Parthenium hysterophorus L. species accepted

Parthenium alpinum (Nutt.) Torr. & A.Gray species accepted

Parthenium arctium Bartlett species accepted

Parthenium argentatum A.Gray species accepted

Parthenium auriculatum Britton species accepted

Parthenium bipinnatifidum (Ortega) Rollins species accepted

Parthenium cineraceum Rollins species accepted

Parthenium confertum A.Gray species accepted

Parthenium densipilum S.F.Blake species accepted

Parthenium fruticosum Less. species accepted

Parthenium glomeratum Rollins species accepted

Parthenium hispidum Raf. species accepted

Parthenium incanum Kunth species accepted

Parthenium integrifolium L. species accepted

Parthenium ligulatum (M.E.Jones) Barneby species accepted

Parthenium lloydii Bartlett species accepted

Parthenium lozanoanum Bartlett species accepted

Parthenium rollinsianum Rzed. species accepted

Parthenium schottii Greenm. ex Millsp. & Chase species accepted

Parthenium tetraneuris Barneby species accepted

Parthenium tomentosum DC. species accepted