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October 2000 Hampshire. Photograph copyright Leif Goodwin
Pestle shaped, densely covered with coarse spines, which fall away with age to reveal a smooth surface decorated with a network, initially white, then brown with age, insides ripening into a brown powdery spore mass which is released through a small apical opening in the thin outer skin, to about 5 cm across and 6 cm high
White when young
Late summer to autumn
In deciduous woods
Spores spherical, with small spines (4-6) µm
Echinatum means 'with spines'