| Name | Cirsium coloradense (Rydberg) Cockerell ex Daniels |
| Authorship | (Rydberg) Cockerell ex Daniels |
| Rank | Species |
| Placed in | Cirsium Miller |
| Citation | 1911 Univ. Missouri Stud., Sci. Ser. Series 2(2): 254 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Cirsium coloradense (Rydberg) Cockerell ex Daniels |
| Identification made in | [no date] (3), 1962 (5), 1993 (2) |
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