- Mom, how can mushrooms grow straight out of branches, says son.
- Because they are endophytic and can grow inside the branches until the fruiting body comes out, says the botanical mom.
(Of course the red and white fly agaric never grows endophytically, only in the soil, but who cares? It is Christmas! And Swedes love to decorate with replicas of poisonous mushroom at Christmas time, :). )