This mushroom has a fleshy pale lemon yellow or whitish cap from 4 to 10 cm across, usually scattered with irregular veil fragments. The is also an all white form (variety alba). The gills and flesh are white. There is a large volva at the bulbous base of the 5 to 8 cm tall stem, which has a clear pendulous ring.  Smells of raw potatoes.

other Amanita

Photograph from top down, in side-view and underneath to show gills; ensure your photo shows full length of stipe including base; note size, habitat and substrate.

Mixed woodland

Autumn.

Widespread and fairly frequent in Britain.

Fairly frequent in Leicestershire and Rutland.

https://www.first-nature.com/fungi/amanita-citrina.php