| Classification | Asteraceae: Carduus |
| Classification 1 | Asteraceae: Cirsium |
| Harvard University Herbaria Barcode(s) | 00004611 |
| Type Status | Isotype |
| Collector | C. F. Baker, F. S. Earle & S. M. Tracy |
| Collector number | 90 |
| Country | United States of America |
| State | Colorado |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Colorado: Montezuma County |
| Locality | Mancos, dry fields, 7000 feet |
| Date Collected | 1898-06-24 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/d11a3b58-1de6-459c-b962-ba899ff133d1 |
| Harvard University Herbaria Barcode | 00004611 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Isotype |
| Isotype of | Carduus tracyi Rydberg |
| Verified by | P. Barlow-Irick |
| Taxon Reference | (for Carduus tracyi Rydberg) Bull. Torrey Bot. Club 1905. 32: 133. |
| Family | Asteraceae |
| Determination | Cirsium tracyi (Rydberg) Petrak |
| Determined by | G. B. Ownbey & Yu-Tseng Hsi |
| Determination Remarks | [current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
