| Name | Thesium squarrosum Linnaeus f. | 
| Authorship | Linnaeus f. | 
| Rank | Species | 
| Placed in | Thesium | 
| Citation | 1782 Suppl. Pl. 162 | 
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Thesium squarrosum Linnaeus f. | 
| Identification made in | [no date] (5) | 
