| Name | Cirsium kelseyi (Rydberg) Petrak |
| Authorship | (Rydberg) Petrak |
| Rank | Species |
| Placed in | Cirsium Miller |
| Citation | 1917 Beih. Bot. Centralbl., Abt. 2. 35(2[2/3]): 548 |
| Holdings | 18 Specimens held in the Harvard University Herbaria identified as Cirsium kelseyi (Rydberg) Petrak |
| Identification made in | [no date] (16), 1963 (2) |
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