Most deteriorate very rapidly after being picked. To clean, split cap lengthwise to check for spoilage or insect infestation. Set aside some uncooked specimens of whatever is eaten and keep refrigerated. If a poisoning does occur, the mushroom can be quickly identified. You may have symptoms such as loss of muscular control, hallucinations, diarrhea or coma.
Some mushrooms are absolutely deadly.
It is absolutely essential before you collect mushrooms that you be positively certain of the kind you are after. Mushrooms are plentiful in Michigan and when safety is practiced, mushroom collecting can be a fun and rewarding hobby.