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The gem-studded puffball or devil's snuff-box (Lycoperdon perlatum) is a moderate sized puffball mushroom with a round fruiting body, tapering to a wide stalk. It is off-white with a top covered in short, spiny bumps or "jewels". When mature, they become brown and a hole in the top opens to release spores which are released in a burst when the body is compressed by rain drops, a touch, falling nuts, etc.