This completely revised second edition provides all the information necessary to identify mushrooms in the field in the midcontinental region of Iowa, Illinois, Nebraska, Missouri, Minnesota, South Dakota, and Wisconsin: the tallgrass prairies and the western parts of the eastern deciduous forests.
The first edition has been improved in significant ways. The authors have updated scientific names, added photos where there were none and replaced poor photos with better ones, improved the keys, added some species and deleted others, added a section on truffles, and annotated the bibliography. There were originally 224 species; now there are 248.
The authors describe each species' cap, gills, stalk, annulus, and season when it is most likely to be seen as well as such characteristics as edibility and toxicity. In their detailed and lively introduction they discuss the economic and environmental aspects of fungi, basic mushroom biology, nomenclature, edibility and toxicity, and habitats and time of fruiting. Most important are the keys, which lead the dedicated reader to the major groups of fungi included in this guide.