| Name | Cirsium vernale (Osterhout) Cockerell |
| Authorship | (Osterhout) Cockerell |
| Rank | Species |
| Placed in | Cirsium Miller |
| Citation | 1912 Univ. Colorado Stud. 9(2–3): 78 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cirsium vernale (Osterhout) Cockerell |
| Identification made in | [no date] (1) |