Agaricus bisporus—known variously as the common mushroom, button mushroom, white mushroom, table mushroom, portobello mushroom, crimini mushroom, Swiss Brown mushrooms, also known as Cremini, Italian Brown, Italian mushroom, Roman Brown mushrooms, or cultivated mushroom —is an edible basidiomycete mushroom native to grasslands in Europe and North America. A. bisporus's cultivated in more than 70 countries. Among English speakers, Agaricus bisporus's known by many names. A young spec… (More on Crimini)