Water Knotweed (Persicaria amphibia (L.) Delarbre)
Also classified as Polygonum amphibium L..
Page contents
↑Range - Expand
| Legend | Color |
| Native | |
| Native or Not Present | |
| Native or Expanded |
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
• Polygonum amphibium (water knotweed) | USDA PLANTS Database (About This Site)
• Persicaria amphibia | Biota of North America Project (BONAP) (About This Site)
• Persicaria amphibia | Flora of North America (About This Site)
• Persicaria amphibia | Missouri Plants (About This Site)
• Water Knotweed | Maryland Biodiversity Project (About This Site)
• Persicaria amphibia (Swamp Smartweed) | Minnesota Wildflowers (About This Site)
• Persicaria amphibia (L.) Gray (Water Smartweed) | Digital Atlas of the Virginia Flora (About This Site)
