| Name | Porphyra umbilicalis var. laciniata (Lightfoot) Ruprecht | 
| Authorship | (Lightfoot) Ruprecht | 
| Rank | Variety | 
| Placed in | Porphyra umbilicalis Kützing | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Porphyra umbilicalis var. laciniata (Lightfoot) Ruprecht | 
| Identification made in | [no date] (1) | 
