Fungus (see below), which are produced by very closely related "Aspergilli". Quorn, a meat substitute, is made from "Fusarium venenatum". Edible mushrooms include commercially raised and wild-harvested fungi. "Agaricus bisporus", sold as button mushrooms when small or Portobello mushrooms when larger, is the most widely cultivated species in the West, used in salads, soups, and many other dishes. Many Asian fungi are commercially grown and have increased in popularity in the West. They are often available fresh in grocery stores and markets, including straw mushrooms ("Volvariella volvacea"), oyster mushrooms ("Pleurotus ostreatus"), shiitakes ("Lentinula edodes"), and enokitake ("Flammulina" spp.). Many other mushroom
Diatonic button accordion like a harmonica. Other single-action or bisonoric members of the free-reed family include the German concertina, the Anglo-German (or "Anglo") concertina, the bandoneon, and the Chemnitzer concertina (see concertina). There are varieties of diatonic button accordion that are double-action, such as the garmon. Because each button produces two notes, the diatonic scale can be covered in four buttons on a melody row. For example, on a melody row pitched in C, the notes of the lower full octave of the instrument's range are assigned to four buttons as follows: "Note: the first button in the example above, numbered 1, is