Amanita phalloides

 Photos Taken in UK. http://www.bioimages.org.uk/HTML/T2111.HTM

http://members.aol.com/basidium/deathcap.html

Description:

Common Name: Death Cap Cap: Tan to brownish to greenish, 2-5 inches. Flesh:   Gills:   Spore Print:   Stalk:  Fruiting:   Range:   Edibility: Deadly  Look-alikes: Note: