Agaricus bisporus, known as table mushroom, cultivated mushroom or button mushroom, is an edible
basidiomycete fungus which naturally occurs in grasslands, fields and meadows across
Europe and
North America, though has spread much more widely and is one of the most widely
cultivated mushrooms in the world. The original wild form bore a brownish cap and dark brown gills but more familiar is the current variant with a white form with white cap, stalk and flesh and brown gills.
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