This book’s purpose is to provide a quick visual reference for readers interested in psilocybin mushrooms of the United States. The book’s layout and format were organized to achieve that intent. Over 35 species of mushrooms are presented, along with images of each, their morphological characteristics, their range in the United States, and descriptions of their psychoactive properties. All regions of the U.S. are included, making this book useful for all amateur mycologists and mushroom foragers in the United States.