Discover the folklore and history of our most toxic plants."If you drink much from a bottle marked 'poison,' it is almost certain to disagree with you, sooner or later."—Lewis Carroll, Alice in WonderlandIn both history and fiction, some of the most dramatic, notorious deaths have been through poisonings. Concealed and deliberate, it's a crime that requires advance planning and that for many centuries could go virtually undetected. And yet there is...