These fungi are related to the cup fungi, in the class Ascomycetes. Their spores are produced inside a special cell called the ascus, instead of on the outside of basidia. The spores of morels and false morels are explosively discharged into the air as a fine white cloud. Mushrooms and other fungi grow almost everywhere, on every natural material imaginable. Where you look depends on the mushroom you are trying to find.
Some fungi grow only in association with certain trees.
Others grow on large logs. Mushrooms are also found in soil, on decomposing leaves, and in dung, mulch and compost. Knowing when to look is also important. Mushrooms are not formed until temperature and moisture conditions are right for them. Some mushrooms are produced during only one season of the year.