Agaricus campestris, L. Common mushroom . This mushroom, common in the United States and in Europe, is esculent ; stem only two to three inches high. Authority. Poisoning symptoms. Slight delirium. Eyes sunken, with livid circle. Face humid, hippocratic. Tongue red and parched. Nausea. Vomiting and purging of liquid matter. Abdomen retracted. Great abdominal pain at intervals. Severe colic. Purging and vomiting of liquid matter. Pulse hard, weak, rapid, irregular. Pulse feeble. Respiration irregular. Depraved habit, leading to external suppuration and gangrene. Severe cramps. Greenness of the skin. Formation of abscesses, which discharge a thin, ill-conditioned pus, and pass rapidly into suppuration and gangrene. Skin cold, covered with cold sweat. Kind of tertian fever. Somnolency.