Agaricus cupreobrunneus

Also known as Brown Field Mushroom, Copper-brown Agaric, Wet Mushroom

Agaricus cupreobrunneus emerges in grassy openings, marked by a distinctly fibrillose, coppery-brown cap that separates it visually from pure white meadow cousins. The flesh remains unchanging or faintly pinkish when bruised, while crowded free gills shift from a delicate pale pink to deep chocolate brown as spores mature. Operating underground, perennial mycelial networks bind organic matter in pasture soil, producing brief flushes of fruiting bodies following substantial seasonal rains.