Cap 50-100 mm broad, convex becoming plano-convex in age; dry, glabrous or minutely scaly on the margin, white; flesh white and unchanging when bruised; odor mild (not of almond nor of phenol). Gills free, close, broad, pink when young, becoming blackish brown in age. Stem 20-100 x 10-15 mm, cylindrical or narrowed downward, glarous above and slightly scaly below, white; with a white membraneous, flaring annulus above the middle of the stem. Sporedeposit dark brown. Edibility: edible and choice.
Most mushroom connoisseurs would agree that wild meadow mushrooms are much more flavorful than their commercially grown relatives sold in grocery stores. Look for A. campestris year round in pastures a few days after rainy periods. Agaricus campestris differs from other grassland Agaricus species in lacking yellow or red staining reactions and in lacking either an almond or phenolic odor and taste. Is: HA, MA.