| Xanthium albinum (Widd.) Scholz & Sukopp |
Accepted |
18 |
| Xanthium cavanillesii Schouw ex Didr. |
Accepted |
18 |
| Xanthium spinosum L. |
Accepted |
18 |
| Xanthium strumarium L. |
Accepted |
18 |
| Xanthium strumarium subsp. brasilicum (Vell.) O. Bolòs & Vigo |
Accepted |
18 |
| Xanthium strumarium Elliott |
Unresolved |
18 |
| Xanthium strumarium Lour. |
Unresolved |
18 |
| Xanthium cavanillesii |
Synonym of Xanthium cavanillesii Schouw ex Didr. |
18 |
| Xanthium canadense Mill. |
Synonym of Xanthium orientale L. |
18 |
| Xanthium riparium Itzigs. & Hertsch |
Synonym of Xanthium orientale L. |
18 |
| Xanthium californicum Greene |
Synonym of Xanthium orientale subsp. californicum (Greene) Greuter |
18 |
| Xanthium italicum Moretti |
Synonym of Xanthium orientale subsp. italicum (Moretti) Greuter |
18 |
| Xanthium strumarium subsp. italicum (Moretti) D. Löve |
Synonym of Xanthium orientale subsp. italicum (Moretti) Greuter |
18 |
| Xanthium echinatum Murray |
Synonym of Xanthium strumarium L. |
18 |
| Xanthium echinatum subsp. italicum (Moretti) O. Bolòs & J. Vigo |
Synonym of Xanthium strumarium L. |
18 |
| Xanthium inflexum Mack. & Bush |
Synonym of Xanthium strumarium L. |
18 |
| Xanthium mongolicum Kitag. |
Synonym of Xanthium strumarium L. |
18 |
| Xanthium pennsylvanicum Gand. |
Synonym of Xanthium strumarium L. |
18 |
| Xanthium ripicola J. Holub |
Synonym of Xanthium strumarium L. |
18 |
| Xanthium strumarium subsp. strumarium |
Synonym of Xanthium strumarium L. |
18 |
| Xanthium brasilicum Vell. |
Synonym of Xanthium strumarium subsp. brasilicum (Vell.) O. Bolòs & Vigo |
18 |
| Xanthium sibiricum Patrin ex Widder |
Synonym of Xanthium strumarium subsp. sibiricum (Patrin) Greuter |
18 |