meadow mushroom (agaricus campestris) among green grass and dead organic matter : (pix sanjiv shukla)

agaricus campestris field mushroom meadow agaricaceae gilled basidiomycete fungi eaten cultivated fungus hemispherical shape flatten maturity gills pink red brown dark spore print wide white ring taste mild flesh reddish spores grassy areas rain moisture lawn suburban group solitary pasture edible commercially culinary flavor texture asia europe africa australia zealand north america