Knowledge of plant toxicity has always been important, but the information has not always been reliable. Now, increasing international trade is drawing attention to the inadequacy of regional information and highlighting the geographical fragmentation and notorious discrepancies of thinly documented information. The international community of safety regulators, toxicologists, and poison control personnel requires a single reference compiled of verifiable, primary source reports of common poisonous plants.Intended for just that purpose, International Poisonous Plant Checklist: An Evidence-Based Reference successfully addresses the deficiencies and gaps in the current literature. Using accepted botanic names, the book defines the known set of toxic vascular plants. The use of botanic names satisfies the need for an international standard of identity to support worldwide communication and commerce. Also, taxonomy based on common ancestry and genetic connections provides a rational basis for studying and using plant relationships.