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.
Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.
↑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)
