This book is about many common and some less common hyphomycete fungi with dark conidia or conidiophores. It aims to make their identification easier and in particular enable students and amateur mycologists, as well as professionals, who do not have direct access to a large herbarium, to name a number of their own collections and isolates to species level. This group of fungi is important as it includes many pathogens of plants and animals, many species which cause spoilage of food and deterioration of paper, plastics, textiles etc, and others which are used in various industrial processes.