Geastrum triplex Jung. Kragen-Erdstern, Géastre à trois couches, Collard Earthstar. Fruit body 3–5cm across when unopened and bulb-shaped, opening to 5–10cm across, outer wall splitting into 4–8 pointed rays and covered in a thick, pinkish-brown, fleshy layer which cracks as the rays bend back under the fruit body leaving the spore sac sitting in a saucer-like base. Spore sac sessile, pale grey-brown with a paler ring round the slightly raised mouth. Spores dark brown, globose, warted, 3.5–4.5um in diameter. Habitat amongst leaf litter in deciduous woods. Season late summer to autumn. Occasional, perhaps the most common member of the genus in Europe. Not edible. Distribution, America and Europe.