Their unique contributions in writing this book include an understanding of the edible aspects of some poisonous plants and the bonus of their full color plant photography. This book should be used as a safeguard to any new plant you read about and want to try. If an edible plant has any poisonous parts, you should know what they are, where they are, and how to avoid being poisoned by them. Keep in mind that the importance of this book is as a toxicological guide, not a field guide to identifying poisonous plants (even though identification is just as important). This is an essential book for any serious wild food library.