As my collection of wild edible plant identification guides grows, I have been able to likewise grow my knowledge of the resources available to the would-be forager.
This review has been a long time coming, but the Peterson Field Guide to Edible Wild Plants: Eastern/Central North America by Lee Allen Peterson (1977, 33rd printing) is by far the most comprehensive field identification guide I have examined, in keeping with the Peterson guide series made famous by Lee Allen's father, Roger Tory Peterson.
[Edit 6/1/10: Since writing this entry, I have acquired Steve Brill's Identifying & Harvesting Edible and Medicinal Plants, which is also quite comprehensive, and Samuel Thayer's The Forager's Harvest, in which he calls into question the edibility of at least two of the plants recommended by Peterson (certain water lily tubers, which Thayer says are actuallly poisonous.) As you can imagine, that put the fear of god in me--and so now, in an effort to make this review as honest as possible in light of new information, I will pass that concern along to you. As for me--I have the book and find it quite useful. However, knowing at the very least that there is some controversy, I will continue to cross-reference and use careful judgment about plants that are not widely corroborated in print and online references. Just so you know, Thayer asserts that a number of other wild edible plant books out there also have errors, likely caused by some instances of an author copying another author's accounts of a plant without testing it him or herself. So, do with that what you will. And now, on to the rest of the original entry and what I did and still do like about the Peterson guide...]

