Agaricus augustus is a wild mushroom. Large individuals reach 25 cm cap diameter and 10-15 cm stipe height for 2-3 cm width. It is not as white as the cultivated Agaricus bisporus because the cap and the stipe surfaces display circles of brownish scales. These scales also hang on the cap margin. Below the cap, the grills are fine and dense, salmon like colour. One double, large and white veil wraps the stipe. This stipe thickens at its bottom. The mushroom body is white, though it turns to yellow in eroded areas and cuts.
Agaricus augustus is found in the rich soils of forests, particularly in green oak woods, either in spring or in autumn.
Agaricus augustus is an edible mushroom.
[photo Jordi Badia]