These Lepiota rhacoides - Shaggy Parasol mushrooms did grow in our garden after some rain in July and early August.
When the Lepiota species are growing, its scales on the cap are the result of its cap expansion causing the surface tissue to crack.
As Pieter always used to say if he got questioned about a certain species being edible or not:
'You can eat them ALL - some of them only once...'
Therefore we never take the risk as they often look alike and they can easily be mistaken for the wrong ones. Annually there are quite a number of death because of this.
Our advice is to buy them and only eat the commercially grown varieties.