Panther Amanita (Amanita pantherina)
A. pantherina has a Cap that is 4-15 cm (2-6") in diameter, round, becoming convex to flat or slightly sunken. Its color ranges from dark to light brown, tan to dull yellowish. Often dark in the center, lightening towards to outside, and cap edges may be blackish, sooty, or yellowish-brown. Surface is tacky when wet. Its white universal veil which entirely covers the youngest mushrooms, will form white to pale buff spots or warts on mature mushrooms, and may eventually wash or wear off with age. These spots often form concentric circles, although they may also appear random. The flesh is firm and white.
Do not eat this mushroom.
Location is near the small town of Monroe, Oregon, USA.
Picture taken by Charles Harkins