| Name | Xanthium calvum Millspaugh & Sherff |
| Authorship | Millspaugh & Sherff |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Xanthium |
| Citation | 1919 Publ. Field Columb. Mus., Bot. Ser. 4: 35 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Xanthium calvum Millspaugh & Sherff |
| Identification made in | [no date] (1) |
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