The tasty vesse de loup géante or giant puffball (Calvatia gigantea) grows in meadows and woodlands from June to November. The big ones always spectacular. If you find one, slice it up and fry it in butter. It will taste a bit like French toast.
Also known as the tête de mort or lycoperdon géant.
Lycoperdon pyriforme or vesse de loup en poire is the common puffball that grows on decaying wood in late summer and autumn, and is edible, but not that tasty and not a fungus many people seek out.
Images by Henk Monster, Maerian