Let us dare to compare: a wild fosteriana plant coolect by Clenilson Souza and the most famous Bill Baker hybrid Dyckia Brittle Star.s

  

Above and below we see the fosteriana plant collect  by clenilson souza in Sengés-PR
It is just poted home.

 

Below you see Dyckia Brittle  Star

So, there is no doubt dyckia fosteriana is present in its genetics.