Sneezeweed (Helenium amarum (Raf.) H. Rock)
↑Range - Expand
Legend | Color |
Native | |
Introduced | |
Expanded | |
Introduced or Not Present | |
Native or Expanded | |
Expanded or Not Present |
This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.
This plant is occasionally planted in gardens, and can escape, but it also is weedy and spreads readily on its own. Its preference for disturbed habitats has allowed it to expand through roadsides, along railroads, and in pastureland. We mark the new portions of its range expanded because they are largely contiguous with its native range, except in California where there is a distant, isolated population which we mark introduced.
↑Links & External Resources
• Helenium amarum (Bitterweed) | Illinois Wildflowers (About This Site)
• Helenium amarum (sneezeweed) | USDA PLANTS Database (About This Site)
• Helenium amarum | Go Botany (About This Site)
• Helenium amarum (Sneezeweed) | Missouri Botanical Garden Plant Finder (About This Site)
• Helenium amarum (bitterweed) | CABI Invasive Species Compendium (About This Site)
• Helenium amarum | Biota of North America Project (BONAP) (About This Site)
• Helenium amarum | NatureServe Explorer (About This Site)
• Helenium amarum | Flora of North America (About This Site)
• Helenium amarum | Missouri Plants (About This Site)
• Narrow-leaved Sneezeweed | Maryland Biodiversity Project (About This Site)
• Helenium amarum (Raf.) H. Rock var. amarum (Bitterweed) | Digital Atlas of the Virginia Flora (About This Site)