Dyckia! and one of the  most difficult to be kept under cultivation here in the South.

It is , in my opinion the most demanding plant.

In nature it is found on one  rocky small slope in the far west in Brazil.

Just less than one kilometer a away from the Bolivian frontier.

It simply hates humidity and cold altogether.

It is a challenge to any one who loves the xerics.

Unnamed Dyckia species!