Pure white amanita. Cup at the base, ring on the stem. Liver-killing. Looks like a button mushroom if you are careless.

All-white gilled mushroom. A skirt-like ring on the stem and a sack-like cup (volva) at the base — dig it up to see it. White spore print. Gills free of the stem.

Habitat

Woods and woods edges, summer–fall.

Season

June–October.

Size

3–8 in

Field marks

White gills; ring; underground cup

Amatoxins. Symptoms may wait 6–12 hours, then seem to improve, then liver failure. There is no home treatment.