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fruiting bodies of Agaricus bisporus (click on image to enlarge it)
Source: Wikimedia Commons

Agaricales - (gilled mushrooms and toadstools)

This order of basidiomycetes contains the familar mushrooms with many edible species like the button mushrooms. On the underside of the umbrella-like fruiting body they have gills, lamellae-like structures which produce basidiospores. The spores disperse through the wind. The fungi live as hyphae and might form networks in the soil, extending over many square metres. The fruiting bodies are produced after + and - hyphae merge, a form of sexual reproduction.

Most species are saprobic, living in substrates rich in organic matter. However, various species are parasitic and the group contains important plant pathogens like those of the genus Armillaria.

For details see the respective page in Wikipedia.

The following genera and individual species are currently entered under this order: