Aimed at anyone who wants to improve their knowledge and understanding of fungi on trees, this book is an in-depth guide to 100 species of perennial and annual fungi, illustrated with more than 900 colour photographs. Each species biography includes a description of the fruit body, details of where it is usually found, its potential effects and impact, and a list of similar species. Introductory chapters examine mycorrhizal fungi and their mutualism with trees, wood decay and tools for understanding it, unusual forms and abnormal states of fungal fruit bodies, techniques for photographing fungi, and microscopy.