1618-26. Cross section of horse dung fungus (Bohemian truffle, Pisolithus arhizus, Pisolithus tinctorius, dyeball mushroom) showing reddish-brown peridioles (spore sacs) developing in a black gelatinous matrix taken from a lawn in Al Shamal City Park, in Ruwais. Qatar, July 3, 2015Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |