Mycologists have developed several systems of classifying fungi.
A less official classification groups mushrooms according to:
- form of thallus - large-fruiting fungi and microscopic fungi
- culinary importance - edible, inedible, poisonous mushrooms
- place of occurrence - above-ground, arboreal, underground, lichen, aquatic mushrooms
- nutrition and importance - saprophytic, parasitic, symbiotic, predatory, pathogenic
