Agaricus bisporus
Agaritine is present as a natural phytochemical in fresh samples of at least 24 species of the genera "Agaricus", "Leucoagaricus", and "Macrolepiota". Mushrooms of these species are found around the world. These mushrooms grow in a wide range of habitats; indeed, one species alone, "Agaricus bisporus", is cultivated in over 70 countries and on every continent except Antarctica. "A. bisporus", also known as the common button mushroom, is of particular socio-economic importance in developed countries.