Lycoperdon echinatum Pers. ex Pers. Igelstäubling Lycoperdon épineux, Spiny Puffball. Fruit body 2–5cm across, subglobose tapering into a short stem, white becoming brown, outer layer forming pointed spines 3–5mm long, convergent at the tips in groups of 3 or 4, leaving a net-like pattern when the spines have become detached, opening by a central pore. Gleba purple-brown at maturity; sterile base occupying stem often small. Spores brown, globose, warted, 4–6um in diameter. Habitat in deciduous woods and on heaths. Season summer to late autumn. Uncommon. Not a good edible. Distribution, America and Europe.