A small, often flattened puffball of sandy, poor soils. Its white coat of short spines peels away in irregular sheets or chunks, exposing a smooth brown inner skin. This peeling is its most distinctive field mark.
Edibility disputed; not recommended. Some sources call it edible but insubstantial when young; others call it poisonous. A reported use in Mexico to produce auditory hallucinations has no known chemical basis. Slice every puffball top to bottom before eating: it must be pure white and uniform inside. A cap-and-gill outline means a young Amanita egg, possibly deadly (amatoxins); a firm, thick-skinned ball that is purple-black inside is a poisonous Scleroderma earthball.
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Habitat
Saprobic on the ground, alone, scattered or in groups, usually on sandy, nutrient-poor soil; in oak-pine woods, under hardwoods or conifers, and on roadsides and waste ground. Summer to early winter.
Distribution
Europe, North and South America, and Australia. Common and widespread in North America (for example Minnesota and Maryland records).
Characteristics
Fruitbody: 1-5 cm wide, nearly round when young, becoming flattened or pear-shaped on a short tapering, rooting base. Surface: white to pinkish, covered in short spines that often group into pyramid-like warts; the outer layer sloughs off in thick irregular sheets, leaving a smooth pale-to-dark brown inner skin. Opening: a small apical pore at maturity. Interior: white and firm, then greenish-brown and granular, finally greyish-brown and powdery. Spores: spherical, warty, 3.5-4.5 um (Wikipedia).