Western Poison Ivy (Toxicodendron rydbergii (Small ex Rydb.) Greene)
Also known as Rydberg’s poison ivy.
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↑Summary
A rhizomatous shrub native to the interior West and North of North America that can cause a dangerous allergic reaction upon contact with its sap.
↑Range - Expand
| Legend | Color |
| Native | |
| Native 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.
Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.
↑Similar Plants
↑Links & External Resources
• Toxicodendron rydbergii (western poison ivy) | USDA PLANTS Database (About This Site)
• Toxicodendron rydbergii | Go Botany (About This Site)
• Western Poison Ivy | iNaturalist (About This Site)
• Toxicodendron rydbergii | Biota of North America Project (BONAP) (About This Site)
• Toxicodendron rydbergii | NatureServe Explorer (About This Site)
• Toxicodendron rydbergii (Western Poison Ivy) | Minnesota Wildflowers (About This Site)
• Toxicodendron rydbergii (Small ex Rydberg) Greene (Western Poison Ivy) | Digital Atlas of the Virginia Flora (About This Site)
↑Photo gallery
