This field guide is the first of its kind as a lichen identification guide for urban areas throughout northeastern North America. Divided into three sections?lichen basics; species descriptions; and an illustrated glossary and index?the book aims to connect city dwellers and visitors with the natural world around them.

Jessica L. Allen is an assistant professor of integrative plant biology at Eastern Washington University. James C. Lendemer is an associate curator at the New York Botanical Garden and assistant professor at the City University of New York.