About the Author
George E. Burrows, DVM, PhD, is emeritus professor of toxicology and former adjunct toxicologist in the Animal Diagnostic Laboratory of the Oklahoma State University College of Veterinary Medicine, Stillwater. The author of numerous journal articles on the identification of plant toxicants and their mechanisms of action, he has also served as an associate editor for Veterinary & Human Toxicology, coordinating a feature page, "Poisonous Plant Cases."
Ronald J. Tyrl, PhD, is emeritus professor of botany and former curator of the herbarium at Oklahoma State University, Stillwater. He is the coordinating editor of the Flora of Oklahoma Project and has authored numerous technical articles and books on the identification and classification of flowering plants.