prickly comfrey (Symphytum asperum Lepechin)
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↑Range - Expand
Legend | Color |
Introduced | |
Introduced 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.
↑Links & External Resources
• Symphytum asperum (prickly comfrey) | USDA PLANTS Database (About This Site)
• Symphytum asperum | Go Botany (About This Site)
• Rough Comfrey | iNaturalist (About This Site)
• Symphytum asperum (Prickly Comfrey) | Missouri Botanical Garden Plant Finder (About This Site)
• Symphytum asperum | CABI Invasive Species Compendium (About This Site)
• Symphytum asperum | Biota of North America Project (BONAP) (About This Site)
• Symphytum asperum | NatureServe Explorer (About This Site)