| Name | Polysiphonia fruticulosa var. pilosissima Schiffner |
| Authorship | Schiffner |
| Rank | Variety |
| Placed in | Polysiphonia fruticulosa (Wulfen) Sprengel |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Polysiphonia fruticulosa var. pilosissima Schiffner |
| Identification made in | [no date] (2) |
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