| Name | Cirsium undulatum (Nuttall) Sprengel |
| Authorship | (Nuttall) Sprengel |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Cirsium Miller |
| Contains | Cirsium undulatum var. ciliolatum L. F. Henderson Cirsium undulatum var. megacephalum (A. Gray) Fernald |
| Holdings | 135 Specimens held in the Harvard University Herbaria identified as Cirsium undulatum (Nuttall) Sprengel |
| Identification made in | [no date] (79), 1960 (50), 1961 (3), 1988 (2), 2000 (1) |
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