Agaricus campestris
…5.5–8 μm by 4–5 μm. Cheilocystidia are absent. Several species may be confused with A. campestris. The most dangerous confusion may be with the deadly Amanita virosa (a 'destroying angel') or the deadly Amanita hygroscopica (pink-gilled destroying angel). Amanita species may be distinguished from Agaricus by a volva…