in | [no date] (1), 1907 (1) |