All over the world there are dozens of species of truffles but most are not intended for consumption because toxic or not palatable.
In Italy you can consume only 9 species:
-Tuber Melanosporum, Vitt. It is the Black Truffle: This species gives off a very pleasant aromatic scent and is widely distributed in the Umbrian territories.
-Tuber Magnatum Pico is the Precious White Truffle: truffle most valuable for the intense and delicate aroma that emanates.
-Tuber Aestivum, Vitt. and Tuber Uncinatum, Chatin, are truffles Scorzone summer and winter: have many affinities and similarities in form but have different periods of maturation.
-Tuber Albidum, Pico and Tuber Borchii, Vitt. Whitebait is called or even Marzuolo.
-Tuber Brumale, Vitt. and Tuber Brumale, Vitt. var. Moschatum, De ferry are called respectively Brumale truffles and truffle Moscato.
-Tuber Macrosporum, Vitt. the black truffle is smooth.
-Tuber Mesentericum Vitt. is the ordinary black or black truffle from Bagnoli.