Italian Mushrooms 2025: Porcini, Tartufo and the Foraging Culture

Why Italy has more edible wild mushroom species than any other European country — and what the ice age has to do with it

Italy's extraordinary mycological diversity (approximately 4,000 identified fungal species in Italy, compared to approximately 1,500 in the UK and 2,000 in France) has a specific biogeographic explanation rooted in the Pleistocene ice ages. During the maximum glacial extent (approximately 20,000 years ago), northern Europe was covered by ice sheets that eliminated virtually all forest fungal species north of the Alps; southern Italy, sheltered by the Apennine range and the Alpine barrier, retained a refuge population of temperate forest species that subsequently recolonized the north as the ice retreated. The Italian peninsula's north-south extent (from the Alpine climate of the Trentino to the subtropical climate of Sicily) also provides a thermal gradient that supports species from both northern European and Mediterranean ecological communities simultaneously. The specific cultural consequence: the Italian foraging tradition is older, deeper, and more species-specific than northern European equivalents because the species diversity has always been richer — Italian foragers learned to distinguish between species that northern European foragers had few opportunities to encounter.