This very large, poisonous Amanita has white warts on the cap and erupts from a large basal bulb. The gallery below shows two Coker’s Amanita mushrooms before they erupted from the bulb, and then again a few days later. (The veil is evident on one of the mushrooms.) The warts on the cap will eventually turn brown.
The hefty mushrooms in these photos were 6 to 10 inches in height. They were photographed in the mountains of Southwest Virginia in late summer. Look for them coming up soon after rain in August and September.