| Name | Cirsium interpostum Petrak |
| Authorship | Petrak |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Cirsium Miller |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Cirsium interpostum Petrak |
| Identification made in | [no date] (1), 2016 (2) |