| Name | Polysiphonia fruticulosa var. wulfenii Bornet | 
| Authorship | Bornet | 
| Rank | Variety | 
| Placed in | Polysiphonia fruticulosa (Wulfen) Sprengel | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Polysiphonia fruticulosa var. wulfenii Bornet | 
| Identification made in | [no date] (1) |