Agaricales is an order of Fungi. There are 23224 species of Agaricales, in 586 genera and 33 families. It includes groups like Mycenaceae, Hymenogastraceae, and Pterulaceae.
Definition: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)
