Agaricus cupreobrunneus

Agaricus cupreobrunneus, commonly known as the brown field mushroom, is an edible mushroom of the genus "Agaricus".
Distribution and habitat.
"Agaricus cupreobrunneus" tends to fruit in disturbed areas and grassy places, such as lawns, pastures, and roadsides. It can fruit by itself, gregariously, or in fairy rings.
Edibility.
"Agaricus cupreobrunneus" is edible and good. Its taste is comparable to that of "Agaricus campestris", but it is comparatively lacking in texture. "Agaricus cupreobrunneus" is not currently cultivated on a widespread basis, but is commonly eaten by collectors in the areas in which it grows.
It does not contain the carcinogen agaritine which appears in many other members of the genus Agaricus.
Similar species.
"Agaricus. cupreobrunneus" is similar in general appearance to a number of other "Agaricus" species, especially to "A. campestris". It also bears strong similarities to "A. porphyrocephalus", "A. rutilescens", and "A. argenteus". The only potential lookalikes of "A. cupreobrunneus" that are poisonous are yellow- or red-staining, or occur in much different habitats.