Amanita Stirps Sororcula

Brown, bell-shaped cap, which will become flat with age. The cap has white, scattered patches of volva. White stem, flesh, and gills.

The taxonomy for this mushroom is complicated and mostly unknown. It may be a new species or it could also be either A. rhacopus and A. texasorora. Right now, it's classified as Amanita stirps Sororcula, which means means it's part of the Sorocula group that is limited to eastern North America and not including taxa where the caps are predominantly gray.