| Name | Polysiphonia violacea var. subulata (Ducluzeau) L. Batten |
| Authorship | (Ducluzeau) L. Batten |
| Rank | Variety |
| Placed in | Polysiphonia violacea (Roth) Sprengel |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Polysiphonia violacea var. subulata (Ducluzeau) L. Batten |
| Identification made in | [no date] (4) |
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