Peziza fimeti

Peziza fimeti is a species of ascomycete fungus belonging to the family Pezizaceae. Found in Europe and North America, the fungus grows on cow dung. It produces small, light brown, cup-shaped fruit bodies up to 2 cm (0.8 in) in diameter. The asci (spore-producing cells) are cylindrical (or nearly so), with dimensions of up to 280 µm long and 18 µm in diameter. The spores are ellipsoid and measure 8 by 16 µm.