Tuber Melanosporum Vittadini It has round or even lumpy form caused by the stone grounds, that characterize Norcia. The peridio appears in black, a little bit purple color. The clod is pretty dark, brown or black with the light and highly branched veins. The ascies are of a round form and contain 4-6 spores densely aculeated, egg-shaped and of yellow –brown color. Their dimensions can be close to a big apple. Its gathering period takes part within all winter time, especially under the oaks, kernels and black carpini. The date of beginning and the end of gathering period is stabilized by the Regional Administration. It is permitted the cultivation of this truffle, considered as the most precious one among the black truffles, in the special areas for truffle...