| Name | Xanthium inflexum Mackenzie & Bush |
| Authorship | Mackenzie & Bush |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Xanthium |
| Citation | 1905 Rep. (Annual) Missouri Bot. Gard. 16: 106 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Xanthium inflexum Mackenzie & Bush |
| Identification made in | [no date] (3) |