In Québec, the order Botryosphaeriales brings together 4 species of mushrooms, in 2 families. The stars? Asteromyia Gall Midge Fungus, Corky bark disease and Aesculus leaf blotch, the most often observed. The richest region: Montréal, with 3 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.