| Name | Cirsium congdonii R. J. Moore & Frankton |
| Authorship | R. J. Moore & Frankton |
| Rank | Species |
| Placed in | Cirsium Miller |
| Citation | 1967 Canad. J. Bot. 45(9): 1738–1740, f. 2 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Cirsium congdonii R. J. Moore & Frankton |
| Identification made in | [no date] (2) |