Tulostoma fimbriatum - Photograph of this small species. Cystolepiota - Photographs of several members of this genus. Cystoderma - Photographs of several members of this genus. Macrolepiota procera - Photograph of this species, commonly known as the parasol mushroom. Coprinus sp. - Microscopic image. Coprinus - Microscopic image. Coprinus - Microscopic image. Agaricus placomyces - Photograph and description of this woodland fungus. Agaricus bitorquis - Photograph of the fruiting bodies of this species, commonly known as the Sidewalk Mushroom, pushing their way up through tarmac. Agaricus arvensis - Photographs and information on this species, commonly known as the Horse Mushroom, with guidance on distinguishing it from deadly Amanitas. English and Polish. Agaricus silvaticus - Photographs and information on this species, commonly known as the Wood Mushroom. English and Polish. California Fungi: Agaricus - The principal characteristics of the genus Agaricus and links to other sites. Also a list of those species found in California with photographs of about 20 of them. Of Mites, Nematodes and Fungi - Photographic article by M. Halit Umar on the theme that life is a continuous interaction between organisms, in this case the edible mushroom Agaricus bisporus and other organisms which depend on it and each other. Coprinus comatus - Article with photographs by Tom Volk on this species, sometimes called the Lawyer’s Wig. Leucocoprinus birnbaumii - Illustrated article by Tom Volk on this yellow fungus, also known as Lepiota lutea, often to be found growing in potting compost. Agaricus augustus - Article by Tom Volk on this robust and stately mushroom commonly known as the Prince. Coprinaceae - These fungi have rather soft, fragile fruiting bodies, and are characterized by black or dark brown spore powder. Some species liquify when the spores are mature. Information and photographs from Wikipedia. Coprinus - Provides a key to the subsections of the genus with images and characteristics of each species. Agaricus subrufescens - Photograph and notes on this mushroom often found growing on compost piles and mulch. Agaricus fuscofibrillosus - Photograph and notes on this red-staining mushroom. Agaricus pocillator - Photographs and notes on this species. Agaricus amicosus - Photograph and notes on this species. Agaricus bernardii - Photographs and notes on this species. Podaxis pistillaris - Photograph and information on this species from Wikipedia. Genetic Structure of Natural Populations of Agaricus bisporus - Account of research into the genetics of some populations.