| Parthenium | small genus of North American herbs and shrubs with terminal panicles of small ray flowers |
|---|---|
| Parthenium | much-branched subshrub with silvery leaves and small white flowers of Texas and northern Mexico |
| Parthenium | tropical American annual weed with small radiate heads of white flowers |
| Parthenium | stout perennial herb of the eastern United States with whitish flowers |