distributed. Most species are saprobic and prefer grassland and woodland habitats. Genera Leucoagaricus and Leucocoprinus are known to be cultivated by fungus-growing ants in ant-fungus mutualism. Economic significance The genus Agaricus includes some species that are cultivated commercially throughout the world. The common "button mushroom", Agaricus bisporus, is the most widely cultivated edible mushroom. Agaricus blazei is a well-known medicinal mushroom used for a number of therapeutic and medicinal purposes. Several species are poisonous, such as some Lepiota, Agaricus sect. Xanthodermatei and Chlorophyllum species . See also List of Agaricales families List of Basidiomycota families References External links Agaricaceae in BoDD – Botanical Dermatology Database Agaricales families Extant Burdigalian first appearances