Agaricostilbales is an order of Fungi. There are 66 species of Agaricostilbales, in 12 genera and 4 families. It includes groups like Kondoaceae, Chionosphaeraceae, and Ruineniaceae.
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)