Learning(in(the(Leaves( Iden/ficaon3(...

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Learning  in  the  Leaves  Iden/fica/on-­‐  Agaricus  bisporus  Imbach  -­‐  Cul/vated  (Bu=on)  Mushroom  

Dis$nguishing  Features  •  Ini$ally  hemispherical,  becoming  convex  and  eventually  fla:ening.  At  maturity,  

the  cap  diameter  is  usually  between  5  and  10cm. •  The  crowded  gills  are  narrow  and  free;  ini$ally  pink  they  turn  reddish  and  then  

chocolate  brown  as  the  fruitbody  matures. •  The  stem  is  3  to  6cm  tall  and  1.5  to  2cm  wide.  Below  the  insubstan$al  

membranous  double  ring,  the  surface  of  the  stem  is  flaky.

Interes$ng  Facts  •  It  surely  goes  without  saying  that  this  is  a  good  edible  mushroom  and  one  of  the  $ny  minority  of  edible  fungi  that  

are  considered  safe  to  eat  raw.  The  very  pale-­‐capped  mushrooms  sold  in  most  supermarkets  are  a  derived  form  of  Agaricus  bisporus,  which  in  the  wild  has  a  brown  cap  as  shown  in  the  main  picture,  above.  When  fully  expanded,  the  caps  are  some$mes  referred  to  as  Portobello  Mushrooms  (some$mes  spelt  Portobella).

•  [informa$on  collated  from  the  First  Nature  Website:  www.first-­‐nature.com  ]