Such a system is called secondary homothallism. This ensures that every spore that lands on a suitable substrate is capable of forming mushrooms. However the consequence of this mating system is that it is very difficult and tedious to do breeding work with Agaricus . There is a movement underway to conserve the name Agaricus bisporus , so we will refer to it by that species name here. The three mushrooms you see to the right are all actually the same species.
Many people love to eat mushrooms in omelets, in stir-fry, on salads, and in soups.
Marinated and grilled portabella is a treat not to be missed. The methods for growing Agaricus are vastly different from growing most other sorts of mushrooms. Agaricus is a secondary decomposer, which means that bacteria and other fungi have to break down raw materials before Agaricus can grow. This is the process known as composting. Other kinds of cultivated mushrooms such as oyster mushrooms , enoki and shiitake are primary decomposers of wood, and composting is not necessary.