| Name | Polysiphonia harveyi var. arietina Harvey |
| Authorship | Harvey |
| Rank | Variety |
| Placed in | Polysiphonia harveyi Bailey |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Polysiphonia harveyi var. arietina Harvey |
| Identification made in | [no date] (1) |