Pholiota adiposa is a species of fungus in the family Strophariaceae commonly known as the chestnut mushroom. It was originally described by German naturalist August Batsch in 1786 as a species of Agaricus. Paul Kummer transferred it to the genus Pholiota in 1871. It is found in Europe, where it grows both saprophytically and as a weak parasite on living and dead stems of European beech trees.

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Source: https://en.wikipedia.org/wiki/Pholiota_adiposa

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