| Parthenium argentatum A. Gray | | a | | Parthenium argentatum A. Gray | | 26802 | |
| Parthenium tomentosum DC. | | a | | Parthenium tomentosum DC. | | 26803 | |
| Parthenium hybr. | | a | | Parthenium hybr. | | 300425 | |
| Parthenium bipinnatifidum (Ortega) Rollins | | a | | Parthenium bipinnatifidum (Ortega) Rollins | | 315268 | |
| Parthenium incanum Kunth | | a | | Parthenium incanum Kunth | | 315270 | |
| Parthenium tomentosum DC. var. tomentosum | | a | i | Parthenium tomentosum DC. var.tomentosum | | 315271 | |
| Parthenium tomentosum DC. var. stramonium (Greene) Rollins | | a | i | Parthenium tomentosum DC. var.stramonium (Greene) Rollins | | 315272 | |
| Parthenium stramonium Greene | Parthenium tomentosum DC. var. stramonium (Greene) Rollins | | | Parthenium stramonium Greene | Parthenium tomentosum DC. var.stramonium (Greene) Rollins | 315273 | 315272 |
| Parthenium confertum A. Gray | | a | | Parthenium confertum A. Gray | | 315274 | |
| Parthenium fruticosum Less. | | a | | Parthenium fruticosum Less. | | 315275 | |
| Parthenium schottii Greenm. ex Millsp. & Chase | | a | | Parthenium schottii Greenm. ex Millsp. & Chase | | 315276 | |
| Parthenium hysterophorus L. | | a | | Parthenium hysterophorus L. | | 315278 | |
| Parthenium alpinum (Nutt.) Torr. & A. Gray | | a | | Parthenium alpinum (Nutt.) Torr. & A. Gray | | 400653 | |
| Parthenium integrifolium L. | | a | | Parthenium integrifolium L. | | 402660 | |
| Parthenium radfordii Mears | | a | | Parthenium radfordii Mears | | 415669 | |
| Parthenium spp. | | a | | Parthenium spp. | | 449066 | |
| Parthenium hispidum Raf. | | a | | Parthenium hispidum Raf. | | 449068 | |
| Parthenium integrifolium L. var. hispidum (Raf.) Mears | Parthenium hispidum Raf. | | i | Parthenium integrifolium L. var.hispidum (Raf.) Mears | Parthenium hispidum Raf. | 449069 | 449068 |