Identification
White silky cap on wood; volva at the base; gills free, turning pink — the volvariella signature.
Edibility
Edible — but the volva demands respect: amanitas carry the same organ.
In practice
- Volva + pink gills + on wood = volvariella.
- Volva + white gills + on soil = suspect an amanita — see the death cap.