One of the best-known parasitic mushrooms This exclusive fungi actually grows on the backs of caterpillars and other bugs, and replaces the hosts tissue with that of the mushroom. Other examples include the Chaga and the Lion's Mane mushrooms, both of which grow on tree bark.
Parasitic fungi do eventually kill their host.
4. Endophytic Mushroom
Endophytes are even more complex, as they take over the hosts tissue but dont harm the host.