Dyckia argentea
This is famous and infameous Dyckia argentea.
It sees the described plant was in fact a Hetchia from Mexico
instead of a Dyckia from Brazil in one more taxonomic pearl.
So the plant doesn´t exists but Brazilian bushmen soon
got out from the bushes in Minas Gerais with this.
The pot is a Japanese one and a true jewel..at least cost as one.
This plant here lost most of its silver scales to heavy rain and even so it is
a true gorgeous Dyckia.