Cornell University
Cornell University: Plants Poisonous to Livestock
A site dedicated to poisonous plants. Supplies names and information on each plant as well as frequently asked questions about poisonous plants.
Other
Botanical.com: Index of Poisionous Plants
This site from Botanical.com provides an index of poisonous plants with in-depth descriptions and symptoms.
Texas A&M University
Texas A&m Agrilife Extension: Common Poisonous Plants
An article on common poisonous plants and plant parts.
Curated OER
Science Kids: Science Images: Poisonous Plant
This photo shows a poisonous plant growing in the wild.