Although known for its sandy beaches and pounding surf, historic Cape Cod is also home to a unique community of mushrooms that can be found in its heath, pine, and oak barrens and on the borders of its bogs, kettle ponds, and cedar swamps. Here is the definitive, comprehensive field guide to the highly varied mycoflora of Cape Cod and the National Seashore. It is written in easy-to-follow, nontechnical language and contains accurate and up-to-date descriptions along with 145 color illustrations that help the reader identify over 250 indigenous mushroom species. The scope of this work goes well beyond the identification of mushrooms. The authors provide information that increases the reader's awareness of the fragile nature of Cape Cod's various ecosystems and the critical role that mushrooms play in helping to preserve them.