mushrooms (Agaricus bisporus)

See also

  • The common mushrooms (Agaricus bisporus) are native to the grasslands of Europe and North America. These are thought to be the wild parents of the cultivated varieties.
  • These are now cultivated with both white and brown variants. These are what you are most likely to buy in a supermarket.
  • What they are called depends on the colour, size and the maturity of the mushrooms.
  • They are immature if the gills are covered over and mature when the gills are uncovered.
  • For instance an immature white mushroom may be called a "button mushroom".
  • A brown variant may be called a "baby portabello" if it is small, or a "portabello" if it is larger, with new names like "portabella" creeping into the market.


  • Many mushrooms are poisonous some are deadly poisonous.The site is based on Roger Phillips seminal work 'Mushrooms and other fungi of Great Britain and Europe' and the similar book published on the mushrooms and Fungi of North America. Roger's twenty-year study will make the site the most complete collection of photographs and mushroom information from both sides of the Atlantic ever assembled.