| Name | Cirsium tracyi (Rydberg) Petrak |
| Authorship | (Rydberg) Petrak |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Cirsium Miller |
| GUID | urn:lsid:ipni.org:names:1087590-2 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Cirsium tracyi (Rydberg) Petrak |
| Identification made in | [no date] (2), 1960 (5), 1962 (1) |
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